ABB RED670 - Line Differential Protection L3 CPDIF, L6 CPDIF, LT3 CPDIF, LT6 CPDIF

Table 30. Line differential protection L3CPDIF,L6CPDIF,LT3CPDIF,LT6CPDIF
Function Range or value Accuracy
*Minimum operate current (20-200)% of IBase ±1.0% of I
r
at I ≤ I
r
±1.0% of I at I > I
r
SlopeSection2 (10.0-50.0)% -
SlopeSection3 (30.0-100.0)% -
EndSection 1 (20–150)% of IBase -
EndSection 2 (100–1000)% of IBase -
*Unrestrained limit function (100–5000)% of IBase ±1.0% of I
r
at I ≤ I
r
±1.0% of I at I > I
r
*Second harmonic blocking (5.0–100.0)% of fundamental ±1.0% of I
r
Note: fundamental magnitude = 100% of I
r
*Fifth harmonic blocking (5.0–100.0)% of fundamental ±2.0% of I
r
Note: fundamental magnitude = 100% of I
r
*Inverse characteristics, see table
171, 172 and table 172
16 curve types See table 171, 172 and table 173
Critical impulse time 2ms typically at 0 to 10 x I
d
-
Charging current compensation On/Off -
LT3CPDIF and LT6CPDIF:
*Operate time, restrained function at
0 to 10 x I
d
Min. = 25 ms
Max. = 35 ms
-
*Reset time, restrained function at 10
to 0 x I
d
Min. = 5 ms
Max. = 15 ms
-
*Operate time, unrestrained function
at 0 to 10 x I
d
Min. = 5 ms
Max. = 15 ms
-
*Reset time, unrestrained function at
10 to 0 x I
d
Min. = 15 ms
Max. = 25 ms
-
L3CPDIF and L6CPDIF:
*Operate time, restrained function at
0 to 10 x I
d
Min. = 10 ms
Max. = 25 ms
-
*Reset time, restrained function at 10
to 0 x I
d
Min. = 15 ms
Max. = 25 ms
-
*Operate time, unrestrained function
at 0 to 10 x I
d
Min. = 5 ms
Max. = 15 ms
-
*Reset time, unrestrained function at
10 to 0 x I
d
Min. = 15 ms
Max. = 25 ms
-
*Note: Data valid for a single IED with two local current input groups
1MRK 505 346-BEN -
Line differential protection RED670 2.1 IEC
Product version: 2.1
ABB 57