General technical requirements for high voltage electrical tests test procedure

General technical requirements for high voltage electrical tests test procedure

General requirements for electrical testing

The preventive test of electrical equipment is an important measure to judge whether the equipment can continue to be put into operation, prevent the damage of the equipment and ensure the safe operation. All power preventive tests shall be carried out in accordance with the requirements of the "Preventive Test Regulations for Electrical Equipment".

1, the provisions of the "Electrical equipment preventive test procedures" are the basic requirements of the inspection equipment, should be carefully implemented. Adhere to prevention and actively improve the equipment, so that the equipment can be long-term. Operate safely and economically;

2, adhere to the scientific attitude, the test results must be comprehensively analyzed, master the law and trend of equipment performance changes, to strengthen technical management, improve the data file, and constantly improve the test level.

3, the rated voltage of the electrical equipment below 110kV, should be in accordance with the "electrical equipment preventive test regulations" AC withstand voltage test. For power transformers and transformers, voltage withstand tests should be carried out after partial and full winding replacement.

4, insulation test, should try to separate the various equipment connected together separate test, the same test standard for the new can be checked a supervisor test. For the equipment can be connected together to test. Independent test records of a number of unified test standards of electrical equipment, in the individual test is difficult, can be connected together test at this time, the test standard should be used equipment standards.

5. When the rated voltage of the test equipment is different from the rated operating voltage actually used, the standard of the test voltage should be determined according to the following principles:

(1) When using electrical equipment with higher rated voltage to strengthen insulation, it should be tested according to the rated voltage standard of the equipment;

(2) The use of electrical equipment with higher rated voltage, when it has met the requirements of product versatility, it should be tested according to the standard of the rated working voltage actually used by the equipment;

(3) Electrical equipment with higher voltage levels, when meeting the requirements of high altitude or dirty areas, should be tested in accordance with the actual working voltage standards at the installation site.

6, when conducting various electrical tests related to temperature and humidity, the temperature and humidity of the subject and the surrounding air should be measured at the same time. Insulation tests should be carried out in good weather.
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