Relay Curve Types...
Relay Curve Types...
(OP)
I'm doing an arc flash study using ETAP software. Under one of the relays models (Alstom) there is an option for ieee very inverse curves and iec very inverse curves! I understand that IEEE-VI and IEC-V has completely different trip time equations and hence the time current characteristics are different. How am I to know which to use?






RE: Relay Curve Types...
RE: Relay Curve Types...
RE: Relay Curve Types...