EN ISO 5826:2003
(Main)Resistance welding equipment - Transformers - General specifications applicable to all transformers (ISO 5826:1999)
Resistance welding equipment - Transformers - General specifications applicable to all transformers (ISO 5826:1999)
Widerstandsschweißeinrichtungen - Transformatoren - Allgemeine Anforderungen (ISO 5826:1999)
Diese Norm gilt für Transformatoren für Widerstands-Schweißeinrichtungen ohne angeschlossene Gleich-richter.
Matériel de soudage par résistance - Transformateurs - Spécifications générales applicables à tous les transformateurs (ISO 5826:1999)
Oprema za elektrouporovno varjenje - Transformatorji - Splošne specifikacije, veljavne za vse transformatorje (ISO 5826:1999)
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2003
Oprema za elektrouporovno varjenje - Transformatorji - Splošne specifikacije,
veljavne za vse transformatorje (ISO 5826:1999)
Resistance welding equipment - Transformers - General specifications applicable to all
transformers (ISO 5826:1999)
Widerstandsschweißeinrichtungen - Transformatoren - Allgemeine Anforderungen (ISO
5826:1999)
Matériel de soudage par résistance - Transformateurs - Spécifications générales
applicables a tous les transformateurs (ISO 5826:1999)
Ta slovenski standard je istoveten z: EN ISO 5826:2003
ICS:
25.160.30 Varilna oprema Welding equipment
29.180 Transformatorji. Dušilke Transformers. Reactors
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN ISO 5826
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2003
ICS 25.160.30; 29.180
English version
Resistance welding equipment - Transformers - General
specifications applicable to all transformers (ISO 5826:1999)
Matériel de soudage par résistance - Transformateurs - Widerstandsschweißeinrichtungen - Transformatoren -
Spécifications générales applicables à tous les Allgemeine Anforderungen (ISO 5826:1999)
transformateurs (ISO 5826:1999)
This European Standard was approved by CEN on 3 April 2003.
CEN 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 Management Centre or to any CEN 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 CEN member into its own language and notified to the Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2003 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 5826:2003 E
worldwide for CEN national Members.
Foreword
The text of ISO 5826:1999 has been prepared by Technical Committee ISO/TC 44 "Welding and
allied processes" of the International Organization for Standardization (ISO) and has been taken
over as EN ISO 5826:2003 by Technical Committee CEN/TC 121 "Welding", the secretariat of
which is held by DS.
This European Standard shall be given the status of a national standard, either by publication of
an identical text or by endorsement, at the latest by November 2003, and conflicting national
standards shall be withdrawn at the latest by November 2003.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium, Czech
Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and
the United Kingdom.
Endorsement notice
The text of ISO 5826:1999 has been approved by CEN as EN ISO 5826:2003 without any
modifications.
INTERNATIONAL ISO
STANDARD 5826
Second edition
1999-11-15
Resistance welding equipment —
Transformers — General specifications
applicable to all transformers
Matériel de soudage par résistance — Transformateurs — Spécifications
générales applicables à tous les transformateurs
A
Reference number
ISO 5826:1999(E)
ISO 5826:1999(E)
Contents Page
1 Scope .1
2 Normative references .1
3 Terms and definitions .1
4 Symbols.2
5 Physical environment and operating conditions.3
6 Test conditions .3
7 Protection against electric shock.5
8 Thermal requirements.6
9 Rated no-load output voltage (U ) .9
10 Rated short-circuit voltage (U ).9
cc
11 Cooling liquid circuit .9
12 Dynamic behaviour.10
13 Rating plate .10
14 Instruction manual.12
Annex A (informative) Example of a rating plate.13
Annex B (normative) Corrections for higher altitudes and cooling medium temperatures .14
Annex C (normative) Notes on physical concepts and comments on some definitions.15
Annex D (normative) Type code .21
Bibliography.22
© ISO 1999
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 the publisher.
International Organization for Standardization
Case postale 56 • CH-1211 Genève 20 • Switzerland
Internet iso@iso.ch
Printed in Switzerland
ii
© ISO
ISO 5826:1999(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO
member bodies). The work of preparing International Standards is normally carried out through ISO technical
committees. Each member body interested in a subject for which a technical committee has been established has
the right to be represented on that committee. International organizations, governmental and non-governmental, in
liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical
Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
Draft International Standards adopted by the technical committees are circulated to the member bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.
International Standard ISO 5826 was prepared by Technical Committee ISO/TC 44, Welding and allied processes,
Subcommittee SC 6, Resistance welding.
This second edition cancels and replaces the first edition (ISO 5826:1983), which has been technically revised.
