ABB Relion 670 Series Product Manual page 81

Bay control REC670
Version 2.2
Table 53. Average Power Transient Earth Fault Protection APPTEF
Function
Minimum operate level for residual
overvoltage 3Uo> start condition "UN>"
Reset ratio for residual overvoltage 3Uo>
Operate time for residual overvoltage
3Uo>
at 0 to 2 x U
set
Minimum threshold level for residual
overcurrent start condition "IN>"
Minimum operate level for integrated
current to declare the forward direction
"IMinForward"
Minimum operate level for integrated
current to declare the reverse direction
"IMinReverse"
Minimum time delay to declare EF
direction "tStart"
Minimum trip time delay "tTrip"
Minimum pulse length duration for trip
and/or start outputs "tPulseMin"
Operate 3Io current level for cross country
fault detection "CrossCntry_IN>"
Time delay to activate cross country fault
detection "tCC" at 0 to 2 x I
Drop off time delay to de-activate cross
country fault detection at 2 x I
Operate 3Io current level for circulating
current detection "Circulate_IN>"
Time delay to activate circulating current
detection "tCircIN" at 0 to 2 x I
Drop off time delay to de-activate
circulating current detection at 2 x I
Hitachi Power Grids
GUID-BCCA5F2D-9FF7-4188-9B5D-DA05E8E80CC0 v1
Range or value
(5-80)% of UBase
> 75%
Min. = 5 ms
Max. = 15 ms
(3-100)% of lBase
(2.0-100.0)% of lBase
(2.0-100.0)% of lBase
(0.04-2.00) s
(0.00-20.00) s
(0.02-1.00) s
(20-1000)% of lBase
(0.02-1.00) s
set
Fixed 0.2 s
to 0
set
(2-200)% of lBase
(5.0-60.0) s
set
Fixed 0.5 s
to 0
set
© Copyright 2017 Hitachi Power Grids. All rights reserved
Accuracy
±0.5% of Ur
-
-
±1.5% of Ir
±1.5% of Ir
±1.5% of Ir
±0.2% or ±25 ms whichever is greater
±0.2% or ±25 ms whichever is greater
±0.2% or ±10 ms whichever is greater
±1.0% of Ir at I ≤ Ir
±1.0% of I at I > Ir
±0.2% or ±25 ms whichever is greater
±0.2% or ±25 ms whichever is greater
±1.0% of Ir at I ≤ Ir
±1.0% of I at I > Ir
±0.2% or ±25 ms whichever is greater
±0.2% or ±25 ms whichever is greater
1MRK 511 404-BEN N
81