Inverse Characteristics - ABB Relion 650 Series Technical Manual

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Bay control REC650 2.2 IEC
Technical manual

Inverse characteristics

Table 572: ANSI Inverse time characteristics
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 ≤ 999.00
1.5 x I ≤ I ≤ 20 x I
set set
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
IP15797-1 v2
M12388-1 v23
Accuracy
ANSI/IEEE C37.112 ,
±2.0% or ±40 ms
whichever is greater
709