Annexes B, C and D form a normative part of this International Standard. Annex A is for information only.
iii
INTERNATIONAL STANDARD © ISO ISO 5826:1999(E)
Resistance welding equipment — Transformers — General
specifications applicable to all transformers
1 Scope
This International Standard give specifications applicable to transformers for resistance welding equipment without
connected rectifier.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of
this International Standard. For dated references, subsequent amendments to, or revisions of, any of these
publications do not apply. However, parties to agreements based on this International Standard are encouraged to
investigate the possibility of applying the most recent editions of the normative documents indicated below. For
undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC
maintain registers of currently valid International Standards.
ISO 669, Resistance welding equipment — Mechanical and electrical requirements.
IEC 60051-2, Direct acting indicating analogue electrical measuring instruments and their accessories — Part 2:
Special requirements for ammmeters and voltmeters.
IEC 60085, Thermal evaluation and classification of electrical insulation.
IEC 60204-1, Electrical equipment of industrial machines — Part 1: General requirements.
IEC 60529, Degrees of protection provided by enclosures (IP code).
IEC 60536-2, Classification of electrical and electronic equipment with regard to protection against electric shock —
Part 2: Guidelines to requirements for protection against electric shock.
IEC 60664-1, Insulation coordination for equipment within low-voltage systems — Part 1: Principles, requirements
and tests.
IEC 60905, Loading guide for dry-type power transformers.
3 Terms and definitions
For the purposes of this International Standard, the terms and definitions given in ISO 669 apply.
© ISO
ISO 5826:1999(E)
4 Symbols
The symbols used in this International Standard are listed in Table 1.
Table 1 — List of symbols
Symbol Description Reference
I rated permanent input current 10, 12
p
I input current at a given duty factor annex C
X
I output current annex C
I permanent output current at 100 % duty factor 13.2, annex C
p
I output current at a given duty factor annex C
X
I output current at 50 % duty factor 13.2
2/50
m mass 13.2
P power annex C
P permanent input power (at 100 % duty factor) 10, 11, 13.2, annex C
p
P input power at a given duty factor annex C
X
P input power at 50 % duty factor 13.2
Q required total rate of cooling liquid flow 11, 13.2
R initial resistance of a winding 8.2.1, 8.3.2
R resistance of a winding at the end of the heating test 8.3.2
t time annex C
t on-load time annex C
T cycle time annex C
U rated short-circuit voltage 10
cc
U input short-circuit voltage 10
cc
U rated supply voltage 9, 10, 13.2
1N
U rated output no-load voltage 9, 13.2
X duty factor annex C
X duty factor of the magnetic circuit annex C
m
Z total impedance refered to the output 10
Dp pressure drop of the cooling liquid circuit 11, 13.2
Du temperature differences annex C
1, 2
u temperature annex C
u cooling medium temperature annex C
a
u equilibrium temperature annex C
m
u temperature when the transformer starts to cool annex C
n
temperatures for calculation of the thermal time constant or the
u 8.2.1, 8.3.2, annex C
0, 1, 2
winding temperatures during the heating test
t thermal time constant annex C
t thermal time constant at given on-load time annex C
t thermal time constant at permanent output current annex C
p
© ISO
ISO 5826:1999(E)
5 Physical environment and operating conditions
5.1 General
Transformers shall be suitable for use in the physical environment and operating conditions as specified below.
When the physical environment and/or operating conditions are outside those specified below, an agreement may
be needed between the supplier and the user, (see e.g. annex B of IEC 60204-1:1997).
5.2 Ambient air temperature
Transformers shall be capable of operating correctly in an ambient air temperature between 1 5 °C and 1 40 °C.
In case of other maximum temperatures of the cooling medium, see annex B.
5.3 Humidity
Transformers shall be capable of operating correctly within a relative humidity range of 30 % to 95 %.
Harmful effects of occasional condensation shall be avoided by proper design of the equipment or, where
necessary, by proper additional measures (e.g. air conditioners, drain holes).
5.4 Altitude
Transformers shall be capable of operating correctly at altitudes up to 1 000 m above mean sea level.
In case of other altitudes, see annex B.
5.5 Transportation and storage
Transformers shall be designed to withstand, or suitable precautions shall be taken to protect against, transportation
and storage temperatures between 2 25 °C and 1 55 °C and for short periods not exceeding 24 h up to 1 70 °C.
Suitable means shall be provided to prevent damage from humidity, vibration and shock.
5.6 Provisions for handling
Transformers shall be provided with suitable means for handling by cranes or similar equipment.
5.7 Temperature of the cooling liquid
The temperature of the cooling liquid may be up to 1 30 °C at the inlet of the transformer.
NOTE Condensation caused by high cooling liquid flow or low cooling liquid temperature in relation to the relative humidity
shoul
...
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