Toshiba GR-200-5 Instruction Manual page 269

Relay A
Relay A
Relay OC G Current
Inflow
Fault current
Unfaulted current
Relay OC R Current
Inflow
Fault current
Unfaulted current
Figure 2.22-16 Coordination of shot number not performed
In order to avoid the mismatch in coordination between relays G and R described above,
it is necessary to match the shot numbers between relay G and relay R; a coordination function
provided to match the shot number in the ARC function, as illustrated in Figure 2.22-17.
Pickup in
DT G
(1)
DT G
1st trip 2nd trip
ARC SHOT1 ARC SHOT2
Pickup in
DT R DT R
(1)
1st trip 2nd trip
ARC SHOT1 ARC SHOT2
- 249 -
G
1nd trip
IDMT G
(3)
(2)
3rd trip not
performed
IDMT R
(2)
3rd trip
ARC SHOT3
G
6F2T0207 (0.01)
ARC SHOT1
DT G
(1)
1st trip
ARC SHOT1
IDMT R
(3) (4)
4th trip not
performed
GRE200 (5,6)
DT
(1