CISPR 12/FRAG2
(Main)Revision of CISPR Publication 12 - Clause 5.2: Measuring location requirements
Revision of CISPR Publication 12 - Clause 5.2: Measuring location requirements
The recommendations in this Technical Report are applicable to electrical and electronic equipment intended to be connected to a public low-voltage a.c. distribution system, where the equipment has a rated input current exceeding 16 A per phase, or has a lower rated current, but requires the special consent of the supply authority.[
]This publication has the status of a technical report - type 2
Compatibilité électromagnétique (CEM) - Partie 3: Limites - Section 5: Limitation des fluctuations de tension et du flicker dans les réseaux basse tension pour les équipements ayant un courant appelé supérieur à 16 A
Les recommandations figurant dans ce rapport sont applicables aux appareils électriques et électroniques destinés à être raccordés au réseau de distribution basse tension alternatif, dont le courant assigné d'entrée est soit supérieur à 16 A par phase, soit inférieur à 16 A par phase mais nécessitant une autorisation spéciale de la Compagnie d'Electricité.[
]Cette publication a le statut d'un raport technique de type 2.
Electromagnetic compatibility (EMC) - Part 3: Limits - Section 5: Limitation of voltage fluctuations and flicker in low-voltage power supply systems for equipment with rated current greater than 16 A
General Information
Standards Content (Sample)
SLOVENSKI SIST-TP IEC/TR2 61000-3-
5:2004
STANDARD
april 2004
Electromagnetic compatibility (EMC) - Part 3: Limits - Section 5: Limitation of
voltage fluctuations and flicker in low-voltage power supply systems for equipment
with rated current greater than 16 A
ICS 33.100.01 Referenčna številka
SIST-TP IEC/TR2 61000-3-5:2004(en)
© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno
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RAPPORT CEI
TECHNIQUE - TYPE 2 IEC
1000-3-5
TECHNICAL
Première
édition
REPORT - TYPE 2
First edition
1994-12
Compatibilité électromagnétique (CEM) -
Partie 3:
Limites Section 5: Limitation des fluctuations
de tension et du flicker dans les réseaux
tension pour les équipements ayant
basse
un appelé supérieur à 16 A
courant
Electromagnetic compatibility (EMC) -
Part 3:
Limits - Section 5: Limitation of voltage fluctuations
and flicker in low-voltage power supply systems
for equipment with rated current greater than 16 A
© CEI 1994 Droits de reproduction réservés — Copyright — all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in
utilisée sous quelque forme que ce soit et par aucun pro- any form or by any means, electronic or mechanical,
cédé, électronique ou mécanique, y compris la photocopie et including photocopying and microfilm, without permission
les microfilms, sans l'accord écrit de l'éditeur. in writing from the publisher.
Bureau Central de la Commission Electrotechnique Internationale 3, rue de Varembé Genève, Suisse
Commission Electrotechnique Internationale
CODE PRIX
International Electrotechnical Commission
PRICE CODE
IEC MeteityHaportHae 3neKrparexHHgeCKaq HOMHCCHG
Pour prix, voir catalogue en vigueur
• s
For price, see current catalogue
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1000-3-5 ©IEC:1994 – 3 –
CONTENTS
Page
FOREWORD 5
INTRODUCTION 9
Clause
11
1 Scope
11
2 Normative references
13
3 Definitions
13
4 Equipment assessment
13
4.1 General
4.2 Information from the consumer 13
4.3 Information from the electricity supplier 13
13
4.4 Information from the manufacturer
4.5 Measurement procedure for the type test for equipment with a rated input
current up to 75 A 15
15
4.5.1 Test impedance Z'
15
4.5.2 Test of equipment against Z t
15
4.5.3 Evaluation against Zref
4.6 Evaluation and declaration by the manufacturer of equipment with
17
a rated input current up to 75 A
4.6.1 Check of the measured values against the limits contained
17
in IEC 1000-3-3
17
4.6.2 Calculation of the maximum permissible system impedance
19
4.7 Evaluation of equipment with a rated input current exceeding 75 A
Annexes
A Recommended questionnaire for the consumer 21
B 25
Recommended questionnaire for the electricity supplier
C Explanations 27
27
C.1 Explanation of 4.5.1
27
C.2 Explanation of 4.6.2
29
C.3 Explanation of 4.7
D Diagrammatic representation of procedures to be followed in evaluating voltage
fluctuations and flicker disturbances caused by equipment connected to the
low-voltage public supply network 33
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– 5 –
1000-3-5 ©IEC:1994
ELECTROTECHNICAL COMMISSION
INTERNATIONAL
ELECTROMAGNETIC COMPATIBILITY (EMC) -
Part 3: Limits -
Section 5: Limitation of voltage fluctuations and
flicker in low-voltage power supply systems for
equipment with rated current greater than 16 A
FOREWORD
The IEC (International Electrotechnical Commission) is a worldwide organization for standardization
1)
comprising all national electrotechnical committees (IEC National Committees). The object of the IEC is to
promote international cooperation on all questions concerning standardization in the electrical and
electronic fields. To this end and in addition to other activities, the IEC publishes International Standards.
