• Insulator sealing test machine

    This machine is mainly used to test the tightness and internal pressure of the insulation bushing. SF6 is injected into the bushing as the pressure medium, and 0 is applied to the test product.A pressure of 25×SIP, using a leakage meter (accuracy of about 10-1×10-6) to measure the gas leaking from the sample to the tank, this measurement should be continued for at least 1h after a stable period of leakage rate of at least 4h, leakage rate should be given as a percentage of volume/year。