Structure for quickly connecting conductive shunting sheet with bus in bus duct

Abstract

The utility model discloses a structure for quickly connecting a conductive shunting sheet with a bus in a bus duct, which comprises the conductive shunting sheet, a metal connecting sheet, the bus and a bolt, the upper part of the conductive shunting sheet is provided with a wiring hole, the middle parts of the conductive shunting sheet and the metal connecting sheet close to the edge of the bus are provided with bolt upper holes, and the lower parts are provided with bolt lower holes. The conductive shunting sheets and the metal connecting sheets clamp the bus in pairs and are fixed together through bolts. According to the utility model, the problem of on-line rapid replacement of the conductive shunting sheet of the connector which is easy to break down on site and is represented by a copper clip form is easily solved. The safe and stable bolt connection between the conductive shunting sheet and the bus is realized with high quality, the electrical load is not reduced after electrification, the power failure is greatly reduced, and the long-term stable operation of a power supply system is ensured. The device is simple in structure and convenient to construct, power supply can be recovered quickly, and the power line repair speed is increased.

Description

Technical Field

[0001] This utility model relates to a conductive shunt plate connection structure for power supply lines, belonging to the field of power equipment device technology, and particularly to a structure for quick connection of conductive shunt plates to busbars in busbar slots. Background Technology

[0002] Existing high-rise buildings are designed with electrical shafts for conducting electrical energy. Within these shafts, pre-drilled openings between floors allow busbars or cables to pass through, connecting from bottom to top. A busbar system consists of fixed supports, a protective casing, busbars, connectors, plug-in fittings, plug-in boxes, socket insulating sleeves, shunt circuit breakers, and related accessories. The busbar casing is a rectangular, enclosed metal shell. The busbar cover has lead-out holes that hold the socket insulating sleeves. Inside, copper or aluminum busbars are installed, forming the main body of the busbar. Installation of the busbar main body involves using expansion bolts to connect the fixed supports to the electrical shaft walls and cast-in-place slabs on each floor, according to the electrical wiring requirements. Bolts are then used to connect the busbar casing to the fixed supports. Conductive busbars are installed inside the busbar casing using a three-phase four-wire or three-phase five-wire system, forming the busbars. Locking bolts are then used to secure the busbars through pre-drilled holes on the side of the casing. Connector: Also called a piercing clamp or plug, it resembles a copper clip with an external plastic insulating shell, fixed to the connector box. The head of the copper clip passes through the lead-out hole and clamps onto the busbar inside the busbar trunking. The copper piece at the tail end connects to the cable, which then connects to the incoming terminal of the circuit breaker. The electrical equipment connects to the outgoing terminal of the circuit breaker, forming the power supply line for each unit. Connector box: One of the accessories of the busbar trunking, fixed to the outer shell of the busbar trunking. It has lead-out holes on the back, which communicate with the lead-out holes on the busbar trunking cover plate. It mainly extends and expands the branch lines of the busbar trunking. It is equipped with a molded case circuit breaker of appropriate current capacity, which can distribute the current of the busbar trunking to the electrical equipment of each household through the unit main switch and the incoming meter box. The busbars in the busbar trunking of each floor lead out branch lines to supply power to each unit floor. Currently, busbar trunking is suitable for AC power supplies with a rated voltage below 660V and a frequency of 50Hz, and for three-phase four-wire or three-phase five-wire power distribution systems with a rated current of 250A~1000A. Similar products to busbar trunking are widely used in indoor low-voltage power transmission trunk line projects, enabling efficient transmission and distribution of electrical energy. Busbar trunking can be classified into three types according to its insulation method: air-insulated plug-in busbar trunking, compact insulated plug-in busbar trunking, and high-strength plug-in busbar trunking. The branch lines leading from the busbar use copper clips for vertical plug-in connections. After energization, the contact points are prone to overheating, arc erosion, and oxidation, leading to poor contact, poor conductivity, and even connection failure, potentially damaging household appliances. Therefore, the copper clip-type plug-in components used for branch lines have a short service life and cause damage to the busbar (which needs to be ground down before reuse). Disassembly and replacement are labor-intensive and time-consuming, affecting the rapid restoration and operation of power supply. Given the aforementioned shortcomings, using conductive shunt plates instead of copper clip connectors for busbars is undoubtedly the best choice. Connecting the conductive shunt plates to the busbars is easily done in the factory; the shunt plates can be directly bolted to the busbars or welded together. This factory-connected structure is only suitable for power supply system installations in newly constructed buildings.However, for various busbar trunking systems already in use, directly connecting the conductive shunt plates to the busbars with bolts results in a minimum phase-to-phase distance of 12mm and a maximum of 50mm. This narrow space makes vertical drilling with an electric drill nearly impossible, while angled drilling is extremely difficult due to slippage. Patent number 2023218916801 discloses an "auxiliary tool for online drilling of busbars in busbar trunking," which shows that specialized tools are needed to solve the problem of angled drilling. This method is time-consuming and cannot quickly connect the conductive shunt plates to the busbars. Another method, welding, connects the conductive shunt plates to the busbars online. However, welding is performed in narrow electrical shafts, which contain numerous flammable and explosive electrical cables, making this method impractical. Furthermore, manual welding is very difficult, and defects such as porosity, inclusions, and slag at the weld inevitably affect current flow. Since busbar trunking is custom-made, with products manufactured by individual companies and transported to the construction site in sections for bolted connection, their models and specifications are not uniform, with significant differences between some products. Therefore, this study investigates a structure for quickly connecting the conductive shunt plate to the busbar in the busbar trough, which can quickly handle faults and restore power supply, thereby improving the reliability of power supply to residents. This has become one of the key issues that power companies urgently need to address in the power supply system of high-rise buildings. Summary of the Invention

