SIST EN 62271-112:2014
(Main)High-voltage switchgear and controlgear - Part 112: Alternating current high-speed earthing switches for secondary arc extinction on transmission lines
High-voltage switchgear and controlgear - Part 112: Alternating current high-speed earthing switches for secondary arc extinction on transmission lines
This part of IEC 62271 applies to a.c. high-speed earthing switches designed for indoor and outdoor installation and for operation at service frequencies of 50 Hz and 60 Hz on systems having voltages of 550 kV and above. High-speed earthing switches described in this standard are intended to extinguish the secondary arc remaining after clearing faults on transmission lines by the circuit-breakers.
Hochspannungs-Schaltgeräte und -Schaltanlagen - Teil 112: Schnellschaltender Wechselstrom-Erdungsschalter zum Löschen von sekundären Lichtbögen auf Freileitungen
Appareillage à haute tension - Partie 112: Sectionneurs de terre rapides à courant alternatif pour l’extinction de l’arc secondaire sur les lignes de transport
La CEI 62271-112:2013 s'applique aux sectionneurs de terre rapides à courant alternatif conçus pour les installations intérieures et extérieures et pour fonctionner à des fréquences utiles de 50 Hz et 60 Hz sur des réseaux de tensions supérieures ou égales à 550 kV. Les sectionneurs de terre rapides décrits dans la présente norme sont destinés à supprimer l'arc secondaire demeurant après l'élimination des défauts sur les lignes de transport par les disjoncteurs.
Visokonapetostne stikalne in krmilne naprave - 112. del: Hitra ozemljitvena stikala na izmenični tok za ugašanje sekundarnega obloka na prenosnih vodih (IEC 62271-112:2013)
Ta del standarda IEC 62271 velja za hitra ozemljitvena stikala na izmenični tok, zasnovana za namestitev v notranjih prostorih ali na prostem ter delovanje pri storitvenih frekvencah 50 in 60 Hz v sistemih z napetostmi 550 kV in več. Hitra ozemljitvena stikala, opisana v tem standardu, so namenjena ugašanju sekundarnega obloka, ki ostane po odpravljanju težav na prenosnih vodih, povzročenih zaradi odklopnikov.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 62271-112:2014
01-junij-2014
9LVRNRQDSHWRVWQHVWLNDOQHLQNUPLOQHQDSUDYHGHO +LWUDR]HPOMLWYHQDVWLNDOD
QDL]PHQLþQLWRN]DXJDãDQMHVHNXQGDUQHJDREORNDQDSUHQRVQLKYRGLK ,(&
High-voltage switchgear and controlgear - Part 112: Alternating current high-speed
earthing switches for secondary arc extinction on transmission lines
Hochspannungs-Schaltgeräte und -Schaltanlagen - Teil 112: Schnellschaltender
Wechselstrom-Erdungsschalter zum Löschen von sekundären Lichtbögen auf
Freileitungen
Appareillage à haute tension - Partie 112: Sectionneurs de terre rapides à courant
alternatif pour l’extinction de l’arc secondaire sur les lignes de transport
Ta slovenski standard je istoveten z: EN 62271-112:2013
ICS:
29.130.10 Visokonapetostne stikalne in High voltage switchgear and
krmilne naprave controlgear
SIST EN 62271-112:2014 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 62271-112:2014
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SIST EN 62271-112:2014
EUROPEAN STANDARD
EN 62271-112
NORME EUROPÉENNE
October 2013
EUROPÄISCHE NORM
ICS 29.130.10; 29.130.99
English version
High-voltage switchgear and controlgear -
Part 112: Alternating current high-speed earthing switches for secondary
arc extinction on transmission lines
(IEC 62271-112:2013)
Appareillage à haute tension - Hochspannungs-Schaltgeräte und -
Partie 112: Sectionneurs de terre rapides Schaltanlagen -
à courant alternatif pour l’extinction de Teil 112: Schnellschaltende
l’arc secondaire sur les lignes de transport Wechselstrom-Erdungsschalter zum
(CEI 62271-112:2013) Löschen von sekundären
Lichtbögen auf Freileitungen
(IEC 62271-112:2013)
This European Standard was approved by CENELEC on 2013-09-10. CENELEC members are bound to comply
with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
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 CEN-CENELEC Management Centre or to any CENELEC member.
