UL 60950-1

Information Technology Equipment - Safety - Part 1: General Requirements

This standard is applicable to mains-powered or battery-powered information technology equipment, including electrical business equipment and associated equipment, with a RATED VOLTAGE not exceeding 600 V and designed to be installed in accordance with the Canadian Electrical Code, Part I, CSA C22.1-12; General Requirements - Canadian Electrical Code, Part II, CSA C22.2 No. 0-10; the National Electrical Code, NFPA 70-2014; and the National Electrical Safety Code, IEEE C2-2012.The standard is also applicable to equipment, unless otherwise identified by a marking or instructions, designed to be installed in accordance with Article 645 of the National Electrical Code, ANSI/NFPA 70, and the Standard for the Protection of Information Technology Equipment, NFPA 75-2013.See Annex nae for examples of and references to regulatory requirements that apply to this equipment.This standard is also applicable to such information technology equipment:

-     designed for use as telecommunication terminal equipment and TELECOMMUNICATION NETWORK infrastructure equipment, regardless of the source of power;

-     designed and intended to be connected directly to, or used as infrastructure equipment in, a CABLE DISTRIBUTION SYSTEM, regardless of the source of power;

-     designed to use the AC MAINS SUPPLY as a communication transmission medium (see Clause 6, Note 4 and 7.1, Note 4).

-     components and subassemblies intended for incorporation in this equipment. Such components and subassemblies need not comply with every requirement of the standard, provided that the complete equipment, incorporating such components and subassemblies, does comply;

-     external power supply units intended to supply other equipment within the scope of this part of IEC 60950;

-     accessories intended to be used with equipment within the scope of this part of IEC 60950.

Requirements additional to those specified in this standard 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);

-     electromedical applications with physical connections to the patient;

-     equipment intended to be used in vehicles, on board ships or aircraft, in tropical countries, or at altitudes greater than 2 000 m;

-     equipment intended for use where ingress of water is possible; for guidance on such requirements and on relevant testing, see Annex t.

This standard does not apply to:

-     power supply systems which are not an integral part of the equipment, such as motor-generator sets, battery backup systems and distribution transformers;

-     building installation wiring;

-     devices requiring no electric power.


  • Edition Number: 2
  • Edition Date: 03/27/2007
  • Price Code: G
  • Type: uliec
  • ANSI Approved: 10/14/2014
  • DOD Approved: 12/21/1994