Amendment 1 - General requirements for arc fault detection devices

Amendement 1 - Exigences générales des dispositifs pour la détection de défauts d'arc

General Information

Status
Published
Publication Date
08-Feb-2017
Current Stage
PPUB - Publication issued
Start Date
09-Feb-2017
Completion Date
09-Feb-2017
Ref Project

Buy Standard

Standard
IEC 62606:2013/AMD1:2017 - Amendment 1 - General requirements for arc fault detection devices
English and French language
40 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (sample)

IEC 62606
Edition 1.0 2017-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
General requirements for arc fault detection devices
Exigences générales des dispositifs pour la détection de défaut d’arcs
IEC 62606:2013-07/AMD1:2017-02(en-fr)
---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
Copyright © 2017 IEC, Geneva, Switzerland

All rights reserved. Unless otherwise specified, 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

either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC

copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or

your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite

ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie

et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des

questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez

les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé Fax: +41 22 919 03 00
CH-1211 Geneva 20 info@iec.ch
Switzerland www.iec.ch
About the IEC

The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes

International Standards for all electrical, electronic and related technologies.
About IEC publications

The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the

latest edition, a corrigenda or an amendment might have been published.
IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org

The stand-alone application for consulting the entire The world's leading online dictionary of electronic and

bibliographical information on IEC International Standards, electrical terms containing 20 000 terms and definitions in

Technical Specifications, Technical Reports and other English and French, with equivalent terms in 16 additional

documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical

iPad. Vocabulary (IEV) online.

IEC publications search - www.iec.ch/searchpub IEC Glossary - std.iec.ch/glossary

The advanced search enables to find IEC publications by a 65 000 electrotechnical terminology entries in English and

variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of

committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been

and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and

CISPR.
IEC Just Published - webstore.iec.ch/justpublished

Stay up to date on all new IEC publications. Just Published IEC Customer Service Centre - webstore.iec.ch/csc

details all new publications released. Available online and If you wish to give us your feedback on this publication or

also once a month by email. need further assistance, please contact the Customer Service

Centre: csc@iec.ch.
A propos de l'IEC

La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des

Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications IEC

Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la

plus récente, un corrigendum ou amendement peut avoir été publié.
Catalogue IEC - webstore.iec.ch/catalogue Electropedia - www.electropedia.org

Application autonome pour consulter tous les renseignements Le premier dictionnaire en ligne de termes électroniques et

bibliographiques sur les Normes internationales, électriques. Il contient 20 000 termes et définitions en anglais

Spécifications techniques, Rapports techniques et autres et en français, ainsi que les termes équivalents dans 16

documents de l'IEC. Disponible pour PC, Mac OS, tablettes langues additionnelles. Egalement appelé Vocabulaire

Android et iPad. Electrotechnique International (IEV) en ligne.

Recherche de publications IEC - www.iec.ch/searchpub Glossaire IEC - std.iec.ch/glossary

La recherche avancée permet de trouver des publications IEC 65 000 entrées terminologiques électrotechniques, en anglais

en utilisant différents critères (numéro de référence, texte, et en français, extraites des articles Termes et Définitions des

comité d’études,…). Elle donne aussi des informations sur les publications IEC parues depuis 2002. Plus certaines entrées

projets et les publications remplacées ou retirées. antérieures extraites des publications des CE 37, 77, 86 et

CISPR de l'IEC.
IEC Just Published - webstore.iec.ch/justpublished

Restez informé sur les nouvelles publications IEC. Just Service Clients - webstore.iec.ch/csc

Published détaille les nouvelles publications parues. Si vous désirez nous donner des commentaires sur cette

Disponible en ligne et aussi une fois par mois par email. publication ou si vous avez des questions contactez-nous:

csc@iec.ch.
---------------------- Page: 2 ----------------------
IEC 62606
Edition 1.0 2017-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
General requirements for arc fault detection devices
Exigences générales des dispositifs pour la détection de défaut d’arcs
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.01; 29.120.50 ISBN 978-2-8322-3899-8

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
---------------------- Page: 3 ----------------------
– 2 – IEC 62606:2013/AMD1:2017
 IEC 2017
FOREWORD

This amendment has been prepared by subcommittee 23E: Circuit-breakers and similar

equipment for household use, of IEC technical committee 23: Electrical accessories.

