Testing device of current transformer

Abstract

The utility model discloses a testing device of a current transformer, which comprises a machine table and a detection mechanism, the top of the machine table is provided with the detection mechanism, and the detection mechanism comprises an ampere meter, an ammeter, a connecting seat, a power connection jack, a sliding groove, a sliding block, a wire, a fixed seat, an inserting rod and a butt joint hole. One side of the top of the machine table is provided with an ampere meter and an electricity meter which are connected with an internal circuit of the machine table, one side of the top of the machine table is provided with a connecting seat, and one side of the surface of the connecting seat is provided with a power connection jack. Butt-joint holes in the end portions of the inserting rods are in butt joint with S1 and S2 wiring ends of the mutual inductor respectively, at the moment, the sliding blocks slide to enable the end portions of the wires to penetrate through the interior of the mutual inductor and to be in butt joint with the power connection jacks in the connecting base, then combination of test circuits can be completed, the control switch is turned on to connect the circuits, testing can be conducted, and wiring and dismounting operation is not needed in the testing process. And the test efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to current transformer test technical field, especially relate to a testing arrangement of current transformer. BACKGROUND

[0002] Current transformer is the instrument that converts the primary side big current into the secondary side small current to measure according to electromagnetic induction principle, and the current size in the line of power generation, power transformation, power transmission, power distribution and power utilization is very different, from several ampere to several ten thousand ampere, to facilitate measurement, protection and control need to be converted into the current of comparison uniform, in addition, the voltage on the line is generally very high, such as direct measurement is very dangerous, and current transformer plays the role of current conversion and electrical isolation, and is widely used, because it is used in circuit system, must be tested before leaving factory, to ensure its use effect.

[0003] The current transformer has the following disadvantages when it is detected before leaving factory: when the current transformer is tested, the surface of the tested transformer needs to be connected with the line, then the electric wire is connected and the ammeter and the electric meter are used for detection, the current transformer needs to be connected with the line during the detection operation, the operation is complicated, and the detection efficiency is very low, therefore, the utility model provides a testing arrangement of current transformer. UTILITY MODEL CONTENT

[0004] The utility model discloses a testing arrangement of current transformer, which is convenient for testing the current transformer and greatly improves the detection efficiency, and can effectively solve the problems in the background art.

[0005] To achieve the above object, the utility model takes the technical scheme that:

[0006] A testing arrangement of current transformer, including machine table, still including detection mechanism, the machine table top is provided with detection mechanism, the detection mechanism includes ammeter, electric meter, connecting seat, electricity connection hole, sliding slot, sliding block, electric wire, fixed base, plug rod and butt joint hole, the machine table top one side is installed with the ammeter and electric meter that connecting machine table internal line, the machine table top one side is provided with connecting seat and is seted up with electricity connection hole on connecting seat surface one side, the machine table surface is seted up with sliding slot and is slidably connected with sliding block through sliding slot, the sliding block end is installed with the electric wire corresponding with the position of connecting seat, the machine table top is close to the fixed base that sliding slot end one side sets up, the fixed base is inserted with plug rod and is seted up with butt joint hole corresponding with the electric wire end position of current transformer in plug rod end.

[0007] Further, the installation mechanism is arranged inside the machine table, comprising a mounting slot, a screw hole, a screw rod, a clamping seat and a roller, the mounting slot is arranged on the surface of the machine table between the connecting seat and the fixed seat, the screw hole is arranged on the side of the connecting seat, and the screw rod is connected to the screw hole through screwing, the clamping seat is arranged on the end of the screw rod and located in the mounting slot, and the roller is embedded on the surface of the clamping seat and the inner wall of the mounting slot; the mounting slot structure on the surface of the machine table is used to insert the current transformer to be tested, before the test operation, the screw rod can be twisted along the screw hole, the position of the clamping seat is adjusted by the screw rod, and then the distance between the surface of the clamping seat and the inner wall of the mounting slot is adjusted, so that the distance is exactly the same as the width of the transformer to be tested, at this time, the wiring end of the sensor to be tested is inserted into the mounting slot on the side of the fixed seat and horizontally, the position of the wiring end is adjusted by the roller structure, and the wiring end is aligned with the fixed seat, so that the test can be performed, the flexibility of the detection operation is improved, and the current transformer of different specifications is suitable.

