Proximity Control Position On-off
Proximity control Position On-off 1. Common faults of capacitors. Turn off the power immediately when one of the following conditions is found for the capacitor. (1) The capacitor casing expands or leaks oil. (2) The casing is broken, and a flashover occurs. (3) The internal noise of the...
Proximity control Position On-off
1. Common faults of capacitors. Turn off the power immediately when one of the following conditions is found for the capacitor.
(1) The capacitor casing expands or leaks oil.
(2) The casing is broken, and a flashover occurs.
(3) The internal noise of the capacitor is abnormal.
(4) The temperature of the outer casing rises above 55 °C and the temperature piece falls off.
2, capacitor fault handling
(1) When the capacitor explodes, immediately turn off the power and use a sand and dry fire extinguisher to extinguish the fire.
(2) When the fuse of the capacitor is blown, report to the dispatcher and pull off the circuit breaker of the capacitor after obtaining the consent. Disconnect the power supply and discharge it. Perform external inspection first, such as whether there is any flashover on the outside of the casing, whether the casing is deformed, whether the oil leakage and grounding device are short-circuited, etc., and shake the insulation resistance between the pole and the pole to ground. Value, check whether the capacitor bank wiring is complete and firm, whether there is a phase loss phenomenon. If no fault phenomenon is found, it can be replaced after insurance. If the fuse is still blown after power transmission, the faulty capacitor should be exited and the rest of the power should be restored. If the circuit breaker also trips while the fuse is blown, it cannot be forced at this time. It is necessary to re-invest after the above inspections have been completed and replaced with insurance.
(3) The breaker of the capacitor trips, and the shunt insurance is not broken. The capacitor should be discharged for three minutes, then the current transformer power cable and the capacitor externally. If no abnormality is found, it may be due to external fault bus voltage fluctuations. After inspection, you can test it; otherwise, you should further protect the comprehensive power-on test. Through the above inspections and tests, if you still can't find the reason, you need to follow the system and gradually test the capacitors. Do not vote before you find out the cause.