EN 60335-2-51:2003

SLOVENSKI SIST EN 60335-2-51:2003

STANDARD
december 2003
Gospodinjski in podobni električni aparati - Varnost - 2-51. del: Posebne
zahteve za vgrajene obtočne črpalke za grelne sisteme in vodovodne
instalacije (IEC 60335-2-51:2002)
Household and similar electrical appliances - Safety - Part 2-51: Particular
requirements for stationary circulation pumps for heating and service water
installations
ICS 23.080; 91.140.10 Referenčna številka
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

EUROPEAN STANDARD EN 60335-2-51
NORME EUROPÉENNE
EUROPÄISCHE NORM June 2003
ICS 23.080; 91.140.10 Supersedes EN 60335-2-51:1997

English version
Household and similar electrical appliances –
Safety
Part 2-51: Particular requirements for stationary circulation pumps
for heating and service water installations
(IEC 60335-2-51:2002)
Appareils électrodomestiques  Sicherheit elektrischer Geräte für den
et analogues – Hausgebrauch und ähnliche Zwecke
Sécurité Teil 2-51: Besondere Anforderungen für
Partie 2-51: Règles particulières ortsfeste Umwälzpumpen für Heizungs-
pour les pompes de circulation fixes und Brauchwasseranlagen
pour installations de chauffage (IEC 60335-2-51:2002)
et de distribution d'eau
(CEI 60335-2-51:2002)
This European Standard was approved by CENELEC on 2003-05-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees 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.

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

© 2003 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 60335-2-51:2003 E
Foreword
The text of the International Standard IEC 60335-2-51:2002 (61/2220/FDIS), prepared by the
IEC Technical Committee 61, Safety of household and similar electrical appliances, was submitted to
the Unique Acceptance Procedure and was approved by CENELEC as EN 60335-2-51 on
2003-05-01.
This European Standard replaces EN 60335-2-51:1997.
The following dates are applicable:
- latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2004-05-01
- date on which national standards
conflicting with the EN have to be withdrawn (dow) 2006-05-01
This part 2 has to be used in conjunction with EN 60335-1, Household and similar electrical
appliances – Safety – Part 1: General requirements. It was established on the basis of the 2002
edition of that standard. Amendments and revisions of Part 1 have also to be taken into account and
the dates when such changes become applicable will be stated in the relevant amendment or revision
of Part 1.
This part 2 supplements or modifies the corresponding clauses of EN 60335-1, so as to convert it into
the European Standard: Safety requirements for electric stationary circulation pumps for heating and
service water installations.
When a particular subclause of Part 1 is not mentioned in this part 2, that subclause applies as far as
is reasonable. When this standard states "addition", "modification" or "replacement", the relevant text
of Part 1 is to be adapted accordingly.
NOTE 1 The following numbering system is used:
- subclauses, tables and figures that are numbered starting from 101 are additional to those in Part 1;
- unless notes are in a new subclause or involve notes in Part 1, they are numbered starting from 101, including those in a
replaced clause or subclause;
- additional annexes are lettered AA, BB, etc.;
- subclauses, notes and annexes that are additional to those in the IEC standard are prefixed with the letter Z.
NOTE 2 The following print types are used:
- requirements: in roman type;
- test specifications: in italic type;
- notes: in small roman type.
Words in bold in the text are defined in Clause 3. When a definition concerns an adjective, the adjective and the associated
noun are also in bold.
There are no special national conditions causing a deviation from this European Standard, other than
those listed in Annex ZA to EN 60335-1.
There are no national deviations from this European Standard, other than those listed in Annex ZB to
EN 60335-1.
p NOTE  In this document, p is used in the margin to indicate instructions for preparing the printed version.
_____________
- 3 - EN 60335-2-51:2003
Introduction
p Add:
An investigation by CENELEC TC 61 has shown that all risks from products within the scope of this
standard are fully covered by the Low Voltage Directive, 73/23/EEC. For products having mechanical
moving parts, a risk assessment in accordance with the Machinery Directive, 98/37/EC, has shown
that the risks are mainly of electrical origin and consequently this directive is not applicable. However,
the relevant essential safety requirements of the Machinery Directive are covered by this standard
together with the principal objectives of the Low Voltage Directive.
____________
Endorsement notice
The text of the International Standard IEC 60335-2-51:2002 was approved by CENELEC as a
European Standard without any modification.
____________
NORME CEI
INTERNATIONALE
IEC
60335-2-51
INTERNATIONAL
Troisième édition
STANDARD
Third edition
2002-10
Appareils électrodomestiques et analogues –
Sécurité –
Partie 2-51:
Règles particulières pour les pompes de
circulation fixes pour installations de
chauffage et de distribution d'eau

Household and similar electrical appliances –
Safety –
Part 2-51:
Particular requirements for stationary circulation
pumps for heating and service water installations
 IEC 2005 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 any
utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
microfilms, sans l'accord écrit de l'éditeur. the publisher.
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Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
CODE PRIX
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PRICE CODE
Commission Electrotechnique Internationale
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue

60335-2-51  IEC:2005 – 3 –
CONTENTS
FOREWORD.5
INTRODUCTION.9
1 Scope.11
2 Normative references .11
3 Definitions .11
4 General requirement.13
5 General conditions for the tests .13
6 Classification.13
7 Marking and instructions.15
8 Protection against access to live parts.15
9 Starting of motor-operated appliances .15
10 Power input and current .15
11 Heating .15
12 Void.17
13 Leakage current and electric strength at operating temperature.17
14 Transient overvoltages .17
15 Moisture resistance .17
16 Leakage current and electric strength.17
17 Overload protection of transformers and associated circuits .17
18 Endurance.19
19 Abnormal operation .19
20 Stability and mechanical hazards .19
21 Mechanical strength .19
22 Construction .19
23 Internal wiring.19
24 Components .21
25 Supply connection and external flexible cords .21
26 Terminals for external conductors.21
27 Provision for earthing .21
28 Screws and connections .21
29 Clearances, creepage distances and solid insulation .21
30 Resistance to heat and fire.21
31 Resistance to rusting.21
32 Radiation, toxicity and similar hazards.21

Annexes .23

Bibliography.23

Table 101 – Temperature classification of circulation pumps.13

60335-2-51  IEC:2005 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-51: Particular requirements for stationary circulation pumps
for heating and service water installations

FOREWORD
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