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BS EN IEC 60519-12:2018

BS EN IEC 60519-12:2018

$167.15

Safety in installations for electroheating and electromagnetic processing – Particular requirements for infrared electroheating

Published By Publication Date Number of Pages
BSI 2018 40
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This clause of Part 1 is replaced by the following.

Replacement:

This part of IEC 60519 specifies safety requirements for industrial electroheating equipment and installations in which infrared radiation ā€“ usually generated by infrared emitters ā€“ 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.

IEC 60519-1:2015 defines infrared as radiation within the frequency range between 400 THz and 300 GHz. This corresponds to a wavelength range between 780 nm and 10 Ī¼m in vacuum. Industrial infrared heating commonly uses thermal infrared sources with rated temperatures between 500 Ā°C and 3 000 Ā°C; the emitted radiation from these sources dominates in the wavelength range between 780 nm and 10 Ī¼m.

Since substantial emission of thermal emitters can extend either to wavelengths below 780 nm or above 3 000 nm, the safety aspects of emitted visible light and emission at wavelengths longer than 3 000 nm are also considered in this document.

This standard is not applicable to:

  • infrared installations with lasers or light-emitting diodes (LEDs) as main sources ā€“ they are covered by IEC 62471:2006 and IEC 60825-1:2014;

  • appliances for use by the general public;

  • appliances for laboratory use ā€“ they are covered by IEC 61010-1:2010;

  • electroheating installations where resistance heated bare wires, tubes or bars are used as heating elements, and infrared radiation is not a dominant side effect of the intended use, covered by IEC 60519-2:2006;

  • infrared heating equipment with a nominal combined electrical power of the infrared emitters of less than 250 W;

  • handheld infrared equipment.

Industrial infrared electroheating equipment under the scope of this standard typically uses the Joule effect for the conversion of electric energy into infrared radiation by one or several sources. Radiation is then emitted from one or several elements onto the material to be treated. Such infrared heating elements are in particular:

  • thermal infrared emitters in the form of tubular, plate-like or otherwise shaped ceramics with a resistive element inside;

  • infrared quartz glass tube or halogen lamp emitters with a hot filament as a source;

  • non insulated elements made from molybdenum disilicide, silicon carbide, graphite, ironchromium- aluminium alloys, refractory metals or comparable materials;

  • wide-spectrum arc lamps.

PDF Catalog

PDF Pages PDF Title
2 undefined
7 English
CONTENTS
9 FOREWORD
11 INTRODUCTION
12 1 Scope and object
13 2 Normative references
3 Terms, definitions and abbreviations
15 4 Classification and sub-division
16 5 Risk assessment
6 General provisions
7 Protection against electric shock
8 Protection against hazards caused by electric or magnetic nearfields
9 Protection against hazards from radiation
18 10 Protection against hazards from thermal influences
11 Protection against hazards from fire
12 Protection against hazards from fluids
13 Specific requirements for components and subassemblies
14 Control of the installation or equipment
15 Protection against mechanical hazards
16 Protection against hazards resulting from use
17 Protection against other hazards
18 Verification and testing
19 19 Information for use
20 Annex A (informative) List of significant hazards
21 Annex B (informative) Electric and magnetic fields, touch currents ā€“ limits of exposure hazards
22 Annex C (informative) Optical radiation ā€“ limits of exposure hazards
Figures
Figure C.101 ā€“ Risk groups and exposure limits (refer to Table C.1 of IEC 60519-1:2015) depending on time of exposure and irradiation
23 Figure C.102 ā€“ Risk groups and exposure limits (refer to Table C.2 of IEC 60519-1:2015) depending on time of exposure and radiance
24 Annex D (informative) Limits for exposure hazards ā€“ noise and vibration
25 Annex E (normative) Provisions concerning EMC
26 Annex F (normative) Marking and warning
27 Annex G (informative) Guidelines on using this standard
28 Annex H (informative) Connection with ISO 13577 series
29 Annex AA (informative) Procedure for reducing risk from infrared radiation
30 Tables
Table AA.1 ā€“ Procedure for assessment and reduction of radiation exposure through design
31 Annex BB (informative) Simplified measurement method for the assessment of thermal infrared radiation exposure
Table BB.1 ā€“ Measurement procedure
33 Figure BB.1 ā€“ Factors for converting measured total irradiance into band irradiance, depending on surface temperature of a grey emitter generating the signal
36 Figure BB.2 ā€“ Factor for converting measured total radiance into relevant retinal thermal radiance, depending on surface temperature of a grey emitter generating the signal
37 Annex CC (informative) Measurement device for total irradiance
Figure CC.1 ā€“ Example of a detector for total irradiance measurement
38 Bibliography

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BS EN IEC 60519-12:2018
$167.15