TC 27 - Industrial electroheating and electromagnetic processing

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.

IEC 60779:2020 specifies the test procedures, conditions and methods for determining the main performance parameters and operational characteristics of electroslag remelting furnaces.
Measurements and tests that are solely used for the verification of safety requirements of the installations are outside the scope of this document and are covered by IEC 60519-1 and IEC 60519-8.
This third edition cancels and replaces the second edition published in 2005. It constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
- the structure has been redrafted according to IEC 60398:2015;
- the scope and object have been redrafted;
- the terms/definitions, normative references and bibliography have been updated and completed;
- all test methods and content from IEC 60779:2005 that have been included in IEC 60398:2015 have been removed to avoid any duplication.

IEC 60519-8:2020 specifies particular safety requirements for electroslag remelting equipment and installations.
This document specifies safety requirements applicable to mainly electroheating installations for remelting and, in some cases, for refining processes of metals through direct resistance heating of a conductive slag.
The object of this document is to specify the particular requirements for the safety of persons in or around an electroslag remelting furnace. The general requirements are included in IEC 60519-1.
This third edition cancels and replaces the second edition published in 2005. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) the structure has been redrafted according to IEC 60519-1:2020;
b) the Scope has been redrafted;
c) the terms and definitions, normative references and bibliography have been updated and completed;
d) all requirements and content from IEC 60519-8:2005 that have been included in IEC 60519‑1:2020 have been removed to avoid any duplication.

IEC 60519-1:2020 is available as IEC 60519-1:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60519-1:2020 specifies the general safety requirements for industrial installations or equipment intended for electroheating (EH) and electroheating based treatment technologies as well as for electromagnetic processing of materials (EPM). This document deals with the significant hazards, hazardous situations or hazardous events relevant to industrial EH and EPM equipment, as listed in Annex A, for normal operation and for single fault condition as well as under conditions of reasonably foreseeable misuse. This sixth edition cancels and replaces the fifth edition published in 2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- removal of noise from the scope;
- clarification of EMC requirements;
- risk classification of hazards based on emission for all processing frequencies;
- clarification of boundaries between IEC 60519 (all parts) and ISO 13577 (all parts).

IEC 63078:2019 specifies the test procedures, conditions and methods for determining the main performance parameters and operational characteristics of induction through-heating installations.
Measurements and tests that are solely used for the verification of safety requirements of the installations are outside the scope of this document and are covered by IEC 60519-1 and IEC 60519-3.

IEC TS 62996:2017(E) addresses the safety assessments in the frequency range between 1 kHz and 6 MHz and provides limits for touch and touch currents for industrial installations or equipment for electroheating (EH) and electromagnetic processing of materials (EPM). Indirect contact by capacitive currents to parts of an earthed human body in an open space are also included, since the current is then distributed analogously in the part of the body and differs from cases of induced electric shock.

IEC/TS 62997:2017(E) specifies the characteristics of external magnetic nearfields, computations of and requirements on induced electric fields in body tissues in the frequency range from 1 Hz to 6 MHz with respect to induced electric shock phenomena, for electroheating (EH) based treatment technologies and for electromagnetic processing of materials (EPM). The phenomena include specific absorption rates with time integration.

IEC 60519-12:2016 specifies safety requirements for industrial electroheating equipment and installations in which infrared radiation – usually generated by infrared emitters – is significantly dominating over heat convection or heat conduction as means of energy transfer to the workload. A further limitation of the scope is that the infrared emitters have a maximum spectral emission at longer wavelengths than 780 nm in air or vacuum, and are emitting wideband continuous spectra such as by thermal radiation or high pressure arcs. This second edition cancels and replaces the first edition published in 2013. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a. the structure has been redrafted according to IEC 60519-1:2015;
b. terms/definitions, normative references and bibliography have been updated and completed;
c. all requirements and content from IEC 60519-12:2013 that have been included in IEC 60519-1:2015 have been removed to avoid any duplication.

IEC 60398:2015 specifies the basic test procedures, conditions and methods for establishing the main performance parameters and the main operational characteristics of industrial installations and equipment intended for electroheating (EH) or electromagnetic processing of materials (EPM). This third edition cancels and replaces the second edition of IEC 60398 published in 1999 and the first edition of IEC TS 62796 published in 2013. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- the title and scope of the standard have been expanded to include installations and equipment for electromagnetic processing of materials;
- the requirements have been restructured;
- tests concerning safety have been moved to IEC 60519-1;
- new tests and clauses addressing energy efficiency considerations have been added;
- a new annex placing this standard in the context of energy efficiency assessment as developed by ISO and IEC has been added;
- new annexes addressing visual display of data, estimation of energy use and energy recoverability of fluids have been added.

