Overhaul & Repair

1. The disconnector should be inspected regularly 1-2 times a year to check whether the contact part of the disconnector knife and contact is overheated and red oxidation marks, and eliminate the correction, and then apply petroleum jelly oil 2. Check the signal circuit and mechanism, check whether the signal contacts and mechanism parts are damaged, and replace them immediately if they are damaged 3. Check whether the pillar porcelain bottle of the isolation switch is in good condition, and replace it immediately if it is damaged 4. The disconnector must be operated only after the load on the line has been cut off and the circuit breaker has tripped 5. When there is no circuit breaker on the line or the circuit breaker fails, the disconnector is allowed to be divided and closed under the following conditions: (1) Divide and close the voltage transformer for measurement (2) Divide and close the charging current on the bus equipment (3) Divide and close the no-load current of the power transformer