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Impulse voltage endurance test method

A test method and impact withstand voltage technology, which is applied in the direction of power supply test and dielectric strength test, can solve the problem that the withstand voltage capacity cannot be effectively tested, and achieve the effect of improving efficiency and ensuring safety performance

Active Publication Date: 2011-01-12
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the withstand voltage capability of each live circuit in the above UPS system cannot be effectively tested, and to provide an effective test method for testing the withstand voltage capability of each live circuit in the UPS system

Method used

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  • Impulse voltage endurance test method

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Embodiment Construction

[0011] The present invention will be described in further detail below.

[0012] An impulse withstand voltage test method is as follows: Impulse voltage is applied to the test site (between the live circuits that are not electrically connected, between each independent live circuit and the ground (metal frame), the DC busbar and the voltage busbar in the cabinet, When all other connecting branches are disconnected (between ground and ground), other circuits and exposed conductive parts are connected together to ground. With the test voltage specified in Table 1 below, add 3 times of positive and 3 times of negative lightning wave short-duration impulse voltage, and the interval time between each time should not be less than 5s. There should be no insulation breakdown and flashover during the test. After the test, the equipment should have no breakdown discharge.

[0013] Table 1

[0014]

[0015] This impulse withstand voltage test method is applicable to UPS systems in ...

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Abstract

The present invention relates to an impulse withstand voltage testing method of UPS system, wherein the impulse withstand voltage testing method comprises the following steps: loading an impulse voltage on a tested part, connecting and earthing the other circuits and the exposed conductive part, exerting short-time impulse voltage of three positive and three negative lightning waves with each slot time not less than 5s. The tested UPS system is qualified if no insulation breakdown or flashover phenomena of device occur in the testing course and no disruptive discharge occurs after testing. Asthe adopted technical settling plan totally settles the problem of over pressure resistance of each electrified loop in the tested UPS system and remarkably increases the efficiency for testing the pressure resistance of each electrified loop in the UPS system thereby more effectively guaranteeing the safety performance of UPS system.

Description

technical field [0001] The invention relates to a method for testing technical indicators of a UPS system, in particular to a method for testing an impulse withstand voltage test method for a UPS system of a substation with a voltage level above 220kV or a UPS system for a substation with a voltage level below 220kV. Background technique [0002] The AC uninterruptible power supply provided by the UPS system should have high voltage and frequency stability, small waveform distortion, low noise and strong anti-interference ability. Therefore, it is necessary to test the AC uninterruptible power supply provided by the UPS system. The withstand voltage capability of each live circuit in the UPS system is the guarantee of the safety of the UPS system. However, there is currently no effective method for testing the withstand voltage capability of each live circuit in the UPS system. Contents of the invention [0003] The purpose of the present invention is to solve the proble...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/40G01R31/42G01R31/12
Inventor 杨建平葛剑飞祁智敏孙照宇
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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