This European Standard 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 CEN-CENELEC Management Centre has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus,
the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany,
Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B - 1000 Brussels
© 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 62271-112:2013 E
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SIST EN 62271-112:2014
EN 62271-112:2013 - 2 -
Foreword
The text of document 17A/1042/FDIS, future edition 1 of IEC 62271-112, prepared by
subcommittee 17A, High-voltage switchgear and controlgear, of IEC/TC 17, "Switchgear and
controlgear" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
EN 62271-112:2013.
The following dates are fixed:
(dop) 2014-06-10
• latest date by which the document has
to be implemented at national level by
publication of an identical national
standard or by endorsement
(dow) 2016-09-10
• latest date by which the national
standards conflicting with the
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 62271-112:2013 was approved by CENELEC as a
European Standard without any modification.
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SIST EN 62271-112:2014
- 3 - EN 62271-112:2013
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year
IEC 62271-1 2007 High-voltage switchgear and controlgear - EN 62271-1 2008
Part 1: Common specifications
IEC 62271-100 2008 High-voltage switchgear and controlgear - EN 62271-100 2009
Part 100: Alternating current circuit-breakers
IEC 62271-102 2001 High-voltage switchgear and controlgear - EN 62271-102 2002
+ corr. April 2002 Part 102: Alternating current disconnectors + corr. July 2008
+ corr. February 2005 and earthing switches + corr. March 2005
+ corr. May 2003
IEC 62271-203 2011 High-voltage switchgear and controlgear - EN 62271-203 2012
+ corr. July 2013 Part 203: Gas-insulated metal-enclosed
switchgear for rated voltages above 52 kV
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SIST EN 62271-112:2014
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SIST EN 62271-112:2014
IEC 62271-112
®
Edition 1.0 2013-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
High-voltage switchgear and controlgear –
Part 112: Alternating current high-speed earthing switches for secondary arc
extinction on transmission lines
Appareillage à haute tension –
Partie 112: Sectionneurs de terre rapides à courant alternatif pour l’extinction de
l’arc secondaire sur les lignes de transport
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX U
ICS 29.130.10; 29.130.99 ISBN 978-2-8322-1009-3
Warning! Make sure that you obtained this publication from an authorized distributor.
Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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SIST EN 62271-112:2014
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CONTENTS
FOREWORD . 4
1 General . 6
1.1 Scope . 6
1.2 Normative references . 6
2 Normal and special service conditions . 6
3 Terms and definitions . 6
3.1 General terms . 6
3.2 Assemblies of switchgear and controlgear . 8
3.3 Parts of assemblies . 8
3.4 Switching devices . 8
3.5 Parts of switchgear and controlgear . 8
3.6 Operation . 8
3.7 Characteristics quantities . 8
4 Ratings . 8
5 Design and construction . 10
6 Type tests . 11
7 Routine tests . 14
8 Guide to the selection of HSES . 14
9 Information to be given with enquiries, tenders and orders . 14
10 Rules for transport, storage, installation, operation and maintenance . 15
11 Safety . 15
Annex A (informative) Background information on the use of HSES . 16
Annex B (informative) Induced current and voltage conditions for other cases . 21
Figure 1 – Explanation of a multi-phase auto-reclosing scheme . 7
Figure 2 – Timing chart of HSES and circuit-breakers . 9
Figure A.1 – Single-line diagram of a power system . 17
Figure A.2 – Timing chart of the HSESs in relation to the transmission line circuit-
breakers . 17
Figure A.3 – Typical timing chart showing the time between fault initiation and a
successful re-close of the transmission line circuit-breakers . 18
Figure B.1 – System condition to explain successive fault . 22
Figure B.2 – Example of waveforms of delayed current zero phenomena . 22
Figure B.3 – Typical test circuit for electromagnetic coupling test-duty of a HSES with
delayed current zero crossings . 24
Figure B.4 – Typical test circuit for electrostatic coupling test-duty of HSES with
delayed current zero crossings . 24
Table 1 – Standardized values of rated induced currents and voltages . 10
Table 2 – Items to be listed on nameplate of a HSES . 11
Table A.1 – Comparison of earthing switches . 19
Table A.2 – Comparison of a four-legged reactor and HSES . 20
Table B.1 – Preferred values for single-phase earth fault with delayed current zero
phenomena in the presence of a successive fault . 23
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Table B.2 – Preferred values for multi-phase earth faults in a double-circuit system . 25
Table B.3 – Preferred values for covering the cases of categories 0 and 1 . 25
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INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR –
Part 112: Alternating current high-speed earthing switches
for secondary arc extinction on transmission lines
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62271-112 has been prepared by subcommittee 17A: High-voltage
switchgear and controlgear, of IEC technical committee 17: Switchgear and controlgear.
