Woodward HighPROtec MCDLV4, Manual, Page: 670 / 1275

Protective Elements
Example: Direct Trip Transfer
If it is required that a trip decision of the phase differential protection of the remote device always trips the local
device as well then this can be achieved with the Transfer Trip („Trip-Trans“) module.
The trip signals („Trip“) of the phase differential protection “Id” and of the unrestrained high-set differential current
protection “IdH” must be assigned to the transmission inputs of the Transfer Trip module.
Then the trip command (TripCmd) of the Transfer Trip module has to be assigned as an additional trip command
(Off Cmd) to the Trip Manager of the switchgear so that it can finally be assigned to an output relay to trigger the
tripping coil.
670 MCDLV4 DOK-HB-MCDLV4-2E
T
ra
n
sf
e
rT
ri
p
s_
Z
0
1 A B
CT A
Device A Device B
QA QB
CT B
Trip-Trans
Trip 1
Trip 1
Trip 2
Trip 2
Transmit
Receive
TripCmd
Permissive 1
Permissive 2
Φ
ExBlo1
ExBlo2
QA
TripCmd
Off Cmd 1
Off Cmd 2
Off Cmd 3
BO 1
Assignment
1
Trip-Trans
Trip 1
Trip 1
Trip 2
Trip 2
Transmit
Receive
TripCmd
Permissive 1
Permissive 2
Φ
ExBlo1
ExBlo2
QB
TripCmd
Off Cmd 1
Off Cmd 2
Off Cmd 3
BO 1
Assignment
1
Id
Alarm
Trip
TripCmd
Alarm
Trip
TripCmd
ExBlo1
ExBlo2
IdH
Alarm
Trip
TripCmd
Alarm
Trip
TripCmd
ExBlo1
ExBlo2
Assignment Assignment
Id
Alarm
Trip
TripCmd
Alarm
Trip
TripCmd
ExBlo1
ExBlo2
IdH
Alarm
Trip
TripCmd
Alarm
Trip
TripCmd
ExBlo1
ExBlo2
TripCmd TripCmd