Telescopic current transformer rated ratio testing device

Abstract

The invention relates to the power test equipment auxiliary test field, and specifically relates to a telescopic current transformer rated ratio testing rod. The telescopic current transformer rated ratio testing device comprises at least one insulating rod, an alligator clip, a gun body for controlling linkage of the alligator clip, a haulage rope, an insulating annealed copper wire and a binding post, and is characterized in that the insulating rod is provided with an inner sleeve and an outer sleeve; a 45DEG included angle is formed between the base of the alligator clip and the central axis of the alligator clip; the gun body includes a gun barrel, a gun holder and a trigger; one end of the trigger penetrates through a trigger hole and then enter the gun barrel; and a lacing hole is formed in the end part of the end of the trigger. Compared with the prior art, the telescopic current transformer rated ratio testing device accords with the human engineering, so that when people holds the gun holder in one hand of the people and the other hand of the people holds the insulating rod and stretches out the insulating rod forward, a 45DEG angle is basically formed between the insulating rod and the ground. Therefore, the alligator clip at the head is arranged in an inclined way by 45DEG and is accurate in operation and control; and, the telescopic current transformer rated ratio testing device has a gun-simulating design and is unique in the moulding.

Description

technical field [0001] The invention relates to the field of auxiliary testing of electrical testing equipment, in particular to a scalable current transformer transformation ratio testing device. Background technique [0002] When the protection test personnel use the current transformer calibrator to test the parameters such as the transformation ratio of the current transformer in the substation switch cabinet, because the high-voltage room of the switch cabinet is relatively narrow, and the current transformer is deep in the high-voltage room, the current transformer It is more difficult to wire on the primary copper bar. At present, thin and small personnel are used to drill into the switchgear for wiring, which is laborious and laborious. For small switchgears that are difficult to enter, they often use the insulation rods on the site of the substation to tie up the test line clips and send them to the flat copper bars of the current transformers. This method is a was...

AI Technical Summary

Problems solved by technology

However, due to the snap-fit ​​relationship between the elasticity and the wire, vibration will inevitably occur during the operation, which will cause current changes and affect the test results.

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