InteliATS
NT
STD, SW version 2.0, ©ComAp – June 2010
8
IA-NT- STD-2.0-Reference Guide.pdf
Open Delay Transition functional diagram.
.
H
:
INT
transition can perform fastest possible changeover if
Transfer Del
is set to zero value.
This
Overall blackout time then equals to 20 ms + breaker reaction time.
H
INT
:
Use longer delay time to avoid problems with motor starters. (Motor starts prefer to see break of a few
seconds so they can initialize properly).
H
INT
:
To avoid issues with contactor mechanical interlocks use delay 0.75s or longer (mech. interlock on
contactors takes some time to clear). If you try to close one contactor before interlock has cleared it
can jam and you end up with out supply to load).
