IEC 60519-10:2013

Safety in electroheating installations - Part 10: Particular requirements for electrical resistance trace heating systems for industrial and commercial applications

IEC 60519-10:2013 provides safety requirements for electrical resistance trace heating systems used in industrial and commercial applications for piping, vessels, roofs, concrete slab heating and other similar applications. This second edition cancels and replaces the first edition published in 2005. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- The structure has been amended and adjusted to IEC 60519-1:2010;
- References to IEC 62395-1 and IEC 62395-2 have been completed.
This publication is to be read in conjunction with IEC 60519-1:2010.

Sécurité dans les installations électrothermiques - Partie 10: Règles particulières pour les systèmes de chauffage par traçage à résistance électrique pour applications industrielles et commerciales

La CEI 60519-10:2013 donne les exigences de sécurité pour les systèmes de chauffage par traçage à résistance électrique utilisés dans les applications industrielles et commerciales pour le chauffage des tuyauteries, des réservoirs, des toits, des dalles de béton et d'autres applications similaires. Cette deuxième édition annule et remplace la première édition parue en 2005. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- La structure a été modifiée et ajustée par rapport à la CEI 60519-1:2010;
- Les références à la CEI 62395-1 et à la CEI 62395-2 ont fait l'objet d'un complément.
Cette publication doit être lue conjointement avec la CEI 60519-1:2010.

General Information

• Status: Published
• Publication Date: 27-Apr-2023
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 25.180.10 - Electric furnaces
• Technical Committee: TC 27 - Industrial electroheating and electromagnetic processing
• Current Stage: WPUB - Publication withdrawn
• Completion Date: 28-Apr-2023

Standards Content (Sample)

IEC 60519-10
Edition 2.0 2013-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Safety in electroheating installations –
Part 10: Particular requirements for electrical resistance trace heating systems
for industrial and commercial applications
Sécurité dans les installations électrothermiques –
Partie 10: Exigences particulières pour les systèmes de chauffage par traçage à
résistance électrique pour applications industrielles et commerciales
IEC 60519-10:2013
---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
Copyright © 2013 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 la CEI ou du Comité national de la CEI du pays du demandeur.

Si vous avez des questions sur le copyright de la CEI ou si vous désirez obtenir des droits supplémentaires sur cette

publication, utilisez les coordonnées ci-après ou contactez le Comité national de la CEI de votre pays de résidence.

IEC Central Office Tel.: [phone]
3, rue de Varembé Fax: [phone]
CH-1211 Geneva 20 [e-mail]
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.
Useful links:

IEC publications search - www.iec.ch/searchpub Electropedia - www.electropedia.org

The advanced search enables you to find IEC publications The world's leading online dictionary of electronic and

by a variety of criteria (reference number, text, technical electrical terms containing more than 30 000 terms and

committee,…). definitions in English and French, with equivalent terms in

It also gives information on projects, replaced and additional languages. Also known as the International

withdrawn publications. Electrotechnical Vocabulary (IEV) on-line.

IEC Just Published - webstore.iec.ch/justpublished Customer Service Centre - webstore.iec.ch/csc

Stay up to date on all new IEC publications. Just Published If you wish to give us your feedback on this publication

details all new publications released. Available on-line and or need further assistance, please contact the

also once a month by email. Customer Service Centre: [e-mail].
A propos de la CEI

La Commission Electrotechnique Internationale (CEI) 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 CEI

Le contenu technique des publications de la CEI est constamment revu. Veuillez vous assurer que vous possédez

l’édition la plus récente, un corrigendum ou amendement peut avoir été publié.
Liens utiles:

Recherche de publications CEI - www.iec.ch/searchpub Electropedia - www.electropedia.org

La recherche avancée vous permet de trouver des Le premier dictionnaire en ligne au monde de termes

publications CEI en utilisant différents critères (numéro de électroniques et électriques. Il contient plus de 30 000

référence, texte, comité d’études,…). termes et définitions en anglais et en français, ainsi que

Elle donne aussi des informations sur les projets et les les termes équivalents dans les langues additionnelles.

publications remplacées ou retirées. Egalement appelé Vocabulaire Electrotechnique

International (VEI) en ligne.
Just Published CEI - webstore.iec.ch/justpublished
Service Clients - webstore.iec.ch/csc
Restez informé sur les nouvelles publications de la CEI.

