Bus duct connector capable of quickly recovering power supply and electric connection method thereof

Abstract

The invention discloses a bus duct connector capable of quickly recovering power supply and an electric connection method thereof, a metal connecting sheet is placed between insulating partition plates, two connector end plates clamp the overlapped insulating partition plates and are connected together through bolts, the width direction of the metal connecting sheet is 12-150mm higher than the width of the insulating partition plates, and the metal connecting sheet is connected with the insulating partition plates through bolts. At least one wiring hole is formed in the part exceeding the width of the insulating partition plate, and the aperture of the wiring hole is 8.4-21 mm. The electric connection method comprises the following steps of: 1, hanging a plug box without a plug connector, and connecting a wire outlet end of an internal circuit breaker with a floor main switch by using a cable; 2, prefabricating a metal connecting sheet, wherein the metal connecting sheet is made of a current-conducting plate; 3, installing the improved bus duct connectors: respectively inserting one sides of the two improved bus duct connectors into the intact end heads of the upper and lower bus duct main bodies, and fastening the two improved bus duct connectors by using bolts; and 4, circuit connection: connecting the wiring holes of the metal connecting sheets on the upper and lower bus duct connectors and the wire inlet end of the circuit breaker in the jack box by using a cable.

Description

Technical Field

[0001] The invention relates to a connector for a power supply line and an electrical connection method thereof, belonging to the technical field of power equipment and devices and their installation, and in particular to a bus duct connector for rapid power recovery and an electrical connection method thereof. Background Art

[0002] The bus duct connector is an electrical component used to connect the conductive busbars in the bus duct system. It is usually composed of two connector end plates on the outside, 5 to 6 insulating partitions holding the conductive connecting piece in the middle, and fastening bolts. The function of the insulating partition is to ensure electrical isolation and prevent short circuits, while also bearing a certain mechanical strength and high temperature resistance. The structural feature is that the conductor (busbar) of the bus duct is inserted into the insulating partition corresponding to the connector to achieve electrical isolation between phases, and the conductive connecting piece in the connector is used to achieve electrical connection between each conductive busbar, so that the current can be smoothly transmitted from one section of the bus duct to another section of the bus duct. At the same time, the grounding connection piece or the bus duct shell is used for grounding to ensure the grounding safety of the system, thereby ensuring the continuity and integrity of the bus duct system. In order to conduct electrical energy, existing high-rise buildings are designed with electrical shafts. There are reserved holes between the floors in the electrical shaft for the bus ducts or cables connected from bottom to top to pass through. The bus duct is a bus system composed of a fixed bracket, a protective shell, a busbar, a connector, a plug-in, a plug-in box, a jack insulating sleeve, a shunt circuit breaker and related accessories. The bus duct shell is a long metal shell with a rectangular cross-section and closed on all sides. There are lead-out holes on the bus duct cover plate, and the lead-out holes are equipped with jack insulation sleeves. Bus bars made of copper or aluminum are installed inside to form the main body of the bus duct. The installation of the main body of the bus duct is to drive expansion bolts on the wall of the electrical shaft of each floor and the cast-in-place slab according to the position required for power wiring, connect the fixed bracket, connect the bus duct shell with bolts on the fixed bracket, install the conductive bus in the bus duct shell according to the three-phase four-wire system or three-phase five-wire system to form a busbar, and fasten it with locking bolts through the reserved screw holes on the side of the bus duct shell. The bus duct is usually customized according to the total height of the unit of the high-rise building. The bus duct is heavy and long. In order to facilitate installation, it must be divided into sections. Each section of the bus duct body is generally about 3 meters long, referring to the floor height. When laying the bus duct, the two sections of the bus duct body need to be connected together. Usually, the busbars on the two sections of the bus duct body are inserted from both sides of the bus duct connector, and then the bus duct connector is connected to the bus duct bodies on both sides by installing bolts. The two conductive connecting pieces separated by the insulating partition inside the bus duct connector clamp each busbar and fit tightly, thereby completing the connection between the two sections of the bus duct body to form a unit power supply line. The existing bus duct connector is a device that connects each section of the bus duct body to each other and conducts power. It is only used for the connection between two groups of bus duct bodies to ensure continuous power supply and has no other functions. In order to facilitate the penetration of locking bolts, the existing insulating partitions are molded with epoxy resin, polycarbonate or more advanced DMC (bulk molding compound), and the inner side surface is molded with a surrounding edge slightly larger than the length and width of the conductive connecting piece in the length and width directions. The height of the surrounding edge is the same as the thickness of the conductive connecting piece, so that the conductive connecting piece can fit in the insulating partition without shaking. At the same time, the bolt mounting hole of the insulating partition also has a surrounding edge, and the bolt mounting hole of the conductive connecting piece is slightly larger, which is stuck on the surrounding edge of the bolt mounting hole of the insulating partition for positioning.In this way, the mounting holes of the insulating partition bolts and the mounting holes of the conductive connecting piece bolts can be kept in a straight line, which is convenient for inserting and locking the bolts. Plug-in: Also called a piercing wire clamp or a plug pin, it is similar to a copper clip with plastic shell insulation protection on the outside, fixed on the plug-in box, the head of the copper clip passes through the lead-out hole and is clamped on the busbar in the main body of the bus duct, and the copper sheet at the tail end is connected to the cable, which is then connected to the incoming line end of the circuit breaker, and the electrical equipment is connected to the outgoing line end of the circuit breaker, forming the power supply line for each floor. Plug-in box: It is one of the accessories of the bus duct, fixed on the outer shell of the bus duct, with a lead-out hole on the back, which is connected to the lead-out hole on the bus duct cover plate, mainly to extend and expand the branch line of the bus duct, and is equipped with a plastic shell circuit breaker of the corresponding current size inside, which can connect the current of the bus trunk line to the incoming line end of the floor main switch through the circuit breaker, and then connect the outgoing line end of the main switch to the household meter box, and divert it to the electrical equipment of each household. The busbars passing through the bus duct on each floor lead out branch lines to supply power to each unit floor. At present, bus duct is suitable for AC power with a rated voltage of less than 660V and a frequency of 50Hz, and a three-phase four-wire or three-phase five-wire power supply and distribution system with a rated current of 400A~1600A. Similar bus duct products have been widely used in indoor low-voltage power transmission trunk engineering projects, which can efficiently transmit and distribute electric energy. Bus ducts can be divided into three types according to the insulation method: air plug-in bus duct, intensive insulation plug-in bus duct and high-strength plug-in bus duct. The common feature of them is that they use copper clips to connect the branch lines from the busbar vertically. After being powered on, they are in contact for a long time, and the contact parts are prone to heat, arc erosion and oxidation. The plug-in parts have poor contact and poor conductivity, and even the contact at the connection point fails, causing damage to the user's household appliances. Therefore, the copper clip-shaped connectors used in the branch lines have a low service life and damage the busbar (the busbar needs to be repaired and reused), and the disassembly and replacement work is labor-intensive and time-consuming, which affects the rapid recovery and operation of power supply. In addition, the long-term use of bus ducts, especially in old communities, will cause the bus duct to rise in temperature, and dust, moisture or water leakage will accumulate inside, causing the interphase insulation resistance to decrease, the insulation tape to be damaged and electrically broken, the copper busbar to be heated and deformed when powered on, or small animals such as mice running around, which will also cause the bus duct to short-circuit and cause major power outages. Since the bus duct is customized and needs to be rushed by the manufacturer, the problem cannot be solved in a short time, the replacement time is longer, and the power supply cannot be quickly restored, which leads to great public resentment and many complaints. Bus duct products are produced by their respective manufacturers, transported to the construction site in sections and installed and connected with bolts. Their models and specifications are not uniform, and some products are quite different. Once a bus duct fails, on-site repairs are more difficult and it takes a long time to restore power. How to improve the existing power supply method, quickly handle the fault and quickly restore power supply after a bus duct or connector fails, reduce complaints, and improve the reliability of power supply for residents has become one of the key issues that power supply companies need to solve for high-rise building power supply systems. Summary of the invention

[0003] In view of the above-mentioned technical problems, the purpose of the present invention is to provide a bus duct connector for rapid power restoration and an electrical connection method thereof, which can quickly handle faults and quickly restore power supply to ensure the operation of the power supply system.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a bus duct connector for rapid power supply restoration, comprising a connector end plate, an insulating partition, a metal connecting plate, a locking bolt, and a bolt insulating sleeve, wherein the metal connecting plate is placed between the insulating partitions, and the two connector end plates clamp the stacked insulating partition and are connected together by 1 to 2 locking bolts of the bolt insulating sleeve, characterized in that the width direction of the metal connecting plate is 12 mm to 150 mm higher than the width of the insulating partition, and at least one wiring hole is provided in the portion exceeding the width of the insulating partition, and the aperture of the wiring hole is 8.4 mm to 21 mm.

[0005] The wiring hole of the metal connecting piece is circular or square.

[0006] The metal connecting sheet is in a bent shape, and the upper part after bending is parallel to the lower part.

[0007] The portion of the metal connecting piece that exceeds the width of the insulating partition is provided with a hanging ear, and the hanging ear has a wiring hole.

[0008] The portion of the metal connecting piece that exceeds the width of the insulating partition is provided with a cylinder, and the cylinder is horizontally connected to the metal connecting piece.

