ABB Relion 670 Series Commissioning Manual page 174
Transformer protection
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Also See for Relion 670 Series:
- Technical manual (1432 pages) ,
- Technical reference manual (1232 pages) ,
- Applications manual (944 pages)
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Section 11
Testing functionality by secondary injection
IEC06000650 V2 EN-US
Figure 48: Characteristic with ROADir restriction
168
3I
0
j
3 ×
j
I
cos
0
ROADir
© Copyright 2017 ABB. All rights reserved
o
=
RCADir
0
Operate area
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=
3
U
U
0
ref
IEC06000650_2_en.vsd
Transformer protection RET670
1MRK 504 165-UEN E
Commissioning manual
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