Hi All.
Can any one help is there any articles written on cable selection to reduce voltage drop in supply cables to a large 3 phase motor i.e. 250 Kw 4 pole 415 volt 50/60 Hz i.e. to help reduce the voltage during a fully loaded start
(basic rules & guide lines)
I have an MG masterpact 2000 amp 415 volt 50 Hz 3 pole circuit breaker fitted with a STR 58U trip unit. The unit was carrying about 1000-1200 amps at the time of the trip?
It is a stand-alone unit with no external trip circuits.
It has tripped on several occasions with no apparent cause.
The...
I have been asked a question on motor rotation dose anyone know of a test the can tell the direction a motor will rotate when it is conected to a 3 phase supply with a known phase rotation (motor leads not marked)the question was asked to aviod starting large drive the wrong direction when...