InteliMains
NT
, SW version 3.2.0
InteliMains-NT-MCB-MGCB-3.2.0-Reference Guide.pdf, ©ComAp – April 2015
7.6.3.2.2 Handover DOWN Swap sequence
The handover DOWN sequence describes the opposite situation. The gen-set with higher nominal
power is swapped by the gen-set with lower nominal power. The gen-set with higher nominal capacity
is stopped once the sequence is over. The stopped gen-set is in ready state and keeps available in
power management.
Power [kW]
Sum of available nominal
power – running gen-sets
in PM
Load
Level of Load reserve stop
Setpoint #LoadResStop X
Nom G1
Time
Nom
G1+G2
Time
Gen 2
#NextStop del
Start
Stabilization
Synchronization
Soft loading
Gen 1
BO Syst res OK
Ready
Soft unloading
GCB opened
Loaded
Nom G2
#PwrBnChngDlDn
#NextStrt del
*Cooling
#NextStop del*
Sum of available nominal power – running gen-sets in PM*
*Soft unloading
GCB opened
NOTE:
If the power band change delay Pwr management: #PwrBnChngDlDn is adjusted to that longer value
than total time requiring start of other gen-set, stabilization, synchronization, GCB closing and soft
loading, it postpones the soft unloading of the gen-set to be stopped. This delay is depicted by the
dashed orange line. Consequently, the handover down swap sequence is postponed by this delay.
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