Epoxy Bushing Pressure Test

epoxy bushing is a bushing used for insulation of electrical equipment. To ensure its insulation performance, a withstand voltage test is required. Here is some information about the withstand voltage test of epoxy resin bushing:

1. Test purpose: The purpose of the withstand voltage test is to evaluate the voltage level that epoxy resin cast bushing can withstand under normal working conditions to ensure that it can be reliably insulated in electrical equipment.

2. Test equipment: Special withstand voltage test equipment is required for the withstand voltage test, including high voltage generator, voltmeter, ammeter and timer, etc.

3. Test method: Install epoxy bushing for transformer in the test equipment and connect the output end of the high voltage generator to epoxy bushing manufacturer. Gradually increase the voltage while observing the indications of the voltmeter and ammeter to ensure that the insulating bushing does not break down or leak under the test voltage.

4. Test standard: Determine the test voltage and test time of the insulating bushing according to relevant standards and specifications. In general, the test voltage should be a certain multiple higher than the normal working voltage of the insulating bushing, and the test time is usually several minutes.

5. Test results: According to the test results, it can be judged whether the withstand voltage performance of the insulating sleeve meets the requirements. If the insulating sleeve does not break down or leak under the test voltage, and the current is stable during the test time, it means that its withstand voltage performance is good.

When conducting the withstand voltage test of the insulating sleeve, the relevant standards and specifications should be strictly followed to ensure the safety and accuracy of the test. At the same time, the insulating sleeve that fails the test should be replaced or repaired in time to ensure the safe operation of the electrical equipment.