ABB RELION 670 Series Technical Manual page 1397

1MRK 502 066-UUS B
Table
1080:
Function
Operating characteristic:
æ
ç
=
t
(
ç
è
I
EQUATION1653 V1 EN-US
I = I
measured
IEC Normal Inverse
IEC Very inverse
IEC Inverse
IEC Extremely inverse
IEC Short time inverse
IEC Long time inverse
Programmable characteristic
Trip characteristic:
æ
ç
=
t
(
ç
P
è
I
EQUATION1654 V1 EN-US
Reset characteristic:
=
t
(
PR
I
EQUATION1655 V1 EN-US
I = I
measured
Technical manual
IEC Inverse time characteristics for Sensitive directional residual overcurrent and power protection
ö
A
÷
×
td
)
÷
P
- ø
1
/I
set
ö
A
÷
+ ×
B td
)
÷
- ø
C
TR
×
td
)
-
CR
/I
set
The parameter setting
setting is for future use and not implemented yet.
Range or value
0.05 ≤ k ≤ 2.00
1.5 x I ≤ I ≤ 20 x I
set set
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
td = (0.05-2.00) 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
TimeChar = Reserved shall not be used, since this parameter
Section 26
Inverse time characteristics
Accuracy
IEC 60255-151, ±5.0%
or ±160 ms whichever
is greater
1391