The text of this standard is based on the following documents:
FDIS Report on voting
17A/1042/FDIS 17A/1050/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
This International Standard should be read in conjunction with IEC 62271-1:2007, to which it
refers and which is applicable unless otherwise specified. In order to simplify the indication of
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62271-112 © IEC:2013 – 5 –
corresponding requirements, the same numbering of clauses and subclauses is used as in
IEC 62271-1. Amendments to these clauses and subclauses are given under the same
numbering, whilst additional subclauses, are numbered from 101.
A list of all parts in the IEC 62271, published under the general title High-voltage switchgear
and controlgear, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability 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.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
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HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR –
Part 112: Alternating current high-speed earthing switches
for secondary arc extinction on transmission lines
1 General
1.1 Scope
This part of IEC 62271 applies to a.c. high-speed earthing switches designed for indoor and
outdoor installation and for operation at service frequencies of 50 Hz and 60 Hz on systems
having voltages of 550 kV and above.
High-speed earthing switches described in this standard are intended to extinguish the
secondary arc remaining after clearing faults on transmission lines by the circuit-breakers.
1.2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 62271-1:2007, High-voltage switchgear and controlgear – Part 1: Common specifications
IEC 62271-100:2008, High-voltage switchgear and controlgear – Part 100: Alternating-current
circuit-breakers
IEC 62271-102:2001, High-voltage switchgear and controlgear – Part 102: Alternating current
disconnectors and earthing switches
IEC 62271-203:2011, High-voltage switchgear and controlgear – Part 203: Gas-insulated
metal-enclosed switchgear for rated voltages above 52 kV
2 Normal and special service conditions
Clause 2 of IEC 62271-1:2007 is applicable.
3 Terms and definitions
For the purposes of this document, the terms and definitions given in Clause 3 of
IEC 62271-1:2011, as well as the following apply.
3.1 General terms
3.1.101
secondary arc
arc that remains at the faulted point after interruption of the short-circuit current fed by the
network
Note 1 to entry: This secondary arc is supplied by electrostatic or electromagnetic induction from the adjacent
healthy phases.
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3.1.102
single-phase auto-reclosing scheme
auto-reclosing scheme in which a faulted phase circuit is opened and automatically re-closed
independently from the other phases
3.1.103
multi-phase auto-reclosing scheme
auto-reclosing scheme applied to double circuit overhead lines in which all faulted phase
circuits are opened and re-closed independently provided that at least two different phases
remain un-faulted
Note 1 to entry: An example of multi-phase auto-reclosing scheme is indicated in Figure 1.
A
B
Line 1
C
1)
a
b
Line 2
c
A
B
Line 1
C
2)
a
b
Line 2
c
A
B
Line 1
C
3)
a
b
Line 2
c
IEC 1895/13
Key
1) Up to 4 phases have a fault Closed circuit-breaker
2) Only the faulted phases have been tripped Open circuit-breaker
3) All circuit-breakers at both ends re-closed Re-closed circuit-breaker
Figure 1 – Explanation of a multi-phase auto-reclosing scheme
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Note 2 to entry: Other than the scheme described in 3.1.102 and 3.1.103, a three-phase auto-reclosing scheme is
commonly applied. In this scheme, all three phases are tripped and re-closed at both ends even if a fault occurred
in one phase. So far high-speed earthing switches are rarely applied with this scheme.