[0008] Further, the control switch is arranged inside the sliding block, the control end of the control switch extends to the outside of the sliding block, and the power supply end of the wire is connected with the control switch; the power supply end of the circuit can be controlled by the control switch.

[0009] Further, the spring is arranged on the surface of the fixed seat on the side of the sliding groove, the fixed seat is movably connected with the insulating seat through the spring, and the insertion rod is connected with the insulating seat; the insertion rod structure can be adjusted by the insulating seat, the insertion rod is moved by pulling the insulating seat before the transformer is inserted, the insulating seat is released after the transformer is installed in place, and the insertion hole at the end of the insertion rod is inserted into the wiring end of the transformer by the spring force.

[0010] Further, the connecting ring is arranged inside the clamping seat on the side of the clamping seat close to the screw rod, and the screw rod extends to the outside of the machine table on the side away from the connecting ring; the screw rod is twisted to drive the rotation of the connecting ring, and then the horizontal movement of the screw rod drives the horizontal movement of the clamping seat.

[0011] Compared with the prior art, the utility model have following beneficial effect: the surface of machine platform is equipped with electric meter and ammeter, the live wire terminal of electric meter is equipped with the circuit connected with plug rod through ammeter, and the live wire grounding terminal of electric meter is also equipped with the circuit connected with electric wire power supply terminal, the other side plug rod in fixed seat and the terminal of connecting seat are connected with the zero line terminal of electric meter through ammeter, when the test of mutual inductor is carried out, the insulation seat is pulled out, the mutual inductor is slid to the appropriate position, the insulation seat is loosened after reaching the position alignment, the butt joint hole of plug rod end is respectively butt jointed with S1 and S2 terminal of mutual inductor, at this moment, the wire end is made into the mutual inductor inside through the sliding block and is butt jointed with the electric plug of connecting seat inside, the combination of test circuit can be completed, the control switch is opened, the circuit is connected, the test data of mutual inductor can be observed and compared through electric meter and ammeter, after detection is completed, only needs to disconnect the circuit, removes the sliding block and pulls out the insulation seat, the mutual inductor can be removed, and the test process does not need to connect and disconnect the operation, greatly improves the test efficiency, the installation groove structure of machine platform surface is used to insert the current transformer to be tested, before test operation, can follow the screw hole and turn the screw rod, the position of clamp holder is adjusted with the screw rod and then the distance between its surface and the inner wall of installation groove is adjusted, so that the distance is exactly the same as the width specification of the mutual inductor to be tested, at this moment, the wire terminal of the sensor to be tested is inserted into the installation groove inside towards the fixed seat side and horizontally, the position is adjusted by using the roller structure, so that it is aligned with the fixed seat, and the test can be carried out, the flexibility of detection operation is improved, and it is suitable for different specifications of current transformer. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the whole structure schematic diagram of the utility model a current transformer's testing arrangement.

[0013] Figure 2 It is the machine table top view structure schematic diagram of the utility model a current transformer's testing arrangement.

[0014] Figure 3 It is the fixed seat surface structure schematic diagram of the utility model a current transformer's testing arrangement.

[0015] Figure 4 It is the installation groove internal structure schematic diagram of the utility model a current transformer's testing arrangement.

