High-voltage switchgear and controlgear - Part 100: High-voltage alternating-current circuit-breakers

Corrigendum to A2 issued November 2006 * Superseded by EN 62271-100:2009

Hochspannungs-Schaltgeräte und -Schaltanlagen - Teil 100: Hochspannungs-Wechselstrom-Leistungsschalter

Appareillage à haute tension - Partie 100: Disjoncteurs à courant alternatif à haute tension

Visokonapetostne stikalne in krmilne naprave - 100. del: Izmenični odklopniki – Revizija TRV in posebni preskusi za odklopnike za napetosti nad 1 kV in do 100 kV (IEC 62271-100:2001/A2:2006)

General Information

Status
Withdrawn
Publication Date
19-Oct-2006
Current Stage
6060 - Document made available
Due Date
20-Oct-2006
Completion Date
20-Oct-2006

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Standards Content (sample)

SLOVENSKI SIST EN 62271-
100:2002/oprA2:2005
PREDSTANDARD
april 2005
Visokonapetostne stikalne in krmilne naprave – 100. del: Izmenični odklopniki
– Revizija TRV in posebni preskusi za odklopnike za napetosti nad 1 kV in do
100 kV
High-voltage switchgear and controlgear – Part 100: Alternating current circuit-

breakers – Revision of TRV and special tests for circuit-breakers with rated voltage

above 1 kV and less than 100 kV
ICS 29.130.10 Referenčna številka
SIST EN 62271-
100:2002/oprA2:2005(en)

© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

---------------------- Page: 1 ----------------------
17A/719A/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJET DE COMITÉ POUR VOTE (CDV)
Project number IEC 62271-100, A2, Ed.1 *
Numéro de projet
IEC/TC or SC: Date of circulation Closing date for voting (Voting
SC 17A
Date de diffusion mandatory for P-members)
CEI/CE ou SC:
Date de clôture du vote (Vote
2005-02-11
obligatoire pour les membres (P))
(2004-12-17)
2005-05-20 **
Titre du CE/SC: APPAREILLAGE A HAUTE TC/SC Title: HIGH-VOLTAGE SWITCHGEAR AND
TENSION CONTROLGEAR
Secretary: Mr. A. Bosma (Sweden)
Secrétaire: E-mail: anne.bosma@se.abb.com
Also of interest to the following committees Supersedes documents
Intéresse également les comités suivants Remplace les documents
SC 17C, SC 32A 17A/686/CD – 17A/701/CC and item 6.1 of
17A/715/RM
Functions concerned
Fonctions concernées
Safety EMC Environment Quality assurance
Sécurité
CEM Environnement Assurance qualité

CE DOCUMENT EST TOUJOURS À L'ÉTUDE ET SUSCEPTIBLE DE THIS DOCUMENT IS STILL UNDER STUDY AND SUBJECT TO CHANGE. IT

MODIFICATION. IL NE PEUT SERVIR DE RÉFÉRENCE. SHOULD NOT BE USED FOR REFERENCE PURPOSES.

LES RÉCIPIENDAIRES DU PRÉSENT DOCUMENT SONT INVITÉS À RECIPIENTS OF THIS DOCUMENT ARE INVITED TO SUBMIT, WITH THEIR

PRÉSENTER, AVEC LEURS OBSERVATIONS, LA NOTIFICATION DES COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF

DROITS DE PROPRIÉTÉ DONT ILS AURAIENT ÉVENTUELLEMENT WHICH THEY ARE AWARE AND TO PROVIDE SUPPORTING

CONNAISSANCE ET À FOURNIR UNE DOCUMENTATION EXPLICATIVE. DOCUMENTATION.

Titre : Amendement 2 à la CEI 62271-100, Ed.1: Title : Amendment 2 to IEC 62271-100, Ed.1:

Révision des Tensions Transitoires de Revision of TRV and special tests for circuit-

Rétablissement et essais spéciaux pour breakers with rated voltage above 1 kV and less

disjoncteurs de tension assignée supérieure à 1 than 100 kV
kV et inférieure à 100 kV
Note d'introduction Introductory note
* Anciennement CEI 62271-100, A2, f1, Ed.1 * Former IEC 62271-100, A2, f1, Ed.1

** La date de clôture du vote reste inchangée. ** The closing date remains unchanged.

IEC CO note: The NC comments and observations in document 17A/701/CC were discussed, as

mentioned above, at the SC 17A plenary meeting held in Seoul. Further information on these discussions

and subsequent modifications to the observations can be found in document 17A/715/RM, item 6.1.

This document cancels and replaces document 17A/719/CDV. This document is also of

interest to SC 17C and SC 32A.
ATTENTION ATTENTION
CDV soumis en parallèle au vote (CEI) Parallel IEC CDV/CENELEC Enquiry
et à l’enquête (CENELEC)

Copyright © 2005 International Electrotechnical Commission, IEC. All rights reserved. It is

permitted to download this electronic file, to make a copy and to print out the content for the sole

purpose of preparing National Committee positions. You may not copy or "mirror" the file or

printed version of the document, or any part of it, for any other purpose without permission in

writing from IEC.
FORM CDV (IEC)
2002-08-09
---------------------- Page: 2 ----------------------
62271-100 Amend 2 Ed. 1/CDV © IEC – 2 –
Revision of TRV and special tests for circuit-breakers with rated voltage
above 1 kV and less than 100 kV
Introductory note (not part of the amendment)

Following the decision taken at the SC 17A meeting in Beijing (CN) in October, 2002, IEC SC

17A/WG 35 has prepared a proposal for the revision of TRVs for circuit-breakers rated above

1 kV and less than 100 kV. In this CDV the decisions taken during the SC17A meetings in

Montreal (CA) in October, 2003, and Seoul (KR) in October, 2004, are implemented.

This proposal uses the input coming from former Working groups of CIGRE Study Committee

A3 (Switching Equipment) that have studied the necessity to adapt the TRV requirements for

circuit-breakers rated less than 100 kV. In 1983, a CIGRE SC A3 Task Force reported on

Transient Recovery Voltages in Medium Voltage Networks. The results of the study have been

published in Electra 88. Another working group, WG 13.05, studied the TRVs generated by

clearing transformer fed faults and transformer secondary faults. The results have been

presented in Electra 102 (1985). In 1992, together with CIRED, CIGRE SCA3 created the

Working group CC-03 to investigate again the definition of TRVs for medium voltage switching

devices. The outcome of these investigations has been published in CIGRE Technical

Brochure 134 (1998) and is in line with earlier studies.
The main modifications introduced in this amendment are summarized below.

a) In order to cover all types of networks (distribution, industrial and sub-transmission) in the

range of rated voltages higher than 1 kV and less than 100 kV, and for standardization

purposes, two types of systems are defined:
- Cable systems

Cable-systems have a TRV during breaking of terminal fault at 100% of short-circuit breaking

current that does not exceed the two-parameter envelope derived from Table 24 of this

standard.

Note 1: This definition is restricted to systems of rated voltages higher than 1 kV and less than 100 kV.

Note 2: Circuit-breakers of indoor substations with cable connection are in cable-systems.

Note 3: A circuit-breaker in an outdoor substation with cable-connection to overhead-lines is considered to be in a

cable-system if the total length of cable connected on the supply side of the circuit-breaker is at least 100 m.

Note 4: The capacitance of cable-systems on the supply side of circuit-breakers is provided by cables and/or

capacitors and/or insulated bus.
- Line systems

Line systems have a TRV during breaking of terminal fault at 100% of short-circuit breaking

current defined by the two-parameter envelope derived from Table 25 of this standard.

