EN 60865-1:1993

Short-circuit currents - Calculation of effects - Part 1: Definitions and calculation methods

Contains standardized procedures for the calculation of the effects of short-circuit currents in two sections as follows: - the electromagnetic effect on rigid conductors and flexible conductors; the thermal effect on bare conductors. Only a.c. systems for rated voltages up to and including 420 kV are dealt with.

Kurzschlußströme - Berechnung der Wirkung - Teil 1: Begriffe und Berechnungsverfahren

Courants de court-circuit - Calcul des effets - Partie 1: Définitions et méthodes de calcul

Comporte les procédures normalisées de calcul des effets des courants de court-circuit, divisée en deux sections: - Section un: Effets électromagnétiques sur les conducteurs rigides et les conducteurs souples. - Section deux: Effets thermiques sur les conducteurs nus. Ne sont traités dans cette norme que les réseaux à courant alternatif et les tensions assignées jusqu'à 72,5 kV inclus.

Kratkostični toki - Računanje učinkov - 1. del: Definicije in računski postopki (IEC 60865-1:1993)

General Information

• Status: Withdrawn
• Publication Date: 19-Dec-1993
• Withdrawal Date: 30-Sep-1994
• Technical Committee: CLC/SR 73 - Short-circuit currents
• Drafting Committee: IEC/TC 73 - IEC_TC_73
• Parallel Committee: IEC/TC 73 - IEC_TC_73
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 28-Nov-2014
• Completion Date: 28-Nov-2014
• Ref Project: SIST EN 60865-1:1998 - Short-circuit currents - Calculation of effects -- Part 1: Definitions and calculation methods

Relations

• Replaced By: EN 60865-1:2012 - Short-circuit currents - Calculation of effects - Part 1: Definitions and calculation methods
• Effective Date: 29-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 60865-1:1998
01-oktober-1998
.UDWNRVWLþQLWRNL5DþXQDQMHXþLQNRYGHO'HILQLFLMHLQUDþXQVNLSRVWRSNL,(&

Short-circuit currents - Calculation of effects -- Part 1: Definitions and calculation
methods
Kurzschlußströme - Berechnung der Wirkung -- Teil 1: Begriffe und
Berechnungsverfahren
Courants de court-circuit - Calcul des effets -- Partie 1: Définitions et méthodes de calcul
Ta slovenski standard je istoveten z: EN 60865-1:1993
ICS:
17.220.01 Elektrika. Magnetizem. Electricity. Magnetism.
Splošni vidiki General aspects
SIST EN 60865-1:1998 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

INTERNATIONAL IEC


STANDARD 60865-1





Second edition
1993-09


Short-circuit currents –
Calculation of effects –
Part 1:
Definitions and calculation methods

 IEC 1993 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.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: [phone] Telefax: [phone] E-mail: [e-mail] Web: www.iec.ch
PRICE CODE
XA
Commission Electrotechnique Internationale
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue

---------------------- Page: 2 ----------------------

IEC Publication 865-1
Publication 865-1 de la CEI
(Second edition 1993)
(Deuxième édition 1993)
Courants de court-circuit -
Short-circuit currents -
Calcul des effets Calculation of effects
Partie 1: Définitions et méthodes de calcul Part 1: Definitions and calculation methods
C O R R I G E N D U M 1
Page 65, table 2
Page 64, tableau 2
In the third column, for a line-to-line short
Dans la troisième colonne, pour un court-
circuit biphasé, au lieu de: circuit, instead of:
1,8
1,8
lire: read:
- (dash)
- (un tiret)
Page 74, figure 2 Page 75, figure 2
Sur la gauche des dessins, ajouter: Add, at the left-hand side of the drawings:
a) a)
and b) respectively.
et b) respectivement.
Page 104, annexe A, article A.2 Page 105, annex A, clause A.2
Replace the last line of the existing equation
Remplacer la dernière ligne de l’équation
existante par la nouvelle ligne suivante: by the following new line:
& (a/d) + 1 a/d (a/d) -1  Oa/d • b/d ⎞
2 arctan - 2 arctan + arctan
⎠
b/d b/d b/d  6
⎭
Mars 1995 March 1995

---------------------- Page: 3 ----------------------

– 3 –
865-1 ©IEC:1993
CONTENTS
Page
FOREWORD 7
Section 1: General
Clause
1.1 Scope and object 9
1.2 Normative references 9
11 1.3 Equations, symbols and units
11
1.3.1 Symbols for section 2 – Electromagnetic effects
17
1.3.2 Symbols for section 3 – Thermal effects
19
1.4 Definitions
19
1.4.1 Definitions for section 2 – Electromagnetic effects
19
1.4.1.1 Main conductor
19
1.4.1.2 Sub-conductor
19
1.4.1.3 Fixed support
19
1.4.1.4 Simple suppo
rt
19
1.4.1.5 Connecting piece
19
1.4.1.6 Short-circuit tensile force, F t
19
1.4.1.7 Drop force, Ff
21
1.4.1.8 Pinch force, Fpi
Tkl 21
1.4.1.9 Duration of the first short-circuit current flow,
21
1.4.2 Definitions for section 3 - Thermal effects
21
1.4.2.1 Thermal equivalent short-time current,
'th
21
1.4.2.2 Rated short-time withstand current,
Ithr
Sth 21
1.4.2.3 Thermal equivalent short-time current density,
titt, for conductors 21
1.4.2.4 Rated short-time withstand current density, S

Tk 21
1.4.2.5 Duration of short-circuit current,
1.4.2.6 Rated short time, Tkr 21
The electromagnetic effect on rigid conductors
Section 2:
and flexible conductors
2.1 General 23
23
2.1.1 Influence on stress reduction
23
2.1.2 Consideration of automatic reclosing
25
2.2 Rigid conductor arrangements
25
2.2.1 Calculation of electromagnetic forces
2.2.1.1 Calculation of peak force between the main conductors during a three-phase
short circuit 25
2.2.1.2 Calculation of peak force between the main conductors during a line-to-line
short circuit 25
s between coplanar sub-conductors 25
2.2.1.3 Calculation of peak value of for ce
27
ce between main conductors and between sub-conductors
2.2.1.4 Effective distan

---------------------- Page: 4 ----------------------

865-1 © IEC:1993 – 5 –
Clause Page
an forces on supports 27
2.2.2 Calculation of stresses in rigid conductors d
2.2.2.1 General 27
27
2.2.2.2 Calculation of stresses in rigid conductors
q of main conductors composed of sub-conductors 31
2.2.2.3 Section modulus and factor
31
2.2.2.4 Permitted conductor stress
33
2.2.2.5 Calculation of forces on supports of rigid conductors
33
2.2.2.6 Calculation with special regard to conductor oscillation
37
2.3 Flexible conductor arrangements
2.3.1 General 37
...