Rockwell Automation 865 Differential Protection Relay User Manual
Page 52
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3-8 Protection
Functions
865-UM001A-EN-P – July 2009
Table 3.2 – Zero Current Compensation in Transformer Applications
Relay setting
Transformator
Connection group
ConnGrp
Io cmps
I'o cmps
YNy0 Yy0
ON
OFF
YNyn0 Yy0
ON
ON
Yy0 Yy0
OFF
OFF
Yyn0 Yy0
OFF
ON
YNy6 Yy6
ON
OFF
YNyn6 Yy6
ON
ON
Yy6 Yy6
OFF
OFF
Yyn6 Yy6
OFF
ON
Yd1 Yd1
OFF
OFF
YNd1 Yd1
ON
OFF
Yd5 Yd5
OFF
OFF
YNd5 Yd5
ON
OFF
Yd7 Yd7
OFF
OFF
YNd7 Yd7
ON
OFF
Yd11 Yd11
OFF
OFF
YNd11 Yd11
ON
OFF
Dy1 Dy1
OFF
OFF
Dyn1 Dy1
OFF
ON
Dy5 Dy5
OFF
OFF
Dyn5 Dy5
OFF
ON
Dy7 Dy7
OFF
OFF
Dyn7 Dy7
OFF
ON
Dy11 Dy11
OFF
OFF
Dyn11 Dy11
OFF
ON
Table 3.3 – Zero Current Compensation in Generator Applications
Relay setting
Genarator only
ConnGrp
Io cmps
I'o cmps
None earthing
Yy0
OFF
OFF
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