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 C22.1-09; General Requirements - Canadian Electrical Code, Part II, CSA C22.2 No. 0-10; the National Electrical Code, NFPA 70-2008; and the National Electrical Safety Code, IEEE C2-2007.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 75-2009.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).

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 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