EN 60265-2:1993

SLOVENSKI STANDARD
01-februar-1998
High-voltage switches - Part 2: High voltage switches for rated voltages of 52 kV
and above (IEC 265-2:1988 + corrigendum Feb.1990)
High-voltage switches -- Part 2: High-voltage switches for rated voltages of 52 kV and
above
Hochspannungs-Lastschalter -- Teil 2: Hochspannungs-Lastschalter für
Nennspannungen ab 52 kV und darüber
Interrupteurs à haute tension -- Partie 2: Interrupteurs à haute tension de tension
assignée égale ou supérieure à 52 kV
Ta slovenski standard je istoveten z: EN 60265-2:1993
ICS:
29.120.40 Stikala Switches
29.130.10 Visokonapetostne stikalne in High voltage switchgear and
krmilne naprave controlgear
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

CEI
NORME
IEC
INTERNATIONALE
265-2
INTERNATIONAL
Première édition
STANDARD
First edition
Interrupteurs à haute tension
Deuxième partie:
Interrupteurs à haute tension de tension assignée
égale ou supérieure à 52 kV
High-voltage switches
Part 2:
High-voltage switches for rated voltages
of 52 kV and above
© CEI 1988 Droits de reproduction réservés — Copyright — all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in
utilisée sous quelque forme que ce soit et par aucun pro- any form or by any means, electronic or mechanical,
cédé, électronique ou mécanique, y compris la photocopie et including photocopying and microfilm, without permission
les microfilms. sans l'accord écrit de l'éditeur. in writing from the publisher.
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For price, see current catalogue

IEC Publication 265-2
Publication 265-2 de la CEI
1988) (First edition - 1988)
(Première édition -
High-voltage switches
Interrupteurs à haute tension
Part 2: High-voltage switches
Deuxième partie: Interrupteurs à haute
for rated voltages of 52 kV and above
tension de tension assignée égale
ou supérieure à 52 kV
CORRIGENDUM 1
Page 6
Préface, après le premier paragraphe, insérer:
Elle constitue la deuxième partie de la CEI 265; elle annule et remplace
la première édition de la CEI 265 (1968) ainsi que la CEI 265 A (1969),
265 B (1969) et 265 C (1970) pour les interrupteurs à haute tension de
tension assignée égale ou supérieure à 52 kV.
Page 7
Preface, after the first paragraph, insert:
It forms Part 2 of IEC 265 and supersedes the first edition of IEC 265
(1968) as well as IEC 265 A (1969), 265 B (1969) and 265 C (1970) for
high-voltage switches for rated voltages of 52 kV and above.
February 1990
Février 1990
265-2 (1) © I E C 3
CONTENTS
Page
FOREWORD 7
PREFACE 7
Clause
1. Scope and object 9
2. Normal and special service conditions 11
3. Definitions 11
3.101 Switch 11
3.102 Switch-disconnector 11
3.103 General-purpose switch 11
3.104 Limited-purpose switch 11
3.105 Special-purpose switch 11
3.106 Single capacitor bank switch 11
3.107 Back-to-back capacitor bank switch 11
3.108 Shunt reactor switch 13
3.109 Breaking capacity 13
3.110 Mainly active load breaking capacity 13
3.111 No-load transformer breaking capacity 13
3.112 Closed-loop breaking capacity 13
3.113 Cable-charging breaking capacity 13
3.114 Line-charging breaking capacity 13
3.115 Bus-bar charging breaking capacity 13
3.116 Single capacitor bank breaking capacity 13
3.117 Back-to-back capacitor bank breaking capacity 13
3.118 Capacitor bank inrush current 13
3.119 Shunt reactor breaking capacity 13
3.120 Earth-fault breaking capacity 15
3.121 Cable and line charging breaking capacity under earth fault conditions 15
3.122 Breaking current 15
3.123 (Peak) making current 15
3.124 Short-circuit making capacity 15
4. Rating 15
4.1 Rated voltage 15
4.2 Rated insulation level 15
4.3 Rated frequency 15
4.4 Rated normal current and temperature rise 15
4.5 Rated short-time withstand current 15
4.6 Rated peak withstand current 15
4.7 circuit Rated duration of short 15
4.8 Rated supply voltage of closing and opening devices and auxiliary circuits 17
4.9 Rated supply frequency of operating devices and auxiliary circuits 17
4.10 Rated pressure of compressed gas supply for operation 17
4.101 Rated mainly active load-breaking current 17
4.102 Rated closed-loop breaking current 17
4.103 Rated no-load transformer breaking current 17
4.104 Rated cable-charging breaking current 17
4.105 Rated line-charging breaking current 17