Note 1: This definition is restricted to systems of rated voltages higher than 1 kV and less than 100 kV.

Note 2: In line-systems, no cable is connected on the supply side of the circuit-breaker, with the possible exception

of a short length of cable between the circuit-breaker and the line(s) or the supply transformer.

Note 3: Systems with transmission lines directly connected to a busbar (without intervening cable connections) are

typical examples of line-systems.

b) A particular test duty T30 is specified for the special case of circuit-breakers intended to

be connected to a transformer with a connection of small capacitance (cable length less

than 20 m), in order to verify their capability to interrupt transformer-limited faults. This is

covered in a new normative Annex M.

In the general case where the capacitance of the connection is high enough, the normal

test duty T30 demonstrates the capability to interrupt transformer-limited faults.

c) Short-line fault is a mandatory duty for circuit-breakers with rated voltages 15 kV and

above and directly connected to overhead lines. As specified for circuit-breakers rated 52

kV and above, the rated short-circuit current must be higher than 12,5 kA (i.e. I ≥ 16 kA).

---------------------- Page: 3 ----------------------
62271-100 Amend 2 Ed. 1/CDV © IEC – 3 –

d) The special case of circuit-breakers installed immediately in series with a reactor is

covered in a new subclause 8.103.7.

The main content of this introductory note and additional technical explanations on the

introduced changes in TRVs for circuit-breakers rated less than 100 kV are given in a new

informative Annex L. This Annex should be transferred later to the application guide to IEC

62271-100.

It is to be noted that a corresponding revision of TRVs is undertaken by ANSI/IEEE, and that

both revisions would lead to fully harmonized TRVs for circuit-breakers rated higher than 1 kV

and less than 100 kV.

In addition, WG35 proposes to modify Figure 13 (Three-phase short-circuit representation)

and figure 14 (alternative representation of Figure 13), to indicate that the source neutral

impedance is not necessarily an inductance, but could be also a capacitance or a combination

of impedances.
---------------------- Page: 4 ----------------------
62271-100 Amend 2 Ed. 1/CDV © IEC – 4 –
FOREWORD

This amendment has been prepared by subcommittee 17A: High-voltage switchgear and

controlgear, of IEC Technical Committee 17: Switchgear and controlgear.
The text of this amendment is based on the following documents:
FDIS Report on voting
17A/XX/FDIS 17A/XX/RVD

Full information on the voting for the approval of this amendment can be found in the report

on voting indicated in the above Table.

The committee has decided that the contents of the base publication and its amendments will

remain unchanged until (to be completed later). At this date, the publication will be

• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
_____________
Page 7
Contents
Add new annexes L and M to the list of contents

Annex L (informative) Explanatory notes on the revision of TRVs for circuit-breakers of rated

voltages higher than 1 kV and less than 100 kV.

Annex M (normative) Requirements for breaking of transformer-limited faults by circuit-

breakers rated higher than 1 kV and less than 100 kV.
Page 33
Add the following definitions after 3.4.118:
3.4.119
cable system

cable-systems have a TRV during breaking of terminal fault at 100% of short-circuit breaking

current that does not exceed the two-parameter envelope derived from Table 24 of this

standard.

NOTE 1 This definition is restricted to systems of rated voltages higher than 1 kV and less than 100 kV.

NOTE 2 Circuit-breakers of indoor substations with cable connection are in cable-systems.

NOTE 3 A circuit-breaker in an outdoor substation with cable-connection to overhead-lines is considered to be in a

cable-system if the total length of cable connected on the supply side of the circuit-breaker is at least 100 m.

NOTE The capacitance of cable-systems on the supply side of circuit-breakers is provided by cables and/or

capacitors and/or insulated bus.
3.4.120
line system

line systems have a TRV during breaking of terminal fault at 100% of short-circuit breaking

current defined by the two-parameter envelope derived from Table 25 of this standard.

---------------------- Page: 5 ----------------------
62271-100 Amend 2 Ed. 1/CDV © IEC – 5 –

NOTE 1 This definition is restricted to systems of rated voltages higher than 1 kV and less than 100 kV.

NOTE 2 In line-systems, no cable is connected on the supply side of the circuit-breaker, with the possible

exception of a short length of cable between the circuit-breaker and the line(s) or the supply transformer.

NOTE 3 Systems with transmission lines directly connected to a busbar (without intervening cable connections)

are typical examples of line-systems.
3.4.121
circuit-breaker class CS
circuit-breaker intended to be used in a cable system.
3.4.122
circuit-breaker class LS
circuit-breaker intended to be used in a line-system .
Page 57
3.8 Index of definitions
Add the following definitions after circuit breaker class M2
Cable system 3.4.119
Line system 3.4.120
Circuit-breaker class CS 3.4.121
Circuit-breaker class LS 3.4.122
Page 65
4. Rating
Replace the existing item p) by the following:

p) characteristics for short-line faults related to the rated short-circuit breaking current, for

circuit-breakers designed for direct connection to overhead transmission lines and rated at

15 kV and above and at more than 12,5 kA rated short-circuit breaking current;
Page 75
4.102.2 Representation of TRV
Replace the existing items b) and c) by the following:
b) Two-parameter reference line (see figure 11):
u = reference voltage (TRV peak value), in kilovolts;
t = time in microseconds.

TRV parameters are defined as a function of the rated voltage (U ), the first-pole-to-clear

factor (k ) and the amplitude factor (k ) as follows:
pp af
u = k × k (2/3)× U
c pp af r
where k is equal to
1,4 for terminal fault in the case of cable systems;
---------------------- Page: 6 ----------------------
62271-100 Amend 2 Ed. 1/CDV © IEC – 6 –
1,54 for terminal fault and short-line fault, in the case of line systems;
1,25 for out-of-phase.
t for the supply side circuit for short-line fault = t (terminal fault)..
t for out-of-phase = 2 × t (terminal fault).
3 3
c) Delay line of TRV (see figures 10 and 11):
t = time delay, microseconds;
u’ = reference voltage, in kilovolts;
t’ = time to reach u’, in microseconds

The delay line starts on the time axis at the rated time delay and runs parallel to the first

section of the reference line of rated TRV and terminates at the voltage u’ (time co-

ordinate t’).
For rated voltages lower than 100 kV:

t = 0,15 × t , for terminal fault and out-of-phase in the case of cable systems;

d 3

t = 0,05 × t , for terminal fault and short-line-fault in the case of line systems;

d 3
t = 0,15 × t , for out-of-phase in the case of line systems;
d 3
u’ = u /3 ;
t’ is derived from t and t according to figure 11, t’ = t + t /3.
d 3 d 3
For rated voltages equal or higher than 100 kV:
t = 0,21 × t or 2 µs for terminal fault and short-line fault;
d 1
t = 0,1 × t for out-of-phase;
d 1
u’ = u /2 ;

t’ is derived from u’, u /t (RRRV) and t according to figure 10, t’ = t + u’/RRRV.

