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RECLOSER CONTROL EVRC2A-N6,NT
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146
EN
HANCED
TEC
HNOLOGY
7.8. Negative Sequence High Current Trip (46(50)-1)
The negative sequence high current trip in the EVRC2A is set based on CT secondary current as
connected to the current inputs. The negative sequence high current trip element provides a
definite time delay versus current.
The operating time of negative sequence high current trip element should be set equal to or faster
than the negative sequence time overcurrent elements. The negative sequence high current trip
element is enabled in the Primary, Alternate settings and
[PROTECTION]
on user interface
panel.
The negative sequence high current trip is not affected by the cold load pickup scheme.
The ground high current trip element in the following five settings should be enabled for
negative sequence high current trip.
PRIMARY SETTING / PROTECTION / H/C TRIP-NEQ / 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 TRIP-NEQ / Relays(0-8)
Range
OFF, 0 ~ 8
Default
OFF
Step
1
Selects the required relays to operate when the feature generates a Trip.
PRIMARY SETTING / PROTECTION / H/C TRIP-NEQ / Pickup(A)
Range
10 ~ 20000 A
Default
4000
Step
1A
Set the pickup current of Negative Seq. High Current Trip Element.
This value is the minimum operating current of Negative Seq. High
Current Trip Element.
[ H/C TRIP-NEQ ]
Function: OFF
Relays(0-8): OFF
>Pickup(A): 4000
[ H/C TRIP-NEQ ]
Function: OFF
>Relays(0-8): OFF
Pickup(A): 4000
[ H/C TRIP-NEQ ]
>Function: OFF
Relays(0-8): OFF
Pickup(A): 4000