ABB Relion 670 Series Product Manual page 55

ABB
Phasor measurement unit RES670
Pre-configured
Product version: 1.2
Table 65. IEC Inverse time characteristics
Function
Operating characteristic:
æ ö
A
ç ÷
= ×
t k
( )
ç ÷
P
-
è ø
I 1
EQUATION1251-SMALL V1 EN
I = I /I
measured set
Time delay to reset, IEC inverse time
IEC Normal Inverse
IEC Very inverse
IEC Inverse
IEC Extremely inverse
IEC Short time inverse
IEC Long time inverse
Programmable characteristic
Operate characteristic:
æ ö
A
ç ÷
= + ×
t B k
( )
ç ÷
P
-
è ø
I C
EQUATION1370-SMALL V1 EN
Reset characteristic:
TR
= ×
t k
( )
PR
-
I CR
EQUATION1253-SMALL V1 EN
I = I /I
measured set
Range or value
k = (0.05-999) in steps of 0.01
(0.000-60.000) s
A=0.14, P=0.02
A=13.5, P=1.0
A=0.14, P=0.02
A=80.0, P=2.0
A=0.05, P=0.04
A=120, P=1.0
k = (0.05-999) in steps of 0.01
A=(0.005-200.000) in steps of 0.001
B=(0.00-20.00) in steps of 0.01
C=(0.1-10.0) in steps of 0.1
P=(0.005-3.000) in steps of 0.001
TR=(0.005-100.000) in steps of 0.001
CR=(0.1-10.0) in steps of 0.1
PR=(0.005-3.000) in steps of 0.001
1MRK 511 266-BEN -
Accuracy
-
± 0.5% of set time ± 10 ms
IEC 60255-151, 5% + 40
ms
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