When the residual condition is added with the "I0 input selection", the sum of the current and the
residual current are compared against each other to verify the wiring condition.
Figure. 5.5.1 - 129. Broken secondary phase current wiring.
When phase current wire is broken all of the conditions are met in the CTS and alarm shall be issued in
case if the situation continues until the set alarming time is met.
Figure. 5.5.1 - 130. Broken primary phase current wiring.
In this example, all other condition are met except the residual difference. That is now 0 ×
I
n
, which
indicates a primary side fault.
A
AQ
Q-S215
-S215
Instruction manual
Version: 2.04
192
Summary of Contents for AQ-S215
Page 1: ...AQ S215 Bay control IED Instruction manual...
Page 249: ...Figure 7 4 151 Example block scheme A AQ Q S215 S215 Instruction manual Version 2 04 248...
Page 269: ...Figure 8 13 172 Device installation A AQ Q S215 S215 Instruction manual Version 2 04 268...
Page 287: ...10 Ordering information A AQ Q S215 S215 Instruction manual Version 2 04 286...