The text of this amendment is based on the following documents:
FDIS Report on voting
23E/993/FDIS 23E/1003/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 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.
_____________
1 Scope
Replace the existing first paragraph by the following new first paragraph:

This International Standard applies to arc fault detection devices (AFDDs) for household and

similar uses, intended to be used in a.c. circuits, for rated voltages not exceeding 440 V a.c,

with rated frequencies of 50 Hz, 60 Hz or 50/60 Hz and rated currents not exceeding 63 A.

Replace, in the fourth paragraph, the words “final circuits” by “a final circuit”.

Delete the eighth and ninth paragraphs.
Add, at the end of this clause, the following new note:
NOTE 5 AFDD for d.c. applications are under consideration.
2 Normative references
Add the following new references:
IEC 60228, Conductors of insulated cables

IEC 61000-3-2:2014, Electromagnetic compatibility (EMC) – Part 3-2: Limits – Limits for

harmonic current emissions (equipment input current ≤ 16 A per phase)
---------------------- Page: 4 ----------------------
IEC 62606:2013/AMD1:2017 – 3 –
© IEC 2017

IEC 61543:1995, Residual current-operated protective devices (RCDs) for household and

similar use – Electromagnetic compatibility
IEC 61543:1995/AMD1:2004
IEC 61543:1995/AMD2:2005
3 Terms and definitions
3.2
arc fault
arcing fault
Replace the existing definition by the following new definition:
dangerous unintentional arc
3.4
arc fault detection unit
AFD unit
Replace, at the end of the note, the reference “see (4.1.3)” by “(see 4.1.3)”.
4.1 According to the method of construction
4.1.1 Replace the existing text by the following new text:

4.1.1 AFDD as one single device, comprising an AFD unit and opening means not providing

overcurrent or residual current protection.
4.3 According to the number of poles and current paths
Add to the existing list the following two new dashes:
– Three-pole AFDD;
– Four-pole AFDD.
Delete NOTE 1 and renumber “NOTE 2” as “NOTE”.
5.3.1 Preferred values of rated voltage (U )
Replace the existing text by the following new text:
Preferred values of rated voltage are as indicated in Table 22.
---------------------- Page: 5 ----------------------
– 4 – IEC 62606:2013/AMD1:2017
 IEC 2017
Table 22 – Preferred values of rated voltage
Rated voltage of Rated voltage of
AFDDs for use in AFDDs for use in
systems 230 V or systems 120/240 V or
AFDD Circuit supplying the AFDD
230/400 V or 400 V 240 V
V V
Single phase
Single-pole (with
(phase to earthed middle conductor or 230 120
two current paths)
phase to neutral)
Single phase
Two-pole (phase to neutral or phase to phase or 230, 400 120, 240
phase to earthed middle conductor)
230
Three phases (3-wire or 4-wire)
Three-pole
(400 V or 230/400 V or 230 V-system)
400
Three phases (4-wire)
Four-pole 400
(230/400 V-system)

NOTE 1 In IEC 60038 the network voltage value of 230/400 V has been standardized. This value is likely to

progressively supersede the values of 220/380 V and 240/415 V.

NOTE 2 Wherever in this standard there is a reference to 230 V or 400 V, they can be read as 220 V or 240 V,

380 V or 415 V, respectively.

NOTE 3 Wherever in this standard there is a reference to 120 V or 120/240 V or 240 V, they can be read as

100 V, 100/200 V or 200 V, respectively.

NOTE 4 Wherever in this standard there is a reference to 240 V three phases, it can be read as 100 V or

120/208 V.

NOTE In Japan, the phase to neutral conductor and phase to earthed conductor (grounded conductor) are

considered in a different way because single phase 2-wire systems supplied from a 2-wire system source do not

have a neutral point.
5.3.3 Preferred values of rated frequency
Replace the heading of 5.3.3 by the following new heading:
5.3.3 Standard values of rated frequency
Replace, in the first paragraph, “Preferred” by “Standard”.
Delete the second paragraph.

