Suspension insulator and post insulator test items

The test items of suspension insulators and post insulators shall include the following:
Measure the insulation resistance of the insulator;
AC withstand voltage test of insulators.
The insulation resistance value of the insulator shall meet the following requirements:
The insulation resistance value of suspension insulators used for voltage levels of 330KV and below should not be less than 300MΩ; for suspension insulators used for voltage levels of 500kV, it should not be less than 500MΩ;
The insulation resistance value of post insulators with voltage levels of 35kV and below shall not be lower than 500MΩ;
Use Dingsheng Power DC2403 2500V insulation resistance tester to measure the insulation resistance value of insulators, which can be spot-checked at 10% of the same batch of products;
Rod insulators are not subject to this test;
The insulation resistance of the semiconductor glaze insulator meets the requirements of the product technical conditions.
The AC withstand voltage test of the insulator shall meet the following requirements:
Pillar insulators with voltage levels of 35kV and below can be carried out together after the busbar is installed. The test voltage should meet the requirements of the “Power Frequency Withstand Voltage Test Voltage Standard for High Voltage Electrical Equipment Insulation”;
The AC withstand voltage test value of 35kV multi-element post insulators should meet the following requirements:

① For two glued components, each component is 50kV;

② For three glued components, each component is 34kV.