[0009] A method for electrically connecting a bus duct connector for rapid power recovery comprises the following steps: S1: Hanging a plug-in box without connectors: Hang a plug-in box on the wall of the faulty bus duct area, with a molded case circuit breaker of the corresponding current size installed inside. The outgoing line of the circuit breaker is connected to the incoming line of the floor main switch in the meter box with a cable, and the outgoing line of the main switch is connected to the household meter with a cable; S2: Prefabricated metal connecting piece: Made of conductive plate, formed by stamping or cutting and welding. The width of the metal connecting piece is 12mm~150mm higher than the width of the insulating partition. At least one wiring hole is provided in the part exceeding the width of the insulating partition. The hole diameter of the wiring hole is 8.4mm~21mm. S3: Install the improved bus duct connector: first remove the faulty bus duct body and the connectors at both ends, insert one side of the two improved bus duct connectors into the ends of the intact upper bus duct body and the lower bus duct body respectively, and clamp each busbar with two metal connecting plates separated by insulating partitions inside the bus duct connector, and fit tightly, and then use 1~2 locking bolts of the bolt insulation sleeve to pass through the mounting holes on the connector end plate, the mounting holes on the stacked insulating partitions, and the mounting holes on the metal connecting plates to tighten; S4: Circuit connection: Use cables to connect the wiring holes of the metal connecting pieces on the upper and lower bus duct connectors one by one to conduct the busbars. At the same time, use cables to lead out from the wiring holes on the metal connecting pieces on the upper bus duct connector or the lower bus duct connector to the plug-in box without connectors on the wall of the faulty bus duct area, and further connect to the incoming line terminal of the circuit breaker, and the power supply to the faulty bus duct floor will be restored.

[0010] When the present invention is used, if the plug-in component of the faulty floor is burned, the plug-in component of the faulty floor is removed, and then a bus duct connector of the faulty floor is removed, and the improved bus duct connector of the present invention is replaced, and one end of the cable is connected to the wiring hole on each metal connecting plate on the bus duct connector of the present invention, and the other end of the cable is connected to the incoming line end of the circuit breaker in the plug-in box of the faulty floor, and the power supply of the faulty floor is quickly restored; if the bus duct of the faulty floor is burned, the main body of the faulty bus duct and the connectors at both ends of the bus duct are first removed, and one side of the two improved bus duct connectors of the present invention are respectively inserted into the upper section and the lower section For the intact main end of the bus duct, use 1 to 2 locking bolts of the bolt insulation sleeve to pass through the mounting holes on the connector end plate, the mounting holes on the stacked insulating partitions, and the mounting holes on the metal connecting plates to fasten them. Use cables to connect the wiring holes of the metal connecting plates on the upper and lower bus duct connectors one by one. At the same time, use cables to connect the wiring holes on the metal connecting plates on the upper bus duct connector or the lower bus duct connector to the incoming line terminal of the circuit breaker in the plug-in box without connectors on the wall of the faulty bus duct floor, so as to realize rapid power supply to the entire unit and the faulty bus duct floor.

[0011] The beneficial effects of the present invention are as follows: by improving the existing bus duct connector, a circuit quick connection function is realized. By setting a wiring hole on the metal connecting piece, the main body of the faulty bus duct can be skipped, and the wiring holes on the metal connecting pieces on the upper and lower bus duct connectors are connected with cables to realize unit power supply. At the same time, the wiring holes on the metal connecting pieces on the upper bus duct connector or the lower bus duct connector are connected with cables to the incoming line end of the circuit breaker in the plug-in box on the wall of the faulty bus duct area to restore the power supply to the floor of the faulty bus duct. Since the wiring is carried out on the bus duct connector, the construction is convenient, the handling is simple, the power supply can be quickly restored, and the speed of power repair is improved. At the same time, one line of the present invention can be directly connected to the incoming line end of the circuit breaker in the plug-in box, without the need to use copper clip connectors that are prone to failure, which greatly reduces power failures and ensures long-term stable operation of power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the double-bolt mounting hole connector of the present invention.

[0013] Figure 2 yes Figure 1 Schematic diagram of the structure of the left piece of the bent metal connecting piece with double bolt mounting holes in the middle.

[0014] Figure 3 yes Figure 1 Schematic diagram of the structure of the right piece of the bent metal connecting piece with double bolt mounting holes in the middle.

[0015] Figure 4 yes Figure 1 Double bolt mounting hole in the middle bent metal connecting piece left piece (see Figure 2 ) Right film (see Figure 3 ) Schematic diagram of the upper bonding structure after the two pieces are combined.

[0016] Figure 5 It is a structural schematic diagram of a flat plate-shaped single bolt mounting hole metal connecting piece of the present invention.

[0017] Figure 6 The present invention is a schematic diagram of the structure of a flat-plate metal connecting piece with double bolt mounting holes and hanging ears.

[0018] Figure 7 It is a structural schematic diagram of a single bolt mounting hole connector of the present invention.

[0019] Figure 8 The utility model is a schematic diagram of the circuit connection between the bus duct connector of the present invention and the bus duct body and the plug-in box.

[0020] In the figure: 1. metal connecting piece, 101. hanging ear, 102. cylinder, 2. insulating partition, 3. locking bolt, 4. bolt insulating sleeve, 5. upper bus duct body, 6. electric meter box, 601. floor main switch, 602. household electric meter, 7. plug-in box, 701. circuit breaker, 8. bus, 9. lower bus duct body, 10. cable, 11. fault bus duct body, 12. connector end plate. DETAILED DESCRIPTION

[0021] The present invention is further described below with reference to the accompanying drawings and embodiments. Figures 1 to 8, a busbar connector for rapid power restoration, comprising a connector end plate 12, an insulating partition 2, a metal connecting piece 1, a locking bolt 3, and a bolt insulating sleeve 4. The metal connecting piece 1 is placed between the insulating partitions 2, and two connector end plates 12 clamp the superposed insulating partitions 2 and are connected together by 1 to 2 locking bolts 3 sleeved with bolt insulating sleeves 4. It is characterized in that the width direction of the metal connecting piece 1 is 12 mm to 150 mm higher than the width of the insulating partition 2, and at least one wiring hole is provided in the part exceeding the width of the insulating partition 2, and the aperture of the wiring hole is 8.4 mm to 21 mm. The wiring hole of the metal connecting piece 1 is circular or square. The metal connecting piece 1 is bent, and the upper part and the lower part after bending are parallel. An ear 101 is provided in the part of the metal connecting piece 1 exceeding the width of the insulating partition 2, and there is a wiring hole on the ear 101. A cylinder 102 is provided in the part of the metal connecting piece 1 exceeding the width of the insulating partition 2, and the cylinder 102 is horizontally connected to the metal connecting piece 1.

[0022] Combined with Figure 1 , Figure 7 , see Figure 8 , an electrical connection method for a busbar connector for rapid power restoration, comprising the following steps: S1: Hanging a plug-in box 7 without a plug-in part: Hang the plug-in box 7 on the wall of the faulty busbar area. A molded case circuit breaker 701 with a corresponding current magnitude is assembled inside. The outgoing line end of the circuit breaker 701 is connected to the incoming line end of the floor main switch 601 in the meter box 6 by a cable 10, and the outgoing line end of the main switch 601 is then connected to the household meter 602 by a cable 10. S2: Preparing the metal connecting piece 1: Made of a conductive plate and formed by stamping or cutting and welding. The width direction of the metal connecting piece 1 is 12 mm to 150 mm higher than the width of the insulating partition 2, and at least one wiring hole is provided in the part exceeding the width of the insulating partition 2, and the aperture of the wiring hole is 8.4 mm to 21 mm. S3: Installing the improved busbar connector: First, remove the faulty busbar main body 11 and its connectors at both ends. Insert one side of two improved busbar connectors into the ends of the intact upper-segment busbar main body 5 and the lower-segment busbar main body 9 respectively. The two metal connecting pieces 1 separated by the insulating partition 2 inside the busbar connector clamp each busbar 8 and fit tightly. Then, use 1 to 2 locking bolts 3 sleeved with bolt insulating sleeves 4 to pass through the mounting holes on the two connector end plates 12, the mounting holes on the superposed insulating partitions 2, and the mounting holes on the metal connecting piece 1 for fastening. S4: Circuit connection: Use cable 10 to connect the wiring holes of the metal connecting piece 1 on the upper and lower bus duct connectors one by one to conduct the busbar. At the same time, use cable 10 to lead out from the wiring holes on the metal connecting piece 1 on the upper bus duct connector or the lower bus duct connector to the plug-in box 7 without connectors on the wall of the faulty bus duct area, and further connect to the incoming line terminal of the circuit breaker 701, and the power supply to the faulty bus duct floor is restored.

