BS 5424-1(1977) : 1977被替代
SPECIFICATION FOR CONTROLGEAR FOR VOLTAGES UP TO AND INCLUDING 1000 V Z.C. AND 1200 V D.C. - CONTACTORS
出版：British Standards Institution
专家解读视频
Deals with contactors for closing and opening electric circuits and for protecting these circuits against operating overloads which may occur. Concerns only contactors, the main contacts of which are designed to be connected to circuits, the rated voltage of which does not exceed 1000 V a.c. or 1200 V d.c. Sections are included on definitions concerning contactors, positions, control and auxiliary circuits, classification, rated values, control circuits and air supply systems, short circuit protective devices, nameplates, normal service conditions, mechanical design, enclosures, temperature rise, dielectric properties, limits of operation and tests.
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