CSA C71-1:99 (R2020):2000 Edition

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Insulation co-ordination – Part 1: Definitions, principles and rules

Published By	Publication Date	Number of Pages
CSA	2000-04-07	153

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Categories: 29.080.01 - Electrical insulation in general, CSA

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Description

CSA Preface

This is the first edition of CSA Standard CAN/CSA-C71 -1, Insulation co-ordination — Part 1: Definitions, principles and rules, which is an adoption, with Canadian deviations, of the identically titled CEI/IEC (International Electrotechnical Commission)Standard 71 -1 : 1 993 (seventh edition, 1993-12).

This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.

Scope

This part of International Standard IEC 71 applies to three-phase a.c. systems having a highest voltage for equipment above 1 kV. It specifies the procedures for the selection of the standard withstand voltages for the phase-to-earth, phase-to-phase and longitudinal insulation of the equipment and the installations of these systems. It also gives the lists of the standardized values from which the standard withstand voltages shall be selected.

This part recommends that the selected withstand voltages should be associated with the highest voltage for equipment. This association is for insulation co-ordination purposes only. The requirements for human safety are not covered by this Standard.

Although the principles of this part also apply to transmission line insulation, the values of the withstand voltages may be different from the standard withstand voltages.

The apparatus committees are responsible for specifying the withstand voltages and the test procedures suitable for the relevant equipment taking into consideration the recommendations of this Standard.

NOTE – In IEC 71-2 Application Guide, (under revision), all rules for insulation co-ordination given in this Standard are justified in detail, in particular the association of the standard withstand voltages with the highest voltage for equipment. When more than one set of standard withstand voltages is associated with the same highest voltage for equipment, guidance is provided for the selection of the most suitable set.

Additional information

Published Code	CSA
Published By	Canadian Standards Association
Publication Date	2000-04-07
Pages Count	153
Language	France
Descriptors	Alternating Voltages, Co-Ordination, Definitions, Dielectric, Earth, Earth Leakage, Earthing, Electric Conductors, Electric Power Distribution, Electrical, Electrical Engineering, Electrical Insulation, Electrical Testing, Equipment, High Voltage, Insulated, Insulation Coordination, Insulation Levels, Insulations, Lighting Surge Voltages, Methods, Network, Overvoltage, Overvoltage Protection, Plant, Principles, Qualification Tests, Rated Insulation Level, Rated Withstand Voltage, Selection, Self-Healing, Service Voltage, Specification (Approval), Standardization, Statistical, Surge Arresters, Switching Voltage, Testing, Three-Phase Current, Three-Phase Networks, Transformers, Voltage, Withstand Voltage, Specifications
Edition	1
File Size	17.5 MB
ICS Codes	29.080.01 - Electrical insulation in general

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CSA C71-1:99 (R2020):2000 Edition

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