[0023] like Figure 1 , Figure 7 As shown, the improved bus duct connector of the present invention tries not to change the original accessory size and assembly method so as to dock with the original bus duct. The connector end plate 12, insulating partition 2, locking bolt 3, and bolt insulating sleeve 4 used keep the original specifications and dimensions unchanged. The metal connecting piece 1 replaces the original conductive connecting piece hidden in the insulating partition 2, and the position of the bolt connection installation hole in the middle remains unchanged. The width direction of the metal connecting piece 1 in the vertical direction of the bus 8 is changed, which is 12mm~150mm higher than the width of the insulating partition 2, in order to leave a position for the wiring hole. The length of the metal connecting piece 1 in the parallel direction to the bus 8 is consistent with the length of the original conductive connecting piece. At least one wiring hole is provided in the part of the metal connecting piece 1 that exceeds the width of the insulating partition 2. The positions of the wiring holes on the two metal connecting pieces 1 bonded to each bus 8 are the same. The position of the wiring holes on the metal connecting piece 1 on each bus 8 is staggered as much as possible with the positions of the wiring holes on the two metal connecting pieces 1 bonded to other bus 8, so that the wiring holes on the metal connecting pieces 1 of each phase are conveniently connected to the cables 10. The wiring hole is a circular hole with a diameter of 8.4mm~21mm. The wiring hole is a square hole with a side length of 8.4mm~21mm. The purpose of designing a square wiring hole is to facilitate the use of a semicircular head square neck bolt to clamp on the square wiring hole, which brings convenience to the wiring of the cable 10. It is best to set 2~3 wiring holes on each metal connecting plate 1 (see Figure 2~Figure 6 ), so that it is convenient to connect the wires during emergency repair. The metal connecting piece 1 is made of a conductive plate such as a copper plate or an aluminum plate or a copper-aluminum composite plate, and is formed by stamping or cutting and welding. The wiring hole of the metal connecting piece 1 can be made into a circle or a square, or a combination of a circle and a square. The hanging ear 101 can also be combined with the cylinder 102 (see Figure 2 ), which is convenient for electrician wiring selection and is used to connect the cable 10. In order to fit the upper parts of the two metal connecting sheets 1 together, the metal connecting sheet 1 is processed into a bent shape, and the bent upper part is parallel to the lower part (see Figure 2 , Figure 3 and Figure 2 , Figure 3 Combination of Figure 4), for the convenience of installation, it is best to use silver welding or copper welding to weld the upper parts of the two bent metal connecting pieces 1 into one piece. After the two bent metal connecting pieces 1 are welded, the gap at the lower part is slightly larger than the thickness of the busbar 8 by 0.1mm~0.2mm, which is convenient for the metal connecting piece 1 to be clamped on the busbar 8. The part of the metal connecting piece 1 that exceeds the width of the insulating partition 2 can be processed into a hanging ear 101, and the hanging ear 101 has a wiring hole. The part of the metal connecting piece 1 that exceeds the width of the insulating partition 2 can also be welded or rolled into a cylinder 102, and the cylinder 102 is horizontally connected to the metal connecting piece 1 (see Figure 2 ). The metal connecting piece 1 is made according to the specifications and dimensions of the connector matching the bus duct, with a thickness of 2mm~5mm, a width of 67mm~285mm in the direction perpendicular to the busbar 8, and a length of 120mm~160mm in the direction parallel to the busbar 8. The mounting hole of the metal connecting piece 1 is preferably designed as a waist-shaped hole so that the locking bolt 3 can be quickly fine-tuned into place during installation, saving repair time. During installation, the two metal connecting pieces 1 separated by the insulating partition 2 inside the bus duct connector clamp each busbar 8 tightly, and then use 1~2 locking bolts 3 of the bolt insulation sleeve 4 to pass through the left and right connector end plates 12 to clamp the mounting holes on the stacked insulating partition 2 and the mounting holes on the metal connecting piece 1 to tighten them.

[0024] Figure 8 The improved electrical connection method of the bus duct connector of the present invention is provided, which is applicable to the AC power supply with a rated voltage of less than 660V and a frequency of 50Hz in high-rise residential buildings, and a three-phase four-wire or three-phase five-wire power supply and distribution with a rated current of 400A~1600A. Whether it is a bus duct connector with a double bolt mounting hole or a single bolt mounting hole, its circuit connection method remains unchanged. The rapid repair of power outages includes the following steps: S1: Hanging the plug-in box 7 without plug-in components: Drive expansion bolts with a diameter of 8mm~12mm on the wall of the faulty bus duct area, hang the plug-in box 7, and install no plug-in components inside the plug-in box 7. Assemble the molded case circuit breaker 701 of the corresponding current size according to the routine. The outgoing end of the circuit breaker 701 is connected to the incoming end of the floor main switch 601 in the meter box 6 with a cable 10, and the outgoing end of the main switch 601 is connected to the household meter 602 with a cable 10; S2: Prefabricated metal connecting piece 1: Made of conductive plate, when a power outage occurs in a faulty unit, first check the material of the busbar 8 in the bus duct of the unit, whether it is made of copper or aluminum, and use a spare part of the same corresponding material for the metal connecting piece 1. For busbars 8 made of aluminum, the metal connecting piece 1 can also be made of copper-aluminum composite plate. During installation, the aluminum side of the metal connecting piece 1 is bonded to the aluminum busbar 8, and the other copper side of the metal connecting piece 1 is bonded to the copper cable 10, in order to achieve aluminum-copper transition and ensure stable power supply. The metal connecting piece 1 is formed by stamping or cutting, and the width direction of the metal connecting piece 1 is 12mm~150mm higher than the width of the insulating partition 2. At least one wiring hole is provided in the portion exceeding the width of the insulating partition 2. The wiring hole is a circular hole with a hole diameter of 8.4mm~21mm, or a square hole with a hole diameter side length of 8.4mm~21mm; S3: Install the improved bus duct connector: first remove the faulty bus duct body 11 and the connectors at both ends thereof, insert one side of the two improved bus duct connectors into the ends of the intact upper bus duct body 5 and the lower bus duct body 9 respectively, and clamp each bus 8 with two metal connecting plates 1 separated by an insulating partition 2 inside the bus duct connector, and fit tightly, and then use the locking bolts 3 with a diameter of 8mm~14mm with the bolt insulating sleeve 4 to pass through the mounting holes on the two connector end plates 12, the mounting holes on the stacked insulating partition 2, and the mounting holes on the metal connecting plates 1 to tighten; S4: Circuit connection: disconnect the faulty bus duct body 11, use cables 10 to connect the wiring holes of the metal connecting pieces 1 on the upper and lower bus duct connectors one by one, and conduct the busbars. At the same time, use cables 10 to lead out from the wiring holes on the metal connecting pieces 1 on the upper bus duct connector or the lower bus duct connector to the plug-in box 7 without connectors on the wall of the faulty bus duct area, and further connect to the incoming line end of the circuit breaker 701, and the power supply of the faulty bus duct floor is restored; S5: Assembly and debugging: Check whether the connection of each phase circuit is accurate and standard, use a multimeter to detect whether the connection is normal, restore the unit power supply, then close the circuit breaker 701 switch, detect the current and voltage, if normal, supply power to the household meter box 6.

[0025] Example 1: Unit 1 of the 32-story office building in Building 56 of Gaoneng Community has 21 households on each floor and a large power load. The bus duct on the 4th floor burned out and emergency repairs were required on site. It was found that the power supply of the unit was a three-phase four-wire high-strength plug-in bus duct, the bus duct shell was grounded, the rated voltage was 380V, the frequency was 50Hz, and the rated current was 1600A. The bus duct dimensions are as follows: width 255mm, height 270mm; the four busbars 8 are made of copper plates with a width of 120mm and a thickness of 10mm; the connector end plate 12 is 220mm long, 150mm wide, and 5mm thick. The diameter of the two mounting holes in the middle is 22mm, and the distances from the center points of the two mounting holes to the edges are equal, with a center distance of 80mm; the insulating partition 2 is 200mm long, 150mm wide, and 10mm thick. The diameter of the two mounting holes in the middle is 22mm, and the distances from the center points of the two mounting holes to the edges are equal, with a center distance of 80mm; the original copper conductive connecting piece is 160mm long, 120mm wide, and 5mm thick. The diameter of the two mounting holes in the middle is 30mm, and the distances from the center points of the two mounting holes to the edges are equal, with a center distance of 80mm. Plug-in box 7 dimensions: height 500mm, width 250mm, side thickness 150mm; circuit breaker rated current 250A; meter box 6 dimensions: height 1040mm, width 1546mm, side thickness 155mm; floor main switch rated current 250A. Figure 1 As shown, the improved bus duct connector of this embodiment uses a connector end plate 12, an insulating partition 2, a locking bolt 3, and a bolt insulating sleeve 4, and the original specifications and dimensions are maintained unchanged. The left and right copper metal connecting pieces 1 are bent (see Figure 2 , Figure 3 ), replace the original copper conductive connecting piece hidden in the insulating partition 2, the position and center distance of the two bolt connection mounting holes remain unchanged, the metal connecting piece 1 is 120mm wide, 5mm thick, the hole type is 34mm×26mm, the rounded corner radius is 13mm, the center distance between the two mounting holes is 80mm, and the center distance of the mounting hole is 60mm from the bottom edge. The widest part of the metal connecting piece 1 in the vertical direction to the busbar 8 (including the hanging ear 101) is higher than the width of the insulating partition 2 by 150mm (vertical distance), that is, the widest part of the metal connecting piece 1 is 285mm (calculation method: 60mm from the center of the mounting hole of the metal connecting piece 1 to the bottom edge + 150mm / 2 of the width of the insulating partition 2 + 150mm of the width of the exposed insulating partition 2), leaving a position for the wiring hole. The length of the metal connecting piece 1 in the direction parallel to the busbar 8 is 160mm. The part of the left metal connecting piece 1 that exceeds the width of the insulating partition 2 by 150mm is provided with three wiring holes, which are a combination of two square wiring holes and one cylinder 102 (see for details). Figure 2), the ear 101 is a 30mm×30mm square, the diameters of the square wiring holes on both sides are different, the side lengths of the diameters are 20.5mm and 10.5mm respectively, the outer diameter of the cylinder 102 is 45.0mm, the inner diameter is 35.0mm, and the length is 85mm. The cylinder 102 is placed horizontally and welded into one piece. The right metal connecting piece 1 that exceeds the width of the insulating partition 2 by 150mm has two square wiring holes (see Figure 3 ), the hanging ear 101 is a 30mm×30mm square, and the apertures of the square wiring holes on both sides are different, with the side lengths of the apertures being 20.5mm and 10.5mm respectively, corresponding to the square wiring holes on the left metal connecting piece 1. The metal connecting piece 1 is made of copper plate as an accessory and formed by stamping. For easy installation, it is best to weld the hanging ears 101 on the upper parts of the left and right bent metal connecting pieces 1 together by silver welding or copper welding. After the two bent metal connecting pieces 1 are welded, the gap at the lower part is 10.2mm, which facilitates the metal connecting piece 1 to be in place in one step and clamped on the busbar 8. In order to better and firmly combine the busbar 8 with the metal connecting plate 1, a mounting hole with a diameter of 22 mm is drilled in the middle of the end of the busbar 8. During installation, the left and right metal connecting plates 1 separated by the insulating partition 2 inside the busbar duct connector clamp each busbar 8 tightly, and then the locking bolt 3 with a diameter of 14 mm with the bolt insulating sleeve 4 is passed through the mounting hole on the left connector end plate 12, and then passed through the mounting holes on the stacked insulating partition 2, the mounting holes on the metal connecting plate 1, the mounting holes on the busbar 8, and the mounting holes on the right connector end plate 12 in turn to tighten.

