Parameter
Range
Default
Notes
Away
:
Protected
object
S1
S2
CT - ACM3.2 - Neutral side
Configure these parameters under
Configure > Parameters > [Source] > AC setup > CT - ACM3.2 - Neutral side
. These
parameters are only visible if you have an ACM3.2 installed.
More information
See the
Installation instructions > Default wiring for the optional modules > ACM3.2 terminal connections and
default wiring
for examples of generator current transformer wiring.
Parameter
Range
Default
Notes
Primary
5 to 9000 A
1000 A
The current transformer primary side nominal current for terminals 7 to
12.
Secondary
1 or 5 A
1 A
The current transformer secondary side nominal current for terminals 7
to 12. You can select either 1 A or 5 A.
Current
reference dir.
•
Towards prot. obj.
•
Away from prot.
obj.
Towards prot.
obj.
Defines if the current transformer direction is installed towards or away
from the protected object for terminals 7 to 12.
Towards
:
Protected
object
S2
S1
Away
:
Protected
object
S1
S2
Voltage and frequency OK
Configure these parameters under
Configure > Parameters > [Source] > AC setup > Voltage and frequency OK
.
The controller uses these parameters to calculate whether the voltage and frequency from the source measurements are OK, so
that the breaker can close.
Parameter
Range
Default Notes
Voltage and frequency
OK
0 s to 1 h
2 s
If the voltage and frequency are OK for this time in seconds, then the equipment's
LED becomes steady green. The breaker is not allowed to close before the LED
is steady green (that is, not flashing).
Minimum OK voltage
70 to 100 %
95 %
The voltage must be above this voltage (as a percent of nominal voltage) for the
breaker to start to synchronise and close.
Maximum OK voltage 100 to 120 % 105 %
The voltage must be below this voltage (as a percent of nominal voltage) for the
breaker to start to synchronise and close.
Minimum OK
frequency
70 to 100 %
99 %
The frequency must above this frequency (as a percent of nominal frequency) for
the breaker to start to synchronise and close.
Maximum OK
frequency
100 to 110 % 101 %
The frequency must below this frequency (as a percent of nominal frequency) for
the breaker to start to synchronise and close.
Voltage and frequency OK (blackout start)
For the GENSET, EMERGENCY genset, SHAFT generator and/or SHORE connection controller, configure these parameters under
Configure > Parameters > [Source] > AC setup > Voltage and frequency OK (blackout start)
.
DESIGNER'S HANDBOOK 4189340911K UK
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