i have 2 logs of a motor shut down one tripping the main breaker and one not. is there anyone here that can view power log 2.9 files and give me some input?
i have 2 smc-flex soft starters running 350 hp motors at a water lift station. the main 1600a incoming breaker is tripping when one of the motors is shut off. sometimes it trips sometimes it doesn't. i finally got the use of a fluke 435 power quality meter and was able to record the main when it...
I have 2 350 hp 480v motors running vertical turbine pumps.
they are controlled by allen-bradley SMC -FLEX soft starters.
The station has a 1600a main breaker and each soft start is fed by a 600a breaker.
The soft starts were set for a 15 second stop time. When a pump is stopped it decelerates...
We had a pump station rebuilt last fall. The Plant manager decided to shut power to the building off during the winter.
Two circuit breakers in the mcc had problems upon start up last week. One of the breakers started working after the handle was operated many times. The other breaker was...
i have an overload for a well pump that acts up in the spring. its a stainless steel enclosure outside. there are three motor starters in the cabinet but only one acts up. It is set at 13.5 amps and the motor draws about 12.4 amps.Last spring i replaced the overload relay thinking condensation...
