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D-2
Electrical diagrams
Source-changeover system without automatic-control system
Without auxiliaries for emergency off
Local reset
DB401805
DB101659
Voluntary remote reset
DB101660
Automatic reset
(1)
Prefabricated wiring: cannot be modified.
Legends
QN
“Normal” source Compact NSX equipped with motor mechanism
QR
“Replacement” source Compact NSX equipped with motor
mechanism
SDE
“fault-trip” indication contact
IVE
electrical interlocking and terminal block unit
MT
motor mechanism
OF2
breaker ON/OFF indication contact
RN
reset order for breaker QN
RR
reset order for breaker QR
States permitted by mechanical interlocking system
Normal
Replacement
0
0
1
0
0
1
Note:
diagram shown with circuits de-energised, circuit breakers open
and relays in normal position.
2 Compact NSX100/630 devices
Diagram no. 51201177