ComAp IG-NT Reference Manual page 89

Range [units] NONE, FORWARD, REVERSE, BOTH [-]
Related FW 3.0
Force value YES
possible
Description The setpoint is used for enable/disable forward and reverse synchronization.
N
OTE
Although synchronizing of the particular breaker is disabled the breaker can be
closed to a "dead" (voltage-free) bus.
N
OTE
See table with examples in the description of the setpoint
Setpoint: #Neutral cont
Group Process control
Range [units] EACH, COMMON [-]
Related FW 3.0
Description The setpoint is used for adjusting the behavior of the
according to actual site wiring.
The neutral contactor is used to connect the neutral wire (N) with the protective
wire (PE) in a TN-S system. This connection must exist in one moment at one
point of the circuit only.
The EACH option should be used if each gen-set has it's own neutral contactor.
Four-pole GCB must be used for this case.
Inteli NT MINT, SW Version 3.0, ©ComAp –May 2013
IGS-NT-MINT-3.0 Reference Guide.PDF
NONE: No synchronizing is enabled.
FORWARD: GCB synchronizing is enabled.
REVERSE: MCB synchronizing is enabled.
BOTH: GCB and MCB synchronizing are enabled.
:
:
The output is always opened while the gen-set is not running.
The output is always opened while the MCB is closed.
While the gen-set is running and GCB is open, the output closes when
generator voltage in at least one phase exceeds 85% of the nominal
voltage. It opens when the generator voltage in all phases drops below
50% of the nominal voltage.
While the gen-set is running, MCB is open and GCB is closed, then the
position of the output is given by an internal algorithm, which ensures, that
always exactly one gen-set connected to the bus has the neutral contactor
closed.
N :
OTE
Functional CAN2 communication between the controllers is required for
this function.
MFStart enable.
Neutral CB C/O output
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