The parameters for the XENCPOW function are set via the local HMI or PCM600.
The common base IED values for primary current IBase and primary voltage
UBase are set in the global base values for settings function GBASVAL.
GUID-5A5D3D3B-1BD2-43FE-B07C-587DBAF1AF9B v2
GlobalBaseSel
: This setting is used to select the GBASVAL function for the
reference of base values.
Operation: On or Off.
ULowLimit: This setting is used to set the voltage range where the transformer can
be energized without looking the voltage peak once the START input is activated.
The typical setting is 20 % of UBase.
UHighLimit: This setting is used to set the voltage range where the transformer
should not be energized even when the START input is activated. The typical
setting is 120 % of UBase.
tBreaker: It should be set to match the total closing time of the circuit breaker and
it should also include possible auxiliary relays in the closing circuit. A typical
setting is 80-150 ms.
tPulse: This setting is used to set the close command pulse duration. The setting
must be grater than the critical impulse time of the circuit breakers to be closed
from the transformer energizing control function. The typical setting is 200 ms.
12.12.3.1 Setting examples
GUID-82CDBB9C-1150-4706-951A-17A143E725C3 v1
Refer to the transformer manufacturer’s operating requirements for the UHighLimit
and ULowLimit settings.
Refer to the transformer circuit breaker manufacturer’s operating requirements for
the tBreaker and tPulse settings.
Section 12 1MRK 506 375-UEN A
Control
342 Railway application RER670 2.2 IEC
Application manual
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