Installation guide

C-4
Electrical diagrams
Source-changeover system without automatic-control system
With emergency off by MN release and automatic reset
DB112553
Automatic reset
ATTENTION
(1) Prefabricated wiring supplied.
(2) Independent auxiliary source.
The diagram shows the electrical wiring for circuit breakers.
When wiring the SDE with switch-disconnectors, reverse
the wires connected to terminals 82 and 84.
Legends
QN Normal”
source Compact NS equipped with motor
mechanism
QR “Replacement” source Compact NS equipped with motor
mechanism
MN
undervoltage release
OF2 breaker
ON/OFF indication contact
SDE “fault-trip”
indication contact
MT motor mechanism
IVE
electrical interlocking and terminal block unit
BP emergency off button with latching
KA3 auxiliary
relay
F1 auxiliary power supply circuit breaker
States permitted by mechanical interlocking system
Normal Replacement
0 0
1 0
0 1
Note:
after a fault trip, the breaker must be reset manually by pressing
its reset button.
Diagram shown with circuits de-energised, circuit breakers open
and relays in normal position.
Remote-operated
source-changeover systems
2 Compact NS100/630 devices
Diagram no. 51201178
Livre 1.indb 4 08/10/2008 18:39:40