Research On Detecting Abnormal Operation Caused By Excessive Friction Of High-voltage Disconnectors

Based on the test results of the high voltage isolator spring design, the operator's refusal to engage was ruled out as a result of incorrect parameters or altered characteristics of the high voltage isolator switch spring. So, what caused the hv isolator refusal to engage? Subsequently, field measurements were conducted on the non-operating A and B model hv isolator switch, based on the high voltage electrical isolator design parameters, to determine whether excessive friction within the isolator high voltage chamber was causing the abnormal operation.