Table 48. Line differential protection with in-zone power transformer (LNPLDF) main settings
Parameter Function Value (Range) Step
Low operate value LNPLDF 10...200 % I
r
1
High operate value LNPLDF 200...4000 % I
r
1
Start value 2.H LNPLDF 10...50% 1
Time multiplier LNPLDF 0.05...15.00 0.01
Operating curve type LNPLDF 1 = ANSI Ext. inv.
3 = ANSI Norm. inv.
5 = ANSI Def. Time
9 = IEC Norm. inv.
10 = IEC Very inv.
12 = IEC Ext. inv.
15 = IEC Def. Time
-
Operate delay time LNPLDF 45...200000 ms 1
CT ratio correction LNPLDF 0.200...5.000 0.001
Table 49. Binary signal transfer (BSTGAPC)
Characteristic
Value
Signalling delay Fiber optic link <5 ms
Galvanic pilot wire link <10 ms
Table 50. Switch-onto-fault protection (CVPSOF)
Characteristic
Value
Operation accuracy Depending on the frequency of the voltage measured: f
n
±2Hz
Current: ±1.5% of the set value or ±0.002 × I
n
Voltage: ±1.5% of the set value or ±0.002 × U
n
Operate time accuracy ±1.0% of the set value or ±20 ms
Suppression of harmonics DFT: -50 dB at f = n × f
n
, where n = 2, 3, 4, 5,…
Table 51. Switch-onto-fault protection (CVPSOF) main settings
Parameter
Function Value (Range) Step
SOTF reset time CVPSOF 0...60000 ms 10
1MRS759144 A
To Next Page
Loading...