[0016] In the drawing: 1, machine table;2, detection mechanism;201, ammeter;202, electric meter;203, connecting seat;204, electric plug;205, sliding groove;206, sliding block;207, electric wire;208, control switch;209, fixed seat;210, spring;211, insulation seat;212, plug rod;213, butt joint hole;3, installation mechanism;301, installation groove;302, screw hole;303, screw rod;304, clamp holder;305, connecting ring;306, roller. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0018] As shown in Figures 1-4 A current transformer testing device, comprising a machine table 1, further comprising a detection mechanism 2, the machine table 1 top is provided with the detection mechanism 2, the detection mechanism 2 includes ammeter 201, wattmeter 202, connecting seat 203, power jack 204, sliding groove 205, sliding block 206, wire 207, fixed seat 209, plug rod 212 and docking hole 213, the machine table 1 top side is installed with ammeter 201 and wattmeter 202 connected with the internal circuit of the machine table 1, the machine table 1 top side is provided with connecting seat 203 and the surface side of connecting seat 203 is provided with power jack 204, the surface of the machine table 1 is provided with sliding groove 205 and is slidably connected with sliding block 206 through sliding groove 205, the end of sliding block 206 is installed with wire 207 corresponding to the position of connecting seat 203, the end of the machine table 1 top near sliding groove 205 is provided with fixed seat 209, the fixed seat 209 is inserted with plug rod 212 and the end of plug rod 212 is provided with docking hole 213 corresponding to the position of current transformer terminal.

[0019] Further comprising mounting mechanism 3, the machine table 1 is provided with mounting mechanism 3, the mounting mechanism 3 includes mounting groove 301, screw hole 302, screw rod 303, clamping seat 304 and roller 306, the surface of the machine table 1 is provided with mounting groove 301 between connecting seat 203 and fixed seat 209, the machine table 1 is provided with screw hole 302 near connecting seat 203 side and is screw-connected with screw rod 303 through screw hole 302, the end of screw rod 303 is installed with clamping seat 304 in mounting groove 301 and the surface of clamping seat 304 and the inner wall of mounting groove 301 are embedded with roller 306; the structure of the mounting groove 301 of the surface of the machine table 1 is used to insert the current transformer to be tested, before testing operation, the screw rod 303 can be twisted along the screw hole 302, the position of the clamping seat 304 is adjusted by the screw rod 303 and then the distance between its surface and the inner wall of the mounting groove 301 is adjusted, so that the distance is exactly the same as the width specification of the transformer to be tested, at this time the terminal of the sensor to be tested is inserted into the mounting groove 301 horizontally towards the side of fixed seat 209, the position is adjusted by using the structure of roller 306, so that it is aligned with fixed seat 209 and testing can be carried out, the flexibility of detection operation is improved, and it is suitable for different specifications of current transformers.

[0020] The sliding block 206 is internally provided with a control switch 208, the control end of the control switch 208 extends to the outside of the sliding block 206, the power supply end of the electric wire 207 is connected with the control switch 208, the fixed seat 209 is externally provided with a spring 210 on one side facing the sliding groove 205, the fixed seat 209 is movably connected with an insulating seat 211 through the spring 210, and the end of the plug rod 212 is connected with the insulating seat 211. The control switch 208 can control the power supply end of the circuit, the insulating seat 211 can adjust the structure of the plug rod 212, the insulating seat 211 is pulled to drive the plug rod 212 to move before the transformer is inserted, the insulating seat 211 is released after the transformer is installed in place, and the spring 210 is used to make the end of the plug rod 212 inserted into the peripheral wire end of the transformer.

[0021] The screw rod 303 is internally provided with a connecting ring 305 on one end close to the clamping seat 304, and the other end of the screw rod 303 extends to the outside of the machine table 1. When the screw rod 303 is screwed, the connecting ring 305 is driven to rotate, and then the horizontal movement of the screw rod 303 drives the horizontal movement of the clamping seat 304.

