A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Working principle; three systems of automatic fire alarms, namely: normally open circuit; closed circuit, systems AP and AH; and plants with normally closed circuit and intensified current, system AG; totally enclosed alarm contactors.
Working principle; three systems of automatic fire alarms, namely: normally open circuit; closed circuit, systems AP and AH; and plants with normally closed circuit and intensified current, system AG; totally enclosed alarm contactors.
Automatic fire alarm plants
AEG Progress
Meyerowitz, R. (author)
1929
6 pages
13 Figs.
Article (Journal)
English
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