Transfer switches

1410build02pASCO 7000-series automatic transfer switch and bypass-isolation transfer switch lines include a 30-cycle rating of 600 to 1,200 A. The rating has a withstand close-on rating (WCR) of 30 kA at 480 V, its ability to withstand and close-on short circuit currents with a specific type of over-current protective device, or for a finite time period. At 30 cycles, the time period is typically 0.5 sec. at 60 Hz. The rating allows the switches to be specified for large, complex projects where the fault current on the emergency system is high.
Emerson Network Power, Florham Park, NJ
website    free information

Comments are closed.