3.1.104
successive fault
additional earth fault that occurs in the adjacent phase circuit(s) during the time interval
between a single-phase earth fault and the opening of the high-speed earthing switch(es)
3.2 Assemblies of switchgear and controlgear
No particular definitions.
3.3 Parts of assemblies
No particular definitions.
3.4 Switching devices
3.4.101
high-speed earthing switch
HSES
earthing switch that has the capability to:
– make, carry and interrupt the induced current;
– withstand the recovery voltage caused by electromagnetic and/or by electrostatic
couplings prior to circuit re-closure;
– make and carry the rated short-circuit current
Note 1 to entry: The high-speed operation applies normally to both closing and opening.
Note 2 to entry: A high-speed earthing switch is not intended to be used as a maintenance earthing switch.
3.4.103.1
high-speed earthing switch class M0
high-speed earthing switch having a normal mechanical endurance of 1 000 operation cycles
3.4.103.2
high-speed earthing switch class M1
high-speed earthing switch having an extended mechanical endurance of 2 000 operation
cycles for special requirements
3.5 Parts of switchgear and controlgear
No particular definitions.
3.6 Operation
No particular definitions.
3.7 Characteristics quantities
No particular definitions.
4 Ratings
Clause 4 of IEC 62271-1:2007 is applicable with the following additions.
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4.4 Rated normal current and temperature rise
Subclause 4.4 of IEC 62271-1:2007 is not applicable.
4.101 Rated short-circuit making current
Subclause 4.101 of IEC 62271-102:2001 is applicable.
4.102 Rated operating sequence
The rated characteristics of the HSES are referred to the rated operating sequence.
a) C – t – O
i1
or
b) C – t – O – t – C – t – O
i1 i2 i1
where
– t is a time that is longer than the time required for secondary arc extinction and for
i1
dielectric recovery of air insulation at the faulted point. t is determined by users
i1
considering system stability. The preferred value of t is 0,15 s;
i1
is the intermediate time that is given by the system protection. t includes the closing
– t
i2 i2
time of the circuit-breakers after the HSESs open, the duration of a new line fault and the
breaking time of the circuit-breakers. Following this t time, the HSES can be reclosed.
i2
The preferred value of t is 0,5 s;
i2
In this case the HSES shall be able to operate without intentional time delay.
Figure 2 shows the time chart for the rated operating sequence of C – t – O – t – C – t –
i1 i2 i1
O.
Closed
Circuit-breaker
Open
Closed
Open
HSES
Current flow in HSES Current flow in HSES
t t t
i1 i2 i1
time
1 2 3 4 5 6 7 1 3 4 5 6
IEC 1896/13
Key
Circuit- Transmission line circuit-breakers that 3 Contact touch of HSESs
breaker interrupt the fault
HSES High-speed earthing switches 4 Energizing of the opening release of the HSESs
1 Energizing of the closing circuit of the 5 Contact separation of HSESs
HSESs
2 Current start in HSESs 6 Arc extinction in HSESs
t , t Times defined in 4.102 7 Fully open position of HSESs
i1 i2
NOTE 1 A common value for the re-closing time of the circuit-breaker is 1 s to guarantee system stability.
NOTE 2 t is normally within the range of 0,15 s to 0,5 s.
i1
NOTE 3 t is normally within the range of 0,5 s to 1 s.
i2
NOTE 4 The operating sequence b) is for system stability requirements to cover cases where another fault occurs
on the same phase.
NOTE 5 The HSES closing time is normally less than 0,2 s
Figure 2 – Timing chart of HSES and circuit-breakers
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4.103 Standard values for interruption
Standard values for HSES are given in Table 1.