[0003] To address the aforementioned technical problems, the purpose of this utility model is to provide a structure for quickly connecting conductive shunt plates to busbars in busbar slots, thereby efficiently and quickly completing the connection between the conductive shunt plates and busbars, significantly reducing power failures, and ensuring the long-term stable operation of the power supply system.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a structure for quick connection of a conductive shunt plate to a busbar in a busbar groove, comprising a conductive shunt plate, a metal connecting plate, a busbar, and bolts. The conductive shunt plate has a wiring hole on its upper part. The conductive shunt plate and the metal connecting plate are provided with upper bolt holes in the middle part close to the edge of the busbar and lower bolt holes in the lower part. The conductive shunt plate and the metal connecting plate clamp the busbar in pairs and are fixed together with bolts.

[0005] Preferably, the conductive shunt sheet is bent, with the upper and lower parts parallel after bending.

[0006] Preferably, the upper bolt hole in the middle of the conductive shunt plate is an oblong hole, and the lower bolt hole is a square hole.

[0007] Preferably, the wiring hole on the upper part of the conductive shunt plate is a square hole.

[0008] Preferably, the bolt is a semi-circular head square neck bolt.

[0009] Preferably, the bolt is an L-shaped hook bolt.

[0010] In use, the conductive shunt plate and the metal connecting plate are grouped together and clamped in pairs to hold each phase busbar. Bolts are then passed through the upper bolt hole and the lower bolt hole, which are located in the middle of the busbar and close to its edge, and tightened.

[0011] Compared with existing technologies, the advantages of this invention are as follows: By designing a conductive shunt plate and metal connecting plate with bolt mounting holes in the middle and lower parts close to the edge of the busbar, this invention solves the problem of rapid online replacement of conductive shunt plates using existing connectors, such as those in the form of copper clips, which are prone to failure. This invention has a simple structure, is easy to manufacture and install, improves the speed of power emergency repairs, significantly reduces power failures, and ensures long-term stable operation of the power supply. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 yes Figure 1 Schematic diagram of the medium-conductivity shunt plate structure.

[0014] Figure 3 yes Figure 1 Schematic diagram of the metal connecting piece structure.

[0015] Figure 4 yes Figure 1 A schematic diagram of the installation of this utility model inside the busbar trunking housing.

[0016] Figure 5 This is a schematic diagram of the bolted connection between the bent conductive shunt plate and the metal connecting plate of this utility model.

[0017] Figure 6 middle Figure 5 Schematic diagram of the medium-conductivity shunt plate structure.

[0018] Figure 7 yes Figure 5 Schematic diagram of the metal connecting piece structure.

[0019] Figure 8 yes Figure 5 A schematic diagram of the installation of this utility model inside the busbar trunking housing.

[0020] Figure 9 This is a schematic diagram of the electrical connection of this utility model.

[0021] In the diagram: 1. Conductive shunt plate, 101. Bolt upper hole, 102. Bolt lower hole, 103. Wiring hole, 2. Metal connecting plate, 201. Bolt upper hole, 202. Bolt lower hole, 203. Wiring hole, 3. Busbar, 4. Bolt, 5. Busbar trunking housing, 6. Plug-in box, 7. Circuit breaker, 8. Meter box, 9. Main floor switch, 10. Meter, 11. Cable. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments. See also: Figures 1-9 A structure for quick connection of a conductive shunt plate to a busbar in a busbar groove is disclosed, comprising a conductive shunt plate 1, a metal connecting plate 2, a busbar 3, and bolts 4. The conductive shunt plate 1 has a wiring hole 103 on its upper part. The conductive shunt plate 1 and the metal connecting plate 2 have upper bolt holes 101 (201) in the middle of their positions close to the edge of the busbar 3, and lower bolt holes 102 (202) in their lower parts. The conductive shunt plate 1 and the metal connecting plate 2 are paired and clamped together with the busbar 3, and fixed together with bolts 4. The conductive shunt plate 1 is bent, with the upper and lower parts parallel after bending. The upper bolt hole 101 in the middle of the conductive shunt plate 1 is an oblong hole, and the lower bolt hole 102 is a square hole. The wiring hole 103 on the upper part of the conductive shunt plate 1 is a square hole. The bolts 4 are semi-circular head square neck bolts. The bolts 4 are L-shaped hook head bolts.