5.3.7.1 Limit values of operating criteria for AFDDs at low arc currents up to 63 A

Table 1 – Limit values of break time for U = 230 V AFDDs
Replace the heading of Table 1 by the following new heading:
Table 1 – Limit values of break time for U = 230 V and 400 V AFDDs

5.3.7.2 Limit values of operating criteria for AFDDs at high arc currents above 63 A

Table 3 – Maximum allowed number of arcing half-cycles within 0,5 s for U 230 V
AFDDs and U = 120 V AFDDs
---------------------- Page: 6 ----------------------
IEC 62606:2013/AMD1:2017 – 5 –
© IEC 2017
Replace the heading of Table 3 by the following new heading:
Table 3 – Maximum allowed number of arcing half-cycles within 0,5 s
6.1 Marking
Replace, in the first sentence of the sixth paragraph, “c & e” by “c and e”.

Replace, in the second sentence of the sixth paragraph, “a, b, d, f & i” by “a, b, d, f, i and j”.

Replace, in the third sentence of the sixth paragraph, “the information under h” by “the

information under i”.
8.2.3 Clearances and creepage distances (see Annex B)

Replace, in the third paragraph, “and arrangements of 9.7.2 items b), c), d) and e)” by “and

arrangements of 9.7.3 items b), c), d) and e)”.

Replace, in the third paragraph, the existing first indent by the following new indent:

– tests according to 9.7.3 to 9.7.6 as applicable;
Replace, in NOTE 1, “9.7.6” by “9.7.7.2”.
8.17 Performance of the AFD test device
Delete, at the end of the penultimate paragraph, the words “is operated”.
Add the following new subclause:
8.18 Performance in case of partial loss of supply connections

Three-pole AFDDs and four-pole AFDDs shall also perform as required for series, parallel and

earth arc fault when connected as follows:
– for three-pole AFDD, with two phases only;

– for four-pole AFDD: with three phases without neutral, with two phases only, and one

phase and neutral.
Compliance is checked by the tests of 9.23.
9.1.2 The characteristics of AFDDs are checked by means of tests
Table 10 – List of type tests
Add, at the end of the table, the following new row:

– Verification of the behaviour in case of partial loss of supply connections 9.23

---------------------- Page: 7 ----------------------
– 6 – IEC 62606:2013/AMD1:2017
 IEC 2017
9.7.2.4 Condition of the AFDD after the test
Replace “9.7.7” by “9.7.6”.
9.7.3 Insulation resistance of the main circuit
Replace the existing item c) by the following new item c):

c) with the AFDD in the closed position, between all poles connected together and the frame,

including a metal foil or part in contact with the outer surface of the housing of insulating

material but with the terminal areas kept completely free to avoid flashover between

terminals and the metal foil.
9.7.5 Insulation resistance and dielectric strength of auxiliary circuits
Replace the existing item b) by the following new item b):
b) The measurements of the insulation resistance are carried out:
– between the auxiliary circuits connected to each other and to the frame;

– between each of the parts of the auxiliary circuits which might be isolated from the

other parts in normal service and the whole of the other parts connected together;

at a voltage of approximately 500 V d.c. after this voltage has been applied for 1 min.

The insulation resistance shall be not less than 2 MΩ.
9.7.7.1 General testing procedure for the impulse withstand voltage tests
Replace, in NOTE 1, “9.7.6.2” by “9.7.7.2”.
9.7.7.2 Verification of clearances with the impulse withstand voltage
Add, in the first line of the first paragraph, “of” before “Table 7”.
9.8.2 Test procedure
Replace the existing second paragraph by the following two new paragraphs:

For four-pole AFDD, the test is first made by passing the specified current through the three

phase poles only.

The test is then repeated by passing the current through the pole intended for the connection

of the neutral and the pole adjacent to the neutral.
9.9.1 General
Replace the existing fourth paragraph by the following new paragraph:
---------------------- Page: 8 ----------------------
IEC 62606:2013/AMD1:2017 – 7 –
© IEC 2017

For an AFDD having more than one rated frequency, the tests shall be carried out at each

rated frequency.
9.9.2.1 General
Add, after the first paragraph, the following new paragraph:

The AFDD being supplied with all phases, the tests shall be performed, if applicable, between

one phase, chosen at random and neutral, and between two phases chosen at random.