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

Disponible en ligne et aussi une fois par mois par email. cette publication ou si vous avez des questions

contactez-nous: [e-mail].
---------------------- Page: 2 ----------------------
IEC 60519-10
Edition 2.0 2013-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Safety in electroheating installations –
Part 10: Particular requirements for electrical resistance trace heating systems
for industrial and commercial applications
Sécurité dans les installations électrothermiques –
Partie 10: Exigences particulières pour les systèmes de chauffage par traçage à
résistance électrique pour applications industrielles et commerciales
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX Q
ICS 25.180.10 ISBN 978-2-83220-672-0

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 – 60519-10 © IEC:2013
CONTENTS

FOREWORD ........................................................................................................................... 3

INTRODUCTION ..................................................................................................................... 5

1 Scope and object .............................................................................................................. 6

2 Normative references ........................................................................................................ 6

3 Terms and definitions ....................................................................................................... 7

4 Classification of electroheating equipment ......................................................................... 9

5 General requirements ....................................................................................................... 9

6 Isolation and switching .................................................................................................... 10

7 Connection to the electrical supply network and internal connections ............................... 11

8 Protection against electric shock ..................................................................................... 11

9 Equipotential bonding...................................................................................................... 11

10 Control circuits and control functions ............................................................................... 11

11 Protection against thermal influences .............................................................................. 12

12 Protection against other hazards ..................................................................................... 12

13 Marking, labelling and technical documentation ............................................................... 12

14 Commissioning, inspection, operation and maintenance .................................................. 13

Annex A (normative) Protection against electric shock – special measures ........................... 16

Bibliography .......................................................................................................................... 17

---------------------- Page: 4 ----------------------
60519-10 © IEC:2013 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SAFETY IN ELECTROHEATING INSTALLATIONS –
Part 10: Particular requirements for electrical resistance trace
heating systems for industrial and commercial applications
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 60519-10 has been prepared by IEC technical committee 27:

Industrial electroheating and electromagnetic processing.

This second edition cancels and replaces the first edition published in 2005. This edition

constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous

edition:
– The structure has been amended and adjusted to IEC 60519-1:2010;
1 2
– References to IEC 62395-1 and IEC 62395-2 have been completed.
———————
1 Second edition to be published.
2 First edition (replacing IEC/TS 62395-2:2008) to be published.
---------------------- Page: 5 ----------------------
– 4 – 60519-10 © IEC:2013
The text of this standard is based on the following documents:
CDV Report on voting
27/853/CDV 27/873/RVC

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.

A list of all parts in the IEC 60519 series, published under the general title Safety in

electroheating installations, can be found on the IEC website.

The clauses of parts of the IEC 60519 series (hereinafter called Particular requirements)

supplement or modify the corresponding clauses of IEC 60519-1:2010 (General requirements

hereinafter called Part 1).

This part of IEC 60519 is to be read in conjunction with Part 1. It supplements or modifies the

corresponding clauses of Part 1. Where the text indicates an "addition" to or a "replacement" of

the relevant provision of Part 1, these changes are made to the relevant text of Part 1. Where

no change is necessary, the words "This clause of Part 1 is applicable" are used. When a

particular subclause of Part 1 is not mentioned in this part, that subclause applies as far as is

reasonable.

Additional specific provisions to those in Part 1, given as individual clauses or subclauses, are

numbered starting from 101.
NOTE 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.

