ComAp IS-NTC-BB

IGS-NT Combi, SW Version 3.0, ©ComAp – May 2013
IGS-NT-Combi-3.0 Reference Guide.PDF
167
Setpoint: Mains >f
Group
Mains protect
Range [units]
Mains <f .. 150.0 [%]
Related FW
3.0
Force value
possible
YES
Description
This setpoint adjusts the threshold level for the mains overfrequency protection.
The threshold is adjusted in % of the system frequency (Nominal Freq + Nom frq
offset).
The protection activates if the frequency in phase L3 gets over the threshold for
time longer than Mains f del.
NOTE:
The asociated protection to this setpoint is Mains protect type. This type of
protection is recorded into the history file, however it is not indicated in the Alarm
list. When a protection of Mains protect type occurs the controller opens either
MCB (in applications where the MCB is controlled) or GCB (in applications where
the MCB is not controlled).
Setpoint: Mains <f
Group
Mains protect
Range [units]
50.0 .. Mains >f [% of system frequency (Nominal Freq + Nom frq offset) ]
Related FW
3.0
Force value
possible
YES
Description
This setpoint adjusts the threshold level for the mains underfrequency protection.
The threshold is adjusted in % of the system frequency (Nominal Freq + Nom frq
offset).
The protection activates if the frequency in phase L3 drops under the threshold for
time longer than Mains f del.
NOTE:
The asociated protection to this setpoint is Mains protect type. This type of
protection is recorded into the history file, however it is not indicated in the Alarm
list. When a protection of Mains protect type occurs the controller opens either
MCB (in applications where the MCB is controlled) or GCB (in applications where
the MCB is not controlled).
Setpoint: Mains f del
Group
Mains protect
Range [units]
0.00 .. 600.00 [s]
Related FW
3.0
Description
The setpoint adjusts the delay for mains under- and overfrequency protections.
The thresholds for these protections are adjusted by setpoints Mains >f and Mains
<f.