CN202794339U - 10kV handcart switch circuit resistance test wiring assistance device - Google Patents

Abstract

The utility model relates to electric power tools, in particular to an auxiliary wiring device for testing the circuit resistance of a 10kV handcart switch. and the connection port of the operating rod are respectively installed on the upper and lower planes of the test top plate, and two through holes are arranged on the inner side of the periphery of the test top plate, and the two through holes are voltage wiring holes and current wiring holes respectively; the test contact column The diameter of the length matches the distance between the two moving contacts of the handcart switch circuit, and the connecting port of the operating rod is connected to the insulating operating rod. The characteristics and technical achievements of the utility model are that it can effectively avoid the occurrence of heating and blown accidents of the fastening coil of the moving contact of the 10kV handcart switch, so that the influence of the contact resistance on the test of the circuit resistance of the 10kV handcart switch is greatly reduced, and the 10kV handcart switch is greatly improved. Accuracy of test data for handcart switch circuit resistance.

Description

10kV Handcart Switch Circuit Resistance Test Auxiliary Wiring Device

technical field

The present invention relates to power tools, in particular to a 10kV handcart switch circuit resistance test auxiliary wiring device.

Background technique

10kV handcart switch loop resistance test is one of the daily work contents of power substation maintenance. Since the moving contact of 10kV handcart switch is fixed by two fastening coils, and the distance between the two fastening coils is narrow, the loop resistance tester The cross-sectional area of the voltage and current clamps is relatively close to the distance between the two fastening coils. It is easy to cause the current wiring to touch the fastening coils during on-site wiring, and the loop resistance test uses a large current, so it is easy to cause damage to the fastening lines during the test. Fever and blowouts bring huge safety hazards to maintenance work.

In addition, the moving contact of the 10kV handcart switch is prone to oxidation due to long-term operation. Usually, the steel sheet on the outer surface of the moving contact has a thicker oxide layer, and the voltage/current wiring clamps are clamped on the outer steel sheet of the moving contact. The formed contact resistance often causes the test result of loop resistance to be too large, which brings misleading to the troubleshooting of hidden troubles.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies of the prior art, and provide an auxiliary wiring device for 10kV handcart switch circuit resistance test which can effectively avoid heating and blown accidents, reduce the impact on the circuit test, and improve the accuracy of test data.

The purpose of the present invention is achieved by the following approach:

10kV handcart switch loop resistance test auxiliary wiring device, its structural key points are: the wiring device includes a test top plate, a test contact post and an operation rod connection port, and the test contact post and operation rod connection port are respectively installed on the top and bottom of the test top board On the two planes, two through holes are arranged on the inner side of the test top plate, and the two through holes are voltage wiring holes and current wiring holes respectively; The distance between them is suitable, and the connecting port of the operating rod is connected with the insulating operating rod.

When in use, first clamp the voltage wiring pliers of the loop resistance tester to the voltage wiring hole, clamp the current wiring pliers to the current wiring hole, connect the operation rod connection port to the insulating operation rod, and the operator holds the insulation wire connected to the auxiliary wiring device. Operate the stick, insert the test contact column of the auxiliary wiring device inside the two moving contacts of the 10kV handcart switch circuit, and directly connect with the inner end face of the moving contact, and then perform the test according to the normal procedure.

Since the voltage wiring pliers and current wiring pliers can be connected to the auxiliary wiring device in advance, the distance between them is fixed, and then directly connected to the inner side of the two moving contacts of the 10kV handcart switch circuit, effectively avoiding the 10kV handcart switch. Fastening coil heating and blown accident occurred. In addition, although there is often an oxide layer on the outer peripheral surface of the moving contact, there are silver-plated conductive contacts on the inner end surface of the moving contact, so the use of plug-in can effectively reduce the contact resistance and make the contact The impact of resistance on the resistance test of the 10kV handcart switch circuit is greatly reduced, which greatly improves the accuracy of the test data of the 10kV handcart switch circuit resistance.

The utility model can be further specifically described as:

The connecting port of the operating rod is an interface with an internal thread structure, which is spirally connected with the insulating operating rod.

or it could be:

The connection port of the operating rod is an interface with an external thread structure, and the end of the insulating operating rod is an internal thread structure, and the two are connected by a screw.

The connection between the connection port of the operating rod and the insulating operating rod can also be in the form of a buckle connection or the like.

To sum up, the characteristics and technical achievements of this utility model are that it can effectively avoid the accident of heating and blowing of the fastening coil of the moving contact of the 10kV handcart switch, and greatly reduce the influence of contact resistance on the test of the circuit resistance of the 10kV handcart switch. Greatly improved the accuracy of the 10kV handcart switch circuit resistance test data.

Description of drawings

Fig. 1 is a structural schematic diagram of the utility model described 10kV handcart switch loop resistance test auxiliary wiring device.

Detailed ways

Best practice:

A 10kV handcart switch circuit resistance test auxiliary wiring device, the wiring device includes a test top plate 2, a test contact post 4 and an operation rod connection port 5, and the test contact post 4 and the operation rod connection port 5 are respectively installed on the test top board 2 On the upper and lower planes, two through holes are arranged on the inner side of the test top plate 2, and the two through holes are respectively the voltage wiring hole 1 and the current wiring hole 2; the diameter length of the test contact column 4 is the same as that of the handcart switch. The distance between the two moving contacts of the circuit is matched, and the connecting port 5 of the operating rod is connected with the insulating operating rod 6 .

During the circuit resistance test of the 10kV handcart switch, the voltage wiring of the loop resistance tester is clamped on the voltage wiring hole 1, and the current wiring of the loop resistance tester is clamped on the current wiring hole 2. The test contact column 4 is inserted into the inner side of the moving contact of the 10kV handcart switch to complete the test wiring work.

The utility model effectively avoids the occurrence of heating and blown accidents of the fastening coil of the moving contact of the 10kV handcart switch, greatly reduces the influence of the contact resistance on the test of the circuit resistance of the 10kV handcart switch, and greatly improves the test data of the circuit resistance of the 10kV handcart switch the accuracy.

The parts not described in this embodiment are the same as the prior art.

Claims (4)

1.10kV wheelbarrow switch loop resistance test auxiliary connection device, it is characterized in that: this termination includes test top board, test contact stud and hook stick connector, test contact stud and hook stick connector are installed on respectively on upper and lower two planes of test top board, be provided with two through holes along the inboard in this test top board week, this two through hole is respectively voltage wiring hole and electric current wiring hole; Distance between the diameter length of test contact stud and two moving contacts in wheelbarrow switch loop is suitable, and the hook stick connector is connected with insulated operating rod.

2. 10kV wheelbarrow switch loop resistance according to claim 1 test auxiliary connection device is characterized in that: the hook stick connector is one to have the interface of female thread structure, and it is connected with the insulated operating rod spiral.

3. 10kV wheelbarrow switch loop resistance according to claim 1 is tested the auxiliary connection device, and it is characterized in that: the hook stick connector is a kind of interface with external thread structure, and the end of insulated operating rod is female thread structure, and the two spiral connects.

4. 10kV wheelbarrow switch loop resistance according to claim 1 is tested the auxiliary connection device, and it is characterized in that: the hook stick connector is connected with the buckle that is connected to of insulated operating rod.

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