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  • BSI
    BS 3297-2:1993, IEC 60273:1990 Characteristics of indoor and outdoor post insulators for systems with nominal voltages greater than 1000 V
    Edition: 1993
    $442.60
    / user per year

Description of BS 3297-2:1993 1993

This standard applies to post insulators and post insulator units of ceramic material or glass intended for indoor or outdoor service, and to post insulators of organic material intended for indoor service in electrical installations or equipment operating on alternating current systems with a nominal voltage greater than 1 000 V and a frequency not greater than 100 Hz. It may also be regarded as a provisional standard for insulators for use on direct current systems.

The insulators covered by this standard are primarily intended for use in isolators (disconnectors) or as bus-bar or fuse supports.

This standard covers five types of post insulators:

  1. indoor post insulators of ceramic material or glass and with internal metal fittings;

  2. indoor post insulators of organic material and with internal metal fittings;

  3. outdoor cylindrical post insulators of ceramic material or glass and with internal metal fittings;

  4. outdoor cylindrical post insulators of ceramic material or glass and with external metal fittings;

  5. outdoor pedestal post insulators of ceramic material or glass.

The term “cylindrical insulators” is intended to cover insulators of the truncated conical form also.

The five types of insulators are distinguished by their electrical, mechanical and dimensional characteristics. Figure 1, Figure 2, Figure 3, Figure 4 and Figure 5 illustrate typical examples of each type of insulator.

These drawings are only general illustrations and other shapes and constructions are permitted.



Standard NumberBS 3297-2:1993, IEC 60273:1990
TitleCharacteristics of indoor and outdoor post insulators for systems with nominal voltages greater than 1000 V
StatusDefinitive
Publication Date1993-01-15
ReplacesBS 3297-2:1982
Identical National Standard OfIEC 60273:1990
DescriptorsPost insulators, Grades (quality), Classification systems, Electric insulators, Designations, Impulse voltages, Frequencies, Glass, Leakage paths, Withstand voltage, Dimensions, Design, Fixing, Interchangeability, Diameter, Seatings, Ceramics, Breaking load, Holes, Rated voltage, Strength of materials, Height, Electrical insulation devices
ICS29.080.10 Insulators
CommitteePEL/36
ISBN0 580 21454 0
PublisherBSI
Pages36

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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