BS 5733:1995 Specification for general requirements for electrical accessories
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1.1 This British Standard specifies requirements and tests to check the safety in normal use of electrical
accessories which are not covered by other specific British Standards.
Such accessories are intended for use in household, commercial and light industrial premises where:
— the nominal supply voltage does not exceed 250 V a.c. single-phase, 50 Hz to 60 Hz or 250 V d.c.;
— the rated current of the accessory does not exceed 63 A;
— the rated current of an accessory incorporating screwless terminals does not exceed 13 A.
Unless otherwise stated by the manufacturer, accessories conforming to this standard are intended for
connection by cables or flexible cords conforming to BS 6004, BS 6007 or BS 6500.
1.2 This standard also covers “plug-in” and other accessories in which electrical accessory components such
as plug-pins, socket-contacts, switches, terminals, etc. are incorporated.
NOTE See 5.1.
1.3 Accessories conforming to this standard are suitable for use under the following conditions of service:
— an ambient temperature in the range S5 ®C to + 40 ®C, the average value over 24 h not
exceeding 25 ®C;
NOTE 1 Under normal conditions of use, the available cooling air is subject to natural atmospheric variations of temperature and
hence the peak temperature occurs only occasionally during the hot season, and on those days when it does occur, it does not persist
for lengthy periods.
— a situation not subject to direct radiation from the sun or other source of heat likely to raise temperatures above the limits specified above;
— an altitude not exceeding 2 000 m above sea-level;
— an atmosphere not subject to excessive pollution by smoke, chemical fumes, rain, spray, prolonged periods of high humidity or other abnormal conditions.
NOTE 2 Accessories conforming to this standard may be suitable for use in other conditions, subject to agreement between
manufacturer and user. Information given in a manufacturer’s catalogue may take the place of such an agreement.
1.4 Requirements for electromagnetic compatibility are not given, as accessories do not in themselves
produce extraneous emissions, nor is their functioning affected by external emissions. Therefore no
emission or immunity tests are necessary.
It should be noted that accessories containing active electronic components, other than luminous indicating
devices, may be susceptible to, or emit, electromagnetic interference. Tests for these are under
consideration.
Primary Item Type:
British Standard
Identifiers:
ISBN 0580235424
ICS 29.120.01 Electrical accessories in general
Language:
English
Subject Keywords:
Mechanical testing; Electrical safety; Clearance distances; Electrical components; High-voltage tests; Earthing; Socket adaptors; Flexible cables; Corrosion tests; Resistance measurement; Test equipment; Leakage paths; Electric conductors; Copper; Electric sockets; Heat ageing tests; Electric cables; Switches; Electric terminals; Torsion testing; Heating tests; Pressure testing; Boxes (electric); Electric connectors; Marking; Damp-air tests; Electric plugs; Electrical testing; Impact testing; Protected electrical equipment
