SELECTION AND DIMENSIONING OF HIGH-VOLTAGE INSULATORS INTENDED FOR USE IN POLLUTED CONDITIONS - PART 1: DEFINITIONS, INFORMATION AND GENERAL PRINCIPLES

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

01-01-2011

Publisher

Comitato Elettrotecnico Italiano

FOREWORD
1 Scope and object
2 Normative references
3 Terms, definitions and abbreviations
4 Proposed approaches for the selection and
  dimensioning of an insulator
5 Input parameters for the selection and dimensioning
  of insulators
6 System requirements
7 Environmental conditions
8 Evaluation of site pollution severity (SPS)
9 Insulation selection and dimensioning
Annex A (informative) - Flowchart representation of the
        design approaches
Annex B (informative) - Pollution flashover mechanisms
Annex C (normative) - Measurement of ESDD and NSDD
Annex D (normative) - Evaluation of type B pollution severity
Annex E (normative) - Directional dust deposit gauge
        measurements
Annex F (normative) - Use of laboratory test methods
Annex G (normative) - Deterministic and statistical
        approaches for artificial pollution
        test severity and acceptance criteria
Annex H (informative) - Example of a questionnaire to
        collect information on the
        behaviour of insulators in polluted areas
Annex I (informative) - Form factor
Annex J (informative) - Correspondence between specific
        creepage distance and USCD
Bibliography

Defines general definitions, methods for the evaluation of pollution site severity (SPS) and outlines the principles to arrive at an informed judgement on the probable behaviour of a given insulator in certain pollution environments.

Committee	CT 36
DocumentType	Standard
Pages	56
PublisherName	Comitato Elettrotecnico Italiano
Status	Current

IEC 60038:2009	IEC standard voltages
IEC 60305:1995	Insulators for overhead lines with a nominal voltage above 1000 V - Ceramic or glass insulator units for a.c. systems - Characteristics of insulator units of the cap and pin type
IEC 60050-471:2007	International Electrotechnical Vocabulary (IEV) - Part 471: Insulators
IEC TS 62073:2016	Guidance on the measurement of hydrophobicity of insulator surfaces
IEC TS 61245:2015	Artificial pollution tests on high-voltage ceramic and glass insulators to be used on d.c. systems
IEC 60433:1998	Insulators for overhead lines with a nominal voltage above 1 000 V - Ceramic insulators for a.c. systems - Characteristics of insulator units of the long rod type
IEC 60507:2013	Artificial pollution tests on high-voltage ceramic and glass insulators to be used on a.c. systems
IEC TR 62039:2007	Selection guide for polymeric materials for outdoor use under HV stress