Manual

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