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Document ID (ISN)33842
CIS number 80-1219
Year 1979
Convention or series no.
Title High voltage industrial control equipment.
Bibliographic information ANSI/UL 347-1978, Underwriters' Laboratories, 207 East Ohio Street, Chicago, Illinois 60611, USA, 15 Jan. 1979. 44p. Illus. Price: US$5.00.
Abstract This standard, approved as an American national standard on 16 Oct. 1978, applies to enclosed industrial control equipment and associated components intended for starting, stopping, regulating, controlling, or protecting electric motors or other electrical loads including refrigeration equipment, having a.c. voltage ratings in the range of 2.2-2.5kV or 4.0-5.0kV, including fire pump controllers, but not equipment for use in hazardous locations. Contents include: definitions; construction (guarding and accessibility of live parts; earthing and bonding; protective devices; overload relays; isolating; interlocking); performance; rating; marking.
Descriptors (primary) switchgear; control of electrical quantities; electrical safety; high voltage; USA
Descriptors (secondary) interlock protection; electric control systems; earthing; standard; electrical overload protection
Document type F - Information notes, codes of practice, standards
Subject(s) Electricity
Broad subject area(s)
Browse category(ies) Electricity