We have a 600V 3 phase 500 KVA motor generator set. I need to do a calc to determine how much this unit loads the A/C system for this building. I have all the electrical data for the motor and sychronous generator. Where can I find guidance on how to do this calc?
I am reviewing vendor data on the inductive and resistive ratings of pressure switch contacts for dc application. The table gives an L/R ratio of .026, time to reach 63% of current peak value. How is the L/R ratio used in applying such contacts?
I am adding a new pressure switch to operate a close coil for a 4 kV breaker. The coil is rated 6 amps at 125 VDC. One switch that I am considering is rated at 10 amps resistive, 5 amps inductive at 125 VDC. The switch will pick up the close coil typically 3-4 times per month. A seperate...