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.
---------------------- Page: 6 ----------------------
60519-10 © IEC:2013 – 5 –
INTRODUCTION

It is the objective of this standard that, when in accordance with the standard, electrical trace

heating systems operate safely under their normal defined conditions of use, by

a) employing heaters of the appropriate construction and meeting the test criteria detailed in

IEC 62395-1;

b) operating at safe temperatures when designed, installed, and maintained in accordance

with IEC 62395-2;

c) having at least the minimum levels of overcurrent and ground-fault protection, and an

evenly distributed electrically conductive metallic braid, sheath or other equivalent

electrically conductive material, as specified in IEC 62395-1 and IEC 62395-2.
---------------------- Page: 7 ----------------------
– 6 – 60519-10 © IEC:2013
SAFETY IN ELECTROHEATING INSTALLATIONS –
Part 10: Particular requirements for electrical resistance trace
heating systems for industrial and commercial applications
1 Scope and object
This clause of Part 1 is replaced by the following.
Replacement:

This part of IEC 60519 provides safety requirements for electrical resistance trace heating

systems used in industrial and commercial applications for piping, vessels, roofs, concrete slab

heating and other similar applications.

This standard pertains to trace heating systems that may comprise either factory fabricated or

field (work-site) assembled units, and which may be series heater cables, parallel heater

cables, heater pads or heater panels that have been assembled and/or terminated in

accordance with manufacturer’s instructions.
Typical applications include but are not limited to

• the freeze protection of pipes, tanks and vessels, including fire water systems;

• maintaining required temperatures of equipment, including pipes, tanks and vessels;

• earth thermal storage;
• hot water temperature maintenance;
• snow melting of surfaces;
• de-icing of roofs and gutters.

This standard does not include or provide for any requirements in potentially explosive

atmospheres.

This part of IEC 60519 does not cover induction, impedance or skin effect heating.

NOTE Specific requirements and test criteria for electrical resistance trace heating systems and design,

installation, and maintenance requirements for these systems are detailed in IEC 62395-1 and IEC 62395-2.

This standard provides general safety requirements for the installation, operation, maintenance

and repair of systems and individual circuits and for trace heating systems designs. These

safety considerations concern the protection of persons and the environment against dangers

of electrical origin and also against certain dangers of non-electrical origin, common to all

types of equipment and installations.
2 Normative references
This clause of Part 1 is applicable, except as follows.
Additions:

IEC 60519-1:2010, Safety in electroheating installations – Part 1: General requirements

---------------------- Page: 8 ----------------------
60519-10 © IEC:2013 – 7 –

IEC 62395-1 , Electrical resistance trace heating systems for industrial and commercial

applications – Part 1: General and testing requirements

IEC 62395-2 , Electrical resistance trace heating systems for industrial and commercial

applications – Part 2: Application guide for system design, installation and maintenance

3 Terms and definitions
This clause of Part 1 is applicable with the following additions.
Additions:
3.101
ambient temperature
average temperature of air or another medium in the vicinity of the equipment

Note 1 to entry: Where electrical trace heaters are enclosed in thermal insulation, the ambient temperature is the

temperature exterior to such thermal insulation.

[SOURCE: IEC 60050-826:2004, 826-10-03, modified – The content of the note has been

modified]
3.102
branch circuit

portion of the wiring installation between the overcurrent device protecting the circuit and the

trace heater(s)
3.103
end termination

termination, which may be heat producing, applied to a trace heater at the end opposite to that

where the power is supplied
[SOURCE: IEC 60050-426:2008, 426-20-04]
3.104
factory fabricated unit

trace heater cable, tape or device, including the necessary terminations and connections,

assembled by the manufacturer
3.105
field assembled unit

trace heaters supplied in bulk with terminating components to be assembled at the work site

