Measuring the insulation resistance can reveal defects such as moisture, arc burn and insulation cracks in the insulation rod of the oil circuit breaker. At the same time, it is also necessary to measure the insulation resistance between the fractures in the open state, and mainly check whether the arc extinguishing device inside the circuit breaker is damp or burned. In the state where the circuit breaker is powered off, the insulation resistance of the conductive parts of each phase to the ground is measured by a 2500V megohmmeter. The judgment method for the measurement method of the insulation resistance can be compared and analyzed according to the factory test standard or according to the operation condition of the equipment and the previous test results. For insulating rods made of organic materials, the joint test standard stipulates that the insulation resistance should not be lower than the values ​​in the table at normal temperature. If the insulation resistance in the open state is much higher than the insulation resistance in the closed state, it often indicates that the tie rod is damp. Portable Hotel Projector,home bedroom hotel projector,large banquet hotel projector Shenzhen Happybate Trading Co.,LTD , https://www.happybateprojectors.com
December 30, 2022