[0026] Combination Figure 1 , Figure 8 The emergency repair and installation operation steps of this embodiment are as follows: 1. Hang the plug-in box 7 without plug-in components: Install the expansion bolts with a diameter of 12mm on the wall of the fault bus duct area, hang the plug-in box 7, and install the 250A molded case circuit breaker 701 as usual. The cable 10 for the plug-in box 7 is 50mm. 2 For four-core cables, DTM50 copper terminals with a screw hole diameter of 10.5mm are pressed at both ends of each core (see GB / T14315-2008 standard size for details) to facilitate wiring. The outlet of the circuit breaker 701 is connected to the DTM50 copper terminal at one end of the four-core cable 10 with a 10mm bolt, and then the DTM50 copper terminal at the other end of the four-core cable 10 is connected to the incoming line end of the 250A floor main switch 601 in the meter box 6 with a 10mm bolt. The outlet of the main switch 601 is then connected to the household meter 602 with a cable 10; 2. Prefabricated metal connecting piece 1: Made of 5mm thick copper plate, a set of two metal connecting pieces 1 on the left and right are punched into a bent shape by a punching machine (see Figure 2 , Figure 3), the specific parameters are: the punched bolt mounting hole is 34mm×26mm, a waist-shaped hole with a fillet radius of 13mm, and the center of the mounting hole is 60mm away from the bottom edge; the metal connecting piece 1 is 285mm widest in the direction perpendicular to the busbar 8, including the hanging ear 101, and the length in the direction parallel to the busbar 8 is 160mm; in this way, when the metal connecting piece 1 is attached to the insulating partition 2, the width exposed to the insulating partition 2 is 150mm, and the width hidden in the insulating partition 2 is 135mm. The hanging ear 101 punched out of the metal connecting piece 1 is a 30mm×30mm square, and the corresponding wiring holes are two square wiring holes of 20.5mm×20.5mm and 10.5mm×10.5mm, which is convenient for using M20 and M10 semicircular head square neck bolts to clamp on the square wiring holes, which brings convenience to the connection of the cable 10. During production, the positions of the wiring holes on each group of metal connecting pieces 1 are staggered to facilitate wiring. Because there are at most three electrical connections, in order to avoid parallel lines, a cylinder 102 is horizontally welded on the upper edge of one of the metal connecting pieces 1 to form a cylindrical wiring hole. The cylinder 102 has an outer diameter of 45.0 mm, an inner diameter of 35.0 mm, and a length of 85 mm, so as to provide a 630 mm 2 The copper core cable 10 is inserted, and two wire fixing holes with thread holes are drilled on the body of the cylinder 102 (see Figure 2 ), the cable 10 is fixed with screws after being inserted. For the convenience of installation, it is best to pre-weld the ears 101 on the upper parts of the left and right bent metal connecting pieces 1 together by silver soldering or copper soldering. After the two bent metal connecting pieces 1 are welded, the gap at the lower part is 10.2mm, which is convenient for the metal connecting piece 1 to be clamped on the busbar 8.

[0027] 3. Install the improved bus duct connector: first remove the faulty bus duct body 11 and the connectors at both ends, insert one side of the two improved bus duct connectors into the ends of the intact upper bus duct body 5 and the lower bus duct body 9, respectively, and clamp each bus 8 with two metal connecting plates 1 separated by an insulating partition 2 inside the bus duct connector, and fit tightly, and then use the locking bolts 3 with a diameter of 14 mm with the bolt insulation sleeve 4 to pass through the mounting holes on the two connector end plates 12, the mounting holes on the stacked insulating partition 2, the mounting holes on the metal connecting plates 1, and the mounting holes on the bus 8 to tighten; 4. Circuit connection: Open the faulty bus duct body 11, and the upper bus duct body 5 and the lower bus duct body 9 use 630mm 2 Single-core cable 10 connection, each single-core cable has a DTM630 copper terminal block with a screw hole diameter of 21mm (see GB / T14315-2008 standard size for details). Use M20 semicircular head square neck bolts to fix the 630mm 2The single-core cable 10 is connected to the 20.5mm×20.5mm square wiring holes of the metal connecting piece 1 on the upper and lower bus duct connectors one by one, and the busbar is connected and the bus duct shell is grounded. At the same time, the DTM50 copper terminal blocks are connected together with M10 semicircular head square neck bolts from another 10.5mm×10.5mm square wiring hole on the metal connecting piece 1 on the upper bus duct connector or the lower bus duct connector. The 50mm on the DTM50 copper terminal blocks 2 The cable 10 is led out to the plug box 7 without plug-in components on the wall of the faulty bus duct area, and further connected to the incoming line terminal of the circuit breaker 701, so that the floor of the faulty bus duct is powered; 5. Assembly and debugging: Check whether the connection of each phase circuit is accurate and standardized, use a multimeter to detect whether the connection is normal, restore the power supply of the unit, then close the circuit breaker 701 switch, check the current and voltage, if normal, supply power to the household meter box 6.

[0028] Example 2: Unit 1 of the 26-story residential building 8 in Yutiancheng Community has 12 households on each floor and a large power load. The bus duct on the 12th floor burned out and emergency repairs were required on site. It was found that the power supply of the unit was a three-phase five-wire air plug-in bus duct with a rated voltage of 380V, a frequency of 50Hz, and a rated current of 1250A. The bus duct has the following dimensions: width 275mm, height 230mm; the five busbars 8 are made of copper plates, of which four busbars 8 are 100mm wide and 8mm thick, and one grounding busbar 8 is 100mm wide and 4mm thick; the connector end plate 12 is 200mm long, 130mm wide and 5mm thick, the two mounting holes in the middle have a diameter of 20mm, the distances from the center points of the two mounting holes to the edges are equal, and the center distance is 60mm; the insulating partition 2 is 180mm long, 130mm wide and 10mm thick, the two mounting holes in the middle have a diameter of 20mm, the distances from the center points of the two mounting holes to the edges are equal, and the center distance is 60mm; the original copper conductive connecting piece is 140mm long, 100mm wide and 4mm thick, the two mounting holes in the middle have a diameter of 30mm, the distances from the center points of the two mounting holes to the edges are equal, and the center distance is 60mm, and the center of the mounting hole is 50mm away from the bottom edge. Plug-in box 7 dimensions: height 500mm, width 250mm, side thickness 150mm; circuit breaker rated current 200A. Meter box 6 dimensions: height 1040mm, width 1016mm, side thickness 155mm; floor main switch rated current 200A. Figure 1 As shown, the improved bus duct connector of this embodiment uses a connector end plate 12, an insulating partition 2, a locking bolt 3, and a bolt insulating sleeve 4, and the original specifications and dimensions are maintained unchanged. The left and right copper metal connecting pieces 1 are bent (see Figure 2 , Figure 3), replacing the original copper conductive connecting piece hidden in the insulating partition 2, the position and center distance of the two bolt connection mounting holes remain unchanged, the metal connecting piece 1 is 100mm wide, 4mm thick, the hole type is 32mm×22mm, the rounded corner radius is 11mm, the center distance between the two mounting holes is 60mm, and the center distance of the mounting hole is 50mm from the bottom edge. The widest part of the metal connecting piece 1 in the vertical direction to the busbar 8 (including the hanging ear 101) is higher than the width of the insulating partition 2 by 130mm (vertical distance), that is, the widest part of the metal connecting piece 1 is 245mm (calculation method: 50mm from the bottom edge of the center of the mounting hole of the metal connecting piece 1 + 130mm / 2 of the width of the insulating partition 2 + 130mm of the width of the exposed insulating partition 2), leaving a position for the wiring hole. The length of the metal connecting piece 1 in the direction parallel to the busbar 8 remains unchanged, which is 140mm. The part of the left metal connecting piece 1 that exceeds the width of the insulating partition 2 by 130mm is provided with three wiring holes, which are a combination of two square wiring holes and one cylinder 102 (see for details). Figure 2 ), the ear 101 is a rectangle with a height of 35mm and a width of 25mm. The diameters of the square wiring holes on both sides are different, and the side lengths of the diameters are 20.5mm and 10.5mm respectively; the outer diameter of the cylinder 102 is 34.0mm, the inner diameter is 26.0mm, and the length is 70mm. The metal connecting piece 1 is made of copper plate as an accessory, which is formed by stamping. The middle cylindrical wiring hole is welded into one body by placing the cylinder 102 horizontally. The right metal connecting piece 1 is opened with two square wiring holes in the part that exceeds the width of the insulating partition 2 by 130mm (see Figure 3 ), the hanging ear 101 is a rectangle with a height of 35mm and a width of 25mm. The diameters of the square wiring holes on both sides are different, and the side lengths of the diameters are 20.5mm and 10.5mm respectively, corresponding to the square wiring holes on the left metal connecting plate 1. A mounting hole with a diameter of 20mm is drilled in the middle of the end of the busbar 8. During installation, the left and right metal connecting plates 1 separated by the insulating partition 2 inside the busbar duct connector clamp each busbar 8 tightly, and then the locking bolts 3 with a diameter of 12mm with the bolt insulating sleeve 4 are passed through the left and right connector end plates 12 to clamp the mounting holes on the stacked insulating partition 2, the mounting holes on the metal connecting plate 1, and the mounting holes on the busbar 8 to tighten.