Replace the existing second paragraph by the following new paragraph:

The tests shall be conducted by connecting a cable specimen (prepared in accordance with

9.9.2.6) in series with the AFDD according to Figure 4 for tests of 9.9.2.2 to 9.9.2.5 and

according to Figure 38 for tests of 9.9.2.8 and 9.9.2.9.
Replace the existing third paragraph by the following new paragraph:

The adjustment of the test currents without arcing, in the line where the cable specimen is

placed, is achieved by application of the line to neutral voltage reduced by 50 V to take into

account the value of the arc voltage during the test. For three-pole AFDD, the mid-point of the

resistors in Figure 38 shall be connected directly to the neutral. For tests of 9.9.2.2, and at

the rated current only, the adjustment of the test current in the cable specimen without arcing

is achieved by application of the rated voltage.
Delete the fourth paragraph.

9.9.2.3 Verification of correct operation in case of inserting load a with a series arc

fault
Replace the title of subclause 9.9.2.3 by the following new title:

9.9.2.3 Verification of correct operation in case of inserting a load with series arc fault

9.9.2.5 Test at the temperature limits
Add, at the end of the second dash, the following new text:

For the tripping tests, the flow of rated current may be interrupted, provided that the total

interruption period does not exceed 30 s. As soon as the sum of interruption periods exceeds

30 s, the AFDD shall be loaded again with rated current for 5 min before the next tripping time

measurement.
9.9.2.6 Preparation of the cable specimens
Replace the existing text of item c) by the following new text:

c) A slit or incision, perpendicular to the cable specimens axis, is to be made in the

insulation of the cable approximately half way along the length of the cable so as to

expose the conductors without severing any strands.
---------------------- Page: 9 ----------------------
– 8 – IEC 62606:2013/AMD1:2017
 IEC 2017
Replace the existing text of item e) by the following new text:

e) The conductors are to be stripped at one end, approximately 12 mm (or 0,5 in), for

connection to the test circuits.
Add the following new subclauses:

9.9.2.8 Verification of correct operation in case of arc in a three-phase system with

unbalanced load
This test is applicable for a four-pole AFDD only.

The detection test shall be performed for each pole and neutral separately. Whatever the

rated current value, the current in the three phases shall be adjusted at 2,5 A, 5 A and the

rated current (see Figure 38), according to 9.9.2.1. The arc test shall be performed on each

phase, in turn, at the previously adjusted current.
The test procedure shall be according to 9.9.2.2.

9.9.2.9 Verification of correct operation in case of arc in a three-phase system with

balanced load
This test is applicable for a three-pole AFDD and a four-pole AFDD.

The detection test shall be performed for each pole, except the neutral. The load current in

each phase shall be adjusted at the lowest arc current value and at the rated current of the

AFDD (see Figure 38), according to 9.9.2.1.
The test procedure shall be applied according to 9.9.2.2.

9.9.3.1 Verification of correct operation in case of parallel arc with limited current

Add, after the third paragraph, the following new paragraph:

The AFDD being supplied with all phases, the tests shall be performed between a phase

chosen at random and neutral (if any), and between two phases chosen at random, if

applicable.

9.9.3.2 Verification of correct operation in case of parallel arc cable cutting test

Add, after the second paragraph, the following new paragraph:

The tests shall be performed between a phase chosen at random and neutral (if any), and

between two phases chosen at random, if applicable.
9.9.4.1 General
Add, after the first paragraph, the following new paragraph:

The AFDD being supplied with all phases, the tests shall be performed between a phase

chosen at random and neutral (if any), and between two phases chosen at random, if

applicable.
---------------------- Page: 10 ----------------------
IEC 62606:2013/AMD1:2017 – 9 –
© IEC 2017
9.9.4.2 Masking test with inhibition loads
Add, before the existing first paragraph, the following new paragraph:

This test applies to a single-pole AFDD with two current paths and a two-pole AFDD.

Add, after item b), the following new note:

NOTE 1 THD can be calculated with the formula of IEC 61000-3-2:2014, 3.14.2, for total harmonic distortion

 
THD=
 
 
h=2
 
Replace the existing text of item c) by the following new text:

c) A capacitor start (air compressor type) motor, with a peak inrush current of 130 A ± 10 %

for a 120 V rated voltage AFDD, is to be started under load (compressor operating

without any air pressure in the air tank) and operated. For a 230 V rated voltage AFDD, a

2,2 kW capacitor start (air compressor type) motor is to be used;
Replace in d) “NOTE” by “NOTE 2”.
Add, after the sixth paragraph, the following new paragraph:

