UNE-EN IEC 60519-12:2018

This part of IEC 60519 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.

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 1 mm in vacuum.

Industrial infrared heating commonly uses thermal infrared sources with rated temperatures

between 500 °C and 3 000 °C; the emitted radiation from these sources dominates in the

wavelength range between 780 nm and 10 ¼m.

Since substantial emission of thermal emitters may extend either to 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 standard.

This standard is not applicable to:

- infrared installations with lasers or light-emitting diodes (LEDs) as main sources they are

covered by IEC 62471:2006 and IEC 60825-1:2014;

appliances for use by the general public;

appliances for laboratory use 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, iron243

chromium-aluminium alloys or comparable materials;

wide-spectrum arc lamps