B - Operations – Transporting – 64 – F
Patent
B - Operations, Transporting
64
F
348/43
B64F 1/34 (2006.01) H01R 13/703 (2006.01) H02H 5/10 (2006.01) H03K 17/66 (2006.01)
Patent
CA 1234905
ABSTRACT 400 Hz aircraft ground power supply with a three phase AC power source connectable via an electric power relay and flexible cable provided with a socket connector to a plug connector at the aircraft is disclosed. In the energizing circuit of the power relay is arranged a closing contact of a second electric relay, the energizing circuit of which is led via switching means at the socket connector to be actuated by a pin of the plug connector. Thus the closing contact of the second relay is opened as long as the socket connector is not plugged to the plug connector. A third electric relay energized via the connectors by a source of DC current on board the aircraft has a closing contact in parallel to the closing contact of the second relay in the energizing circuit of the power relay and further opening contacts disconnecting a separate source of voltage in the energizing circuit of the second relay if the third relay is energized.
507315
Piller (anton) G.m.b.h. & Co. Kg
Ridout & Maybee Llp
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