ABB REC670 Product Manual page 74
Relion 670 series, pre-configured
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Also See for REC670:
- Applications manual (658 pages) ,
- Commissioning manual (218 pages) ,
- Product manual (139 pages)
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Bay control REC670
Pre-configured
Product version: 1.1
Table 90. RI and RD type inverse time characteristics
Function
RI type inverse characteristic
1
=
×
t
k
0.236
-
0.339
I
EQUATION1137-SMALL V1 EN
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
I = I
/I
measured
set
74
Range or value
k = (0.05-999) in steps of 0.01
k = (0.05-999) in steps of 0.01
1MRK 511 192-BEN B
Issued: June 2010
Accuracy
IEC 60255-3, class 5
+ 40 ms
IEC 60255-3, class 5
+ 40 ms
ABB
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