1 1 d d
Page 77

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

Replace the first paragraph by the following:

Standard values of TRV for three-pole circuit-breakers of rated voltages less than 100 kV

make use of two parameters. Values are given in:
- Table 24, for cable systems;
- Table 25, for line systems;
Replace the existing 4 paragraph by the following:

The values given in the tables are prospective values. They apply to circuit-breakers for

general transmission and distribution in three-phase systems having service frequencies of

50 Hz or 60 Hz and consisting of transformers, overhead lines and cables.
---------------------- Page: 7 ----------------------
62271-100 Amend 2 Ed. 1/CDV © IEC – 7 –
Replace the existing item b) by the following:

b) circuit-breakers directly connected to transformers without appreciable additional

capacitance between the circuit-breaker and the transformer which provides approximately

50 % or more of the rated short-circuit breaking-current of the circuit-breaker. However the

special case of circuit-breakers of rated voltage less than 100 kV with a connection of low

capacitance to a transformer is covered in Annex M.
Replace the existing item c) by the following:

c) circuit-breakers in substations with series reactors (information is given in 8.103.7 and L.5

for circuit-breakers rated less than 100 kV);
Replace the 6 paragraph by the following:

The transient recovery voltage corresponding to the rated short-circuit breaking current when

a terminal fault occurs, is used for testing at short-circuit breaking currents equal to the rated

value. However, for testing with short-circuit breaking currents less than 100 % of the rated

value, other values of transient recovery voltage are specified (see 6.104.5). Further

additional requirements apply to circuit-breakers designed for direct connection to overhead

transmission lines, rated at 15 kV and above and having rated short-circuit breaking currents

exceeding 12,5 kA, which may be operated in short-line fault conditions (see 4.105).

Page 79
Table 1a
Replace Table 1a by the following Tables 24 and 25:

Table 24 – Standard values of transient recovery voltage for circuit-breakers in cable-

systems - Rated voltage less than 100 kV – Representation by two parameters
Rated Type of test First-pole- Ampli- TRV Time Time Voltage Time a
RRRV
voltage to-clear tude peak delay
factor factor value
U k k u t t u’ t’ u /t
r pp af c 3 d c 3
kV p.u. p.u. kV µs µs kV µs kV/µs
Terminal 1,5 1,4 6,2 41 6 2,1 20 0,15
fault
3,6
Out-of- 2,5 1,25 9,2 82 12 3,1 40 0,11
phase
Terminal 1,5 1,4 8,2 44 7 2,7 21 0,19
fault
4,76
Out-of- 2,5 1,25 12,1 88 13 4,0 43 0,14
phase
Terminal 1,5 1,4 12,3 51 8 4,1 25 0,24
fault
7,2
Out-of- 2,5 1,25 18,4 102 15 6,1 49 0,18
phase
Terminal 1,5 1,4 14,1 52 8 4,7 25 0,27
fault
8,25
Out-of- 2,5 1,25 21,1 105 16 7,0 50 0,20
phase
---------------------- Page: 8 ----------------------
62271-100 Amend 2 Ed. 1/CDV © IEC – 8 –
Terminal 1,5 1,4 20,6 61 9 6,9 29 0,34
fault
Out-of- 2,5 1,25 30,6 112 17 10,2 54 0,27
phase
Terminal 1,5 1,4 25,7 66 10 8,6 32 0,39
fault
Out-of- 2,5 1,25 38,3 132 20 12,8 64 0,29
phase
Terminal 1,5 1,4 30 71 11 10,0 34 0,42
fault
17,5
Out-of- 2,5 1,25 44,7 143 21 14,9 69 0,31
phase
Terminal 1,5 1,4 41,2 87 13 13,7 42 0,47
fault
Out-of- 2,5 1,25 61,2 174 26 20,4 84 0,35
phase
Terminal 1,5 1,4 44,2 91 14 14,7 44 0,49
fault
25,8
Out-of- 2,5 1,25 65,8 182 27 21,9 88 0,36
phase
Terminal 1,5 1,4 61,7 109 16 20,6 53 0,57
fault
Out-of- 2,5 1,25 91,9 217 32 30,6 105 0,42
phase
Terminal 1,5 1,4 65,2 109 16 21,7 53 0,60
fault
Out-of- 2,5 1,25 97,0 217 33 32,3 105 0,45
phase
Terminal 1,5 1,4 82,8 125 19 27,6 60 0,66
fault
48,3
Out-of- 2,5 1,25 123 250 38 41,1 121 0,49
phase
Terminal 1,5 1,4 89,2 131 20 29,7 63 0,68
fault
Out-of- 2,5 1,25 133 262 39 44,2 127 0,51
phase
Terminal 1,5 1,4 124 165 25 41,4 80 0,75
fault
72,5
Out-of- 2,5 1,25 185 330 50 61,7 159 0,56
phase
RRRV = rate of rise of recovery voltage
Used in North America
---------------------- Page: 9 ----------------------
62271-100 Amend 2 Ed. 1/CDV © IEC – 9 –

Table 25 – Standard values of transient recovery voltage for circuit-breakers in line

systems - Rated voltage less than 100 kV – Representation by two parameters
Rated Type of test First-pole- Ampli- TRV Time Time Voltage Time a
RRRV
voltage to-clear tude peak delay
factor factor value
U k k u t t u’ t’ u /t
r pp af c 3 d c 3
kV p.u. p.u. kV µs µs kV µs kV/µs
b Terminal fault 1,5 1,54 28,3 31 2 9,4 12 0,91
Short-line 1 1,54 18,9 31 2 6,3 12 0,61
fault
Out-of-phase 2,5 1,25 38,3 62 9 12,8 30 0,62
17,5 Terminal fault 1,5 1,54 33,0 34 2 11,0 13 0,97
Short-line 1 1,54 22,0 34 2 7,3 13 0,65
fault
Out-of-phase 2,5 1,25 45 69 10 14,9 33 0,65
24 Terminal fault 1,5 1,54 45,3 43 2 15,1 16 1,05
Short-line 1 1,54 30,2 43 2 10,1 16 0,70
fault
Out-of-phase 2,5 1,25 61 86 13 20,4 42 0,71
b Terminal fault 1,5 1,54 48,7 45 2 16,2 17 1,08
25,8
Short-line 1 1,54 32,4 45 2 10,8 17 0,72
fault
Out-of-phase 2,5 1,25 66 90 13 21,9 43 0,73
36 Terminal fault 1,5 1,54 67,9 57 3 22,6 22 1,19
Short-line 1 1,54 45,3 57 3 15,1 22 0,79
fault
Out-of-phase 2,5 1,25 92 114 17 30,6 55 0,81
b Terminal fault 1,5 1,54 71,7 59 3 23,9 23 1,21
Short-line 1 1,54 47,8 59 3 15,9 23 0,81
fault
Out-of-phase 2,5 1,25 97 118 18 32,3 57 0,82
b Terminal fault 1,5 1,54 91,1 70 4 30,4 27 1,30
48,3
Short-line 1 1,54 60,7 70 4 20,2 27 0,87
fault
Out-of-phase 2,5 1,25 123 140 21 41,1 68 0,88
52 Terminal fault 1,5 1,54 98,1 74 4 32,7 36 1,33
Short-line 1 1,54 65,4 74 4 21,8 28 0,88
fault
Out-of-phase 2,5 1,25 133 148 22 44,2 71 0,90
72,5 Terminal fault 1,5 1,54 137 93 5 45,6 36 1,47
Short-line 1 1,54 91,2 93 5 30,4 36 0,98
fault
Out-of-phase 2,5 1,25 185 186 28 61,7 90 0,99
RRRV = rate of rise of recovery voltage
Used in North America

For short-line faults: transient recovery voltage and time quantities are those of the supply circuit.