[0023] like Figures 1-8 As shown, the conductive shunt plate 1 is made of conductive plate according to the specifications and dimensions of the busbar trunking, and the metal connecting plate 2 is made of metal material, preferably the same material as the busbar 3. In the event of a power outage in a faulty unit, first check the material of the busbar 3 in that unit's busbar trunking—whether it is made of copper or aluminum plate. The conductive shunt plate 1 should be made of the same corresponding material. For aluminum plate busbar 3, the conductive shunt plate can also be preferably made of copper-aluminum composite plate. During installation, the aluminum side of the conductive shunt plate 1 is attached to the aluminum busbar 3, and the copper side is attached to the copper cable 11. This achieves an aluminum-copper transition, ensuring stable power supply. The conductive shunt plate 1 and the metal connecting plate 2 can also be of equal length and bent by stamping, with the upper and lower parts parallel after bending (see details). Figure 5 The conductive shunt plate 1 has a wiring hole 103 on its upper part. The wiring hole 103 is a circular hole with a diameter of 8.4mm to 10.5mm, or a square hole with a side length of 8.4mm to 10.5mm (see details). Figure 2 , Figure 6The purpose of designing the square wiring hole 103 is to facilitate the use of a semi-circular head square neck bolt 4 to be fastened onto the square wiring hole 103. Simply tighten the nut at the other end to easily tighten it, making cable 11 connection convenient. The conductive shunt plate 1 and the metal connecting plate 2 have bolt holes 101 (201) in the middle of their edges close to the busbar 3. The diameter of the circular hole is 4.5mm~10.5mm. Ideally, the bolt holes 101 (201) should be punched with a length of 20mm~40mm, a width of 5.0mm~11.0mm, and a corner radius of 2.5mm~5.5mm, forming an oblong shape. The oblong design of the bolt holes 101 (201) facilitates quick and precise adjustment of the bolt 4 during installation, saving repair time. The conductive shunt plate 1 and the metal connecting plate 2 have bolt holes 102 (202) at their lower parts close to the edge of the busbar 3. The diameter of the circular holes is 4.5mm to 10.5mm. It is preferable to design the bolt holes 102 of the conductive shunt plate 1 as square holes to facilitate the installation of semi-circular head square neck bolts 4. If the side length of the square hole 102 of the conductive shunt plate 1 is 6.4mm to 10.5mm, then the diameter of the corresponding circular hole 202 of the bolt holes 202 of the metal connecting plate 2 is also 6.4mm to 10.5mm. The purpose of placing the two bolt holes on the conductive shunt plate 1 and the metal connecting plate 2 close to the edge of the busbar 3 is to ensure that after the bolts 4 are installed, the bolt heads, nuts, and washers can press against the busbar 3, ensuring a tight fit between the conductive shunt plate 1, the metal connecting plate 2, and the busbar 3, without reducing the electrical load. If the two bolt mounting holes on the conductive shunt plate 1 and the metal connecting plate 2 are located far from the edge of the busbar 3, the contact surface between the conductive shunt plate 1 / 2 and the busbar 3 will arch after tightening the nuts, significantly reducing the current-carrying area and lowering the electrical load. When the conductive shunt plate 1 and the metal connecting plate 2 are installed together, the busbar 3 is clamped and fixed with bolts 4. To ensure a tighter fit between the conductive shunt plate 1 / 2 and the busbar 3, L-shaped hook bolts are preferred for the bolts 4. In use, the L-shaped hook bolt passes through the right metal connecting plate 2 and the left conductive shunt plate 1 in sequence, with the L-shaped hook facing the busbar 3, and the other end of the nut is tightened.

[0024] Example 1: Unit 1 of a 32-story office building in a financial complex. Each floor has 21 units with a high electrical load. Due to a power outage on the 5th floor, emergency repairs are required. The unit uses a three-phase four-wire high-strength plug-in busbar system. The busbar casing 5 is grounded, with a rated voltage of 380V, a frequency of 50Hz AC power, and a rated current of 1600A. The busbar dimensions are: width 255mm, height 270mm; the four busbars 3 are made of copper plate, 120mm wide and 10mm thick; the plug-in box 6 has dimensions of 500mm high, 250mm wide, and 150mm thick on the sides; the circuit breaker 7 has a rated current of 250A; the meter box 8 has dimensions of 1040mm high, 1546mm wide, and 155mm thick on the sides; and the main floor switch 9 has a rated current of 250A. Inspection revealed that the copper clamp plug-in components on this floor were burnt out and needed replacement. Figure 5 , Figure 8 , Figure 9 The emergency repair and installation operation steps in this embodiment are as follows:

[0025] 1. Select conductive connecting piece 1 and metal connecting piece 2 according to the specifications and model of the busbar trunking: The prefabricated conductive connecting piece 1 and metal connecting piece 2 are made of copper plate with a thickness of 3mm. The conductive connecting piece 1 and metal connecting piece 2 of each busbar 3 are combined in pairs (see details). Figure 5 , Figure 8 Conductive connecting piece 1 and metal connecting piece 2 are stamped into a bent shape using a stamping machine. After bending, conductive connecting piece 1 and metal connecting piece 2 are the same size but bent in opposite directions (see details). Figure 5 The specific parameters of conductive connecting piece 1 and metal connecting piece 2 are: total height 266mm, width 25mm, thickness 3.0mm, and a wiring hole 103 (203) is opened 30mm from the top edge of the upper width center line. The wiring hole 103 of conductive connecting piece 1 is a square hole with a side length of 10.5mm (see details). Figure 6 The metal connecting piece 2 has a circular hole 203 with a diameter of 10.5mm (see details). Figure 7 A bolt hole 101 (201) is located 146mm from the bottom edge along the center line of the middle width. The optimal bolt hole 101 (201) is an oblong hole with a length of 40mm, a width of 11.0mm, and a corner radius of 5.5mm (see details). Figure 6 , Figure 7 ); A bolt hole 102 (202) is opened 20mm from the bottom edge of the lower width center line. The hole diameter is 10.5mm. The bolt hole 102 of the left conductive shunt plate 1 is a square hole with a side length of 10.5mm. The corresponding circular hole 202 of the right metal connecting plate 2 has a diameter of 10.5mm.