[0029] Combination Figure 1 , Figure 8 The emergency repair and installation operation steps of this embodiment are as follows: 1. Hang the plug-in box 7 without plug-in components: Install the expansion bolts with a diameter of 10mm on the wall of the fault bus duct area, hang the plug-in box 7, and install the 200A molded case circuit breaker 701 as usual. The cable 10 for the plug-in box 7 is 50mm. 2Five-core cable, each core is pressed with DTM50 copper terminals with a screw hole diameter of 10.5mm at both ends to facilitate wiring. The outlet of the circuit breaker 701 is connected to the DTM50 copper terminal at one end of the five-core cable 10 with a 10mm bolt, and then the DTM50 copper terminal at the other end of the five-core cable 10 is connected to the incoming line end of the 200A floor main switch 601 in the meter box 6 with a 10mm bolt. The outlet of the main switch 601 is then connected to the household meter 602 with a cable 10; 2. Prefabricated metal connecting piece 1: Made of 4mm thick copper plate, a group of two metal connecting pieces 1 on the left and right are punched into a bent shape by a punching machine (see Figure 2 , Figure 3 ), the specific parameters are: the punched bolt mounting hole is 32mm×22mm, a waist-shaped hole with a fillet radius of 11mm, and the center of the mounting hole is 50mm away from the bottom edge; the widest part of the metal connecting piece 1 including the hanging ear 101 in the direction perpendicular to the busbar 8 is 245mm, and the length in the direction parallel to the busbar 8 is 140mm; in this way, when the metal connecting piece 1 is attached to the insulating partition 2, the width exposed to the insulating partition 2 is 130mm, and the width hidden in the insulating partition 2 is 115mm; the hanging ears 101 punched out of the left and right metal connecting pieces 1 are rectangular with a height of 35mm and a width of 25mm, and the corresponding wiring holes are two square wiring holes of 20.5mm×20.5mm and 10.5mm×10.5mm, which is convenient for using M20 and M10 semi-circular head square neck bolts to clamp on the square wiring holes, bringing convenience to the connection of the cable 10. During production, the positions of the wiring holes on each group of metal connecting pieces 1 are staggered to facilitate wiring. Because there are at most three electrical connections, in order to avoid parallel lines, a cylinder 102 is horizontally welded on the upper edge of one of the metal connecting pieces 1 to form a cylindrical wiring hole. The cylinder 102 has an outer diameter of 34.0 mm, an inner diameter of 26.0 mm, and a length of 70 mm, so as to provide a 400 mm 2 The copper core cable 10 is inserted. Two wire fixing holes with threaded openings are drilled on the cylinder 102 (see Figure 2 ), the cable 10 is inserted and fixed with screws; 3. Install the improved bus duct connector: first remove the faulty bus duct body 11 and the connectors at both ends, insert one side of the two improved bus duct connectors into the ends of the intact upper bus duct body 5 and the lower bus duct body 9, respectively, and clamp each bus 8 with two metal connecting plates 1 separated by an insulating partition 2 inside the bus duct connector, and fit tightly, and then use the locking bolts 3 with a diameter of 12 mm with the bolt insulation sleeve 4 to pass through the mounting holes on the two connector end plates 12, the mounting holes on the stacked insulating partition 2, the mounting holes on the metal connecting plates 1, and the mounting holes on the bus 8 to tighten; 4. Circuit connection: Open the faulty bus duct body 11, and the upper bus duct body 5 and the lower bus duct body 9 use 400mm2 Single-core cable 10 connection, each single-core cable ends pressed screw hole diameter 21mm DTM400 copper terminal (see GB / T14315-2008 standard size). Use M20 semicircular head square neck bolts 400mm 2 The single-core cables 10 are connected one by one to the 20.5mm×20.5mm square wiring holes of the metal connecting piece 1 on the upper and lower bus duct connectors to conduct and ground the busbar. At the same time, the DTM50 copper terminal blocks are connected together using M10 semicircular head square neck bolts from another 10.5mm×10.5mm square wiring hole on the metal connecting piece 1 on the upper bus duct connector or the lower bus duct connector. The 50mm on the DTM50 copper terminal blocks 2 The cable 10 is led out to the plug box 7 without plug-in components on the wall of the faulty bus duct area, and further connected to the incoming line terminal of the circuit breaker 701, so that the floor of the faulty bus duct is powered; 5. Assembly and debugging: Check whether the connection of each phase circuit is accurate and standardized, use a multimeter to detect whether the connection is normal, restore the power supply of the unit, then close the circuit breaker 701 switch, check the current and voltage, if normal, supply power to the household meter box 6.

[0030] Example 3: Unit 1 of the 26-story residential building in Building 9 of Boulder Park No. 1 Community has 9 households on each floor. The bus duct on the 8th floor burned and emergency repairs were required on site. After investigation, it was found that the power supply of the unit was a three-phase four-wire intensive insulated plug-in bus duct, the bus duct shell was grounded, the rated voltage was 380V, the frequency was 50Hz, and the rated current was 1000A. The bus duct dimensions are as follows: width 255mm, height 220mm; the four busbars 8 are made of copper plates with a width of 80mm and a thickness of 6mm; the connector end plate 12 is 180mm long, 110mm wide, and 5mm thick. There is a bolt mounting hole in the middle with a diameter of 20mm, and the distance from the center point of the mounting hole to each side is equal; the insulating partition 2 is 160mm long, 110mm wide, and 10mm thick. There is a bolt mounting hole in the middle with a diameter of 20mm, and the distance from the center point of the mounting hole to each side is equal; the original copper conductive connecting piece is 120mm long, 80mm wide, and 3mm thick. There is a bolt mounting hole in the middle with a diameter of 28mm, and the distance from the center point of the mounting hole to each side is equal. Plug-in box 7 dimensions: height 500mm, width 250mm, side thickness 150mm; circuit breaker rated current 150A; meter box 6 dimensions: height 1040mm, width 810mm, side thickness 155mm; floor main switch rated current 150A. Figure 7 As described above, the improved bus duct connector of this embodiment uses a connector end plate 12, an insulating partition 2, a locking bolt 3, and a bolt insulating sleeve 4, which maintain the original specifications and dimensions. The two copper metal connecting plates 1 use a flat single bolt mounting hole (see Figure 5), replacing the original copper conductive connecting piece hidden in the insulating partition 2, the position of the bolt connection mounting hole remains unchanged, the metal connecting piece 1 is 80mm wide, 3mm thick, the hole type is 32mm×22mm, the rounded corner radius is 11mm, and the center of the mounting hole is 40mm away from the bottom edge. The metal connecting piece 1 is 110mm higher than the width of the insulating partition 2 in the vertical direction of the busbar 8, that is, the width of the metal connecting piece 1 is 205mm (calculation method: the center of the mounting hole of the metal connecting piece 1 is 40mm away from the bottom edge + the width of the insulating partition 2 is 110mm / 2 + the width of the exposed insulating partition 2 is 110mm), leaving a position for the wiring hole. The length of the metal connecting piece 1 in the direction parallel to the busbar 8 is 120mm. Three circular wiring holes are correspondingly provided for the parts of the left and right metal connecting pieces 1 that exceed the width of the insulating partition 2 by 110mm (see details). Figure 5 ), the diameter of the circular wiring holes on both sides is the same, which is 20.5mm, which is convenient for thick cable connection and meets the power supply requirements after the conductive busbar 8 in the bus duct is connected with the cable 10. The diameter of the middle circular wiring hole is 10.5mm, which is used to connect the corresponding cable 10 to the plug-in box 7. The metal connecting piece 1 is made of copper plate as an accessory and is formed by stamping. During installation, the upper edge of the inner side of the insulating partition 2 is first ground off to facilitate the left and right metal connecting pieces 1 to be flat with the busbar 8. The left and right metal connecting pieces 1 separated by the insulating partition 2 inside the bus duct connector clamp each busbar 8 tightly, and then the locking bolt 3 with a diameter of 10mm with the bolt insulation sleeve 4 is passed through the mounting hole on the left connector end plate 12, and then passed through the mounting hole on the stacked insulating partition 2, the mounting hole on the metal connecting piece 1, and the mounting hole on the right connector end plate 12 to tighten.

[0031] Combination Figure 5 ,refer to Figure 7 , Figure 8 (The double-bolt mounting hole connector in the figure replaces the single-bolt mounting hole bus duct connector in this embodiment). The emergency repair installation operation steps of this embodiment are as follows: 1. Hang the plug-in box 7 without plug-in components: Install the expansion bolts with a diameter of 10mm on the wall of the fault bus duct area, hang the plug-in box 7, and install the 150A molded case circuit breaker 701 as usual. The cable 10 for the plug-in box 7 is 35mm. 2 For four-core cables, DTM35 copper terminals with a screw hole diameter of 10.5mm are pressed at both ends of each core (see GB / T14315-2008 standard size for details) to facilitate wiring. The outlet of the circuit breaker 701 is connected to the DTM35 copper terminal at one end of the four-core cable 10 with a 10mm bolt, and then the DTM35 copper terminal at the other end of the four-core cable 10 is connected to the incoming line end of the 150A floor main switch 601 in the meter box 6 with a 10mm bolt. The outlet of the main switch 601 is then connected to the household meter 602 with a cable 10; 2. Prefabricated metal connecting piece 1: Made of 3mm thick copper plate, a set of two metal connecting pieces 1 are punched out by a punching machine (see Figure 5 ), the specific parameters are: the punched bolt mounting hole has a hole shape of 32mm×22mm, a waist-shaped hole with a fillet radius of 11mm, and the center of the mounting hole is 40mm away from the bottom edge; the width of the metal connecting piece 1 in the vertical direction to the busbar 8 is 205mm, and the length in the direction parallel to the busbar 8 is 120mm; in this way, when the metal connecting piece 1 is fitted with the insulating partition 2, the width exposed to the insulating partition 2 is 110mm, and the width hidden in the insulating partition 2 is 95mm. The diameter of the middle wiring hole punched out of the metal connecting piece 1 is 10.5mm, and the diameter of the wiring holes on both sides is 20.5mm, which is convenient for connection with M10 and M20 bolts. During production, the positions of the wiring holes on each group of metal connecting pieces 1 are staggered to facilitate wiring.