---------------------- Page: 10 ----------------------
62271-100 Amend 2 Ed. 1/CDV © IEC – 10 –
Page 85

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

Replace the heading of Table 2 by the following:

Table 2 – Standard multipliers for transient recovery voltage values for second and

third clearing poles for rated voltages 1 kV and above.
Page 85

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

Replace NOTE 1 by the following:
NOTE 1 Values for rated voltages less than 100 kV are under consideration.
Page 89
4.105 Characteristics for short-line faults
Replace the text of subclause 4.105 by the following:

Characteristics for short-line faults are required for circuit-breakers designed for direct

connection to transmission lines (without intervening cable connections) and having a rated

voltage of 15 kV and above and a rated short-circuit breaking current exceeding 12,5 kA.

These characteristics relate to the breaking of a single-phase earth fault in a system with

earthed neutral, where the first-pole-to-clear factor is equal to 1,0.

NOTE In this standard, a single-phase test at phase-to-earth voltage covers all types of short-line fault (see Annex

L.3).

The short-line fault circuit is composed of a supply circuit on the source side of the circuit-

breaker and a short-line on its load side (see figure 15), with the following characteristics:

a) supply circuit characteristics:

- voltage equal to the phase-to-earth voltage U /√3 corresponding to the rated voltage U

r r
of the circuit-breaker;

- short-circuit current, in case of terminal fault, equal to the rated short-circuit breaking

current of the circuit-breaker;

- prospective transient recovery voltage, in case of short-line fault, given by the

standard values in

Table 25, for circuit-breakers in line systems with rated voltages less than 100 kV ;

Table 1b, for circuit-breakers with rated voltages from 100 kV up to and including

170kV;
Table 1c, for circuit-breakers with rated voltages 245 kV and above.

- ITRV characteristics for circuit-breakers of 100 kV and above derived from Table 3.

b) line characteristics:

- standard values of the RRRV factor, based on a surge impedance Z of 450 Ω, the peak

factor k and the line side time delay t are given in Table 4. For determination of the

line side time delay and the rate-of-rise of the line side voltage, see figure 16;

---------------------- Page: 11 ----------------------
62271-100 Amend 2 Ed. 1/CDV © IEC – 11 –

- the method for calculation of transient recovery voltages from the characteristics is

given in Annex A.
Table 4 - Standard values of line characteristics for short-line faults
Rated Number of Surge Peak RRRV factor Time
voltage conductors impedance factor delay
per phase 50 Hz I 60 Hz
U Z k s* t
r dL
Ω (kV/µs)/kA
kV µs
15 ≤ U ≤ 38 1 450 1.6 0,200 0,240 0,1
1 to 4 450 1,6 0,200 0,240 0,2
48,3 ≤ U ≤ 170
U ≥ 245 1 to 4 450 1,6 0,200 0,240 0,5

NOTE These values cover the short-line faults dealt with in this standard. For very short lines

(t < 5t ) not all requirements as given in the Table can be met. The procedures for approaching very

L dL

short lines will be given in the application guide to this standard (currently prepared by CIGRE WG A3-

11).
* For the RRRV factor s, see Annex A.
Page 91
4.106 Rated out-of-phase making and breaking current
Replace item b) by the following:
b) the transient recovery voltage shall be in accordance with:

- Table 24, for circuit-breakers in cable systems with rated voltages less than 100 kV;

- Table 25, for circuit-breakers in line systems with rated voltages less than 100 kV;

- Table 1b, for circuit-breakers with rated voltages from 100 kV up to and including

170kV;
- Table 1c, for circuit-breakers with rated voltages 245 kV and above.
Page 113
Table 6 - Nameplate information
Replace the row on classification with the following:
Classification y If different from E1, C1, M1,
CS for rated voltages less
than 100 kV.
If different from E1, C1, M1
for rated voltages 100 kV
and above
Page 205
---------------------- Page: 12 ----------------------
62271-100 Amend 2 Ed. 1/CDV © IEC – 12 –
6.104.5.1 General
Replace the 5 paragraph and item a) by the following:

TRV parameters are defined as follows as a function of the rated voltage (U ), the first-pole-

to-clear factor (k ) and the amplitude factor (k ). The actual values of k and k are stated

pp af pp af

in tables 24, 25, 1b, 1c, 26, 27, 14a and 14b. The first-pole-to-clear factor kpp is 1,3 as listed

in table 14a for all circuit-breakers rated 100 kV and above where systems are usually solidly

earthed. For isolated earthed or resonant earthed systems from 100 kV to 170 kV, kpp = 1,5

as listed in table 14b.
a) For rated voltages less than 100 kV

A representation by two parameters of the prospective TRV is used for all test-duties.

- In Table 26, for circuit-breakers in cable systems

TRV peak value u = k × k (2/3)× U where k is equal to 1,4 for test-duty T100, 1,5

c pp af r af

for test-duty T60, 1,6 for test duty T30 and 1,7 for test duty T10, 1,25 for out-of-phase

breaking.

Time t for test-duty T100 is taken from Table 24. Time t for test-duties T60, T30 and T10

3 3

is obtained by multiplying the time t for test-duty T100 by 0,44 (for T60), 0,22 (for T30)

and 0,22 (for T10).
- In Table 27, for circuit-breakers in line systems
TRV peak value u = k × k (2/3)× U where k is equal to 1,54 for test-duty T100
c pp af r af

and the supply side circuit for short-line fault, 1,65 for test-duty T60, 1,74 for test duty T30

and 1,8 for test duty T10, 1,25 for out-of-phase breaking.

Time t for test-duty T100 is taken from Table 25 Time t for test-duties T60, T30 and T10

3 3

is obtained by multiplying the time t for test-duty T100 by 0,67 (for T60), 0,40 (for T30)

and 0,40 (for T10).

- Time delay t for test-duty T100 is 0,15 × t for cable systems, 0,05 × t for line systems,

d 3 3
0,05 × t for the supply side circuit for short-line fault.

- Time delay t is 0,15 × t for test-duties T60, T30 and T10 and for out-of-phase breaking.

d 3
- Voltage u'=u /3.
- Time t' is derived from u', t and t according to figure 11, t’ = t + t /3.
3 d d 3
Page 211
6.104.5.2 Test duties T100s and T100a
Replace the first 5 paragraphs by the following:
For rated voltages less than 100 kV, the specified standard values are given in
- Table 26, for circuit-breakers in cable systems,
- Table 27 for circuit-breakers in line systems;

For rated voltages of 100 kV and above, the specified standard values are given in Tables

14a and 14b.

The specific reference lines, delay lines and ITRV are given by the standard values in Tables

24, 25, 1b, 1c, 2 and 3.
---------------------- Page: 13 ----------------------
62271-100 Amend 2 Ed. 1/CDV © IEC – 13 –

With reference to ITRV, if a test is made with a TRV following the straight reference line

specified in requirement b) of 6.104.5.1 and shown in Figure 12 b, it is assumed that the

effect on the circuit-breaker is similar to that of any ITRV defined in requirement b) of

6.104.5.1 and Figure 12 b.