3.106
heat loss
energy flow from a pipe, vessel or equipment to its surroundings
3.107
heater pad

trace heater comprising series or parallel connected elements having sufficient flexibility to

conform to the shape of the surface to be heated
———————
Second edition to be published.
First edition (replacing IEC/TS 62395-2:2008) to be published.
---------------------- Page: 9 ----------------------
– 8 – 60519-10 © IEC:2013
3.108
heater panel

non-flexible trace heater comprising series or parallel connected elements fabricated to

conform to the general shape of the surface to be heated
3.109
integral component

component such as a heat shrink termination, a cold lead connection, a moulded end seal or a

splice, which conforms to the general shape of the trace heater or surface heater and is

exposed to the same environment as the trace heater or surface heater, which may be factory-

fabricated or field-assembled, and which is not intended to be re-used in the event of a repair

or modification
3.110
minimum ambient temperature

lowest ambient temperature specified at which the trace heater is operable and performs

according to specified requirements
3.111
sheath

uniform and continuous metallic or non-metallic outer covering enclosing the trace heater, used

to provide protection for the cable against influence from the surroundings (corrosion,

moisture, etc.)
3.112
sheath temperature

temperature of the outermost continuous covering that may be exposed to the surrounding

atmosphere
3.113
temperature sensor
temperature sensing element

device designed to respond to temperature providing an electrical signal or mechanical

operation
3.114
thermal insulation

material having air- or gas-filled pockets, void spaces, or heat reflecting surfaces that, when

properly applied, retards the transfer of heat
3.115
trace heater

device designed for the purpose of producing heat on the principle of electrical resistance and

typically composed of one or more metallic conductors or an electrically conductive material,

suitably electrically insulated and protected

Note 1 to entry: This can be in the form of a trace heater cable, heater panel or heater pad.

3.116
trace heater cable

circular or flattened cable shaped construction with one or more discrete or continuous

electrically insulated heating elements
3.117
trace heater unit

series trace heater cable, parallel trace heater cable, heater pad or heater panel suitably

terminated in conformity with the manufacturer’s instructions
---------------------- Page: 10 ----------------------
60519-10 © IEC:2013 – 9 –
3.118
trace heating

utilisation of electric trace heater cables, pads, panels and support components, for the

purpose of raising or maintaining temperatures
3.119
weather barrier

material that, when installed on the outer surface of thermal insulation, protects the thermal

insulation from water or other liquids, from physical damage caused by sleet, wind or

mechanical abuse, and deterioration caused by solar radiation or atmospheric contamination

3.120
workpiece
object to which a trace heater is applied
4 Classification of electroheating equipment
This clause of Part 1 is applicable, except as follows.
Addition:
NOTE The majority of trace heaters are mains frequency equipment.
5 General requirements
This clause of Part 1 is applicable, except as follows.
Additions:
5.101 Trace heating system

Electrical resistance trace heating systems shall be operated and maintained to ensure safe

operation. This includes the requirement for metallic sheath, braid, screen, or equivalent

conductive material, overcurrent and ground fault equipment protection for each branch circuit,

and control and temperature requirements.

Specific requirements for the electrical, thermal and mechanical properties of trace heating

systems shall apply according to IEC 62395-1 and IEC 62395-2.

All parts of a trace heater unit intended for use in contact with potable water shall be

constructed of materials that meet the relevant toxicity requirement.
5.102 Typical applications

Trace heating systems can be grouped into four different types of installations. These are

characterized by different requirements for testing, and trace heating systems are usually

certified for a specific type of installation or application. Typical applications for the different

types of installation are as follows:

a) installations of trace heating on pipes, vessels and associated equipment – applications

include:
– freeze protection and temperature maintenance,
– hot water lines,
– oil and chemical lines,
– sprinkler systems;
---------------------- Page: 11 ----------------------
– 10 – 60519-10 © IEC:2013
b) outdoor exposed area installations of trace heating – applications include:
– roof de-icing,
– gutter and downspout de-icing,
– catch basins and drains,
– rail heating;
c) installation with embedded trace heating – applications include:
– snow melting,
– frost heave protection,
– floor warming,
– energy storage systems,
– door frames;

d) installations with trace heating inside conduit or piping – applications include:

– snow melting – in conduit,
– frost heave protection – in conduit,
– floor warming – in conduit,
– energy storage systems – in conduit,
– internal trace heating of potable water lines,
– enclosed drains and culverts.
5.103 Use of certified equipment

Trace heaters shall be certified for use in specific installations or applications and meet the

applicable requirements.

Connections and end terminations are either integral components or separate components.