[0032] 3. Install the improved bus duct connector: first remove the faulty bus duct body 11 and the connectors at both ends, insert one side of the two improved bus duct connectors into the ends of the intact upper bus duct body 5 and the lower bus duct body 9, respectively, and clamp each bus 8 with two metal connecting plates 1 separated by an insulating partition 2 inside the bus duct connector, and fit tightly, and then use the locking bolts 3 with a diameter of 10 mm with the bolt insulation sleeve 4 to pass through the mounting holes on the two connector end plates 12, the mounting holes on the stacked insulating partition 2, and the mounting holes on the metal connecting plates 1 to tighten; 4. Circuit connection: Open the faulty bus duct body 11, and the upper bus duct body 5 and the lower bus duct body 9 use 300mm 2 Single-core cable 10 connection, each single-core cable ends pressed screw hole diameter 21mm DTM300 copper terminal (see GB / T14315-2008 standard size). Use M20 bolts 300mm 2 The DTM300 copper terminal blocks on the single-core cable 10 are connected one by one to the 20.5mm diameter circular wiring holes of the metal connecting piece 1 on the upper and lower bus duct connectors to conduct the busbars. During installation, it is best to insert the nose of the DTM300 copper terminal block between the installation holes of the left and right metal connecting pieces 1 on each bus 8 to make the connection fit tightly. The bus duct shell is grounded. At the same time, use M10 bolts to connect the DTM35 copper terminal blocks together from another 10.5mm diameter circular wiring hole on the metal connecting piece 1 on the upper bus duct connector or the lower bus duct connector. The 35mm diameter on the DTM35 copper terminal blocks 2 The cable 10 is led out to the plug box 7 without plug-in components on the wall of the faulty bus duct area, and further connected to the incoming line terminal of the circuit breaker 701, so that the floor of the faulty bus duct is powered; 5. Assembly and debugging: Check whether the connection of each phase circuit is accurate and standardized, use a multimeter to detect whether the connection is normal, restore the power supply of the unit, then close the circuit breaker 701 switch, check the current and voltage, if normal, supply power to the household meter box 6.

[0033] Example 4: Unit 1 of the 15-story residential building 2 in Yishui Tiancheng Community, with 6 households on each floor, needs emergency repair on site because the bus duct on the 7th floor is burned. It is found that the power supply of the unit adopts a three-phase four-wire air plug-in bus duct, the bus duct shell is grounded, the rated voltage is 380V, the frequency is 50Hz, and the rated current is 800A. The bus duct dimensions are as follows: width 255mm, height 190mm; the four busbars 8 are made of aluminum plates with a width of 60mm and a thickness of 8mm; the connector end plate 12 is 160mm long, 90mm wide, and 5mm thick. The diameter of the two mounting holes in the middle is 20mm, and the distances from the center points of the two mounting holes to the edges are equal, with a center distance of 60mm; the insulating partition 2 is 140mm long, 90mm wide, and 10mm thick. The diameter of the two mounting holes in the middle is 20mm, and the distances from the center points of the two mounting holes to the edges are equal, with a center distance of 60mm; the original aluminum conductive connecting piece is 120mm long, 60mm wide, and 4mm thick. The diameter of the two mounting holes in the middle is 30mm, and the distances from the center points of the two mounting holes to the edges are equal, with a center distance of 60mm. Plug-in box 7 dimensions: height 500mm, width 250mm, side thickness 150mm; circuit breaker rated current 150A; meter box 6 dimensions: height 1040mm, width 648mm, side thickness 155mm; floor main switch rated current 150A. Figure 1 As shown, the improved bus duct connector of this embodiment uses a connector end plate 12, an insulating partition 2, a locking bolt 3, and a bolt insulating sleeve 4, and the original specifications and dimensions are maintained unchanged. The left and right copper-aluminum composite metal connecting piece 1 is a flat plate (see Figure 6 ), replace the original aluminum conductive connecting piece hidden in the insulating partition 2, the position and center distance of the two bolt connection mounting holes remain unchanged, the metal connecting piece 1 is 60mm wide, 4mm thick, the hole type is 30mm×20mm, the rounded corner radius is 10mm, the center distance between the two mounting holes is 60mm, and the center distance of the mounting hole is 30mm from the bottom edge. The width of the metal connecting piece 1 in the vertical direction to the busbar 8 (including the hanging ear 101) is 100mm higher than the width of the insulating partition 2, that is, the widest width of the metal connecting piece 1 is 175mm (calculation method: 30mm from the bottom edge to the center of the mounting hole of the metal connecting piece 1 + 90mm / 2 of the width of the insulating partition 2 + 100mm of the width of the exposed insulating partition 2), leaving space for the wiring hole. The length of the metal connecting piece 1 in the direction parallel to the busbar 8 is 120mm. Three circular wiring holes are correspondingly opened on the hanging ears 101 set on the part of the left and right metal connecting pieces 1 that exceeds the width of the insulating partition 2 by 100mm (see details) Figure 6 ), the diameter of the circular wiring holes on both sides is the same, with a diameter of 16.5mm, which is convenient for thick cable connection and meets the power supply requirements after the conductive busbar 8 in the bus duct is connected with the cable 10. The diameter of the middle circular wiring hole is 10.5mm, which is used to connect the corresponding cable 10 to the plug-in box 7. The hanging ear 101 is a 40mm×40mm square. In order to better and firmly combine the busbar 8 with the metal connecting piece 1, a mounting hole with a diameter of 20mm is drilled in the middle of the end of the busbar 8. The metal connecting piece 1 is made of copper-aluminum composite plate as an accessory and formed by stamping. During installation, first grind off the upper edge of the inner side of the insulating partition 2 to facilitate the left and right metal connecting plates 1 to fit flush with the busbar 8. The left and right metal connecting plates 1 separated by the insulating partition 2 inside the busbar duct connector clamp each busbar 8 tightly, and then use the locking bolt 3 with a diameter of 10 mm with the bolt insulating sleeve 4 to pass through the mounting hole on the left connector end plate 12, and then pass through the mounting holes on the stacked insulating partition 2, the mounting holes on the metal connecting plate 1, the mounting holes on the busbar 8, and the mounting holes on the right connector end plate 12 in turn to tighten.

[0034] Combination Figure 5 ,refer to Figure 1 , Figure 8 The emergency repair and installation operation steps of this embodiment are as follows: 1. Hang the plug-in box 7 without plug-in components: Install the expansion bolts with a diameter of 10mm on the wall of the fault bus duct area, hang the plug-in box 7, and install the 150A molded case circuit breaker 701 as usual. The cable 10 for the plug-in box 7 is 35mm. 2 Four-core cable, each core is pressed with DTM35 copper terminal blocks with a screw hole diameter of 10.5mm at both ends to facilitate wiring. The outlet of the circuit breaker 701 is connected to the DTM35 copper terminal block at one end of the four-core cable 10 with a 10mm bolt, and then the DTM35 copper terminal block at the other end of the four-core cable 10 is connected to the incoming line end of the 150A floor main switch 601 in the meter box 6 with a 10mm bolt. The outlet of the main switch 601 is then connected to the household meter 602 with a cable 10; 2. Prefabricated metal connecting piece 1: Made of 4mm thick copper-aluminum composite plate, the left and right metal connecting pieces 1 are punched into a flat plate shape by a punching machine (see Figure 6), the specific parameters are: the punched bolt mounting hole has a hole shape of 30mm×20mm, a waist-shaped hole with a fillet radius of 10mm, and the center of the mounting hole is 30mm away from the bottom edge; the metal connecting piece 1 is 175mm widest in the direction perpendicular to the busbar 8, including the hanging ear 101, and the length in the direction parallel to the busbar 8 is 120mm; in this way, when the metal connecting piece 1 is attached to the insulating partition 2, the width exposed to the insulating partition 2 is 100mm, and the width hidden in the insulating partition 2 is 75mm. The hanging ear 101 punched out of the metal connecting piece 1 is a 40mm×40mm square, and the corresponding wiring holes on the two sides are 16.5mm in diameter, and the corresponding wiring hole in the middle is 10.5mm in diameter. M16 and M10 bolts are used to connect the cable 10. During production, the positions of the wiring holes on each group of metal connecting pieces 1 are staggered to facilitate wiring; 3. Install the improved bus duct connector: first remove the faulty bus duct body 11 and the connectors at both ends, insert one side of the two improved bus duct connectors into the ends of the intact upper bus duct body 5 and the lower bus duct body 9, respectively, and clamp each bus 8 with two metal connecting plates 1 separated by an insulating partition 2 inside the bus duct connector, and fit tightly, and then use the locking bolts 3 with a diameter of 10 mm with the bolt insulation sleeve 4 to pass through the mounting holes on the two connector end plates 12, the mounting holes on the stacked insulating partition 2, the mounting holes on the metal connecting plates 1, and the mounting holes on the bus 8 to tighten; 4. Circuit connection: Open the faulty bus duct body 11, and the upper bus duct body 5 and the lower bus duct body 9 use 240mm 2 Single-core cable 10 connection, each single-core cable has a DTM240 copper terminal block with a screw hole diameter of 16.5mm (see GB / T14315-2008 standard size for details). Use M16 bolts to tighten the 240mm 2 The DTM240 copper terminal blocks on the single-core cable 10 are connected one by one to the 16.5mm diameter wiring holes of the metal connecting piece 1 on the upper and lower bus duct connectors to conduct the busbars. When installing, it is best to clamp the mounting holes of the left and right metal connecting pieces 1 on each bus 8 to the nose of the DTM240 copper terminal blocks to enhance the connection fit. The bus duct housing is grounded. At the same time, use M10 bolts to connect the DTM35 copper terminal blocks together from another 10.5mm diameter wiring hole on the metal connecting piece 1 on the upper bus duct connector or the lower bus duct connector. The 35mm on the DTM35 copper terminal blocks 2 The cable 10 is led out to the plug box 7 without plug-in components on the wall of the faulty bus duct area, and further connected to the incoming line terminal of the circuit breaker 701, so that the floor of the faulty bus duct is powered; 5. Assembly and debugging: Check whether the connection of each phase circuit is accurate and standardized, use a multimeter to detect whether the connection is normal, restore the power supply of the unit, then close the circuit breaker 701 switch, check the current and voltage, if normal, supply power to the household meter box 6.

