Power-frequency alternating-current withstand-voltage test device

Abstract

The invention relates to a power-frequency alternating-current withstand-voltage test device. The power-frequency alternating-current withstand-voltage test device comprises an electric voltage regulation unit, a high-voltage transformer unit, a control unit, a measurement display unit and a protection unit. The electric voltage regulation unit is connected with power-frequency alternating-currentcommercial power; the high-voltage transformer unit is connected with the electric voltage regulation unit; the control unit is in communication connection with the electric voltage regulation unit;the measurement display unit is in communication connection with the electric voltage regulation unit and the control unit; the measurement display unit comprises a measurement part and a display part; and the protection unit is connected with the electric voltage regulation unit and the high-voltage transformer unit. The control unit and the display part of the measurement display unit are integrated into a movable control panel; the electric voltage regulation unit, the high-voltage transformer unit, the protection unit and the measurement part of the measurement display unit are integratedinto an integrated test module; and the control panel is in communication connection with the integrated test module. According to the test device, the test complexity can be lowered, the test efficiency and the flexibility are improved, the test error is avoided, and the test safety is guaranteed.

Description

technical field [0001] The invention belongs to the field of electric test equipment, and in particular relates to a power frequency AC withstand voltage test device for performing an AC withstand voltage test on a vacuum circuit breaker. Background technique [0002] In the power system, the vacuum circuit breaker is the most important control and protection equipment. The AC withstand voltage test between the ports of the vacuum circuit breaker is actually a monitoring method to judge whether the vacuum degree of the vacuum interrupter meets the requirements. The most effective and direct test item for the dielectric strength of the device. At present, the devices for power frequency AC withstand voltage test of circuit breakers usually include test transformers, voltage regulating devices, overcurrent protection devices, voltage measuring devices, overvoltage protection, protection resistors and control devices, etc., and the key devices are test transformers, regulators,...

AI Technical Summary

Problems solved by technology

[0003] Although this type of split-type test device can meet the requirements of the power supply for the test, there are still some problems: (1) There are many test devices and accessories required on site, and the equipment is bulky and difficult to transport; (2) The field test wiring is relatively complicated. Too many, the wiring efficiency is low, and it is easy to cause wiring errors, which affects the test and equipment safety; (3) The flexibility of the test device is poor. In the case of a small test site, the safety distance of the withstand voltage test is not enough, and there are potential safety hazards for the test personnel

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