Entec EVRC2A-N6-NT - Loss of Phase - Option

RECLOSER CONTROL EVRC2A-N6,NT http://www.entecene.co.kr
207
ENHANCED TECHNOLOGY
7.19. Loss of Phase - Option
EVRC2A has a loss of phase element. The element is provided for trip, alarm and control when
loss of phase is occurred. Loss of Phase can be turned on and off by Primary and Alternate
settings and is an optional element depending on the specification of EVRC2A.
If any phase voltage of source side becomes 110% higher than Loss of Phase level and one or
two phases voltage keeps lower than Loss of Phase for a certain period, circuit breaker
determines Loss of Phase.
The loss of phase element in the following four settings should be enabled for loss of phase.
PRIMARY SETTING / PROTECTION / LOSS OF PHASE / 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 / LOSS OF PHASE / 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 / LOSS OF PHASE / Pickup(xVT)
Range
0.00 ~ 1.25
Default
0.30
Step
0.01
Enter the pickup value as a fraction of the secondary nominal voltage.
For example, if the secondary nominal voltage is 100V, and an alarm is
required whenever the voltage goes below 70V, enter(30/100) = 0.30 ×
VT for the pickup.
PRIMARY SETTING / PROTECTION / LOSS OF PHASE / Time Delay
Range
0.10 ~ 100.00 sec
Default
20.00
Step
0.01 sec
The time set-up is to delay time for loss of phase trip.
[LOSS OF PHASE]
Relays(0-8): OFF
Pickup(xVT): 0.30
>Time Delay: 20.00
[LOSS OF PHASE]
Function: OFF
Relays(0-8): OFF
>Pickup(xVT): 0.30
[LOSS OF PHASE]
Function: OFF
>Relays(0-8): OFF
Pickup(xVT): 0.30
[LOSS OF PHASE]
>Function: OFF
Relays(0-8): OFF
Pickup(xVT): 0.30