ABB Relion REL650 Series Product Manual page 105

Line distance protection REL650
Version 2.2
Table 157. RI and RD type inverse time characteristics
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 158. ANSI Inverse time characteristics for Sensitive directional residual overcurrent and power protection
Function
Operating characteristic:
æ ö
A
ç ÷
= + ×
t B k
( )
ç ÷
-
P
I 1
è ø
EQUATION1249-SMALL V3 EN-US
I = I /I
measured set
ANSI Extremely Inverse
ANSI Very inverse
ANSI Normal Inverse
ANSI Moderately Inverse
Long Time Extremely Inverse
Long Time Very Inverse
Long Time Inverse
Hitachi Power Grids
Range or value
0.05 ≤ k ≤ 999.00
1.5 x I ≤ I ≤ 20 x I
set set
GUID-19F8E187-4ED0-48C3-92F6-0D9EAA2B39BB v5
Range or value
0.05 ≤ k ≤ 2.00
1.5 x I ≤ I ≤ 20 x I
set set
A=28.2, B=0.1217, P=2.0
A=19.61, B=0.491, P=2.0
A=0.0086, B=0.0185, P=0.02, tr=0.46
A=0.0515, B=0.1140, P=0.02
A=64.07, B=0.250, P=2.0
A=28.55, B=0.712, P=2.0
A=0.086, B=0.185, P=0.02
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Accuracy
Accuracy
105