[0026] 2. Remove the copper clip connector: First, cut off the power supply to the unit. Then, remove the cable 11 connecting the tail end of the copper clip to the circuit breaker 7 and the cable 11 connecting the output end of the circuit breaker 7 to the main switch 9 on the floor. Next, remove the connector box 6 and the burnt copper clip connector.

[0027] 3. Install conductive shunt plates 1 and metal connecting plates 2 on busbar 3: Assign the left and right conductive shunt plates 1 and metal connecting plates 2 to the lead-out holes of each busbar 3 (see details). Figure 9 Insert the bolts into both sides of the busbar 3 respectively, clamp the busbar 3 in pairs, and make the upper bolt holes 101 (201) and lower bolt holes 102 (202) correspond one-to-one. Use M10 semi-circular head square neck bolts 4 to pass through the upper bolt holes 101 (201) and lower bolt holes 102 (202) respectively to fix them (see details). Figure 5 , Figure 8 );

[0028] 4. Assembly and Circuit Connection: After closing the busbar trunking cover, bring the upper parts of the conductive shunt plate 1 and the metal connecting plate 2 together and pass them through the insulating sleeve of the lead-out hole on the busbar trunking cover and the lead-out hole on the back of the plug box 6. Install the plug box 6 and use M10 semi-circular head square neck bolts 4 to clamp them onto the 10.5mm×10.5mm square wiring hole 103 on the upper part of the conductive shunt plate 1. Tighten the DTM50 copper terminal block (see GB / T14315-2008 standard dimensions) with nuts on the outside of the metal connecting plate 2. The 50mm DTM50 copper terminal block is connected... 2 The cable is connected to the incoming terminal of circuit breaker 7, and the outgoing terminal of circuit breaker 7 is connected to the main floor switch 9 via cable 11 (see details). Figure 9 );

[0029] 5. Organize debugging: Use a multimeter to check that the connection is normal, restore the power supply to the unit, then close the circuit breaker 7, check the current and voltage. If they are normal, supply power to the meter box 8, close the main switch 9 of the floor, and restore power to each meter 10.

[0030] Example 2: Unit 1 of Building 4, a 26-story residential building in Huanshan Community. Each floor of this unit has 12 households with a high electrical load. Due to a power outage on the 10th floor, emergency repairs are required. The unit is powered by a three-phase five-wire air-insulated busbar trunking system with a rated voltage of 380V, a frequency of 50Hz AC, and a rated current of 1250A. The busbar trunking dimensions are: width 275mm, height 230mm; the five busbars 3 are made of copper plate, with four busbars 3 being 100mm wide and 8mm thick, and one grounding busbar 3 being 100mm wide and 4mm thick; the plug-in box 6 has dimensions of 500mm high, 250mm wide, and a side thickness of 150mm; the circuit breaker 7 has a rated current of 200A. The meter box 8 has dimensions of 1040mm high, 1016mm wide, and a side thickness of 155mm; the main floor switch 9 has a rated current of 200A. An investigation revealed that the copper clip connector on that floor was burnt out and needed to be replaced. Figure 5 Reference three-phase four-wire Figure 8 , Figure 9 The emergency repair and installation operation steps in this embodiment are as follows:

[0031] 1. Select conductive connecting piece 1 and metal connecting piece 2 according to the specifications and model of the busbar trunking: The prefabricated conductive connecting piece 1 and metal connecting piece 2 are made of copper plate with a thickness of 2.5mm. The conductive connecting piece 1 and metal connecting piece 2 of each busbar 3 are combined in pairs (see details). Figure 5 , Figure 8 Conductive connecting piece 1 and metal connecting piece 2 are stamped into a bent shape using a stamping machine. After bending, conductive connecting piece 1 and metal connecting piece 2 are the same size but bent in opposite directions (see details). Figure 5 The specific parameters of conductive connecting piece 1 and metal connecting piece 2 are: total height 246mm, width 25mm, thickness 2.5mm, and a wiring hole 103 (203) is opened 30mm from the top edge of the upper width center line. The wiring hole 103 of conductive connecting piece 1 is a square hole with a side length of 10.5mm (see details). Figure 6 The metal connecting piece 2 has a circular hole 203 with a diameter of 10.5mm (see details). Figure 7 A bolt hole 101 (201) is located 126mm from the bottom edge along the center line of the middle width section. Ideally, the bolt hole 101 (201) should be oblong, with a length of 35mm, a width of 11.0mm, and a corner radius of 5.5mm (see details). Figure 6 , Figure 7 ); A bolt hole 102 (202) is opened 20mm from the bottom edge of the lower width center line. The hole diameter is 10.5mm. The bolt hole 102 of the left conductive shunt plate 1 is a square hole with a side length of 10.5mm. The corresponding circular hole 202 of the right metal connecting plate 2 has a diameter of 10.5mm.

[0032] 2. Remove the copper clip connector: First, cut off the power supply to the unit. Then, remove the cable 11 connecting the tail end of the copper clip to the circuit breaker 7 and the cable 11 connecting the output end of the circuit breaker 7 to the main switch 9 on the floor. Next, remove the connector box 6 and the burnt copper clip connector.

