High-voltage transformer test protection device with multi-protection function

Abstract

The invention relates to a high-voltage transformer test protection device with a multi-protection function. The high-voltage transformer test protection device is respectively connected with an infrared radiation alarm device, an over-current protection device and a high-voltage transformer test control power supply. The high-voltage transformer test protection device comprises a leakage protection air switch, an overall power access circuit, a grounded detector, a transformer, an enable signal converter, an alternating current contactor and a voltage regulator, wherein the leakage protection air switch, the overall power access circuit and the grounded detector are sequentially connected; the grounded detector is respectively connected with the enable signal converter, the alternating current contactor and the transformer; the alternating current contactor is connected with the transformer; and the enable signal converter controls the switching-off or switching-on of the alternating current contactor according to enable signals of the infrared radiation alarm device, the over-current protection device and the grounded detector. Compared with the prior art, the high-voltage transformer test protection device improves test safety and reliability and has the multi-protection function.

Description

Technical field [0001] The invention relates to a test auxiliary device for a transformer, in particular to a high-voltage transformer test protection device with multiple protection functions. Background technique [0002] At present, the transformer verification systems used by various domestic transformer manufacturers, the State Grid Corporation and the State Technical Supervision Department all adopt manual wiring and automatic measurement methods. Due to the large number of transformer testing items, multiple sets of different equipment are required for verification. Manual connection and disconnection during these verifications takes a lot of time, which has become the main bottleneck for improving the efficiency of transformer verification. In order to improve the verification efficiency, the automated transformer calibration laboratory has been widely used. According to the requirements of "Electrical Industry Safety Work Regulations", during the on-site verification of...

AI Technical Summary

Problems solved by technology

The test area of ​​the transformer laboratory is decorated with closed plexiglass, and the flow of personnel is large; the withstand voltage test of the transformer laboratory and the verification of high-voltage transformers are all high-voltage operations, which leads to the following problems:

[0003] 1. Although there are safety barriers and signs installed, people often enter the test area by mistake, causing the device to shut down abnormally, resulting in many equipment failures, resulting in safety accidents, and there are great safety hazards;

[0004] 2. When the transformer verification device breaks down, the maintenance technicians of the manufacturer cannot be on call for repairs throughout the country, resulting in a long maintenance cycle and often delaying the verification time limit of the transformers sent by customers for inspection

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