This part of IEC 60519 provides particular safety requirements for arc furnace installations. This document deals with the significant hazards, hazardous situations or hazardous events relevant to industrial arc furnace installations, as listed in Annex A, for normal operation and for single fault condition as well as under conditions of reasonably foreseeable misuse. This document specifies the requirements intended to be met by the manufacturer to ensure the safety of persons and property during the complete life cycle of the equipment from design through commissioning, operation, maintenance, inspection, to decommissioning, as well as in the event of foreseeable single fault condition that can occur in the equipment. The rated voltage of arc furnace installation can be in the range of low voltage or high voltage, details are given in 4.2. This standard is applicable to arc furnace installations such as: a) furnaces for direct arc heating, forming arcs between the electrode and metal such as the electric arc furnace using alternating current (EAF AC) or direct current (EAF DC), and the ladle furnace (LF); b) furnaces for arc-resistance heating forming arcs between the electrode and the charge material or heating the charge material by the Joule effect, such as the submerged arc resistance furnace using alternating current (SAF AC), or direct current (SAF DC). NOTE In some documents the terms smelter or electrical reduction furnace are used. Furnace installation for unattended operation is not covered by this standard. This document does not provide requirements for type testing. NOTE Industrial equipment covered by this document is typically produced as a single unit or a very small number of units; such unit usually has a very high value and can cause severe harm at disintegration. This document does not address data security and hazards arising from neglect of security. With respect to noise of electrical an arc furnace, ISO 13578:2017, 6.1.23 applies.

