InteliATS
NT
PWR, SW version 1.0, ©ComAp – March 2009
51
IA-NT- PWR-1.0-Reference Guide R1.pdf
Relation between GCB and MCB
Conditions: AUTO Mode, Mains =off, MCB = opened, GCB = closed, gen-set loaded.
Mains returns: GCB opens (according 3.,
MainsReturnDel
), MCB closes (
Transfer Del
)
GCB opened
MCB closed
Transfer Del
Relation between GCB and MCB (Test mode)
Situation 1
: Mains =OK, MCB = closed, GCB = opened, RPM=0.
Change mode to TEST: gen-set starts, GCB = opened.
Mains cut: MCB opens (according 1.), GCB closes (
Transfer Del
)
Situation 2
:
ReturnFromTEST
=MANUAL, Mains =OK, MCB is closed, gen-set is running.
Press MCB on/off -> MCB opens, GCB closes (
Transfer Del
), gen-set is running loaded.
MCB opened
GCB closed
Transfer Del
