IEC 62271-111:2012

IEC 62271-111
Edition 2.0 2012-09
™
IEEE C37.60
INTERNATIONAL
STANDARD
colour
inside
High-voltage switchgear and controlgear –
Part 111: Automatic circuit reclosers and fault interrupters for alternating current
systems up to 38 kV
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IEC 62271-111
Edition 2.0 2012-09
IEEE C37.60™
INTERNATIONAL
STANDARD
colour
inside
High-voltage switchgear and controlgear –

Part 111: Automatic circuit reclosers and fault interrupters for alternating current

systems up to 38 kV
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XF
ICS 29.130.10 ISBN 978-2-83220-332-3

– 2 – IEC 62271-111:2012(E)
IEEE Std C37.60-2012(E)
CONTENTS
FOREWORD . 11

1 Overview . 14

1.1 Scope . 14

1.2 Normative references . 14

2 Normal and special service conditions . 15

2.101 General . 15

2.102 Normal service conditions . 16
2.102.1 Indoor switchgear and controlgear . 16
2.102.2 Outdoor switchgear and controlgear . 16
2.103 Special service conditions . 17
2.103.1 General . 17
2.103.2 Altitude . 17
2.103.3 Pollution . 17
2.103.4 Temperature and humidity . 18
2.103.5 Vibrations, shock, or tilting . 18
2.103.6 Wind speed . 18
2.103.7 Other special (unusual) service conditions . 18
3 Terms and definitions . 18
3.1 General terms . 19
3.2 Assemblies of switchgear and controlgear . 21
3.3 Parts of assemblies . 21
3.4 Switching devices . 21
3.5 Parts of switchgear and controlgear . 21
3.6 Operation . 21
3.7 Characteristic quantities . 22
3.8 Index of definitions . 23
4 Ratings . 23
4.1 Rated voltage (U ) . 24
r
4.2 Rated insulation level . 25
4.3 Rated frequency (f ) . 26
r
4.4 Rated normal current and temperature rise. 26
4.4.1 Rated normal current (I ) . 26

r
4.4.2 Temperature rise . 27
4.4.3 Particular points of Table 4 . 29
4.5 Rated short-time withstand current (I ) . 30
k
4.6 Rated peak withstand current (I ) . 31
p
4.7 Rated duration of short-circuit (t ) . 31
k
4.8 Rated supply voltage of closing and opening devices and of auxiliary and
control circuits (U ) . 31
a
4.9 Rated supply frequency of closing and opening devices and of auxiliary
circuits . 31
4.10 Rated pressure of compressed gas supply for controlled pressure systems . 31
4.11 Rated filling levels for insulation and/or operation. 31
4.101 Rated minimum tripping current (I ) . 31
>min
4.102 Rated symmetrical interrupting current (short-circuit breaking current) . 32
Published by IEC under license from IEEE. © 2012 IEEE. All rights reserved.

IEEE Std C37.60-2012(E)
4.103 Transient recovery voltage related to rated symmetrical interrupting

current . 32

4.103.1 General . 32

4.103.2 Representation of TRV waves . 32

4.103.3 Representation of TRV . 33

4.103.4 Standard values of TRV related to the rated short-circuit breaking

current . 34

4.103.4.1 General . 34

4.103.4.2 First-pole-to-clear factor (k ) . 35
pp
4.103.4.3 Rate of rise of recovery voltage (RRRV) . 36
4.104 Rated symmetrical making current (short-circuit making current) . 43
4.105 Rated operating sequence . 45
4.106 Rated line and cable charging interrupting currents . 45
5 Design and construction . 45
5.1 Requirements for liquids in switchgear and controlgear . 45
5.1.1 Liquid level . 45
5.1.2 Liquid quality . 46
5.1.3 Oil sampling provision (submersible reclosers/FIs) . 46
5.2 Requirements for gases in switchgear and controlgear . 46
5.3 Earthing of switchgear and controlgear . 46
5.4 Auxiliary and control equipment . 46
5.5 Dependent power operation . 46
5.6 Stored energy operation . 46
5.7 Independent manual operation or power operation (independent unlatched
operation) . 46
5.8 Operation of releases . 47
5.8.1 Shunt closing release . 47
5.8.2 Shunt opening release . 47
5.8.3 Capacitor operation of shunt releases . 47
5.8.4 Under-voltage release . 47
5.9 Low- and high- pressure interlocking devices and monitoring devices . 47
5.10 Nameplates . 48
5.11 Interlocking devices . 49
5.12 Position indication . 50
5.13 Degrees of protection provided by enclosures . 50

5.13.1 Protection of persons against access to hazardous parts and
protection of the equipment against ingress of solid foreign
objects (IP coding) . 50
5.13.2 Protection against ingress of water (IP coding) . 50
5.13.3 Protection of equipment against mechanical impact under normal
service conditions (IK coding) . 50
5.13.101 Enclosure design and coating system requirements . 50
5.14 Creepage distances for outdoor insulators . 50
5.15 Gas and vacuum tightness . 51
5.15.1 Controlled pressure systems for gas . 51
5.15.2 Closed pressure systems for gas . 51
5.15.3 Sealed pressure systems . 51
5.15.101 Design and withstand . 51
5.15.102 Leak rate . 51
Published by IEC under license from IEEE. © 2012 IEEE. All rights reserved.

– 4 – IEC 62271-111:2012(E)
IEEE Std C37.60-2012(E)
5.16 Liquid tightness . 52

5.17 Fire hazard (flammability) . 52

5.18 Electromagnetic compatibility (EMC) .
...