UL Online Certifications Directory

GENERAL

This category covers power supplies rated 600 V or less, intended for use with information technology equipment (ITE) including electrical business equipment. End-use products that employ these types of power supplies are covered under Information Technology Equipment Including Electrical Business Equipment (NWGQ).

These power supplies are stand-alone units that deliver power to ITE via external interconnecting means.

This category also covers modular accessory power supplies. Such power supplies are types that are intended for field installation within personal computers, similar ITE, including telephone equipment. These modular power supplies are also provided with installation instructions relative to safe installation.

All power-supply types covered under this category are marked with input and output ratings that include the voltage and intended maximum load rating in amperes.

When power supplies intended for use with a detachable power-supply cord are not provided with such a cord, a cord suitable for connection of the equipment to the branch circuit is to be separately provided.

The investigation of a product covered under this category does not include the effects it may have on the system or equipment to which it is connected.

REBUILT PRODUCTS

This category also covers power supplies that are rebuilt by the original manufacturer or another party having the necessary facilities, technical knowledge and manufacturing skills. Rebuilt power supplies are rebuilt to the extent necessary by disassembly and reassembly using new or reconditioned parts. Rebuilt power supplies are subject to the same requirements as new power supplies.

PRODUCT IDENTITY

One of the following product identities appears on the product:

    60950-1

    60950-22

    Information Technology Equipment Power Supply

    I.T.E. Power Supply

    ITE Power Supply

    QQGQ Power Supply

    UL 60950-1

    UL 60950-22

The product identity for accessories includes the word "Accessory."

ADDITIONAL INFORMATION

For additional information, see Power Supplies (QQAQ) and Electrical Equipment for Use in Ordinary Locations (AALZ).

REQUIREMENTS

The basic standards used to investigate products in this category are ANSI/UL 60950-1, "Information Technology Equipment - Safety - Part 1: General Requirements," and ANSI/UL 60950-22, "Information Technology Equipment - Safety - Part 22: Equipment to be Installed Outdoors."

All low-voltage outputs (maximum 42.4 V peak or 60 V dc) are safety extra-low-voltage (SELV) as defined in ANSI/UL 60950-1, and, where noted in the test report, SELV for wet locations as defined in ANSI/UL 60950-22. An output marked "LPS" has been determined to have an output level at or below the limited power-source level specified in ANSI/UL 60950-1, as it relates to the requirements for equipment supplied by the output.

An output marked "Class 2" has additionally been investigated to ANSI/UL 1310, "Class 2 Power Units."

UL MARK

The Certification Mark of UL on the product is the only method provided by UL to identify products manufactured under its Certification and Follow-Up Service. The Certification Mark for these products includes the UL symbol, the words "CERTIFIED" and "SAFETY," the geographic identifier(s), and a file number.

Additional Certification Markings

Products covered under this category are additionally marked with the following information:

Alternate UL Mark

The Listing Mark of UL on the product is the only method provided by UL to identify products manufactured under its Listing and Follow-Up Service. The Listing Mark for these products includes the UL symbol (as illustrated in the Introduction of this Directory) together with the word "LISTED," a control number or file number, and the category identifier "Information Technology Equipment Power Supply" (or "I.T.E. Power Supply" or "ITE Power Supply"), "QQGQ Power Supply," or the standard number with or without the "ANSI/UL" prefix (e.g., "ANSI/UL 60950-1," "60950-1").

For accessories, the Listing Mark is applied to modular accessory power supplies on an external surface that will be enclosed within the end-use product. The category identifier for accessories includes the word "Accessory."

For rebuilt products the word "Rebuilt,""Remanufactured" or "Reconditioned" precedes the product name.

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