Problems of Trip Circuit Breaker (Main Circuit Breaker is in position Trip.)
Date 28th Jun 2016
TDC check the electrical system for reasons.
Check in case of abnormalities in electric system as follows.
1. The electrical current exceeds the over size (AT) Amp.Trip Circuit Breaker.
Electric current is not exceeded.
2. The short-circuit currents (Short Circuit) in the electrical system.
Current circuit working normally.
3. The Ground Fault (short circuit currents to Earth).
Current circuit to earth for normal use.
4. The installation of Phase Protection Relay to prevent the Main Circuit Breaker.
o Phase Protection Relay: trip main circuit breaker order by Under
In which case, the Trip is as follows:
o Voltage power fall (Under Voltage Relay adjustable 5-20% of normal pressure).
Report corrections system
1. To set up the working time of phase protection Relay from 5 seconds to 8 seconds.(The normal function of standard 5-8 seconds, which should not be a moment more pressure will affect the power system in the factory).
2. Adjust under voltage relay from 5% to 10%