For selecting the maximum break time in Table 1 or Table 2, the test arc current is the current

in the cable specimen without arcing; it is measured by application of the rated voltage

reduced by 50 V.
9.9.4.3 Masking test with EMI filter
Replace the existing text of item a) by the following new text:

a) Two EMI filters of 0,22 μF shall be installed. One filter shall be installed at one end of two

resistive loads of 15 m (or 50 feet) in length and 2,5 mm (or 12 AWG) in cross-section;

the cable shall comply with IEC 60228. Each filter shall be on the end of approximately

2,0 m (or 6 feet) in length and of 1,5 mm (or 16 AWG) in cross-section. The arcing shall

be initiated as shown in Figure 12.
Replace the existing text of item b) by the following text:

b) An EMI filter as described in Figure 14 shall be installed at the end of 15 m (or 50 feet), in

length and 2,5 mm (or 12 AWG) in cross-section; the cable shall comply with IEC 60228.

The filter shall be on the end of 2,0 m (or 6 feet) in length and 1,5 mm (or 16 AWG) in

cross-section flexible cable. The AFDD and the arcing shall be located as shown in

Figure 13.
Add the following new subclause:
9.9.4.5 Masking test with inhibition loads for three-pole and four-pole AFDDs

A series of tests is performed with inhibition loads according to 9.9.2.9. The AFDD and arc

fault tester are connected in the circuit according to Figure 39.

The AFDD shall be tested with each of the following masking loads at AFDD rated voltage and

rated frequency:
---------------------- Page: 11 ----------------------
– 10 – IEC 62606:2013/AMD1:2017
 IEC 2017
+20

a) a three-phase asynchronous motor loaded to draw 2,5 A % per AFDD pole for 400 V

+20
rated voltage AFDD and 5 A % per AFDD pole for 230 V rated voltage AFDD;

b) a variable speed drive with a three-phase asynchronous motor adjusted in such a way that

the voltage applied to the motor is equal to the 80 % of the AFDD rated voltage and the

ratio U /f remains constant where U is the rated voltage and f the rated frequency.

n n
+20

The asynchronous motor consumption shall be adjusted for consuming 2,5 A % per AFDD

+20

pole for 400 V rated voltage AFDD and 5 A % per AFDD pole for 230 V rated voltage

AFDD.

The switching frequency of the variable speed drive shall be between 10 kHz and 12 kHz.

Systems comprising variable speed drives, motors and cabling, shall be confirmed by the

drive supplier to fulfil the requirements regarding the limit of harmonic current emissions as

defined in IEC 61000-3-2 for Class A equipments. The AFDD shall clear the arcing fault as

specified in Table 1 or Table 2 when using carbonized cable specimen or within 2,5 times the

break time in Table 1 or Table 2 when using the arc generator.
9.9.5.1 General
Add, after the existing first paragraph, the following new paragraph:

The AFDD being supplied with all phases, the tests shall be performed between a phase,

chosen at random and neutral (if any), and between two phases chosen at random, if

applicable.
9.9.5.2 Cross talk test
Replace the existing first paragraph by the following new paragraph:

Two branch circuits installed as close as possible in the same panel are supplied with the

same phase and neutral, if any, as described in Figure 16, one with AFDD protection and one

without AFDD protection (but with conventional overcurrent protection). Both circuits are

connected to a resistive load drawing a current equal to 5 A. For three-pole and four-pole

AFDDs, a 3-phase resistive load with 5 A in each phase shall be used.
Replace the existing second paragraph by the following new paragraph:

An arc is initiated with an arc generator (according to 9.9.2.7) or a cable specimen (according

to 9.9.2.6) in the circuit without the AFDD, according to the test conditions of 9.9.2.2. The arc

conditions shall be sustained for a duration of minimum 0,5 s for 230 V and for 400 V circuits,

or a duration of minimum 1 s for a 120 V circuit; the AFDD shall not trip.
9.9.5.4 Test with various disturbing loads
Replace the title by the following new title:

9.9.5.4 Test with various disturbing loads for single-pole AFDD with two current path

and two-pole AFDD
Replace, in the existing first paragraph, “9.9.4.1” by “9.9.4.2”.
---------------------- Page: 12 ----------------------
IEC 62606:2013/AMD1:2017 – 11 –
© IEC 2017
Add the following new subclause:
9.9.5.5 Test with various disturbing loads for three-pole and four-pole AFDDs

The AFDD is tested as in 9.9.4.5 but without the arc fault tester shown in Figure 39.

