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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
16 curve types
,
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
Содержание RED670 Relion 670 series
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