Table 1 – Standardized values of rated induced currents and voltages
Rated Electromagnetic coupling Electrostatic coupling
voltage U
r
Rated Rated First TRV Time to first Rated induced Rated induced
induced power peak peak current voltage
current frequency
+10 +10 +10 +10
% ( % ) ( % ) ( % )
recovery
+10 -0 -0 -0 -0
( )
( % )
voltage
-0
+10
( % )
-0
kV A (rms) kV (rms) kV ms A (rms) kV (rms)
550 6 800 240 580 0,6 120 115
800 6 800 240 580 0,6 170 170
1 100 to 6 800 240 580 0,6 230 235
1 200
NOTE 1 For Table 1 the rated induced voltages by electrostatic recovery voltage have a 1-cos wave shape.
NOTE 2 For networks with up to two faults (category 0 and 1 as described in B.2) the corresponding values are
presented in Table B.3.
For networks with delayed current zero crossing occurrence (category 3 as described in B.2),
the corresponding values are presented in Table B.1.
For networks with multi-phase faults (category 4 as described in B.2) the corresponding
values are presented in Table B.2.
5 Design and construction
Clause 5 of IEC 62271-1:2007 is applicable with the following modifications.
5.5 Dependent power operation
Subclause 5.5 of IEC 62271-1:2007 is not applicable.
5.7 Independent manual operation power operation (independent unlatched
operation)
Subclause 5.7 of IEC 62271-1:2007 is not applicable.
5.10 Nameplates
The designation of the equipment is specified as HSES.
Items to be indicated on the nameplate are listed in Table 2.
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Table 2 – Items to be listed on nameplate of a HSES
Item
Manufacturer
Designation of type
Serial number
Year of manufacture
Rated voltage
Rated lightning impulse withstand voltage
Rated switching impulse withstand voltage
Rated power-frequency withstand voltage
Rated short-time withstand and peak withstand current
Rated duration of short-circuit
Rated filling pressure for insulation and /or operation
Rated supply voltage of auxiliary circuit
Rated frequency
Mechanical endurance class
Mass (including fluid)
Operating sequence
5.11 Interlocking devices
Subclause 5.11 of IEC 62271-1:2007 is not applicable.
5.101 Anti-pumping device
Anti-pumping device shall be provided for pneumatic and hydraulic operating mechanism.
5.102 Special requirements for HSES
A HSES shall be able to earth transmission lines and re-open to achieve their full voltage
withstand within the dead time of the auto-reclosing duty cycle of the transmission line circuit-
breakers. The dead time is defined by system stability and is normally set around 1 s enabling
dielectric recovery of insulation capability at the fault location. Fast operating capability for
both making and breaking is required.
The HSES shall have a capability to by-pass secondary arc current on the transmission lines.
The HSES shall have a capability to break induced current by electromagnetic and/or
electrostatic coupling on transmission lines with a recovery voltage specified in Table 1.
The HSES shall have a capability to withstand transient recovery voltage after interruption
and rated power frequency voltage to earth (U /√3) in open position.
r
The HSES shall be single-pole operated unless otherwise specified.
6 Type tests
Clause 6 of IEC 62271-1:2007 is applicable with the following additions.
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The dielectric performance shall be verified for phase-to-earth in the open position only in
accordance with IEC 62271-1:2007.
6.1.1 Grouping of tests
Subclause 6.1.1 of IEC 62271-1:2007 is not applicable.
6.3 Radio interference voltage (r.i.v.) test
Subclause 6.3 of 62271-1:2007 is applicable.
In case of metal enclosed type, 6.3 of CEI 62271-203:2011 is applicable.
6.5 Temperature-rise tests
Subclause 6.5 of IEC62271-1:2007 is not applicable.
6.101 Tests to prove the short-circuit making performance
Subclause 6.101 of IEC 62271-102:2001 is applicable.
6.102 Operating and mechanical endurance tests
Subclause 6.102 of IEC 62271-102:2001 is applicable.
The rated operating sequence shall be verified during mechanical operation.
The mechanical operating sequence for class M0 shall be one of the following:
a) A HSES with a specified duty cycle required C – t – O:
i1
– 1 000 C – t – O operations
i1
b) A HSES with a specified duty cycle C – t – O – t – C – t – O
i1 i2 i1
– 500 C – t – O operations, plus
i1
– 250 C – t – O – t – C – t – O operations.
i1 i2 i1
For class M1 the number of operations shall be twice the sequence specified.
Mechanical travel character
...
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