The Electrical Review, Том 147IPC Electrical-Electronic Press,., 1950 |
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Сторінка 546
... switches . For the sake of clarity , feeders have been omitted from the busbars and busbar chambers and the circuit breakers or switch - fuses have been indicated by the symbol for isolating switches . The frame of each alternator is ...
... switches . For the sake of clarity , feeders have been omitted from the busbars and busbar chambers and the circuit breakers or switch - fuses have been indicated by the symbol for isolating switches . The frame of each alternator is ...
Сторінка 584
... switch - room is fed from circuit breakers in the main switch- room covering the whole of the Palace of Westminster . Three Dorman & Smith boards , covering a.c. power and lighting and d.c. power , incorporate main switches carrying ...
... switch - room is fed from circuit breakers in the main switch- room covering the whole of the Palace of Westminster . Three Dorman & Smith boards , covering a.c. power and lighting and d.c. power , incorporate main switches carrying ...
Сторінка 998
... switch only . Both are available for front or back wiring and terminals are provided to take an earth wire through the double - pole switch . The list price of the units is : switch with fuse 13s ; switch alone 6s . Vapour - Tight ...
... switch only . Both are available for front or back wiring and terminals are provided to take an earth wire through the double - pole switch . The list price of the units is : switch with fuse 13s ; switch alone 6s . Vapour - Tight ...
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