Hi,

I have a data centre which contains about 30 UPSs. I am worried about electric shock risks for the fire brigade. Currently if the fire alarm is triggered to full fire and releases the extinguishant, it cuts the 250 Amp 3 phase supply off but all the UPS's then run on battery.

The UPSs have no EPO terminal as they are all about 1000-3000VA apart from a few 10KVA ones. I want to know what voltage I could get if I measure between the live on one UPS and the live on another. I heard somewhere that I could get up to 575V. If this is true, is there some way of keeping it down to 230V?

Thanks

I took my time, I hurried up, The choice was mine, I didn't think enough