Owing to limitations of the testing station, it may not be feasible to comply with the

requirement of item b) of 6.104.5.1 with respect to the time delay t as specified in tables 1b

or 1c. Where short-line fault duties are also to be performed, any such deficiency of the TRV

of the supply circuit shall be compensated by an increase of the voltage excursion to the first

peak of the line-side voltage (see 6.109.3). The time delay of the supply circuit shall be as

small as possible, but shall in any case not exceed the values given in brackets in Table 27 or

Table 14a or Table 14b.
Page 211
6.104.5.3 Test-duty T60
Replace the text of subclause 6.104.5.3 by the following:
For rated voltages less than 100 kV, the specified standard values are given in
- Table 26, for circuit-breakers in cable systems,
- Table 27 for circuit-breakers in line systems;

For rated voltages of 100 kV and above, the specified standard values are given in Table 14a

and Table 14b.
Page 211
6.104.5.4 Test-duty T30
Replace the text of subclause 6.104.5.4 by the following:

a) For rated voltages less than 100 kV, the specified standard values are given in

- Table 26, for circuit-breakers in cable systems,
- Table 27 for circuit-breakers in line systems;

In direct or synthetic testing, it may be difficult to meet the small values of time t . The

shortest time that can be met should be used but not less than the values specified. The

values used shall be stated in the test report.

b) For rated voltages of 100 kV and above, the specified standard values are given in

Tables 14a and 14b.

NOTE The contribution of transformers to the short-circuit current is relatively larger at smaller values of short-

circuit current as in T30 and T10 conditions. However, most systems have solidly earthed neutrals at ratings of

100 kV and above. With the system and transformer neutrals solidly earthed, the first-pole-to-clear factor of 1,3 is

applicable for all test duties. In some systems for rated voltages of 100 kV up to and including 170 kV,

transformers with non-solidly earthed neutrals are in service, even though the rest of the system may have solidly

earthed neutrals. Such systems are considered special cases and are covered in Tables 1c and 14b where the

TRVs specified for all test duties are based o
...

SLOVENSKI STANDARD
SIST EN 62271-100:2002/A2:2007
01-december-2007
9LVRNRQDSHWRVWQHVWLNDOQHLQNUPLOQHQDSUDYH±GHO,]PHQLþQLRGNORSQLNL±

5HYL]LMD759LQSRVHEQLSUHVNXVL]DRGNORSQLNH]DQDSHWRVWLQDGN9LQGRN9

,(&$

High-voltage switchgear and controlgear -- Part 100: High-voltage alternating-current

circuit-breakers (IEC 62271-100:2001/A2:2006)
Hochspannungs-Schaltgeräte und -Schaltanlagen -- Teil 100: Hochspannungs-
Wechselstrom-Leistungsschalter (IEC 62271-100:2001/A2:2006)

Appareillage a haute tension -- Partie 100: Disjoncteurs a courant alternatif a haute

tension (IEC 62271-100:2001/A2:2006)
Ta slovenski standard je istoveten z: EN 62271-100:2001/A2:2006
ICS:
29.130.10 Visokonapetostne stikalne in High voltage switchgear and
krmilne naprave controlgear
SIST EN 62271-100:2002/A2:2007 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
EUROPEAN STANDARD
EN 62271-100/A2
NORME EUROPÉENNE
October 2006
EUROPÄISCHE NORM
ICS 29.130.10 Incorporates Corrigendum November 2006
English version
High-voltage switchgear and controlgear
Part 100: High-voltage alternating-current circuit-breakers
(IEC 62271-100:2001/A2:2006)
Appareillage à haute tension Hochspannungs-Schaltgeräte und
Partie 100: Disjoncteurs à courant -Schaltanlagen
alternatif à haute tension Teil 100: Hochspannungs-Wechselstrom-
(CEI 62271-100:2001/A2:2006) Leistungsschalter
(IEC 62271-100:2001/A2:2006)

This amendment A2 modifies the European Standard EN 62271-100:2001; it was approved by CENELEC on

2006-10-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which

stipulate the conditions for giving this amendment the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on

application to the Central Secretariat or to any CENELEC member.

This amendment exists in three official versions (English, French, German). A version in any other language

made by translation under the responsibility of a CENELEC member into its own language and notified to the

Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, the Czech

Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,

Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 62271-100:2001/A2:2006 E
---------------------- Page: 2 ----------------------
EN 62271-100:2001/A2:2006 - 2 -
Foreword

The text of document 17A/754/FDIS, future amendment 2 to IEC 62271-100:2001, prepared by SC 17A,

High-voltage switchgear and controlgear, of IEC TC 17, Switchgear and controlgear, was submitted to the

IEC-CENELEC parallel vote and was approved by CENELEC as amendment A2 to EN 62271-100:2001

on 2006-10-01.
The following dates were fixed:
– latest date by which the amendment has to be
implemented at national level by publication of
(dop) 2007-07-01
an identical national standard or by endorsement
– latest date by which the national standards conflicting
(dow) 2009-10-01
with the amendment have to be withdrawn
Annex ZB has been added by CENELEC.

The contents of the corrigendum of November 2006 have been included in this copy.

__________
Endorsement notice

The text of amendment 2:2006 to the International Standard IEC 62271-100:2001 was approved by

CENELEC as an amendment to the European Standard without any modification.
__________
---------------------- Page: 3 ----------------------
- 3 - EN 62271-100:2001/A2:2006
Annex ZB
(informative)
A-deviations

A-deviation: National deviation due to regulations, the alteration of which is for the time being outside the

competence of the CENELEC national member.
This European Standard does not fall under any Directive of the EC.

In the relevant CENELEC countries these A-deviations are valid instead of the provisions of the European

Standard until they have been removed.
Clause Deviation
(*)

1.1 Italy (I.S.P.E.S.L. Rules, 95 revision: VSR.8.B.1; VSR.8.B.2; M.15.D.2 to .4.)

For high-voltage alternating current circuit-breakers containing gas-filled compartments,

the design pressure is limited to a maximum of 0,5 bar (gauge) and the volume is limited

to a maximum of 2 m . Gas filled compartments having a design pressure exceeding
0,5 bar (gauge) or a volume exceeding 2 m shall be designed according to Italian
pressure vessel code for electrical switchgear (DM 1 December 1980 and DM
10 September 1981 published on Gazzetta Ufficiale n° 285 dated 16.10.1981). This

requirement is not applicable for gas filled compartments having a design pressure

exceeding 0,5 bar (gauge) but a volume not exceeding 25 dm .

Italian laws apply to gas pressurized enclosures made of both insulating and metallic

materials with a capacity of 25 litres or above, a design pressure higher than 0,05 kg/cm

and a temperature range: -25 °C/+100 °C (only for insulating materials).
Moreover the manufacturer of any electrical equipment which comprehends gas

pressurized enclosures must submit the design of the pressurized enclosures itself to a

proper legal Authority indicating the stresses and the loads which have any influence on

the design itself. For each of the stresses the manufacturer must indicate the design

values and the relevant computations.
Only the use of porcelain type A or S (Aluminous or Siliceous) is permitted.
(*)
I.S.P.E.S.L.: Istituto Superiore per la Prevenzione e la Sicurezza del Lavoro.
__________
---------------------- Page: 4 ----------------------
INTERNATIONAL IEC
STANDARD 62271-100
2001
AMENDMENT 2
2006-07
Amendment 2
High-voltage switchgear and controlgear –
Part 100:
High-voltage alternating-current circuit-breakers
This English-language version is derived from the original
bilingual publication by leaving out all French-language
pages. Missing page numbers correspond to the French-
language pages.
© IEC 2006 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: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch

PRICE CODE
Commission Electrotechnique Internationale
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue
---------------------- Page: 5 ----------------------
62271-100 Amend. 2  IEC:2006 – 3 –
FOREWORD

This amendment has been prepared by subcommittee 17A: High-voltage switchgear and

controlgear, of IEC Technical Committee 17: Switchgear and controlgear.
The text of this amendment is based on the following documents:
FDIS Report on voting
17A/754/FDIS 17A/761/RVD

Full information on the voting for the approval of this amendment can be found in the report

on voting indicated in the above table.

