ABB Relion 650 Series Technical Manual page 719

1MRK 511 424-UEN B
Bay control REC650 2.2 IEC
Technical manual
Table 577: RI and RD type inverse time characteristics for Sensitive directional residual
overcurrent and power 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 578: ANSI Inverse time characteristics for Voltage restrained time overcurrent protection
Function
Operating characteristic:
æ ö
A
ç ÷
= + ×
t B k
( )
ç ÷
-
P
I 1
è ø
EQUATION1249-SMALL V3 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
0.05 ≤ k ≤ 2.00
1.5 x I ≤ I ≤ 20 x I
set set
Range or value
0.05 ≤ k ≤ 999.00
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 19
Accuracy
IEC 60255-151, ±5.0%
or ±160 ms whichever
is greater
GUID-2AE8C92E-5DA8-487F-927D-8E553EE29240 v2
Accuracy
ANSI/IEEE C37.112 ,
± 5.0% or ±40 ms
whichever is greater
713