ABB RED650 Technical Manual page 887

1MRK 505 394-UEN A
Line differential protection RED650 2.2 IEC
Technical manual
Table 665: RI and RD type inverse time characteristics for Line differential protection
Function
RI type inverse characteristic
1
= ×
t k
0.236
-
0.339
I
EQUATION1137-SMALL V1 EN-US
I = I /I
measured set
RD type logarithmic inverse
characteristic
æ ö
I
- ×
ç ÷
= 5.8 1.35 In
t
è ø
k
EQUATION1138-SMALL V1 EN-US
I = I /I
measured set
Table 666: ANSI Inverse time characteristics for Line Differential Protection
Function
Operating characteristic:
æ ö
A
ç ÷
= + × +
t B k tDef
( )
ç ÷
P
ç - ÷
I 1
è ø
EQUATION1249-SMALL V2 EN-US
Reset characteristic:
t r
= ×
t k
( )
2
-
I 1
EQUATION1250-SMALL V1 EN-US
I = I /I
measured set
ANSI Extremely Inverse
ANSI Very inverse
ANSI Normal Inverse
ANSI Moderately Inverse
ANSI Long Time Extremely Inverse
ANSI Long Time Very Inverse
ANSI Long Time Inverse
Inverse time characteristics
Range or value
0.10 ≤ k ≤ 3.00
1.5 x I ≤ I ≤ 20 x I
set set
Range or value
k = (0.05-2.00) in steps of
0.01
A=28.2, B=0.1217, P=2.0 ,
tr=29.1
A=19.61, B=0.491, P=2.0 ,
tr=21.6
A=0.0086, B=0.0185, P=0.02,
tr=0.46
A=0.0515, B=0.1140, P=0.02,
tr=4.85
A=64.07, B=0.250, P=2.0,
tr=30
A=28.55, B=0.712, P=2.0,
tr=13.46
A=0.086, B=0.185, P=0.02,
tr=4.6
Section 25
Accuracy
IEC 60255-151, ±5.0%
or ±40 ms whichever is
greater
GUID-771E5218-2913-4BB0-B1EE-2CA1E912AEAA v1
Accuracy
ANSI/IEEE C37.112 ,
± 5.0% or ± 40 ms
whichever is greater
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