[0022] It should be noted that the present invention is a test device for a current transformer. When in use, an electric meter 202 and an ammeter 201 are provided on the surface of the machine 1. The live wire terminal of the electric meter 202 is provided with a line connected to the plug rod 212 through the ammeter 201. At the same time, the live wire grounding terminal of the electric meter 202 is also provided with a line connected to the power supply end of the wire 207. The plug rod 212 on the other side of the fixing seat 209 and the terminal of the connecting seat 203 are connected to the neutral wire terminal of the electric meter 202 through the ammeter 201. When testing the transformer, pull out the insulating seat 211 and slide the transformer to a suitable position. After it is aligned in place, release the insulating seat 211. The docking holes 213 at the ends of the plug rod 212 are docked with the S1 and S2 terminals of the transformer respectively. At this time, the sliding slider 206 allows the end of the wire 207 to pass through the interior of the transformer and dock with the power socket 204 inside the connecting seat 203. The combination of the test circuit can be completed, and the control switch 20 is turned on. 8. The circuit is connected, and the test data of the transformer can be observed and compared through the ammeter 202 and the ammeter 201. After the test is completed, the circuit can be disconnected, the slider 206 is removed, and the insulating seat 211 is pulled out to remove the transformer. The test process does not require wiring or disconnecting, which greatly improves the test efficiency. The mounting slot 301 structure on the surface of the machine 1 is used to insert the current transformer to be tested. Before the test operation, the screw 303 can be screwed along the screw hole 302. The screw 303 drives the position of the clamping seat 304 to adjust the distance between its surface and the inner wall of the mounting slot 301 so that the distance is exactly the same as the width specification of the transformer to be tested. At this time, the terminal of the sensor to be tested is facing the side of the fixing seat 209 and inserted horizontally into the mounting slot 301. The roller 306 structure is used to slide and adjust its position until it is aligned with the fixing seat 209. The test can be carried out. This improves the flexibility of the test operation and is suitable for current transformers of different specifications.

[0023] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A testing device for current transformers, comprising a bench (1), characterized in that, It also includes detection mechanism (2), the machine table (1) top is provided with detection mechanism (2), detection mechanism (2) includes ammeter (201), electricity meter (202), connecting seat (203), electricity jack (204), chute (205), sliding block (206), wire (207), fixed seat (209), plug rod (212) and docking hole (213), one side of the machine table (1) top is mounted with ammeter (201) and electricity meter (202) connected with the internal circuit of the machine table (1), one side of the machine table (1) top is provided with connecting seat (203) and connecting seat (203) surface side is provided with electricity jack (204), the surface of the machine table (1) is provided with chute (205) and is connected with sliding block (206) through chute (205), the end of the sliding block (206) is provided with wire (207) corresponding to the position of connecting seat (203), the fixed seat (209) is arranged on one side of the machine table (1) top near the end of chute (205), the fixed seat (209) is inserted with plug rod (212) and the end of plug rod (212) is provided with docking hole (213) corresponding to the position of current transformer terminal.

2. A testing device for a current transformer according to claim 1, characterized in that: It also includes mounting mechanism (3), the machine table (1) is provided with mounting mechanism (3), the mounting mechanism (3) includes mounting slot (301), screw hole (302), screw rod (303), clamping seat (304) and roller (306), the mounting slot (301) for inserting the current transformer to be measured is arranged on the surface of the machine table (1) between connecting seat (203) and fixed seat (209), the screw hole (302) is arranged on one side of the machine table (1) near connecting seat (203) and is connected with screw rod (303) through screw hole (302), the end of the screw rod (303) is provided with clamping seat (304) in the mounting slot (301), and the roller (306) is embedded on one side of the surface of the clamping seat (304) and the inner wall of the mounting slot (301).

3. The testing device for a current transformer according to claim 1, characterized in that: The control switch (208) is arranged in the sliding block (206), and the control end of the control switch (208) extends to the outside of the sliding block (206).

4. The testing device for a current transformer according to claim 1, characterized in that: The spring (210) is arranged on one side of the surface of the fixed seat (209) facing the chute (205), the fixed seat (209) is movably connected with the insulating seat (211) through the spring (210), and the end of the plug rod (212) is connected with the insulating seat (211).

5. The testing device for a current transformer according to claim 2, characterized in that: The connecting ring (305) is arranged in the clamping seat (304) on one end of the screw rod (303) close to the clamping seat (304), and the screw rod (303) extends to the outside of the machine table (1) on the other end away from the connecting ring (305).

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