[0035] Example 5: Unit 3 of the 11-story residential building in Building 9 of Baile Village, with 4 households on each floor, needed emergency repairs on site because the bus duct on the 5th floor burned out. It was found that the power supply of the unit was a three-phase four-wire air plug-in bus duct, the bus duct shell was grounded, the rated voltage was 380V, the frequency was 50Hz, and the rated current was 630A. The overall dimensions of the bus duct are as follows: width 175mm, height 130mm; the four busbars 8 are made of aluminum plates with a width of 60mm and a thickness of 6mm; the connector end plate 12 is 160mm long, 90mm wide, and 5mm thick. The diameter of the two mounting holes in the middle is 20mm, and the distances from the center points of the two mounting holes to the edges are equal, with a center distance of 60mm; the insulating partition 2 is 140mm long, 90mm wide, and 10mm thick. The diameter of the two mounting holes in the middle is 20mm, and the distances from the center points of the two mounting holes to the edges are equal, with a center distance of 60mm; the length of the original aluminum conductive connecting piece is 120mm, 60mm wide, and 3mm thick. The diameter of the two mounting holes in the middle is 30mm, and the distances from the center points of the two mounting holes to the edges are equal, with a center distance of 60mm. Plug-in box 7 dimensions: height 500mm, width 250mm, side thickness 150mm; circuit breaker rated current 100A; meter box 6 dimensions: height 780mm, width 648mm, side thickness 155mm; floor main switch rated current 100A. Figure 1 As shown, the improved bus duct connector of this embodiment uses a connector end plate 12, an insulating partition 2, a locking bolt 3, and a bolt insulating sleeve 4, and the original specifications and dimensions are maintained unchanged. The left and right two pieces of a group of aluminum metal connecting pieces 1 are flat (see Figure 6 ), replace the original aluminum conductive connecting piece hidden in the insulating partition 2, the position and center distance of the two bolt connection mounting holes remain unchanged, the metal connecting piece 1 is 60mm wide, 3mm thick, the hole type is 30mm×20mm, the rounded corner radius is 10mm, the center distance between the two mounting holes is 60mm, and the center distance of the mounting hole is 30mm from the bottom edge. The width of the metal connecting piece 1 in the direction perpendicular to the busbar 8 (including the hanging ear 101) is 60mm higher than the width of the insulating partition 2, that is, the widest width of the metal connecting piece 1 is 135mm (calculation method: 30mm from the bottom edge to the center of the mounting hole of the metal connecting piece 1 + 90mm / 2 width of the insulating partition 2 + 60mm width of the exposed insulating partition 2), leaving space for the wiring hole. The length of the metal connecting piece 1 in the direction parallel to the busbar 8 is 120mm. Three circular wiring holes are correspondingly opened on the hanging ears 101 set on the part of the left and right metal connecting pieces 1 that exceeds the width of the insulating partition 2 by 60mm (see details) Figure 6), the diameter of the circular wiring holes on both sides is the same, with a diameter of 16.5mm, which is convenient for thick cable connection and meets the power supply requirements after the conductive busbar 8 in the bus duct is connected with the cable 10. The diameter of the middle circular wiring hole is 8.4mm, which is used to connect the corresponding cable 10 to the plug-in box 7. The hanging ear 101 is a 60mm×40mm rectangle. In order to better and firmly combine the busbar 8 with the metal connecting piece 1, a mounting hole with a diameter of 20mm is drilled in the middle of the end of the busbar 8. The metal connecting piece 1 is made of copper-aluminum composite plate as an accessory and formed by stamping. During installation, first grind off the upper edge of the inner side of the insulating partition 2 to facilitate the left and right metal connecting plates 1 to fit flush with the busbar 8. The left and right metal connecting plates 1 separated by the insulating partition 2 inside the busbar duct connector clamp each busbar 8 tightly, and then use the locking bolt 3 with a diameter of 10 mm with the bolt insulating sleeve 4 to pass through the mounting hole on the left connector end plate 12, and then pass through the mounting holes on the stacked insulating partition 2, the mounting holes on the metal connecting plate 1, the mounting holes on the busbar 8, and the mounting holes on the right connector end plate 12 in turn to tighten.

[0036] Combination Figure 5 ,refer to Figure 1 , Figure 8 The emergency repair and installation operation steps of this embodiment are as follows: 1. Hang the plug-in box 7 without plug-in components: Install the expansion bolts with a diameter of 8mm on the wall of the fault bus duct area, hang the plug-in box 7, and install the 100A molded case circuit breaker 701 as usual. The cable 10 for the plug-in box 7 is 25mm. 2 Four-core cable, each core is pressed with DTM25 copper terminal blocks with a screw hole diameter of 8.4mm (see GB / T14315-2008 standard size for details) at both ends to facilitate wiring. The outlet of circuit breaker 701 is connected to the DTM25 copper terminal block at one end of the four-core cable 10 with an 8mm bolt, and then the DTM25 copper terminal block at the other end of the four-core cable 10 is connected to the incoming line end of the 100A floor main switch 601 in the meter box 6 with an 8mm bolt. The outlet of the main switch 601 is then connected to the household meter 602 with cable 10; 2. Prefabricated metal connecting piece 1: Made of 3mm thick aluminum plate, the left and right metal connecting pieces 1 are punched into a flat plate shape by a punching machine (see Figure 6), the specific parameters are: the punched bolt mounting hole has a hole shape of 30mm×20mm, a waist-shaped hole with a fillet radius of 10mm, and the center of the mounting hole is 30mm away from the bottom edge; the widest part of the metal connecting piece 1 including the hanging ear 101 in the vertical direction to the busbar 8 is 135mm, and the length in the direction parallel to the busbar 8 is 120mm; in this way, when the metal connecting piece 1 is attached to the insulating partition 2, the width exposed to the insulating partition 2 is 60mm, and the width hidden in the insulating partition 2 is 75mm. The hanging ear 101 punched out of the metal connecting piece 1 is a rectangle of 60mm×40mm, and the corresponding wiring holes on the two sides are 16.5mm in diameter, and the corresponding wiring hole in the middle is 8.4mm in diameter. M16 and M8 bolts are used to connect the cable 10. During production, the positions of the wiring holes on each group of metal connecting pieces 1 are staggered to facilitate wiring; 3. Install the improved bus duct connector: first remove the faulty bus duct body 11 and the connectors at both ends, insert one side of the two improved bus duct connectors into the ends of the intact upper bus duct body 5 and the lower bus duct body 9, respectively, and clamp each bus 8 with two metal connecting plates 1 separated by an insulating partition 2 inside the bus duct connector, and fit tightly, and then use the locking bolts 3 with a diameter of 10 mm with the bolt insulation sleeve 4 to pass through the mounting holes on the two connector end plates 12, the mounting holes on the stacked insulating partition 2, the mounting holes on the metal connecting plates 1, and the mounting holes on the bus 8 to tighten; 4. Circuit connection: Trip the faulty bus duct body 11, and use 185mm for the upper bus duct body 5 and the lower bus duct body 9. 2 Single-core cable 10 connection, each single-core cable has a DTM185 copper terminal block with a screw hole diameter of 16.5mm (see GB / T14315-2008 standard size for details). Use M16 bolts to tighten the 185mm 2 The DTM185 copper terminal blocks on the single-core cable 10 are connected one by one to the 16.5mm diameter wiring holes of the metal connecting piece 1 on the upper and lower bus duct connectors to conduct the busbars. When installing, it is best to clamp the mounting holes of the left and right metal connecting pieces 1 on each bus 8 to the nose of the DTM185 copper terminal blocks to enhance the connection fit. The bus duct shell is grounded. At the same time, use M8 bolts to connect the DTM25 copper terminal blocks from another 8.4mm diameter wiring hole on the metal connecting piece 1 on the upper bus duct connector or the lower bus duct connector. The 25mm diameter on the DTM25 copper terminal blocks 2 The cable 10 is led out to the plug box 7 without plug-in components on the wall of the faulty bus duct area, and further connected to the incoming line terminal of the circuit breaker 701, so that the floor of the faulty bus duct is powered; 5. Assembly and debugging: Check whether the connection of each phase circuit is accurate and standardized, use a multimeter to detect whether the connection is normal, restore the power supply of the unit, then close the circuit breaker 701 switch, check the current and voltage, if normal, supply power to the household meter box 6.

