2 trolley with manual racking – GE Industrial Solutions DC OEM Module For use with Gerapid DC Circuit Breaker User Manual
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DC OEM MODULE FOR USE WITH GERAPID CIRCUIT BREAKERS
Chapter 7 Operating the Module
18
Design and specifications are subject to change without notice
S47183Ee rev.01 2011-04-26
7.2 Trolley with Manual Racking
Operational Positions
The trolley has four separate operating positions:
1. CONNECTED position – Primary Disconnects and
Secondary Disconnect in full contact, breaker ready for normal
operation. Position Interlock, see Fig. 72-1, keeps the trolley in
this position.
Fig. 72-1 CONNECTED position of the trolley
2. TEST position - Primary Disconnect separated by a safe
distance and shutters closed. The Secondary Disconnect is in
full contact. Trolley is withdrawn ~5 inches and locked by
Position Interlock. See Fig. 72-2.
3. DISCONNECTED position - Primary Disconnects separated
by a safe distance and shutters closed. Secondary Disconnect
is disengaged. Trolley positioned in the TEST position.
4. WITHDRAWN position – Trolley outside of the Module.
NOTE:
Manual racking-in and racking-out does not
require control voltage to be present. Although, switching
ON/OFF the breaker will not possible in such case.
Fig. 72-2 TEST position of the trolley
Racking – In Procedure
NOTE: Crank Handle is necessary for racking operations.
Crank Handle has to be ordered separately.
1. Trolley WITHDRAWN. Push trolley toward the module until
it stops at DISCONNECTED position.
2. Open the trolley’s door and install Secondary Disconnect.
Now the trolley is at the TEST position.
NOTE: .Use the Door Key to open all Door Locks and
release Door Interlock. See Fig. 72-3.
NOTE: Make sure that Receptacle Snap Lock is engaged.
3. Lift up the Access Lever (Fig. 71-4) and push the trolley in
further until racking shaft (Fig. 71-1) couples with socket
(Fig. 71-8).
NOTE: S4F contact should indicate the coupling position if
connected (Y64 Y65) to any external indication device.
Secondary Disconnect
Primary Disconnects
Position Interlock
Secondary Disconnect
Primary Disconnects
Position Interlock