I was trouble-shooting a control panel that had 3 small motor starters in it. Whenever I had two starters energized and brought in the third, the contactor would chatter or drop out all three contactors. The problem turned out to be that the 100VA transformer had a 1 amp KLD-R current limiting...
I am looking for a solution on how to safely heat an offshore drilling Motor Contol Room. Any ideas?
The room is pressurized to keep out explosive gas. In the event of a powerloss or shutdown (in which the room is no longer pressurized) I need to heat the inside of the motor control center...
I am trying to find documentation that talks about when to use a 4 pole circuit breaker. Is there a source that specifies the countries that still use a 5 wire power system(i.e. 3 phases, N, PE) that switches the neutral?
I would appreciate any help in this matter.