[0037] Example 6: Unit 2 of the 9-story residential building 3 in Gaoneng Community, with 2 households on each floor, needed emergency repairs on site because the bus duct on the 8th floor burned out. It was found that the power supply of the unit was a three-phase four-wire air plug-in bus duct, the bus duct shell was grounded, the rated voltage was 380V, the frequency was 50Hz, and the rated current was 400A. The overall dimensions of the bus duct are as follows: width 175mm, height 110mm; the four busbars 8 are made of aluminum plates with a width of 40mm and a thickness of 6mm; the connector end plate 12 is 160mm long, 70mm wide, and 5mm thick. The diameter of the two mounting holes in the middle is 20mm, and the distances from the center points of the two mounting holes to the edges are equal, with a center distance of 60mm; the insulating partition 2 is 140mm long, 70mm wide, and 10mm thick. The diameter of the two mounting holes in the middle is 20mm, and the distances from the center points of the two mounting holes to the edges are equal, with a center distance of 60mm; the length of the original aluminum conductive connecting piece is 120mm, 40mm wide, and 3mm thick. The diameter of the two mounting holes in the middle is 30mm, and the distances from the center points of the two mounting holes to the edges are equal, with a center distance of 60mm. Plug-in box 7 dimensions: height 500mm, width 250mm, side thickness 150mm; circuit breaker rated current 100A; meter box 6 dimensions: height 640mm, width 535mm, side thickness 140mm; floor main switch rated current 100A. Figure 1 As shown, the improved bus duct connector of this embodiment uses a connector end plate 12, an insulating partition 2, a locking bolt 3, and a bolt insulating sleeve 4, and the original specifications and dimensions are maintained unchanged. The left and right two pieces of a group of aluminum metal connecting pieces 1 are flat (see Figure 6 ), replaces the original aluminum conductive connecting plate hidden in the insulating partition 2, the position and center distance of the two bolt connection mounting holes remain unchanged, the metal connecting plate 1 is 40mm wide, 3mm thick, the hole type is 30mm×20mm, the waist-shaped hole with a fillet radius of 10mm, the center distance between the two mounting holes is 60mm, and the center of the mounting hole is 20mm away from the bottom edge. Figure 6There are three ears 101 set on the parts of the two metal connecting pieces 1 on the left and right sides that exceed the width of the insulating partition 2. The ears 101 on both sides are 25mm×25mm squares, and correspondingly have circular wiring holes with a diameter of 14.5mm, which are convenient for thick cable connection and meet the power supply requirements after the conductive bus 8 in the bus duct is connected with the cable 10. The middle ear 101 is 12mm×12mm square, and correspondingly has a circular wiring hole with a diameter of 8.4mm, which is used to connect the corresponding cable 10 to the plug-in box 7. The length of the metal connecting piece 1 in the direction parallel to the bus 8 is 120mm. In order to better and firmly combine the bus 8 with the metal connecting piece 1, a mounting hole with a diameter of 20mm is drilled in the middle of the end of the bus 8. The metal connecting piece 1 is made of aluminum plate as an accessory and formed by stamping. During installation, first grind off the upper edge of the inner side of the insulating partition 2 to facilitate the left and right metal connecting plates 1 to fit flush with the busbar 8. The left and right metal connecting plates 1 separated by the insulating partition 2 inside the busbar duct connector clamp each busbar 8 tightly, and then use the locking bolt 3 with a diameter of 10 mm with the bolt insulating sleeve 4 to pass through the mounting hole on the left connector end plate 12, and then pass through the mounting holes on the stacked insulating partition 2, the mounting holes on the metal connecting plate 1, the mounting holes on the busbar 8, and the mounting holes on the right connector end plate 12 in turn to tighten.

[0038] Combination Figure 5 ,refer to Figure 1 , Figure 8 The emergency repair and installation operation steps of this embodiment are as follows: 1. Hang the plug-in box 7 without plug-in components: Install the expansion bolts with a diameter of 8mm on the wall of the fault bus duct area, hang the plug-in box 7, and install the 100A molded case circuit breaker 701 as usual. The cable 10 for the plug-in box 7 is 25mm. 2 Four-core cable, each core is pressed with DTM25 copper terminal blocks with a screw hole diameter of 8.4mm (see GB / T14315-2008 standard size for details) at both ends to facilitate wiring. The outlet of circuit breaker 701 is connected to the DTM25 copper terminal block at one end of the four-core cable 10 with an 8mm bolt, and then the DTM25 copper terminal block at the other end of the four-core cable 10 is connected to the incoming line end of the 100A floor main switch 601 in the meter box 6 with an 8mm bolt. The outlet of the main switch 601 is then connected to the household meter 602 with cable 10; 2. Prefabricated metal connecting piece 1: Made of 3mm thick aluminum plate, the left and right metal connecting pieces 1 are punched or laser cut into flat plate shapes (see Figure 6), the specific parameters are: the hole shape of the bolt mounting hole is 30mm×20mm, a waist-shaped hole with a fillet radius of 10mm, and the center of the mounting hole is 20mm away from the bottom edge; the two side hanging ears 101 are 25mm×25mm squares, with corresponding circular wiring holes with a diameter of 14.5mm on them, and the middle hanging ear 101 is 12mm×12mm squares, with corresponding circular wiring holes with a diameter of 8.4mm on them; the length of the metal connecting piece 1 in the direction parallel to the busbar 8 is 120mm. M14 and M8 bolts are used to connect the cable 10. During production, the positions of the wiring holes on each group of metal connecting pieces 1 are staggered to facilitate wiring; 3. Install the improved bus duct connector: first remove the faulty bus duct body 11 and the connectors at both ends, insert one side of the two improved bus duct connectors into the ends of the intact upper bus duct body 5 and the lower bus duct body 9, respectively, and clamp each bus 8 with two metal connecting plates 1 separated by an insulating partition 2 inside the bus duct connector, and fit tightly, and then use the locking bolts 3 with a diameter of 10 mm with the bolt insulation sleeve 4 to pass through the mounting holes on the two connector end plates 12, the mounting holes on the stacked insulating partition 2, the mounting holes on the metal connecting plates 1, and the mounting holes on the bus 8 to tighten; 4. Circuit connection: Open the faulty bus duct body 11, and use 150mm for the upper bus duct body 5 and the lower bus duct body 9. 2 Single-core cable 10 connection, each single-core cable has a DTM150 copper terminal block with a screw hole diameter of 14.5mm (see GB / T14315-2008 standard size for details). Use M14 bolts to tighten the 150mm 2 The DTM150 copper terminal blocks on the single-core cable 10 are connected one by one to the 14.5mm diameter wiring holes of the metal connecting piece 1 on the upper and lower bus duct connectors to conduct the busbars. When installing, it is best to clamp the mounting holes of the left and right metal connecting pieces 1 on each bus 8 to the nose of the DTM150 copper terminal blocks to enhance the connection fit. The bus duct shell is grounded. At the same time, use M8 bolts to connect the DTM25 copper terminal blocks from another 8.4mm diameter wiring hole on the metal connecting piece 1 on the upper bus duct connector or the lower bus duct connector. The 25mm diameter on the DTM25 copper terminal blocks 2 The cable 10 is led out to the plug box 7 without plug-in components on the wall of the faulty bus duct area, and further connected to the incoming line terminal of the circuit breaker 701, so that the floor of the faulty bus duct is powered; 5. Assembly and debugging: Check whether the connection of each phase circuit is accurate and standardized, use a multimeter to detect whether the connection is normal, restore the power supply of the unit, then close the circuit breaker 701 switch, check the current and voltage, if normal, supply power to the household meter box 6.

[0039] According to the technical solution of the present invention, an improved bus duct connector and a circuit connection method are used, which can quickly skip the fault of the bus duct main body 11 and the copper clip connector. The wiring does not need to open the bus duct cover, but can be directly carried out on the bus duct connector. The construction is convenient, the handling is simple, the power supply can be restored quickly, and the speed of power emergency repair is improved. The power supply restoration time is shortened from more than 4 hours to within 1.5 hours, and the power load is not reduced after power is turned on, ensuring the long-term stable operation of the power supply.

[0040] Since the punching machine and the laser cutting machine are already well known and used, their specific structures and working principles will not be described in detail here.

Claims

1. A busbar connector for rapid power restoration, comprising a connector end plate, an insulating partition, a metal connecting piece, a locking bolt, and a bolt insulating sleeve, wherein the metal connecting piece is placed between the insulating partitions, and two connector end plates clamp the stacked insulating partitions and are connected together by 1 to 2 locking bolts set on the bolt insulating sleeve, characterized in that: The width direction of the metal connecting sheet is 12 mm to 150 mm higher than the width of the insulating partition, and at least one wiring hole is provided in the portion exceeding the width of the insulating partition, and the hole diameter of the wiring hole is 8.4 mm to 21 mm.

2. A bus duct connector for rapid power restoration according to claim 1, characterized in that: The wiring hole of the metal connecting piece is circular or square.

3. A bus duct connector for rapid power restoration according to claim 1, characterized in that: The metal connecting sheet is in a bent shape, and the upper part after bending is parallel to the lower part.

4. A bus duct connector for rapid power restoration according to claims 1 and 3, characterized in that: The portion of the metal connecting piece that exceeds the width of the insulating partition is provided with a hanging ear, and the hanging ear has a wiring hole.

5. A bus duct connector for rapid power restoration according to claims 1 and 3, characterized in that: The portion of the metal connecting piece that exceeds the width of the insulating partition is provided with a cylinder, and the cylinder is horizontally connected to the metal connecting piece.

6. A method for electrical connection of a bus duct connector for rapid power recovery, comprising the following steps: S1: Hanging a plug-in box without connectors: Hang a plug-in box on the wall of the faulty bus duct area, with a molded case circuit breaker of the corresponding current size installed inside. The outgoing line of the circuit breaker is connected to the incoming line of the floor main switch in the meter box with a cable, and the outgoing line of the main switch is connected to the household meter with a cable; S2: Prefabricated metal connecting piece: Made of conductive plate, formed by stamping or cutting and welding. The width of the metal connecting piece is 12mm~150mm higher than the width of the insulating partition. At least one wiring hole is provided in the part exceeding the width of the insulating partition. The hole diameter of the wiring hole is 8.4mm~21mm. S3: Install the improved bus duct connector: first remove the faulty bus duct body and the connectors at both ends, insert one side of the two improved bus duct connectors into the ends of the intact upper bus duct body and the lower bus duct body respectively, and clamp each busbar with two metal connecting plates separated by insulating partitions inside the bus duct connector, and fit tightly, and then use 1~2 locking bolts of the bolt insulation sleeve to pass through the mounting holes on the connector end plate, the mounting holes on the stacked insulating partitions, and the mounting holes on the metal connecting plates to tighten; S4: Circuit connection: Use cables to connect the wiring holes of the metal connecting pieces on the upper and lower bus duct connectors one by one to conduct the busbars. At the same time, use cables to lead out from the wiring holes on the metal connecting pieces on the upper bus duct connector or the lower bus duct connector to the plug-in box without connectors on the wall of the faulty bus duct area, and further connect to the incoming line terminal of the circuit breaker, and the power supply to the faulty bus duct floor will be restored.

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