Integral components, whether intended to be factory fabricated or field assembled, shall be

subjected to the same certification requirements as the trace heater. System components,

other than integral components, shall be evaluated in accordance with standards relevant to

their construction and use.

It is acceptable to substitute components of a trace heating system in accordance with the

following:

a) components specifically listed in the manufacturer's installation or maintenance instructions

shall not be replaced with similar parts unless authorized by the trace heating system

manufacturer;

b) generic components specified in the manufacturer's installation or maintenance instructions

may be replaced with any suitably rated and certified (if applicable) component;

c) components that are part of a wiring system that supplies power to the trace heater may be

replaced with suitable components acceptable to the local regulating authority.
6 Isolation and switching
This clause of Part 1 is applicable as related to the following required items:
a) a means of isolating all line conductors from the supply;
b) overcurrent protection;
c) ground fault equipment protection.
---------------------- Page: 12 ----------------------
60519-10 © IEC:2013 – 11 –
7 Connection to the electrical supply network and internal connections
This clause of Part 1 is applicable.
8 Protection against electric shock
This clause of Part 1 is applicable.
9 Equipotential bonding
This clause of Part 1 is applicable.
10 Control circuits and control functions

The provisions of Part 1 are applicable, except where not applicable to trace heating systems,

or except where modified by the following.
Additions:
10.101 General

When specified, a control and monitoring system shall be used that meets the minimum

requirements for the application type and the temperature accuracy required.

Such control and monitoring equipment typically provides overcurrent protection, residual

current protection and isolation and temperature limitations.
10.102 Mechanical controllers

Mechanical controllers, such as thermostats, utilise two alternative principles: a bimetallic

element or the expansion of a fluid confined within a bulb or a bulb and capillary. Changes in

temperature result in positional displacement actuating electrical contacts that open or close.

These are used to sense the ambient temperature or the temperature of the workpiece,

depending on the system specifications.

Mechanical controllers shall be contained in a housing appropriate for the installation.

Selection of the temperature sensor used with a mechanical controller shall take account of the

maximum temperature rating of the sensor and its component parts.
10.103 Electronic controllers

Electronic controllers typically use resistance temperature detectors (RTD, also known as

platinum resistance thermometers PRT), thermistors, thermocouples (TC) or other temperature

sensing devices. The controllers can be located at significant distances from the electric trace

heating circuits. These are often panel-mounted such that the panels can be located to allow

for ease of operator and maintenance access.

These controllers electronically process the sensor signal in order to switch electro-mechanical

relays or solid-state devices for on-off or phase control.

The sensors shall be installed and positioned in accordance with the instructions provided by

the manufacturer of the device and by the trace heating system manufacturer.
---------------------- Page: 13 ----------------------
– 12 – 60519-10 © IEC:2013
10.104 Verification of thermostat/controller settings

Control equipment set-points and functionality shall be checked to the manufacturer's

specifications and the values recorded in the commissioning log and the maintenance log.

Any changes to the controller settings shall be recorded together with reasons for the change.

Changes shall not impair the safety of the system.
10.105 Ground fault equipment protection

Each trace heater branch circuit or each trace heater shall have ground fault equipment

protection capable of interrupting high-impedance ground faults. This shall be accomplished by

a ground-fault equipment protective device with typically a nominal 30 mA trip rating or a

controller with ground-fault interruption capability for use in conjunction with suitable circuit

overcurrent protection. For higher leakage current circuits, the trip level for adjustable devices

is typically set at 30 mA above any inherent capacitive leakage characteristic of the heater as

specified by the manufacturer. Where conditions of maintenance and supervision ensure that

only qualified persons will service the installed systems and continued circuit operation is

necessary for the safe operation of the equipment or processes, ground-fault detection without

interruption is acceptable if alarmed in a manner to assure an acknowledged response.

11 Protection against thermal influences
This clause of Part 1 is applicable.
12 Protection against other hazards
This clause of Part 1 is applicable.
13 Marking, labelling and technical documentation
This clause of Part 1 is r
...