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. The IEC
collaborates closely with the International Organization for Standardization (ISO) in accordance with
conditions determined by agreement between the two organizations.
The formal decisions or agreements of the IEC on technical matters, prepared by technical committees on
2)
which all the National Committees having a special interest therein are represented, express, as nearly as
possible, an international consensus of opinion on the subjects dealt with.
3) They have the form of recommendations for international use published in the form of standards, technical
reports or guides and they are accepted by the National Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
The main task of IEC technical committees is to prepare International Standards. In
exceptional circumstances, a technical committee may propose the publication of a technical
repo rt of one of the following types:
type 1, when the required support cannot be obtained for the publication of an
•
International Standard, despite repeated effo rts;
type 2, when the subject is still under technical development or where for any other
•
reason there is the future but not immediate possibility of an agreement on an International
Standard;
type 3, when a technical committee has collected data of a different kind from that
•
which is normally published as an International Standard, for example "state of the art".
s of types 1 and 2 are subject to review within three years of publication to
Technical repo rt
decide whether they can be transformed into International Standards. Technical reports of
type 3 do not necessarily have to be reviewed until the data they provide are considered
to be no longer valid or useful.
of type 2, has been prepared by sub-committee 77A:
IEC 1000-3-5, which is a technical repo rt
Low frequency phenomena of IEC technical committee 77: Electromagnetic compatibility.
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– 7 –
1000-3-5 © IEC:1994
The text of this technical report is based on the following documents:
Committee draft Report on voting
77A(SEC)80
77A(SEC)72
Full information on the voting for the approval of this technical report can be found in the
repo rt on voting indicated in the above table.
type 2 Technical Repo rt series of
This document is issued in the
1 of the IEC/ISO
publications (according to G.4.2.2 of pa rt
Directives) as a "prospective standard for provisional
application" in the field of electromagnetic compatibility because
there is an urgent requirement for guidance on how standards in
this field should be used to meet an identified need.
This document is not to be regarded as an "International
Standard". It is proposed for provisional application so that
information and experience of its use in practice may be
Comments on the content of this document should be
gathered.
sent to the IEC Central Office.
A review of this type 2 Technical Report will be carried out not
later than three years after its publication, with the options of
either extension for a further three years or conversion to an
International Standard or withdrawal.
Annexes A, B, C and D are for information only.
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1000-3-5 ©IEC:1994 – 9 -
INTRODUCTION
IEC 1000 is published in separate parts according to the following structure:
Part 1: General
General considerations (introduction, fundamental principles)
Definitions, terminology
Part 2: Environment
Description of the environment
Classification of the environment
Compatibility levels
Part 3: Limits
Emission limits
Immunity limits (in so far as they do not fall under responsibility of product committees)
Part 4: Testing and measurement techniques
Measurement techniques
Testing techniques
Part 5: installation and mitigation guidelines
Installation guidelines
Mitigation methods and devices
Part 9: Miscellaneous
Each part is further subdivided into sections which are to be published either as
International Standards or as Technical Reports.
These standards and reports will be published in chronological order and numbered
accordingly.
This section is a technical report.
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1000-3-5 ©IEC:1994 - 11 -
ELECTROMAGNETIC COMPATIBILITY (EMC) -
Part 3: Limits -
Section 5: Limitation of voltage fluctuations and
flicker in low-voltage power supply systems for
equipment with rated current greater than 16 A
1 Scope
This section of IEC 1000-3 is concerned with the emission of disturbances due to voltage
fluctuations and flicker.
