Standards Development

Scope

This part of IEC 60335 deals with the safety of electric humidifiers intended for use with heating, ventilation, or air-conditioning systems in household, commercial, and light industrial applications (and can include large stand-alone commercial equipment) which operate according to the evaporative or atomization system, water-injection, steam and the like, their maximum rated voltage being not more than 300 V for single-phase appliances and 600 V for all other appliances including direct current (DC) supplied appliances and battery-operated appliances.

NOTE 101 Air-conditioning equipment to be used in conjunction with the humidifiers covered by this document are covered in IEC 60335-2-40.

Appliances not intended for normal household use but which nevertheless can be a source of danger to the public, such as appliances intended to be used by laymen in shops, in light industry and on farms, are within the scope of this standard.

This document deals with the reasonably foreseeable hazards presented by appliances that are encountered by all persons. However, in general, it does not take into account:

– persons (including children) whose

• physical, sensory or mental capabilities; or

• lack of experience and knowledge prevents them from using the appliance safely without supervision or instruction;

– children playing with the appliance.

Additional requirements can be necessary for appliances intended to be used in vehicles or on board ships or aircraft. In many countries, additional requirements are specified by the national health authorities, the national authorities responsible for the protection of labour, the national water supply authorities and similar authorities.

This standard does not apply to:

– appliances intended exclusively for industrial purposes;

– appliances intended to be used in locations where special conditions prevail, such as the presence of a corrosive or explosive atmosphere (dust, vapor or gas);

– audio, video and similar electronic apparatus (IEC 60065);

– appliances for medical purposes medical electrical equipment (IEC 60601 series);

– hand-held motor-operated electric tools (IEC 60745 series);

– personal computers and similar equipment information technology equipment (IEC 60950-1);

– transportable motor-operated electric tools (IEC 61029 series);

– audio/video, information and communication technology equipment (IEC 62368-1);

– electric motor-operated hand-held tools, transportable tools and lawn and garden machinery (IEC 62841 series);

– humidifiers without room heating, ventilation or air-conditioning equipment intended exclusively for household use (IEC 60335-2-98);

– appliances designed exclusively for industrial processing.

NOTE 102 Attention is drawn to the fact that

– for appliances intended to be used in vehicles or on board ships or aircraft, additional requirements can be necessary;

– in many countries, additional requirements are specified by national health authorities, national authorities responsible for the protection of labour and similar authorities.