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1.7
Line differential protection, phase segregated
(DIFL)
Path in local HMI-tree: Configuration/TerminalCom/RemTermCom
Table 72:
Setting parameters for remote terminal communication
Parameter
Range
AsymDelay
0.00 - 5.00
Step: 0.01
Path in local HMI-tree: Configuration/DiffFunction
Table 73:
Setting parameter for synchronisation of the local clocks
Parameter
Range
DiffSync
Master,
Slave
Technical data
Table 74:
DIFL - Line differential protection, phase segregated
Function
Current scaling, CTFactor
Minimum operate current, IMinOp
Slope 1
Slope 2
Slope 1/Slope 2 intersection
Slope at saturation
Saturation min current
Function
Operate
I
> 2 x I
and I
diff
bias
time
x IMinOp
Reset time at I
= 0
diff
Transfer trip operate time
Default
Unit
0.00
ms
Default
Unit
Master
-
Setting range
(0.40-1.00) in steps of 0.01
(20-150) % of (CTFactor x I
of 1%
(20-150) % of I
in steps of 1%
bias
(30-150) % of I
in steps of 1%
bias
(100-1000) % of (CTFactor x I
steps of 1%
1.60 x I
bias
(100-1000) % of (CTFactor x I
steps of 1%
Value
>4
Typical 28 ms
diff
Max 55 ms
Max 35 ms
Chapter 4
Line differential protection
Description
Asymmetric delay for line differential
Description
Select if the terminal shall be Master
or Slave
Accuracy
-
± 10% of I
at I ≤ I
) in steps
r
r
± 10% of I at I >I
± 5%
± 5%
± 10% of I
at I ≤ I
) in
r
r
± 10% of I at I>I
± 5%
± 10% of I
at I ≤ I
) in
r
r
± 10% of I at I >I
r
r
r
r
r
r
61
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