[0033] 3. Install conductive shunt plates 1 and metal connecting plates 2 on busbar 3: Assign the left and right conductive shunt plates 1 and metal connecting plates 2 to the lead-out holes of each busbar 3 (see details). Figure 9 Insert the bolts into both sides of the busbar 3 respectively, clamp the busbar 3 in pairs, and make the upper bolt holes 101 (201) and lower bolt holes 102 (202) correspond one-to-one. Use M10 semi-circular head square neck bolts 4 to pass through the upper bolt holes 101 (201) and lower bolt holes 102 (202) respectively to fix them (see details). Figure 5 , Figure 8 );

[0034] 4. Assembly and Circuit Connection: After closing the busbar trunking cover, bring the upper parts of the conductive shunt plate 1 and the metal connecting plate 2 together and pass them through the insulating sleeve of the lead-out hole on the busbar trunking cover and the lead-out hole on the back of the plug box 6. Install the plug box 6 and use M10 semi-circular head square neck bolts 4 to clamp them onto the 10.5mm×10.5mm square wiring hole 103 on the upper part of the conductive shunt plate 1. Tighten the DTM50 copper terminal block (see GB / T14315-2008 standard dimensions) with nuts on the outside of the metal connecting plate 2. The 50mm DTM50 copper terminal block is connected... 2 The cable is connected to the incoming terminal of circuit breaker 7, and the outgoing terminal of circuit breaker 7 is connected to the main floor switch 9 via cable 11 (see details). Figure 9 );

[0035] 5. Organize debugging: Use a multimeter to check that the connection is normal, restore the power supply to the unit, then close the circuit breaker 7, check the current and voltage. If they are normal, supply power to the meter box 8, close the main switch 9 of the floor, and restore power to each meter 10.

[0036] Example 3: Unit 1 of Building 8, a 26-story residential building in the Park One residential complex, has 9 households per floor. A power outage occurred on the 10th floor, requiring emergency repairs. The unit is powered by a three-phase four-wire compact insulated plug-in busbar system. The busbar casing 5 is grounded, with a rated voltage of 380V, a frequency of 50Hz AC power, and a rated current of 1000A. The busbar dimensions are: width 255mm, height 220mm; the four busbars 3 are made of copper plate, 80mm wide and 6mm thick; the plug-in box 6 has dimensions of 500mm height, 250mm width, and 150mm side thickness; the circuit breaker 7 has a rated current of 150A; the meter box 8 has dimensions of 1040mm height, 810mm width, and 155mm side thickness; the main switch 9 has a rated current of 150A. Inspection revealed that the copper clamp plug-in connectors on this floor were burnt out and needed replacement. Figure 5, Figure 8 , Figure 9 The emergency repair and installation operation steps in this embodiment are as follows:

[0037] 1. Select conductive connecting piece 1 and metal connecting piece 2 according to the specifications and model of the busbar trunking: The prefabricated conductive connecting piece 1 and metal connecting piece 2 are made of copper plate with a thickness of 2mm. The conductive connecting piece 1 and metal connecting piece 2 of each busbar 3 are combined in pairs (see details). Figure 5 , Figure 8 Conductive connecting piece 1 and metal connecting piece 2 are stamped into a bent shape using a stamping machine. After bending, conductive connecting piece 1 and metal connecting piece 2 are the same size but bent in opposite directions (see details). Figure 5 The specific parameters of conductive connecting piece 1 and metal connecting piece 2 are as follows: total height 226mm, width 25mm, thickness 2.0mm; wiring hole 103 (203) is opened 25mm from the top edge of the upper width center line; both conductive connecting piece 1 and metal connecting piece 2 wiring hole 103 (203) are circular holes with a diameter of 10.5mm; bolt hole 101 (201) is opened 106mm from the bottom edge of the middle width center line; bolt hole 101 (201) is an oblong hole with a length of 35mm, a width of 11.0mm, and a corner radius of 5.5mm (see details). Figure 6 , Figure 7 A bolt hole 102 (202) is located 20mm from the bottom edge along the center line of the lower width. The diameter of the circular hole is 10.5mm.

[0038] 2. Remove the copper clip connector: First, cut off the power supply to the unit. Then, remove the cable 11 connecting the tail end of the copper clip to the circuit breaker 7 and the cable 11 connecting the output end of the circuit breaker 7 to the main switch 9 on the floor. Next, remove the connector box 6 and the burnt copper clip connector.

[0039] 3. Install conductive shunt plates 1 and metal connecting plates 2 on busbar 3: Assign the left and right conductive shunt plates 1 and metal connecting plates 2 to the lead-out holes of each busbar 3 (see details). Figure 9 Insert the bolts into both sides of the busbar 3 respectively, clamp the busbar 3 in pairs, and the upper bolt holes 101 (201) and lower bolt holes 102 (202) on the bolts correspond one-to-one. Use L-shaped hook bolts 4 with a diameter of 10mm to pass through the upper bolt holes 101 (201) and lower bolt holes 102 (202) respectively to fix them (refer to) Figure 5 , Figure 8 (L-shaped hook bolt not shown).

[0040] 4. Assembly and Circuit Connection: After closing the busbar trunking cover, bring the upper parts of the conductive shunt plate 1 and the metal connecting plate 2 together and pass them through the insulating sleeve of the lead-out hole on the busbar trunking cover and the lead-out hole on the back of the connector box 6. Install the connector box 6, and use an M10 bolt 4 to pass through the 10.5mm diameter circular wiring hole 103 on the upper part of the conductive shunt plate 1. Tighten the DTM35 copper terminal block with a nut (see GB / T14315-2008 standard dimensions for details). The 35mm diameter of the DTM35 copper terminal block is connected... 2 Cable 11 is connected to the incoming terminal of circuit breaker 7, and the outgoing terminal of circuit breaker 7 is connected to the main floor switch 9 via cable 11 (see details). Figure 9 );

[0041] 5. Organize debugging: Use a multimeter to check that the connection is normal, restore the power supply to the unit, then close the circuit breaker 7, check the current and voltage. If they are normal, supply power to the meter box 8, close the main switch 9 of the floor, and restore power to each meter 10.