The committee has decided that the contents of this amendment and the base publication will

remain unchanged until the maintenance result date indicated on the IEC web site under

"http://webstore.iec.ch" in the data related to the specific publication. At this date, the

publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
_____________
Page 7
CONTENTS
Add, to the list, the following new Annexes L and M:

Annex L (informative) Explanatory notes on the revision of TRVs for circuit-breakers of rated

voltages higher than 1 kV and less than 100 kV

Annex M (normative) Requirements for breaking of transformer-limited faults by circuit-

breakers with rated voltage higher than 1 kV and less than 100 kV
Page 25
3 Definitions
Add, on page 31, the following definitions after 3.1.127:
3.1.128
effectively earthed neutral system

system earthed through a sufficiently low impedance such that for all system conditions the

ratio of the zero-sequence reactance to the positive-sequence reactance (X /X ) is positive

0 1

and less than 3, and the ratio of the zero-sequence resistance to the positive-sequence

reactance (R /X ) is positive and less than 1. Normally such systems are solidly earthed

0 1
(neutral) systems or low impedance earthed (neutral) systems

NOTE For the correct assessment of the earthing conditions not only the physical earthing conditions around the

relevant location but the total system is to be considered.
---------------------- Page: 6 ----------------------
62271-100 Amend. 2  IEC:2006 – 5 –
3.1.129
non-effectively earthed neutral system

system other than effectively earthed neutral system, not meeting the conditions given in

3.1.128. Normally such systems are isolated neutral systems, high impedance earthed

(neutral) systems or resonant earthed (neutral) systems

NOTE For the correct assessment of the earthing conditions not only the physical earthing conditions around the

relevant location but the total system is to be considered.
Add, on page 33, the following definitions after 3.4.118:
3.4.119
cable system

system in which the TRV during breaking of terminal fault at 100 % of short-circuit breaking

current does not exceed the two-parameter envelope derived from Table 24 of this standard

NOTE 1 This definition is restricted to systems of rated voltages higher than 1 kV and less than 100 kV.

NOTE 2 Circuit-breakers of indoor substations with cable connection are generally in cable-systems.

NOTE 3 A circuit-breaker in an outdoor substation is considered to be in a cable-system if the total length of

cable (or equivalent length when capacitors are also present) connected on the supply side of the circuit-breaker is

at least 100 m. However if in an actual case with an equivalent length of cable shorter than 100 m a calculation can

show that the actual TRV is covered by the envelope defined from Table 24, then this system is considered as a

cable system.

NOTE 4 The capacitance of cable-systems on the supply side of circuit-breakers is provided by cables and/or

capacitors and/or insulated bus.
3.4.120
line system

system in which the TRV during breaking of terminal fault at 100 % of short-circuit breaking

current is covered by the two-parameter envelope derived from Table 25 of this standard and

exceeds the two-parameter envelope derived from Table 24 of this standard

NOTE 1 This definition is restricted to systems of rated voltages equal to or higher than 15 kV and less than

100 kV.

NOTE 2 In line-systems, no cable is connected on the supply side of the circuit-breaker, with the possible

exception of a total length of cable less than 100 m between the circuit-breaker and the supply transformer(s).

NOTE 3 Systems with overhead lines directly connected to a busbar (without intervening cable connections) are

typical examples of line-systems.
3.4.121
circuit-breaker class S1
circuit-breaker intended to be used in a cable system
3.4.122
circuit-breaker class S2

circuit-breaker intended to be used in a line-system, or in a cable-system with direct

connection (without cable) to overhead lines
Page 55
3.8 Index of definitions
Add the following definitions in the list of index:
---------------------- Page: 7 ----------------------
62271-100 Amend. 2  IEC:2006 – 7 –

Cable system................................................................................................................ 3.4.119

Circuit-breaker class S1................................................................................................ 3.4.121

Circuit-breaker class S2................................................................................................ 3.4.122

Effectively earthed neutral system ................................................................................ 3.1.128

Line system .................................................................................................................. 3.4.120

Non-effectively earthed neutral system ......................................................................... 3.1.129

Page 63
4 Rating
Replace, on page 65, the existing item p) by the following:

p) characteristics for short-line faults related to the rated short-circuit breaking current, for

circuit-breakers designed for direct connection to overhead lines, irrespective of the type

of network on the source side, and rated at 15 kV and above and at more than 12,5 kA

rated short-circuit breaking current;
Page 73
4.102.2 Representation of TRV
Replace, on page 75, the existing items b) and c) by the following:
b) Two-parameter reference line (see Figure 11):
u = reference voltage (TRV peak value), in kV;
t = time in µs.

TRV parameters are defined as a function of the rated voltage (U ), the first-pole-to-clear

factor (k ) and the amplitude factor (k ) as follows:
pp af
u = k × k (2/3 ) × U
c pp af r
where k is equal to
1,4 for terminal fault in the case of cable systems;
1,54 for terminal fault and short-line fault, in the case of line systems;
1,25 for out-of-phase;
t for the supply side circuit for short-line fault = t (terminal fault).
t for out-of-phase = 2 × t (terminal fault).
3 3
---------------------- Page: 8 ----------------------
62271-100 Amend. 2  IEC:2006 – 9 –
c) Delay line of TRV (see Figures 10 and 11):
t = time delay, in microseconds;
u’ = reference voltage, in kilovolts;
t’ = time to reach u’, in microseconds

The delay line starts on the time axis at the rated time delay and runs parallel to the first

section of the reference line of rated TRV and terminates at the voltage u’ (time co-

ordinate t’).
For rated voltages lower than 100 kV:

t = 0,15 × t , for terminal fault and out-of-phase in the case of cable systems;

d 3

t = 0,05 × t , for terminal fault and short-line-fault in the case of line systems;

d 3
t = 0,15 × t , for out-of-phase in the case of line systems;
d 3
u’ = u /3 ;
t’ is derived from t and t according to Figure 11, t’ = t + t /3.
d 3 d 3
For rated voltages equal or higher than 100 kV:

t = 2 µs for terminal fault and for the supply side circuit for short-line fault;

t = 2 µs to 0,1 × t for out-of-phase;
d 1
u’ = u /2 ;

t’ is derived from u’, u /t (RRRV) and t according to Figure 10, t’ = t + u’/RRRV.

