ITU-T K.51 PDF

Equipment covered by this Recommendation

This Recommendation is applicable to mains-powered, battery-powered or remotely-powered telecommunication network infrastructure equipment.

This Recommendation specifies requirements intended to reduce risks of fire, electric shock, mechanical hazards or injury for the designated classes of user, ordinary person, instructed person, service person and skilled person.

This Recommendation is intended to reduce such risks with respect to installed equipment, whether it consists of a system of interconnected units or independent units, subject to installing, operating and maintaining the equipment in the manner prescribed by the manufacturer.

Equipment complying with the relevant requirements in this Recommendation is considered suitable for use in a telecommunication network. However, this Recommendation does not include requirements for performance or functional characteristics of equipment.

Additional requirements

Requirements additional to those specified in this Recommendation may be necessary for:

– equipment intended for operation in special environments, for example: extremes of temperature; excessive dust, moisture or vibration; flammable gases; and corrosive or explosive atmospheres;

– equipment intended to be used in vehicles, on board ships or aircraft, in tropical countries, or at altitudes greater than 2000 m;

– equipment intended for use where ingress of water is possible.

NOTE – Attention is drawn to the fact that authorities of some countries impose additional requirements.