RECLOSER CONTROL EVRC2A-N6,NT
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7.9. Phase High Current Lockout (50P-2)
The EVRC2A has a phase high current lockout element. The phase high current lockout element
in the EVRC2A is set based on CT secondary current as connected to the current inputs. The
phase high current lockout element provides a definite time delay versus current.
When high current lockout element is enabled, high current lockout element is operated prior to
any other phase protection elements. If a fault current is higher than the pickup setting value,
Lockout is operated.
The phase high current lockout element can be set by a number of its active trip that is applied to
the full operation to lockout, time delay and fault current.
This function is very useful to prevent widespread line faults due to reclosing operations in case
of permanent fault.
The operating time of phase high current lockout element should be set for equal to or faster than
and phase high current trip element. The phase high current lockout element is enabled in the
Primary, Alternate setting and
[PROTECTION ENABLED]
in user interface panel.
The phase high current lockout element is not affected by the cold load pickup scheme.
The phase high current lockout element in the following five setting should be enabled for phase
high current trip.
PRIMARY SETTING / PROTECTION / H/C LOCKOUT-PHA / Function
Range
OFF, TRIP, TR&AR
Default
OFF
Step
~
If function = OFF,
the feature is not operational.
If function = Trip,
the feature is operational. When the feature asserts
a TRIP condition, Trip operates.
If function = Trip & AR,
the feature is operational. When the feature
asserts a TRIP & AR condition, it trips and alarms.
PRIMARY SETTING / PROTECTION / H/C LOCKOUT-PHA / Relays(0-8)
Range
OFF, 0 ~ 8
Default
OFF
Step
1
Selects the required relays to operate when the feature generates a Trip.
[ H/C LOCKOUT-PHA ]
Function: OFF
>Relays(0-8): OFF
Pickup(A): 8000
[ H/C LOCKOUT-PHA ]
>Function: OFF
Relays(0-8): OFF
Pickup(A): 8000
Summary of Contents for EVRC2A-N6-NT
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