[0042] Example 4: Unit 1 of Building 3, a 15-story residential building in Chengnan Community, has 6 households per floor. An emergency power outage occurred on the 8th floor, requiring immediate repairs. The unit is powered by a three-phase four-wire air-insulated busbar trunking system. The busbar trunking casing 5 is grounded, with a rated voltage of 380V, a frequency of 50Hz AC power, and a rated current of 800A. The busbar trunking dimensions are: width 255mm, height 190mm; the four busbars 3 are made of aluminum plate, 60mm wide and 8mm thick; the plug-in box 6 has dimensions of 500mm height, 250mm width, and 150mm side thickness; the circuit breaker has a rated current of 150A. The meter box 8 has dimensions of 1040mm height, 648mm width, and 155mm side thickness; the main switch 9 has a rated current of 150A. Inspection revealed that the copper clamp plug-in connectors on this floor were burnt out and needed replacement. Figure 1 , Figure 4 , Figure 9 The emergency repair and installation operation steps in this embodiment are as follows:

[0043] 1. Select conductive connecting piece 1 and metal connecting piece 2 according to the specifications and model of the busbar trunking: The prefabricated conductive connecting piece 1 and metal connecting piece 2 are made of copper-aluminum composite plate with a thickness of 2.5mm. The conductive connecting piece 1 and metal connecting piece 2 of each busbar 3 are combined in pairs (see details). Figure 1 , Figure 4 Conductive connecting piece 1 and metal connecting piece 2 are stamped into flat plates using a stamping machine (see details). Figure 2 , Figure 3The specific parameters are as follows: Conductive connecting piece 1: total height 206mm, width 30mm, thickness 2.5mm; a wiring hole 103 is opened 25mm from the top edge of the upper width centerline, the wiring hole 103 is a circular hole with a diameter of 10.5mm; a bolt hole 101 is opened 86mm from the bottom edge of the middle width centerline, the bolt hole 101 is preferably an oblong hole, the hole length is 35mm, the width is 11.0mm, and the corner radius is 5.5mm (see details). Figure 2 The lower width centerline has a bolt hole 102, 10.5mm in diameter, located 20mm from the bottom edge. Metal connecting piece 2: 100mm high, 30mm wide, 2.5mm thick; a bolt hole 201, 86mm from the bottom edge, is located in the middle width centerline. The bolt hole 201 is ideally oblong, 35mm long, 11.0mm wide, with a 5.5mm radius corner, corresponding to the bolt mounting holes on conductive connecting piece 1 (see details). Figure 3 A bolt hole 202 is located 20mm from the bottom edge along the center line of the lower width. The diameter of the circular hole is 10.5mm.

[0044] 2. Remove the copper clip connector: First, cut off the power supply to the unit. Then, disconnect the cable 11 connecting the tail end of the copper clip to the circuit breaker 7 and the cable connecting the output end of the circuit breaker 7 to the main switch 9 on the floor. Next, remove the connector box 6 and the burnt copper clip connector.

[0045] 3. Install conductive shunt plate 1 and metal connecting plate 2 on busbar 3: Insert the aluminum side of conductive shunt plate 1 and metal connecting plate 2 into both sides of busbar 3 respectively, clamping busbar 3 in pairs. The upper holes 101 (201) and lower holes 102 (202) of the bolts correspond one-to-one. Use L-shaped hook bolts 4 with a diameter of 10mm to fix them through the upper holes 101 (201) and lower holes 102 (202) respectively (refer to) Figure 1 , Figure 4 (L-shaped hook bolt not shown).

[0046] 4. Assembly and Circuit Connection: After covering the busbar trunking with the cover plate, pass the other end of the conductive shunt plate 1 through the insulating sleeve of the lead-out hole on the busbar trunking cover plate and the lead-out hole on the back of the connector box 6. Install the connector box 6. Use an M10 bolt 4 to pass through the 10.5mm diameter circular wiring hole 103 on the upper part of the conductive shunt plate 1. Tighten the DTM35 copper terminal block with a nut (see GB / T14315-2008 standard dimensions). The 35mm diameter of the DTM35 copper terminal block is connected... 2 Cable 11 is connected to the incoming terminal of circuit breaker 7, and the outgoing terminal of circuit breaker 7 is connected to the main floor switch 9 via cable 11 (see details). Figure 9 );

[0047] 5. Organize debugging: Use a multimeter to check that the connection is normal, restore the power supply to the unit, then close the circuit breaker 7, check the current and voltage. If they are normal, supply power to the meter box 8, close the main switch 9 of the floor, and restore power to each meter 10.

