A telescopic mutual inductance current polarity test 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, wherein the lap joint arm is fixedly connected by a telescopic rod and a gripper, so A wire is passed through the telescopic rod, and both ends of the wire are electrically connected with the gripper and the battery box, respectively. The gripper includes: a first connecting part, a second connecting part and a fixing head. The first connection part is rotatably connected with the second connection part, the second connection part is rotatably connected with the fixed head, the bottom of the fixed head is electrically connected with the wire, the first connection part, the second connection part and The fixed head forms a ring structure. It solves the problem that the staff is time-consuming and laborious to climb on the transformer, there is a risk of falling, and the safety cannot be guaranteed when the wires are overlapped at high altitude.

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 in the new, renovated and expanded interval, the polarity test of the secondary circuit of the current transformer needs to be carried out to ensure the correct wiring. Go to the P1 and P2 sides of the primary windings of the transformer, and then connect the wires to the dry battery pack for flashing and co-current, and then use a pin multimeter to confirm the direction of the secondary current at the interval terminal box, and the staff climbs to the transformer. It is time-consuming and labor-intensive, and there is a risk of falling. It also requires high-altitude wire laps, and safety cannot be guaranteed. SUMMARY OF THE INVENTION [0003] In order to solve the above deficiencies in the prior art, th...

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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