1 1 d d
Page 77

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

Replace the first paragraph by the following:

Standard values of TRV for three-pole circuit-breakers of rated voltages less than 100 kV

make use of two parameters. Values are given in:
– Table 24, for cable systems;
– Table 25, for line systems.
Replace the fourth paragraph by the following:

The values given in the tables are prospective values. They apply to circuit-breakers for

general transmission and distribution in three-phase systems having service frequencies of

50 Hz or 60 Hz and consisting of transformers, overhead lines and cables.
Replace the existing item b) by the following:

b) circuit-breakers directly connected to transformers without appreciable additional

capacitance between the circuit-breaker and the transformer which provides approximately

50 % or more of the rated short-circuit breaking-current of the circuit-breaker. However the

special case of circuit-breakers of rated voltage less than 100 kV with a connection of low

capacitance to a transformer is covered in Annex M.
---------------------- Page: 9 ----------------------
62271-100 Amend. 2  IEC:2006 – 11 –
Replace the existing item c) by the following:

c) circuit-breakers in substations with series reactors (information is given in 8.103.7 and in

Clause L.5 for circuit-breakers rated less than 100 kV);
Replace the sixth paragraph by the following:

The transient recovery voltage corresponding to the rated short-circuit breaking current when

a terminal fault occurs, is used for testing at short-circuit breaking currents equal to the rated

value. However, for testing with short-circuit breaking currents less than 100 % of the rated

value, other values of transient recovery voltage are specified (see 6.104.5). Further

additional requirements apply to circuit-breakers designed for direct connection to overhead

lines, rated at 15 kV and above and having rated short-circuit breaking currents exceeding

12,5 kA, which may be operated in short-line fault conditions (see 4.105).
Page 77

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

Replace, on page 79, title and Table 1a by the following tables:
---------------------- Page: 10 ----------------------
62271-100 Amend. 2  IEC:2006 – 13 –

Table 24 – Standard values of transient recovery voltage for class S1 circuit-breakers –

Rated voltage higher than 1 kV and less than 100 kV –
Representation by two parameters
Rated Type of test First-pole- Ampli- TRV Time Time Voltage Time RRRV
voltage to-clear tude peak delay
factor factor value
u /t
c 3
U k k u u’ t’
r pp af c t3 td
kV/µs
kV p.u. p.u. kV µs µs kV µs
Terminal 1,5 1,4 6,2 41 6 2,1 20 0,15
fault
3,6
Out-of- 2,5 1,25 9,2 82 12 3,1 40 0,11
phase
Terminal 1,5 1,4 8,2 44 7 2,7 21 0,19
fault
4,76
Out-of- 2,5 1,25 12,1 88 13 4,0 43 0,14
phase
Terminal 1,5 1,4 12,3 51 8 4,1 25 0,24
fault
7,2
Out-of- 2,5 1,25 18,4 102 15 6,1 49 0,18
phase
Terminal 1,5 1,4 14,1 52 8 4,7 25 0,27
fault
8,25
Out-of- 2,5 1,25 21,1 104 16 7,0 50 0,20
phase
Terminal
1,5 1,4 20,6 61 9 6,9 29 0,34
fault
Out-of-
2,5 1,25 30,6 122 18 10,2 59 0,25
phase
Terminal 1,5 1,4 25,7 66 10 8,6 32 0,39
fault
Out-of- 2,5 1,25 38,3 132 20 12,8 64 0,29
phase
Terminal 1,5 1,4 30 71 11 10,0 34 0,42
fault
17,5
Out-of- 2,5 1,25 44,7 142 21 14,9 69 0,31
phase
Terminal 1,5 1,4 41,2 87 13 13,7 42 0,47
fault
Out-of- 2,5 1,25 61,2 174 26 20,4 84 0,35
phase
Terminal 1,5 1,4 44,2 91 14 14,7 44 0,49
fault
25,8
Out-of- 2,5 1,25 65,8 182 27 21,9 88 0,36
phase
Terminal 1,5 1,4 61,7 109 16 20,6 53 0,57
fault
Out-of-
2,5 1,25 91,9 218 33 30,6 105 0,42
phase
Terminal 1,5 1,4 65,2 109 16 21,7 53 0,60
fault
Out-of- 2,5 1,25 97,0 218 33 32,3 105 0,45
phase
Terminal 1,5 1,4 82,8 125 19 27,6 60 0,66
fault
48,3
Out-of- 2,5 1,25 123 250 38 41,1 121 0,49
phase
Terminal 1,5 1,4 89,2 131 20 29,7 63 0,68
fault
Out-of- 2,5 1,25 133 262 39 44,2 127 0,51
phase
Terminal 1,5 1,4 124 165 25 41,4 80 0,75
fault
72,5
Out-of- 2,5 1,25 185 330 50 61,7 160 0,56
phase
RRRV = rate of rise of recovery voltage.
Used in North America.
---------------------- Page: 11 ----------------------
62271-100 Amend. 2  IEC:2006 – 15 –

Table 25 – Standard values of transient recovery voltage for class S2 circuit-breakers –

Rated voltage equal to or higher than 15 kV and less than 100 kV –
Representation by two parameters
Rated Type of test First-pole- Ampli- TRV Time Time Voltage Time RRRV
voltage to-clear tude peak delay
factor factor value
u /t
c 3
U k k u t t u’ t’
r pp af c 3 d
kV/µs
kV p.u. p.u. kV µs µs kV µs
15 Terminal fault 1,5 1,54 28,3 31 2 9,4 12 0,91
Short-line 1 1,54 18,9 31 2 6,3 12 0,61
fault
Out-of-phase 2,5 1,25 38,3 62 9 12,8 30 0,62
17,5 Terminal fault 1,5 1,54 33,0 34 2 11,0 13 0,97
Short-line 1 1,54 22,0 34 2 7,3 13 0,65
fault
Out-of-phase 2,5 1,25 45 68 10 14,9 33 0,65
24 Terminal fault 1,5 1,54 45,3 43 2 15,1 16 1,05
Short-line 1 1,54 30,2 43 2 10,1 16 0,70
fault
Out-of-phase 2,5 1,25 61 86 13 20,4 42 0,71
25,8 Terminal fault 1,5 1,54 48,7 45 2 16,2 17 1,08
Short-line 1 1,54 32,4 45 2 10,8 17 0,72
fault
Out-of-phase 2,5 1,25 66 90 14 21,9 44 0,73
36 Terminal fault 1,5 1,54 67,9 57 3 22,6 22 1,19
Short-line 1 1,54 45,3 57 3 15,1 22 0,79
fault
Out-of-phase 2,5 1,25 92 114 17 30,6 55 0,81
38 Terminal fault 1,5 1,54 71,7 59 3 23,9 23 1,21
Short-line 1 1,54 47,8 59 3 15,9 23 0,81
fault
Out-of-phase 2,5 1,25 97 118 18 32,3 57 0,82
48,3 Terminal fault 1,5 1,54 91,1 70 4 30,4 27 1,30
Short-line 1 1,54 60,7 70 4 20,2 27 0,87
fault
Out-of-phase 2,5 1,25 123 140 21 41,1 68 0,88
52 Terminal fault 1,5 1,54 98,1 74 4 32,7 28 1,33
Short-line 1 1,54 65,4 74 4 21,8 28 0,88
fault
Out-of-phase 2,5 1,25 133 148 22 44,2 72 0,90
72,5 Terminal fault 1,5 1,54 137 93 5 45,6 36 1,47
Short-line 1 1,54 91,2 93 5 30,4 36 0,98
fault
Out-of-phase 2,5 1,25 185 186 28 61,7 90 0,99
RRRV = rate of rise of recovery voltage.
Used in North America.

For short-line faults: transient recovery voltage and time quantities are those of the supply circuit. Short-line fault is

only applicable for circuit-breakers designed for direct connection to overhead lines.

---------------------- Page: 12 ----------------------
62271-100 Amend. 2  IEC:2006 – 17 –
Replace, on page 85 and Amendment 1, the heading of Table 2 by the following:

Table 2 – Standard multipliers for transient recovery voltage values for second and

third clearing poles for rated voltages above 1 kV
Replace, on page 85, NOTE 1 by the following:
NOTE 1 Values for rated voltages less than 100 kV are under consideration.
Page 89
4.105 Characteristics for short-line faults
Replace the existing text of 4.105 by the following:

Characteristics for short-line faults are required for class S2 circuit-breakers designed for

direct connection to overhead lines (without intervening cable connections) and having a rated

voltage of 15 kV and above and a rated short-circuit breaking current exceeding 12,5 kA.

