I have 800 Amps MG Fix type breaker It is in on line & it
has been given only UV (under voltage)coil connection for
tripping purpose.now it is not working properly means its
getting tripp so how can i replace it or how can i rectify
the problem without destrubing my load??????????
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Answer Posted / karthik
Check with the wiring diagram of the panel and connect the
two wires going to the relay trip coil to a constant
supply.then remove the relay.
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HELLO EVERYONE, I RECENTLY HAVE FOUND ONE PROBLEM, I WAS TAKING NO LOAD TRIAL OF AN HT MOTOR 920 MOTOR , 1440 RPM , 6.6 KV, WITH AUTO TRANSFORMER. AT 450 V, LOAD WAS 40 AMP AND SPEED WAS 250 RPM. BUT AS WE INCREASE VOLTAGE FROM 450 TO 480V, LOAD BECOME 41 AND SPEED REDUCED TO SOME RPM . SO WHICH PHENOMENON ACTED HERE FOR REDUCING SPEED.?? AND IS IT HAPPENING ALWAYS OR IT IS RARE? I ALSO HAVE FACED SUCH PROBLEM WITH FEW LT MOTOR ALSO.
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