The recommendations in this Technical Report are applicable to electrical and electronic
equipment intended to be connected to a public low-voltage a.c. distribution system,
where the equipment has a rated input current exceeding 16 A per phase, or has a lower
rated current, but requires the special consent of the supply authority.
The recommendations that specify the information required to enable a supply authority,
manufacturer, or consumer to assess equipment and appropriate questionnaires are included
as annexes A and B.
Guidance is also given on emission values of voltage fluctuations produced by equipment
which has been type tested to the specified conditions given in IEC 1000-3-3.
NOTE 1 — The limits recommended in this report are mainly based on the subjective severity of the flicker
of the light output from 230 V/60 W coiled-coil filament lamps as a result of fluctuation of the supply
voltage. For systems with nominal voltages less than 220 V, line-to-neutral, limits, and reference circuit
values have not yet been considered.
The authorization to connect equipment to the supply depends on the levels of disturbance
caused by the equipment and the load flow conditions in the network.
NOTE 2 — For equipment requiring authorization, only general recommendations for the assessment of
disturbances can be given. There is no guarantee that the connection of equipment complying with the
recommendations in clause 3 will be allowed in all cases, as system loading must not exceed plant ratings
(transformers, cables, etc.).
The methods of assessment may be applied also to private consumer installations.
2 Normative references
The following normative documents contain provisions which, through reference in this
text, constitute provisions of this section of IEC 1000-3. At the time of publication, the
editions indicated were valid. All normative documents are subject to revision, and pa rties
to agreements based upon this section of IEC 1000-3 are encouraged to investigate the
possibility of applying the most recent editions of the normative documents indicated'
below. Members of the IEC and the ISO maintain registers of currently valid International
Standards.
IEC 50(161): 1990,
International Electrotechnical Vocabulary (1EV) - Chapter 161: Electro-
magnetic compatibility
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1000-3-5 © IEC:1994 – 13 –
IEC 555-2: 1982, Disturbances in supply systems caused by household appliances and
similar electrical equipment – Part 2: Harmonics
IEC 1000-3-3: 1994, Electromagnetic compatibility – Part 3: Limits – Section 3: Limitation
of voltage fluctuations and flicker in low-voltage power supply systems for equipment with
rated current <— 16 A
3 Definitions
Definitions are given in IEC 555-2, IEC 1000-3-3 and IEC 50(161).
4 Equipment assessment
4.1 General
Methods of flicker assessment for different types of voltage fluctuations are described in
IEC 1000-3-3.
It is recommended that the supply quality parameters are measured before and after the
connection of a new load which is critical in any respect. The assessment method and
data used should be verified.
The equipment shall comply with the limits for all relevant phase-to-neutral voltages.
4.2
Information from the consumer
When a consumer enquires about connection of a major load to a low-voltage public
supply network he shall, on request, provide information to enable assessment of
the possible disturbances caused by the load. This may be done by completing the
questionnaire contained in annex A.
4.3
Information from the electricity supplier
The electricity supplier may, on request and if appropriate, complete the questionnaire
contained in annex B.
4.4 Information from the manufacturer
If the equipment complies with the requirements given in IEC 1000-3-3, this should be
declared, and no further action is necessary.
If the equipment has an input current up to and including 75 A and does not comply with
IEC 1000-3-3, the manufacturer shall calculate and declare the maximum permissible
system impedance in accordance with 4.6.2. This declaration is given in order to facilitate
the decision of the electricity supplier as to whether or not the equipment may be
connected to the supply system at a particular location. In order to proceed, the tests
of 4.5 are carried out.
If the equipment has a rated input current exceeding 75 A, the procedure in 4.7 shall be
followed.
NOTE — A diagramatic representation of the procedure is given in annex D.
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1000-3-5 © IEC:1994 - 15 -
4.5 Measurement procedure for the type test for equipment
with a rated input current up to 75 A
In order to evaluate the maximum permissible system impedance for type test, some
auxiliary quantities are necessary. Their meaning is presented in table 1.
Table 1 - Meaning of the suffixes in different situations
Suffix Meaning Situation
sys system Zsys is the impedance of the system to which
the equipment may be connected
ref reference Zfef is the reference impedance
* measurement or Z` is the test
...
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