ABB SACE Tmax XT7 - Page 11

8 Wiring diagram - XT7
Open/closed aux.contacts
of circuit-breaker
First opening coil
Second opening coil or
undervoltage coil
YO2/YU opening coil state
signalling contact
Signalling modules
and/or
and/or
and/or
and/or
Temperature monitoring modules
Ekip synchro check
Communication modules
Redundant communication
modules
Auxiliary supply and Local Bus
Current sensor input on
external neutral
Zone selectivity
RC residual current protection
sensor input
Transformer star centre
sensor input
Ekip measuring voltage
sockets
Protection relay tripped
signalling contact
Auxiliar early contacts operated
by crank handle
Tripped position breaker
signalling contact
ModuleModule