These characteristics relate to the breaking of a single-phase earth fault in a system with

earthed neutral, where the first-pole-to-clear factor is equal to 1,0.

NOTE In this standard, a single-phase test at phase-to-earth voltage covers all types of short-line fault (see

Annex L, Clause L.3).

The short-line fault circuit is composed of a supply circuit on the source side of the circuit-

breaker and a short-line on its load side (see Figure 15), with the following characteristics:

a) supply circuit characteristics:

– voltage equal to the phase-to-earth voltage U /√3 corresponding to the rated voltage U

r r
of the circuit-breaker;

– short-circuit current, in case of terminal fault, equal to the rated short-circuit breaking

current of the circuit-breaker;

− prospective transient recovery voltage, in case of short-line fault, given by the

standard values in

ƒ Table 25, for circuit-breakers in line systems with rated voltages less than 100 kV ;

ƒ Tables 1b and 1c, for circuit-breakers with rated voltages from 100 kV up to and

including 170 kV;
ƒ Table 1d, for circuit-breakers with rated voltages 245 kV and above.

– ITRV characteristics for circuit-breakers of 100 kV and above derived from Table 3.

b) line characteristics:

– standard values of the RRRV factor, based on a surge impedance Z of 450 Ω, the peak

factor k and the line side time delay t are given in Table 4. For determination of the

line side time delay and the rate-of-rise of the line side voltage, see Figure 16;

− the method for calculation of transient recovery voltages from the characteristics is

given in Annex A.
---------------------- Page: 13 ----------------------
62271-100 Amend. 2  IEC:2006 – 19 –
Replace, on page 91, the existing Table 4, by the following new table:
Table 4 – Standard values of line characteristics for short-line faults
Rated Number of Surge Peak RRRV factor Time
voltage conductors impedance factor delay
per phase 50 Hz I 60 Hz
U Z k s* t
r dL
Ω (kV/µs)/kA µs
1 450 1,6 0,200 0,240 0,1
15 ≤ U ≤ 38
48,3 ≤ U ≤ 170 1 to 4 450 1,6 0,200 0,240 0,2
1 to 4 450 1,6 0,200 0,240 0,5
U ≥ 245

NOTE These values cover the short-line faults dealt with in this standard. For very short lines

(t < 5t ) not all requirements as given in the table can be met. The procedures for approaching very

L dL

short lines will be given in the application guide to this standard (currently prepared by CIGRE WG A3-

11).
* For the RRRV factor s, see Annex A.
Page 91
4.106 Rated out-of-phase making and breaking current
Replace the existing item b) by the following:
b) the transient recovery voltage shall be in accordance with:

– Table 24, for circuit-breakers in cable systems with rated voltages less than 100 kV;

– Table 25, for circuit-breakers in line systems with rated voltages less than 100 kV;

– Tables 1b and 1c, for circuit-breakers with rated voltages from 100 kV up to and

including 170 kV;
– Table 1d, for circuit-breakers with rated voltages 245 kV and above.
Page 111
Table 6 – Nameplate information
Replace, on page 113, the row on classification with the following:
Abbrevi- Unit Circuit- Operating Condition:
ation breaker device Marking only required if
Classification y If different from E1, C1, M1,
S1 for rated voltages less
than 100 kV
If different from E1, C1, M1
for rated voltages 100 kV
and above
---------------------- Page: 14 ----------------------
62271-100 Amend. 2  IEC:2006 – 21 –
Page 119
Table 7 – Type tests
Replace “short-line fault tests *” by the following:
* #

Short-line fault tests (U ≥ 15 kV and I > 12,5 kA, in case of direct connection to

r sc
overhead lines in systems with earthed neutral)
Page 203 and Amendment 1
6.104.5.1 General
Replace, on page 205, the fifth paragraph and item a) by the following:

TRV parameters are defined as follows as a function of the rated voltage (U ), the first-pole-

to-clear factor (k ) and the amplitude factor (k ). The actual values of k and k are stated

pp af pp af

in Tables 24, 25, 1b, 1c, 26, 27, 14a and 14b. The first-pole-to-clear factor kpp is 1,3 as listed

in Table 14a for all circuit-breakers rated 100 kV and above where systems are usually

effectively earthed. For non-effectively earthed systems from 100 kV to 170 kV, kpp = 1,5 as

listed in Table 14b.
a) For rated voltages less than 100 kV

A representation by two parameters of the prospective TRV is used for all test-duties.

– In Table 26, for circuit-breakers in cable systems.
u = k × k (2/3 ) × U where k is equal to 1,4 for test-duty T100, 1,5
TRV peak value
c pp af r af

for test-duty T60, 1,6 for test duty T30 and 1,7 for test duty T10, 1,25 for out-of-phase

breaking.

Time t for test-duty T100 is taken from Table 24. Time t for test-duties T60, T30 and T10

3 3

is obtained by multiplying the time t for test-duty T100 by 0,44 (for T60), 0,22 (for T30)

and 0,22 (for T10).
– In Table 27, for circuit-breakers in line systems.

TRV peak value u = k × k (2/3 ) × U where k is equal to 1,54 for test-duty T100 and

c pp af r

the supply side circuit for short-line fault, 1,65 for test-duty T60, 1,74 for test duty T30 and

1,8 for test duty T10, 1,25 for out-of-phase breaking.

Time t for test-duty T100 is taken from Table 25 Time t for test-duties T60, T30 and T10

3 3

is obtained by multiplying the time t for test-duty T100 by 0,67 (for T60), 0,40 (for T30)

and 0,40 (for T10).

– Time delay t for test-duty T100 is 0,15 × t for cable systems, 0,05 × t for line systems,

d 3 3
0,05 × t for the supply side circuit for short-line fault.

– Time delay t is 0,15 × t for test-duties T60, T30 and T10 and for out-of-phase breaking.

d 3
– Voltage u'=u /3.
– Time t' is derived from u', t and t according to Figure 11, t’ = t + t /3.
3 d d 3
---------------------- Page: 15 ----------------------
62271-100 Amend. 2  IEC:2006 – 23 –
Page 207 and Amendment 1
6.104.5.2 Test duties T100s and T100a
Replace the first five paragraphs by the following:
For rated voltages less than 100 kV, the specified standard values are given in
– Table 26 for circuit-breakers in cable systems,
– Table 27 for circuit-breakers in line systems.

For rated voltages of 100 kV and above, the specified standard values are given in Tables

14a and 14b.

The specific reference lines, delay lines and ITRV are given by the standard values in Tables

24, 25, 1b, 1c, 1d, 2 and 3.

With reference to ITRV, if a test is made with a TRV following the straight reference line

specified in requirement b) of 6.104.5.1 and shown in Figure 12b, it is assumed that the effect

on the circuit-breaker is similar to that of any ITRV defined in requirement b) of 6.104.5.1 and

Figure 12b.

Owing to limitations of the testing station, it may not be feasible to comply with the

requirement of item b) of 6.104.5.1 with respect to the time delay t as specified in Tables 1b,

1c or 1d. Where short-line fault duties are also to be performed, any such deficiency of the

TRV of the supply circuit shall be compensated by an increase of the voltage excursion to the

first peak of the line-side voltage (see 6.109.3). The time delay of the supply circuit shall be

as small as possible, but shall in any case not exceed the values given in brackets in Table

27 or Table 14a or Table 14b.
Page 209 and Amendment 1
6.104.5.3 Test-duty T60
Replace the text of 6.104.5.3
...

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