IEC TR 60071-4:2004

Insulation co-ordination - Part 4: Computational guide to insulation co-ordination and modelling of electrical networks

Gives guidance on conducting insulation co-ordination studies which propose internationally recognized recommendations - for the numerical modelling of electrical systems, and - for the implementation of deterministic and probabilistic methods adapted to the use of numerical programmes. Its object is to give information in terms of methods, modelling and examples, allowing for the application of the approaches presented in IEC 60071-2, and for the selection of insulation levels of equipment or installations, as defined in IEC 60071-1.

General Information

• Status: Published
• Publication Date: 22-Jun-2004
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 29.080.30 - Insulation systems
• Technical Committee: TC 28 - Insulation co-ordination
• Current Stage: PPUB - Publication issued
• Start Date: 30-Jun-2004
• Completion Date: 23-Jun-2004

Standards Content (Sample)

TECHNICAL IEC


REPORT TR 60071-4



First edition
2004-06

Insulation co-ordination –
Part 4:
Computational guide to insulation co-ordination
and modelling of electrical networks


Reference number
IEC/TR 60071-4:2004(E)

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As from 1 January 1997 all IEC publications are issued with a designation in the
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TECHNICAL IEC


REPORT TR 60071-4





First edition
2004-06


Insulation co-ordination –
Part 4:
Computational guide to insulation co-ordination
and modelling of electrical networks
 IEC 2004  Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or
mechanical, including photocopying and microfilm, without permission in writing from the publisher.
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For price, see current catalogue

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– 2 – TR 60071-4  IEC:2004(E)
CONTENTS
FOREWORD.7

Scope and object .9
1
2 Normative references.9
3 Terms and definitions .9
4 List of symbols and acronyms .12
5 Types of overvoltages.12
6 Types of studies .13
6.1 Temporary overvoltages (TOV) .14
6.2 Slow-front overvoltages (SFO) .14
6.3 Fast-front overvoltages (FFO).15
6.4 Very-fast-front overvoltages (VFFO).15
7 Representation of network components and numerical considerations .15
7.1 General .15
7.2 Numerical considerations.15
7.3 Representation of overhead lines and underground cables .18
7.4
...