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Telescopic current transformer rated ratio testing device

A current transformer and ratio test technology, applied in the direction of measuring device, measuring device casing, measuring electrical variables, etc., can solve the problems of current change, affecting test results, jitter, etc., to achieve the effect of unique shape and precise control

Inactive Publication Date: 2016-08-03
STATE GRID SHANDONG ELECTRIC POWER CO LAIZHOU POWER SUPPLY CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Telescopic current transformer rated ratio testing device
  • Telescopic current transformer rated ratio testing device
  • Telescopic current transformer rated ratio testing device

Examples

Experimental program
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Embodiment Construction

[0026] see Figure 1-9 , a retractable current transformer transformation ratio test device, comprising more than one insulating rod 1, crocodile clip 2, gun body 3 for controlling the linkage of crocodile clips, traction rope 4, insulated soft copper wire 5, terminal post 6, and Features:

[0027] One end of the insulating rod 1 is affixed to the inner sleeve 12 with internal threads, and the other end is affixed to the outer sleeve 13 with external threads. The inner sleeve of another insulating rod can be connected with the inner sleeve of this insulating rod. The outer sleeve is screwed together, and the rod body 11 of the insulating rod is provided with a lead hole 14 that can accommodate the insulated annealed copper wire 5 to pass through;

[0028] The alligator clip includes a tube base 21, a lower clamping portion 22 fixedly connected to the tube base 21, an upper clamping portion 23 hinged to the lower clamping portion 22, two leaf springs 24, and a pin shaft 25; T...

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R29/20G01R1/04
CPCG01R1/04G01R1/0425G01R29/20
Inventor 王永清王鲁武明良林鹏飞刘亚东马俊周伟晗徐小惠徐松波彭胜张晋平李广波李云任萍房晓燕
Owner STATE GRID SHANDONG ELECTRIC POWER CO LAIZHOU POWER SUPPLY CO
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