34
Load Break Switch Control
ERT-200S
5.2.4.
Fault Indication
In case of Permanent or Instantaneous fault, corresponding LED is ON. LED lamp can be off by manually
from local by pressing FI Reset button or from remote by sending a signal. Otherwise, LED lamp will
be on although H.V. line becomes normal.
5.2.5.
Line Status Indication
Phase
Fault
Indicator LED
Phase A,B,C Unbalance are indicated.
Under condition that source side and load side are all live line and switch is
open status, check angles, if it meets then, it is OK, otherwise, it is unbalanced.
Although it is unbalanced, control is still available. Operator shall decide an
operation.
Phase
Voltage
Indicator (LiveLine
LED)
Source side and load side live line status are indicated.
More than one phase voltage is higher than an Off Level of
Disconnect line/Open phase, it is Live line. And all 3 phases are less than that,
it is Dead line. Operator shall decide an operation.
SEF(Enable/Disabl
e)
When LED is ON, SEF is enabled. When LED is OFF, SEF is disabled. Although
SEF is enabled, Protection is not enabled, SEF is not activated.
SYNC. FAILED LED
WhenLEDison,
ThephaseangledifferencebetweenSource-sidevoltage(Va)and
Load-
sidevoltage(Vr)isoverthesetvalue.Inthiscase,Closecontrolcommandshouldbeinhi
bited.
REVER
POWER
LED
In reverse current case, the REVER POWER lamp becomes On.
Содержание ERT-200S
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