Telescopic mutual inductance current polarity testing device

Abstract

The invention relates to the technical field of current mutual inductance polarity testing, in particular to a telescopic mutual-inductance current polarity testing device comprising a lap joint arm and a battery box. The lap joint arm is formed by fixedly connecting a telescopic rod and a gripper. A wire is arranged in the telescopic rod in a communicating mode. The two ends of the wire are electrically connected with the gripper and the battery box respectively. The gripper comprises a first connecting part, a second connecting part and a fixing head, the first connecting part is rotationally connected with the second connecting part, the second connecting part is rotationally connected with the fixing head, the bottom of the fixing head is electrically connected with the wire, and the first connecting part, the second connecting part and the fixing head form a circular ring structure. Therefore, problems that time and labor are wasted when a worker climbs to a mutual inductor, falling risks exist, and safety cannot be guaranteed when high-altitude wire lap joint is conducted are solved.

Description

technical field [0001] The invention relates to the technical field of current mutual inductance polarity testing, in particular to a telescopic mutual inductance current polarity testing device. Background technique [0002] When the power grid configuration is accepted for new, rebuilt and expanded intervals, it is necessary to conduct a polarity test on the secondary circuit of the current transformer to ensure that the wiring is correct. At present, the commonly used method is for the staff to climb onto the transformer and overlap the wires respectively. To the primary winding P1 and P2 side of the transformer, and then connect the wires to the dry battery pack for flashing and co-current, and then confirm the direction of the secondary current at the interval terminal box with a pin-type multimeter, and the staff climbs to the transformer It is time-consuming and labor-intensive, and there is a risk of falling, and high-altitude wire bonding is also required, so safety...

AI Technical Summary

Problems solved by technology

[0002] When the power grid configuration is accepted for new, rebuilt and expanded intervals, it is necessary to conduct a polarity test on the secondary circuit of the current transformer to ensure that the wiring is correct. At present, the commonly used method is for the staff to climb onto the transformer and overlap the wires respectively. To the primary winding P1 and P2 side of the transformer, and then connect the wires to the dry battery pack for flashing and co-current, and then confirm the direction of the secondary current at the interval terminal box with a pin-type multimeter, and the staff climbs to the transformer It is time-consuming and labor-intensive, and there is a risk of falling, and high-altitude wire bonding is required, so safety cannot be guaranteed

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