[0048] Example 5: Unit 3 of Building 9, 11-story residential building in Ludong Community. Each floor of this unit has 4 households. A power outage occurred on the 6th floor, requiring emergency repairs. The unit is powered by a three-phase four-wire air-insulated busbar trunking system. The busbar trunking casing 5 is grounded, with a rated voltage of 380V, a frequency of 50Hz AC power, and a rated current of 630A. The busbar trunking dimensions are: width 175mm, height 130mm; the four busbars 3 are made of aluminum plate, 60mm wide and 6mm thick; the plug-in box 6 has dimensions of 500mm height, 250mm width, and a side thickness of 150mm; the circuit breaker has a rated current of 100A. The meter box 8 has dimensions of 780mm height, 648mm width, and a side thickness of 155mm; the main switch 9 has a rated current of 100A. Inspection revealed that the copper clamp plug-in connectors on this floor were burnt out and needed replacement. Figure 1 , Figure 4 , Figure 9 The emergency repair and installation operation steps in this embodiment are as follows:

[0049] 1. Select conductive connecting piece 1 and metal connecting piece 2 according to the specifications and model of the busbar trunking: The prefabricated conductive connecting piece 1 and metal connecting piece 2 are made of 4mm thick aluminum plate. The conductive connecting piece 1 and metal connecting piece 2 of each busbar 3 are combined in pairs (see details). Figure 1 , Figure 4 The conductive connecting piece 1 is stamped into a flat plate shape using a stamping machine (see details). Figure 2 , Figure 3 The specific parameters are as follows: Conductive connecting piece 1: total height 205mm, width 30mm, thickness 4.0mm; a wiring hole 103 is opened 25mm from the top edge of the upper width centerline, the wiring hole 103 is a circular hole with a diameter of 8.4mm; a bolt hole 101 is opened 85mm from the bottom edge of the middle width centerline, the bolt hole 101 is preferably an oblong hole, the hole length is 35mm, the width is 11.0mm, and the corner radius is 5.5mm (see details). Figure 2 The lower width centerline has a bolt hole 102, 20mm from the bottom edge, with a diameter of 8.4mm. Metal connecting piece 2: total height 100mm, width 30mm, thickness 4.0mm; the middle width centerline has a bolt hole 201, 85mm from the bottom edge. The bolt hole 201 is preferably oblong, with a length of 35mm, a width of 11.0mm, and a corner radius of 5.5mm, corresponding to the bolt mounting holes on conductive connecting piece 1 (see details). Figure 3A bolt hole 202 is located 20mm from the bottom edge along the center line of the lower width. The diameter of the circular hole is 8.4mm.

[0050] 2. Remove the copper clip connector: First, cut off the power supply to the unit. Then, remove the cable 11 connecting the tail end of the copper clip to the circuit breaker 7 and the cable 11 connecting the output end of the circuit breaker 7 to the main switch 9 on the floor. Next, remove the connector box 6 and the burnt copper clip connector.

[0051] 3. Install conductive shunt plates 1 and metal connecting plates 2 on busbar 3: Assign the left and right conductive shunt plates 1 and metal connecting plates 2 to the lead-out holes of each busbar 3 (see details). Figure 9 Insert the bolts into both sides of the busbar 3 respectively, clamp the busbar 3 in pairs, and the upper bolt holes 101 (201) and lower bolt holes 102 (202) on the bolts correspond one-to-one. Use M8 semi-circular head square neck bolts 4 to pass through the upper bolt holes 101 (201) and lower bolt holes 102 (202) respectively to fix them (see details). Figure 1 , Figure 4 );

[0052] 4. Assembly and Circuit Connection: After covering the busbar trunking with the cover plate, pass the other end of the conductive shunt plate 1 through the insulating sleeve of the lead-out hole on the busbar trunking cover plate and the lead-out hole on the back of the connector box 6. Install the connector box 6, and use an M8 bolt 4 to pass through the 8.4mm diameter circular wiring hole 103 on the upper part of the conductive shunt plate 1. Tighten the DTM35 copper terminal block with a nut (see GB / T14315-2008 standard dimensions). The 35mm diameter of the DTM35 copper terminal block is connected... 2 Cable 11 is connected to the incoming terminal of circuit breaker 7, and the outgoing terminal of circuit breaker 7 is connected to the main floor switch 9 via cable 11 (see details). Figure 9 );

[0053] 5. Organize debugging: Use a multimeter to check that the connection is normal, restore the power supply to the unit, then close the circuit breaker 7, check the current and voltage. If they are normal, supply power to the meter box 8, close the main switch 9 of the floor, and restore power to each meter 10.

[0054] Example 6: Unit 2 of Building 3, a 9-story residential building in the Garden Community, has 2 households per floor. An emergency power outage occurred on the 3rd floor, requiring immediate repairs. The unit is powered by a three-phase four-wire air-insulated busbar trunking system. The busbar trunking casing 5 is grounded, with a rated voltage of 380V, a frequency of 50Hz AC power, and a rated current of 400A. The busbar trunking dimensions are: width 175mm, height 110mm; the four busbars 3 are made of aluminum plate, 40mm wide and 6mm thick; the plug-in box 6 has dimensions of 500mm high, 250mm wide, and a side thickness of 150mm; the circuit breaker 7 has a rated current of 100A; the meter box 8 has dimensions of 640mm high, 535mm wide, and a side thickness of 140mm; the main floor switch 9 has a rated current of 100A. Inspection revealed that the copper clamp plug-in components on this floor were burnt out and needed replacement. Figure 1 , Figure 4 , Figure 9 The emergency repair and installation operation steps in this embodiment are as follows:

