RECLOSER CONTROL EVRC2A-N6,NT
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8.2. Synchronism Check (25)
EVRC2A provides the manual close for the synchronism check element that synchronism
voltages are within the programmed differentials of voltage magnitude, phase angle position, and
frequency.
If this feature is enabled, the synchronism check will be performed before local/remote close
with the exception of automatic reclose for fault.
When either or both of the synchronism check voltages are de-energized, the synchronism check
can allow for local/remote close.
If EVRC2A is the type of VD, the synchronism check voltage input VL is connected to load
side(VR phase) in recloser. The other synchronizing phase can be connected for phase-neutral
voltage Vr, Vs or Vt; for phase-phase voltages Vab or Vcb. on load side in recloser.
The synchronism check element in the following settings should be enabled.
PRIMARY SETTING / MONITORING / SYNCHROCHECK / Function
Range
OFF, ALARM
Default
OFF
Step
~
If function = OFF,
the feature is not operational.
If function = ALARM,
the feature is operational.
PRIMARY SETTING / MONITORING / SYNCHROCHECK / Relays(0-8)
Range
OFF, 0 ~ 8
Default
OFF
Step
1
Selects the relays required to operate when the feature generates an
Alarm.
PRIMARY SETTING / MONITORING / SYNCHROCHECK / D.V.Max(xVT)
Range
0.00 ~ 1.25
Default
0.50
Step
0.01
Enter the dead line maximum voltage for synchronism check.
Used to Prevent the synchronism check element for voltage below this
level.
[SYNCHROCHECK]
Function: OFF
Relays(0-8): OFF
>D.V.Max(xVT): 0.50
[SYNCHROCHECK]
Function: OFF
>Relays(0-8): OFF
D.V.Max(xVT): 0.50
[SYNCHROCHECK]
>Function: OFF
Relays(0-8): OFF
D.V.Max(xVT): 0.50