The AFDD shall be tested with each of the following loads:
+20

a) a three-phase (asynchronous motor) fan consuming, 2,5 A % per AFDD pole for a

+20
400 V rated voltage AFDD and 5 A % per AFDD pole for 230 V rated voltage AFDD;

b) a variable speed drive with a three-phase (asynchronous motor) adjusted in such a way

that the voltage applied to the fan is equal to the 80 % of the AFDD rated voltage and the

ratio U /f remains constant where U is the rated voltage and f the rated frequency.

n n
+20

The fan consumption shall be adjusted for consuming, 2,5 A % per AFDD pole for a 400 V

+20
rated voltage AFDD and 5 A % per AFDD pole for 230 V rated voltage AFDD.

The switching frequency of the variable speed drive shall be between 10 kHz and 12 kHz.

The variable speed drive shall not be equipped with optional EMC filters.

If an acceleration ramp is used for reaching the voltage applied to the fan, it shall not take

more than 5 s.

The loads are energized during at least 10 s. Five Start/Stop operations shall be performed.

The AFDD shall not trip.
9.10.2 Test procedure

Replace the existing third dash of the third paragraph by the following new dash:

– 500, or in the case of no test device 1 000, operating cycles by tripping the AFDD. The

tripping means and conditions will be decided between the manufacturer and the
laboratory.
9.11.2.2 General conditions for test
Add, in item a), the following new dashes:
– a three-pole AFDD;
– a four-pole AFDD.

Replace, in item a) after the sentence “Z , suitably calibrated, is an impedance used to obtain

one of the following currents:”, the two existing dashes by the following new dashes:

– the rated making and breaking capacity on one pole I ;
– the rated conditional short-circuit current on one pole I .
nc1
Replace, in the third paragraph of item e), “I ” by” I ”.
c1 nc1
---------------------- Page: 13 ----------------------
– 12 – IEC 62606:2013/AMD1:2017
 IEC 2017
Replace, in the first dash of item i), “9.7.6.3” by “9.7.7.3”.
Replace, in the second dash of item i), “9.7.3” by “9.7.4”.
Replace, in the second paragraph of item i), “9.7.2” by “9.7.3” (2 times).

9.11.2.4 Verification of the rated making and breaking capacity on one pole (I ) of

AFDDs and their suitability for use in IT systems
Replace the existing first paragraph of item b) by the following new paragraph:

The following sequence of operations is performed. The closing is performed by an actuator

operating the mechanism of the AFDD and opening at least 0,05 s later to ensure that current

flows in the AFDD.
9.11.2.5 Verification of the coordination between the AFDD and the declared
protective device
Delete, in the third paragraph of item c) 1), the word “residual”.
9.19.3 Test with temperature of 40 °C
Delete the note.
Add, at the end of the third paragraph, the following new sentence:
For a four-pole AFDD, only three poles are loaded.
9.21.1 General
Replace the existing text by the following new text:
AFDDs shall be submitted to the EMC tests according to IEC 61543:1995,

IEC 61543:1995/AMD1:2004 and IEC 61543:1995/AMD2:2005 and according to the additional

information given in 9.21.2, 9.21.3, and 9.21.4.
Add the following new subclause:
9.23 Verification of the behaviour in case of partial loss of supply connections
A three-pole AFDD shall be tested with two-poles connected, chosen at random.

A four-pole AFDD shall be tested with two phases chosen at random, with one phase chosen

at random and neutral, and with three phases without neutral.

The following tests shall be performed: 9.9.2.2, 9.9.2.3, 9.9.2.4, 9.9.3.2 and 9.9.3.3.

---------------------- Page: 14 ----------------------
IEC 62606:2013/AMD1:2017 – 13 –
© IEC 2017
Replace, in Figures 4, 6, 7, 9, 10 and 13, “Neutral” by “Phase or neutral”
Figure 4 – Test circuit for series arc fault tests
Add the following new note:

NOTE This figure represents a single-phase test set-up. Three-pole and four-pole devices are supplied as for

normal use.
Add the following new Figure 38:
S1 Load
AFDD
Phase or
neutral
IEC
Figure 38 – Test circuit for series arc in a three-phase system
with balanced and unbalanced load
Add the fol
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.