265-2 (1) © I E C – 5 –
4.106 Rated single capacitor bank breaking current 17
4.107 Rated back-to-back capacitor bank breaking current
4.108 Rated capacitor bank inrush making current
4.109 Rated shunt reactor breaking current
4.110 Rated short-circuit making current
4.111 Rated earth fault breaking current
4.112 Rated cable and line-charging breaking current under earth fault conditions 19
4.113 Rated mechanical terminal load
4.114 Coordination of rated values for general-purpose switch 19
4.115 Coordination of rated values for limited-purpose and special-purpose switches 21
5. Design and construction
5.1 Requirements for liquids in high-voltage switches
5.2 Requirements for gases in high-voltage switches
5.3 Earthing of high-voltage switches
5.4 Auxiliary equipment
5.5 Dependent power closing
5.6 Stored-energy closing 21
5.7 Operation of releases
5.8 Low and high pressure interlocking devices
5.9 Nameplates
5.101 Closing mechanism
5.102 Mechanical strength
5.103 Position of the movable contact system and its indicating or signalling device
6. Type tests 23
6.1 Dielectric tests
Radio interference voltage (RIV) tests 27
6.2
Temperature rise tests 27
6.3
6.4 Measurement of the resistance of the main circuit
6.5 Short-time withstand current and peak withstand current tests
6.101 Making and breaking tests
6.102 Mechanical operation tests
6.103 Operation under severe ice conditions
6.104 Verification of operation during application of rated mechanical terminal loads.
7. Routine tests 57
Power frequency voltage withstand dry tests on the main circuit 57
7.1
7.101 Mechanical operating tests 57
8. Guide to the selection of high-voltage switches for service
8.101 General
8.102 Conditions affecting application
8.103 Insulation coordination
9. Information to be given with enquiries, tenders and orders
9.101 Information to be given with enquiries and orders
9.102 Information to be given with tenders 61
10. Rules for transport, storage, erection and maintenance
FIGURES 87
– 7 –
265-2 (1) © I E C
INTERNATIONAL ELECTROTECHNICAL COMMISSION
HIGH-VOLTAGE SWITCHES
Part 2:
High-voltage switches for rated voltages of 52 kV and above
FOREWORD
The formal decisions or agreements of the I E Con technical matters, prepared by Technical Committees on which all the
1)
National Committees having a special interest therein are represented, express, as nearly as possible, an international
consensus of opinion on the subjects dealt with.
2) They have the form of recommendations for international use and they are accepted by the National Committees in that
sense.
3) In order to promote international unification, the I E C expresses the wish that all National Committees should adopt the
text of the IEC recommendation for their national rules in so far as national conditions will permit. Any divergence
between the I E C recommendation and the corresponding national rules should, as far as possible, be clearly indicated in
the latter.
PREFACE
This standard has been prepared by IEC Sub-Committee 17A: High-voltage switchgear and
controlgear, of IEC Technical Committee No. 17: Switchgear and controlgear.
The text of this standard is based upon the following documents:
on Voting
Six Months' Rule Report
17A(CO)197 I, II 17A(CO)203
Full information on the voting for the approval of this standard can be found in the Voting Repo rt
indicated in the above table.
The following IEC publications are quoted in this standard:
Publications Nos. 50 (441) (1984): International Electrotechnical Vocabulary (IEV), Chapter 441: Switchgear,
controlgear and fuses.
56 (1987): High-voltage alternating-current circuit breakers.
59 (1938): IEC standard current ratings.
71-1(1976): Insulation co-ordination, Pa rt 1: Terms, definitions, principles and rules.
129 (1984): Alternating current disconnectors (isolators) and earthing switches.
137 (1984): Bushings for alternating voltages above 1000 V.
270 (1981): Partial discharge measurements.
694 (1980): Common clauses for high-voltage switchgear and controlgear standards.