[0055] Select conductive connecting piece 1 and metal connecting piece 2 according to the specifications and model of the busbar trunking: The prefabricated conductive connecting piece 1 and metal connecting piece 2 are both made of 3mm thick aluminum plate. Each busbar 3 has a pair of conductive connecting pieces 1 and metal connecting pieces 2 (see details). Figure 1 , Figure 4 The conductive connecting piece 1 is stamped into a flat plate shape using a stamping machine (see details). Figure 2 , Figure 3 The specific parameters are as follows: Conductive connecting piece 1: Total height 185mm, width 30mm, thickness 3.0mm. A wiring hole 103 is located 30mm from the top edge of the upper width centerline. The wiring hole 103 is a circular hole with a diameter of 8.4mm. A bolt hole 101 is located 65mm from the bottom edge of the middle width centerline. The bolt hole 101 is an oblong hole with a length of 30mm, a width of 9.0mm, and a corner radius of 4.5mm (see details). Figure 2 The lower width centerline has a bolt hole 102, 20mm from the bottom edge, with a diameter of 8.4mm. Metal connecting piece 2: total height 90mm, width 30mm, thickness 3.0mm; the middle width centerline has a bolt hole 201, 65mm from the bottom edge. The bolt hole 201 is preferably oblong, with a length of 30mm, a width of 9.0mm, and a corner radius of 4.5mm, corresponding to the bolt mounting holes on conductive connecting piece 1 (see details). Figure 3 A bolt hole 202 is located 20mm from the bottom edge along the center line of the lower width. The diameter of the circular hole is 8.4mm.

[0056] 2. Remove the copper clip connector: First, cut off the power supply to the unit. Then, disconnect the cable 11 connecting the tail end of the copper clip to the circuit breaker 7 and the cable connecting the output end of the circuit breaker 7 to the main switch 9 on the floor. Next, remove the connector box 6 and the burnt copper clip connector.

[0057] 3. Install conductive shunt plates 1 and metal connecting plates 2 on busbar 3: Assign the left and right conductive shunt plates 1 and metal connecting plates 2 to the lead-out holes of each busbar 3 (see details). Figure 9 Insert the bolts into both sides of the busbar 3 respectively, clamp the busbar 3 in pairs, and the upper bolt holes 101 (201) and lower bolt holes 102 (202) on the bolts correspond one-to-one. Use M8 semi-circular head square neck bolts 4 to pass through the upper bolt holes 101 (201) and lower bolt holes 102 (202) respectively to fix them (see details). Figure 1 , Figure 4 );

[0058] 4. Assembly and Circuit Connection: After covering the busbar trunking with the cover plate, pass the other end of the conductive shunt plate 1 through the insulating sleeve of the lead-out hole on the busbar trunking cover plate and the lead-out hole on the back of the connector box 6. Install the connector box 6. Use an M8 bolt 4 to pass through the 8.4mm diameter circular wiring hole 103 on the upper part of the conductive shunt plate 1. Tighten the DTM25 copper terminal block with a nut (see GB / T14315-2008 standard dimensions). The 25mm diameter of the DTM25 copper terminal block is connected... 2 Cable 11 is connected to the incoming terminal of circuit breaker 7, and the outgoing terminal of circuit breaker 7 is connected to the main floor switch 9 via cable 11 (see details). Figure 9 );

[0059] 5. Organize debugging: Use a multimeter to check that the connection is normal, restore the power supply to the unit, then close the circuit breaker 7, check the current and voltage. If they are normal, supply power to the meter box 8, close the main switch 9 of the floor, and restore power to each meter 10.

[0060] According to the technical solution of this utility model, the problem of online rapid replacement of conductive shunt plates 1, which are prone to failure in the field and are represented by copper clips, is easily solved. A high-quality, safe, and stable bolt 4 connection is achieved between the conductive shunt plate 1 and the busbar 3, and the electrical load is not reduced after power is applied, significantly reducing power failures and ensuring the long-term stable operation of the power supply system. This utility model has a simple structure, is easy to construct, and can quickly restore power supply, improving the speed of power emergency repairs and reducing the power restoration time from more than 4 hours to less than 1 hour.

[0061] Since the stamping machine and L-shaped hook bolt are already well-known and widely used, their specific structure and working principle will not be described in detail here.

Claims

1. A structure for quick connection of a conductive shunt plate to a busbar in a busbar slot, comprising a conductive shunt plate, a metal connecting plate, a busbar, and bolts, wherein the conductive shunt plate has a wiring hole on its upper part, characterized in that, The conductive shunt plate and the metal connecting plate are provided with bolt holes at the middle of the part close to the edge of the busbar and bolt holes at the bottom. The conductive shunt plate and the metal connecting plate are clamped together with bolts to fix the busbar together.

2. The structure for quick connection of conductive shunt plates to busbars in busbar slots according to claim 1, characterized in that, The conductive shunt plate is bent, with the upper and lower parts parallel after bending.

3. The structure for quick connection of conductive shunt plates to busbars in busbar slots according to claim 1, characterized in that, The upper bolt hole in the middle of the conductive shunt plate is a waist-shaped hole, and the lower bolt hole is a square hole.

4. The structure for quick connection of conductive shunt plates to busbars in busbar slots according to claim 1, characterized in that, The wiring hole on the upper part of the conductive shunt plate is a square hole.

5. The structure for quick connection of conductive shunt plates to busbars in busbar slots according to claim 1, characterized in that, The bolt is a semi-circular head square neck bolt.

6. The structure for quick connection of conductive shunt plates to busbars in busbar slots according to claim 1, characterized in that, The bolt is an L-shaped hook bolt.

Images