IEC 62798:2014 specifies test procedures, conditions and methods according to which the main parameters and the main operational characteristics of industrial infrared emitters are established. A limitation of the scope of this standard is that the infrared emitters have a maximum spectral emission at longer wavelengths than 780 nm in air or vacuum, and are emitting wideband continuous spectra such as by thermal radiation or high pressure arcs. The contents of the corrigendum of November 2014 have been included in this copy.

IEC 62395-2:2013 provides detailed recommendations for the system design, installation, maintenance and repair of electrical resistance trace heating systems in industrial and commercial applications. This standard does not include or provide for any applications in potentially explosive atmospheres. This standard cancels and replaces IEC/TS 62395-2:2008. This standard includes the following significant technical changes with respect to IEC/TS 62395-2:2008:
- This document has been changed from a Technical Specification to an International Standard.
- Design considerations for trace heating on sprinkler systems have been expanded and a figure has been added to illustrate how to avoid undue shadowing of spray patterns from insulated sprigs close to sprinkler heads;
- Specific details of design considerations for trace heating for emergency eyewash units and safety showers have been added.

IEC 62395-1:2013 specifies requirements for electrical resistance trace heating systems and includes general test requirements. This second edition cancels and replaces the previous edition published in 2006 and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- Tests have been added for trace heating on sprinkler systems;
- The flammability test has been changed to align with the latest draft of future IEC/IEEE 60079-30-1;
- A supplementary test has been added for the verification of sheath temperature using trace heating mounted on a plate fixture.

IEC 60519-4:2013 provides particular safety requirements for electric arc furnace installations and its operating and maintenance personnel. These safety provisions concern the protection of persons and the environment against dangers of electrical origin and also against certain dangers of non-electrical origin. This fourth edition cancels and replaces the third edition published in 2006. 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;
- The classification (Clause 4) has been adapted to details with respect to secondary voltage in electric arc furnace installations;
- All provisions have been redrafted and the text is more concise with respect to EAF;
- Annexes AA, BB and CC have been restructured, with respect to details concerning high voltage designs and non-electrical issues, however to be aware of in those installations.
This publication is to be read in conjunction with IEC 60519-1:2010.

IEC 62693:2013 specifies test procedures, conditions and methods according to which the main parameters and the main operational characteristics of industrial infrared electroheating installations are established. A limitation of the scope is that the infrared emitters have a maximum spectral emission at longer wavelengths than 780 nm in air or vacuum, and are emitting wideband continuous spectra such as by thermal radiation or high pressure arcs.

IEC 60676:2011 specifies test procedures, conditions and methods according to which the main parameters and the main operational characteristics of electric arc furnaces (EAF) operated either with alternating current (EAFac) or with direct current (EAFdc) with a capacity above 500 kg/heat are established. This third edition cancels and replaces the previous edition published in 2002 and constitutes a technical revision. Significant technical changes with respect to the previous edition are as follows:
- Clause 1 (Scope and object) - types of furnaces are more clearly defined.
- Clause 2 (Normative references) and Clause 3 (Terms and definitions) have been updated and completed.
- New Clause 4 (Features of the EAFsystem) has been added; it mainly concentrates on the tests necessary for high-voltage / high-current electrical equipment in the installation.
- Clause 5 (Type of tests and general conditions of their performance) and Clause 6 (Technical tests) have been modified according to today's requirements for safe operation of an EAF.

IEC 60683:2011 specifies test procedures, conditions and methods according to which the main parameters and the main operational characteristics of a submerged-arc furnace (SAF) with rated electrical power levels above 500 kVA are established. This standard is applicable to SAF with one or more electrodes. In order to determine further technical or economic assessments, additional tests may be necessary. Tests for some special equipment for semiconductor converter controlled furnaces, such as controlled rectifiers or controlled a.c. converters, are covered by IEC 60146-1-1. This second edition cancels and replaces the previous edition published in 1980 and constitutes a technical revision. Significant technical changes with respect to the previous edition are as follows:
- Clause 1 (Scope and object) - the types of furnaces covered by this standard are more clearly defined.
- Clause 2 (Normative references) and Clause 3 (Terms and definitions) have been updated and completed.
- A new Clause 4 (Features of the SAF sytem) has been added; it mainly concentrates on the tests necessary for high voltage/high current electrical equipment in the installation.
- Clause 5 (Tests and general conditions) and Clause 6 (Technical tests) have been modified according to today's requirements for safe operation of a SAF.