265-2 (1) © I E C — 9
HIGH-VOLTAGE SWITCHES
Part 2:
High-voltage switches for rated voltages of 52 kV and above
1. Scope
This standard is applicable to three-phase alternating-current switches, having making and
breaking current ratings, for indoor and outdoor installations, for rated voltages 52kV and
above; and for rated frequencies up to and including 60 Hz.
This standard is also applicable to the operating devices of these switches and to their
auxiliary equipment.
Notes 1. — Switches for gas insulated switchgear are covered by this standard.
2. — Switches having a disconnecting function and called switch-disconnectors are also covered by IEC
Publication 129.
3. — Earthing switches are not covered by this standard. Earthing switches forming an integral pa rt of a switch
are covered by IEC Publication 129.
1.101 Object
The main object of this standard is to establish requirements for switches used in
transmission and dist ribution systems. General-purpose switches for this application shall
comply with the following service applications:
— carrying rated normal current continuously;
— carrying short-circuit currents for a specified time;
— switching of mainly active loads;
— switching of no-load transformers;
— switching of the charging current of unloaded cables, overhead lines or busbars;
— switching of closed-loop circuits;
— making short-circuit currents.
A further object of this standard is to establish requirements for limited-purpose and special-
purpose switches used in transmission and dist ribution systems.
Limited-purpose switches shall comply with one or more of the se rvice applications indicated
above.
Special-purpose switches may comply with one or more of the se rvice applications indicated
above and, in addition, shall be suitable for one or more of the following applications:
switching single capacitor banks;
—
— switching back-to-back capacitor banks;
— switching shunt reactors including secondary or tertiary reactors switched from the primary
side of the transformer;
— applications requiring an increased number of operating cycles;
— switching under earth fault conditions in systems with isolated neutral or in resonant earthed
systems.
– 11 –
265-2 (1) © I E C
2. Normal and special service conditions
IE C Publication 694 is applicable.
3. Definitions
For the definitions of general terms used in this standard, reference is made to the IEC
Publications 50 (441) and 71-1.
3.101 Switch (441-14-10)
A switching device capable of making, carrying and breaking currents under normal circuit
conditions, which may include specified operating overload conditions and also carrying for a
specified time currents under specified abnormal circuit conditions, such as those of short-
circuit.
3.102 Switch-disconnector (441-14-12)
A switch which, in the open position, satisfies the isolating requirements specified for a
disconnector.
3.103 General-purpose switch
A switch capable of performing, with currents up to its rated breaking currents, all making
and breaking operations which may normally occur. The switch shall also be capable of
carrying and making short-circuit currents.
Note. — Refer to Sub-clause 4.114 for specific ratings of a general-purpose switch.
3.104 Limited purpose switch
A switch which complies with one or more, but not with all, service applications of a general-
purpose switch.
3.105 Special-purpose switch
A switch suitable for switching requirements other than those specified for a géneral-purpose
switch.
Examples of such requirements are capacitor bank switching, shunt reactor switching, switching under
Note. —
earth fault conditions, and a capability of an increased number of operating cycles.
3.106 Single capacitor bank switch
A special-purpose switch intended for switching of a single capacitor bank with charging
currents up to its rated single capacitor bank breaking current.
3.107 Back-to-back capacitor bank switch
A special-purpose switch intended for breaking capacitor bank-charging currents, with one
or more capacitor banks connected to the bus or supply side of the switch, up to its rated back-
to-back capacitor bank breaking current. The switch shall be capable of making the associated
inrush current, up to its rated capacitor bank inrush making current.
3.108
Shunt reactor switch
A special-purpose switch intended for switching a shunt reactor, including secondary or
tertiary reactors switched from the primary side of the transformer.

265-2 (1) © IEC – 13 –
3.109 Breaking capacity* (441-17-08)
3.110 Mainly active load breaking capacity
The breaking capacity when opening a mainly active load circuit in which the load can be
represented by resistors and reactors in parallel.
3.111 No-load transformer breaking capacity
The breaking capacity when opening a no-load transformer circuit.
3.112
Closed-loop breaking capacity
The breaking capacity w
...