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  • BSI
    PD IEC/TS 60815-4:2016 Selection and dimensioning of high-voltage insulators intended for use in polluted conditions - Insulators for d.c. systems
    Edition: 2016
    $418.55
    / user per year

Description of PD IEC/TS 60815-4:2016 2016

This part of IEC 60815 , which is a Technical Specification, is applicable as first approach for the determination of the required d.c. Unified Specific Creepage Distance for insulators with respect to pollution. To avoid excessive over or under design, existing operation experience should be compared and eventually additional appropriate tests may be performed by agreement between supplier and customer.

It is applicable to:

  • Glass and porcelain insulators;

  • Composite and hybrid insulators with an HTM or non-HTM housing.

This part of IEC 60815 gives specific guidelines and principles to arrive at an informed judgement on the probable behaviour of a given insulator in certain pollution environments.

The structure and approach of this part of IEC 60815 are similar to those explained in Part 1, but adapted for the specific issues encountered with polluted HV d.c. insulation.

The aim of this Technical Specification is to give the user simplified means to:

  • Identify issues specific to d.c. applications that can affect the choice and design process;

  • Determine the equivalent d.c. Site Pollution Severity (SPS) from measurements, correcting for electrostatic effects, diameter, pollution distribution and composition;

  • Determine the reference USCD for different candidate insulating solutions, taking into account materials, dimensions and risk factors;

  • Evaluate the suitability of different insulator profiles;

  • Discuss the appropriate methods to verify the performance of the selected insulators, if required;

This simplified process is intended to be used when comparable operational experience from existing d.c. system is incomplete or not available.

The simplified design approach might result in a solution that exceeds the physical constraints of the project. More refined approaches for such cases, e.g. using a statistical approach, are given in the CIGRE d.c. guidelines [1]. In extreme cases, e.g. for exceptionally severe site conditions, alternative solutions such as changing the line route, relocation of converter stations or using an indoor d.c. yard may need to be considered.



Standard NumberPD IEC/TS 60815-4:2016
TitleSelection and dimensioning of high-voltage insulators intended for use in polluted conditions - Insulators for d.c. systems
StatusDefinitive
Publication Date2016-11-30
Identical National Standard OfIEC TS 60815-4:2016
DescriptorsEnvironment (working), Environmental testing, Dimensions, Polymers, Overhead power-line fittings, Electric insulators, Electric power transmission lines, High voltage, Overhead power lines, Shape, Selection, Leakage paths, High-voltage equipment, Alternating current, Pollution
ICS29.080.10 Insulators
CommitteePEL/36
ISBN978 0 580 76745 6
PublisherBSI
Pages34

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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