Current Differential Relay
GARD 8000 SYS RFL Electronics
June 20, 2014 13-42 973.334.3100
The Transferred Status Bits web page is shown below.
Figure 13-25. Current Differential Relay Transferred Status Bits webpage
The status of eight bits received by the logic bus in the chassis is shown above. Green indicates an
active state while red indicates an inactive state.
Direct Transfer Trip
The Current Differential relay provides a bidirectional high priority transfer trip message to one or
both remote stations in three terminal line applications. The transfer trip function is independent of the
differential protection, and is initiated externally via one of the optical isolated inputs. It is available at
the remote station via one of the programmable outputs.
The transfer trip message is the highest priority message in the relay, and provides a back to back
channel time of 3ms, as measured to a solid state output.