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1	30463381
77	A-30366179
78	undefined
83	Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
88	English CONTENTS
92	FOREWORD
95	INTRODUCTION
96	1 Scope 2 Normative references
97	3 Terms, definitions and abbreviated terms 3.1 General concepts 3.2 Equipment and state of equipment
100	3.3 Parts and accessories 3.4 Safety related concepts 3.5 Abbreviated terms 4 Classification and subdivision of equipment and installations 4.1 Classification by processing frequency 4.2 Classification by voltage 4.3 Subdivision of installation and equipment 4.4 Classification of hazards and risks
101	5 Risk assessment 6 General provisions 6.1 Basic considerations 6.2 Significant hazards 6.3 Physical environment and operating conditions for the installation as such and electrical equipment outside the processing equipment
102	6.4 Physical environment and operating conditions for electrical equipment caused by operation of the processing equipment 6.5 Power supply
103	6.6 Access 6.7 Ergonomic aspects 6.8 Transport and storage 6.9 Provisions for handling
104	6.10 Consumables and replaceable parts 7 Protection against hazards from electric shock 7.1 General 7.2 Fundamental rule of protection 7.3 General provisions
105	7.4 Basic protection 7.5 Provisions for protection in electric single fault condition 7.6 Protective equipotential bonding
106	7.7 Additional provisions for fault protection for frequencies above 200 Hz 7.8 Currents in protective conductors 7.9 Touch current and touch voltage 7.10 Conductors and insulations at high temperature 7.11 Non-electric faults 8 Protection against hazards from electric or magnetic fields 8.1 General
107	8.2 Magnetic fields 8.3 Magnetic fields below 1 Hz 8.4 Local electric fields 8.5 Requirements related to barriers and screens 8.6 Requirements related to objects worn, carried or held by persons 9 Protection against hazards from radiation 9.1 General 9.2 Installation or equipment generating ionizing radiation 9.3 Ultraviolet radiation 9.4 Visible and infrared radiation
108	9.5 Laser sources 10 Protection against hazards from thermal influences 10.1 General 10.2 Surface temperature limits for protection against burn 10.3 Hazards caused by working conditions 10.4 Temperature resistance of components
109	10.5 Cooling 10.6 Over-temperature protection 11 Protection against hazards from fire 12 Protection against hazards from fluids 13 Specific requirements for components and subassemblies 13.1 General 13.2 Electrical equipment and conductors
110	13.3 Connection to the electrical supply network and internal connections 13.4 Isolation and switching
112	13.5 Sensors and actuators safeguarding moving parts 13.6 Motors 13.7 Non electric-heating means 13.8 Lighting
113	13.9 Structural parts and stability 13.10 Doors, windows and other openings 13.11 Transformers, inductors, capacitors 13.12 Handheld applicators 13.13 Vacuum systems 13.14 Protective and reactive gas generator 14 Control of the installation or equipment 14.1 General 14.2 Operator control unit
114	14.3 Emergency stop 14.4 Control systems and their safety functions 14.5 Controlgear 14.6 Protective devices 14.7 Over-temperature protection devices and systems 14.8 Overpressure safety device
115	15 Protection against mechanical hazards 16 Protection against hazards resulting from use 16.1 Particular hazards in processing of food, feed, cosmetics and similar intended for human or animal consumption 16.2 Combination equipment 17 EMC 17.1 Radio frequency interference 17.2 Immunity 18 Verification and testing 18.1 General
116	Tables Table 1 – Methods for the verification of requirements
117	18.2 Performing measurements and tests 18.3 Verification of requirements from references
118	18.4 Examination of drawings or calculations 18.5 Visual inspection 18.6 Measurements 18.6.1 Environment and operating conditions inside the processing equipment 18.6.2 Impedance of protective bonding 18.6.3 Insulation resistance measurement
119	Table 101 – Test voltages of the Insulation measurement Table 102 – Installation progress of EAF and LF
120	18.6.4 Measurement of electric or magnetic fields 18.6.5 Touch current measurement 18.6.6 Measurement of ionising radiation 18.6.7 Measurement of non-coherent optical irradiation 18.6.8 Measurement of coherent optical radiation 18.6.9 Surface temperature measurement 18.6.10 Temperature of structural components subject to heat 18.7 Functional tests 18.7.1 Protection by automatic disconnection of supply 18.7.2 Voltage test 18.7.3 Dielectric test
121	18.7.4 Accessibility of live parts 18.8 Numerical calculations and modelling 19 Information for use 19.1 General requirements 19.2 Location and nature of the information for use 19.3 Signalling and warning devices 19.4 Markings, pictograms, written warnings 19.5 Instruction handbook
123	Annex A (normative)Lists of significant hazards
124	Annex B (normative)Limits to touch currents
125	Annex C (normative)Non coherent optical radiation – Limits and risk classes
126	Annex D (normative)Electric and magnetic fields
127	Annex E (normative)Surface temperature limits
128	Annex F (normative)EH, EMP and fire
129	Annex G (normative)Marking and warning
130	Annex H (normative)Guidelines on using this document
131	Annex I (informative)Connection with ISO 13577 (all parts)
132	Annex J (informative)Requirements specific to the EU and associated countries
133	Annex AA (normative)Systems to assure improved safety for personnel working in the vicinity of electrodes and other live parts of secondary circuit
135	Figures Figure AA.1 – AC furnace supply according to design arrangements “a” Figure AA.2 – AC furnace supply according to design arrangements “b”
136	Figure AA.3 – AC furnace supply according to design arrangements “c”
137	Figure AA.4 – DC furnace supply according to design arrangements “d” Figure AA.5 – DC furnace supply according to design arrangements “e”
138	Figure AA.6 – Six electrode AC furnace supply with current converteraccording to design arrangements “f”
139	Annex BB (normative)Limits to touch currents
140	Bibliography

Status	Definitive
Pages	142
Publication Date	2022-10-24
ISBN	978 0 539 24275 1
Standard Number	BS EN IEC 60519-4:2021 – TC
Title	Tracked Changes. Safety in installations for electroheating and electromagnetic processing – Particular requirements for arc furnace installations
Descriptors	Equipment safety, Resistance furnaces, Arc furnaces, Control equipment, Heating equipment, Furnaces, Electromagnetic fields, Maintenance, Safety devices, Safety measures, Marking, Electric furnaces, Installation, Protected electrical equipment, Electromagnetic compatibility, Inspection, Electrical installations, Design, Fire safety, Occupational safety, Electrical equipment, Electrical safety
Publisher	BSI
Committee	PEL/27
ICS Codes	25.180.10 - Electric furnaces


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