IEC 61307:2011 specifies test methods for the determination of the available microwave output power and the efficiency of frequency conversion from the electrical input in industrial microwave heating installations. This standard also specifies test methods for assessing the microwave power deposition in the microwave workload - the microwave workload power, in microwave-only installations. This standard is applicable to industrial microwave heating equipment and installations in the frequency range from 300 MHz to 300 GHz. This third edition cancels and replaces the second edition published in 2006. It constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) it covers how to measure not only the microwave power output of all typical equipment designs, but also the system efficiency, including the standby and hibernation modes;
b) the handling of the former A and B types of equipment is replaced by measurements of the available microwave power output and microwave workload power, respectively.

IEC 60519-6:2011 is applicable to equipment using microwave energy alone or in combination with other kinds of energy for industrial heating of materials. This part is applicable to industrial microwave heating equipment operating in the frequency range 300 MHz to 300 GHz. This third edition cancels and replaces the second edition published in 2002 and constitutes a technical revision. The significant changes with respect to the previous edition are as follows:
- the third edition of IEC 60519-1:2003 has been taken into account (the structure of clauses was adapted to it as far as practicable);
- some definitions are modified or brought into line with IEC 60050-841:2004;
- clauses on abnormal operation, access openings, microwave enclosure and barriers are added;
- the microwave leakage measurements are in a normative Annex A;
- an informative Annex B on the rationales for microwave exposure and leakage limits is added;
- Bibliography is added.
This publication is to be read in conjunction with IEC 60519-1:2003.

IEC 60703:2008 lays down the test methods to determine the essential parameters, technical data and characteristics of electroheating installations comprising one or more electron guns. The significant changes with respect to the previous edition are as follows: the latest edition of IEC 60519-7 has been taken into account; test requirements have been completed.

IEC/TS 60680 specifies test methods for thermal plasma torch systems and installations using thermal plasma torch systems. Standardizes the test methods and conditions for determining the main parameters and technical characteristics. Safety requirements for these systems and installations or equipment are given in IEC/TS 60519-5.

Deals with safety of electroheat installations with electron guns and applies to all electroheat applications with electron guns. May also be used for non-thermal applications with electron guns and equipment employing glow discharge systems. Applies also to high-voltage sources feeding electron guns. The main changes with respect to the previous edition cover:
- new editions of IEC publications taken into account;
- addition of new clauses;
- requirements for the earthing system updated;
- arrangement of return conductor changed.

Lays down requirements common to installations using the effect of electromagnetic forces on liquid metals; specific requirements for electromagnetic pouring equipment; specific requirements for electromagnetic equipment with lining. The significant changes with respect to the previous edition are the latest editions of IEC 60519-1:2003 and IEC 60519-3:2005 which have been taken into account. To be used in conjunction with IEC 60519-1.

Standardizes test methods to determine the essential parameters and technical characteristics of electroheat installations comprising furnaces. Applies to electrical installations comprising industrial induction channel furnaces and induction crucible furnaces for melting, holding and superheating.

Is applicable to industrial high-frequency dielectric heating installations used for the purpose of thermal applications such as melting, drying, welding, insect extermination, and gluing of partially conductive or non-conductive materials. Assists in compliance with the requirements set out in 6.4 of IEC 60519-9 when testing electroheating power sources.

Applicable to industrial electroslag remelting furnaces having one or more electrodes and having different melting power supplies, such as alternating current, direct current, or low-frequency current. Standardizes electroslag remelting furnace test conditions and methods to determine the main parameters and technical characteristics. The contents of the corrigendum of December 2008 have been included in this copy.

Specifies the dimensions of turned and threaded cylindrical graphite arc furnace electrodes and graphite electrode pins for use as full graphite electrode columns on arc furnaces. Is essential for the interchangeability of electrodes from different sources.

Consists of requirements common to both induction and conduction heating installations and induction melting installations, and specific requirements for induction and conduction heating installations, and specific requirements for induction melting installations.

Applicable to industrial radio- or high-frequency induction heating installations used for the purpose of thermal applications (e.g. for surface hardening, welding, soldering, melting, forging, zone refining of semiconductors, etc.). Relates to high-frequency induction heating installations in the frequency range up to 300 MHz for power levels of 500 W and above, comprising high-frequency generators and inductors together with necessary mechanical devices for charge handling (e.g. hardening machines). The main purpose is to provide the test methods for the determination of output power of industrial high-frequency induction heating power sources.

Applies to cylindrical carbon electrodes, manufactured from upgraded coal, for use in electric direct-arc and submerged-arc furnaces, for melting silicium and carbide and for other purposes. Covers a) dimensions and tolerances on the length and diameter of carbon electrodes b) dimensions and thread details for carbon electrode heads and sockets.