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  当前位置:网站首页>>认证知识>>UL认证
  文章标题:《UL 的产品类别 NWGQ2》
  发表日期:2005年10月9日   出处:转自UL网站      已经有481位读者读过此文


The devices covered under this category are incomplete in certain constructional features or restricted in performance capabilities and are intended for use as components of complete equipment submitted for investigation rather than for direct separate installation in the field. THE FINAL ACCEPTANCE OF THE COMPONENT IS DEPENDENT UPON ITS INSTALLATION AND USE IN COMPLETE EQUIPMENT SUBMITTED TO UNDERWRITERS LABORATORIES INC.

GENERAL

This category covers components intended for use in information technology equipment.

Devices in this category may have the following features as indicated in the individual Recognitions:

Feature  
Rated Input Volts Rated input voltage and frequency or dc of component
Load Amps Maximum current loading of component during normal operation
F/R Flame rating of fire enclosure (V-1, V-0 or 5V) or decorative bezel (DEC/HB or DEC/V-2)
Laser Class Component's laser class in accordance with FDA 21 CFR, Sub-part J (I, II, IIa, IIIa, IIIb)

CONDITIONS OF ACCEPTABILITY

Consideration is to be given to the Conditions of Acceptability specified in the individual Recognitions when these components are employed in the end-use equipment.

REQUIREMENTS

The basic standards currently used to investigate products in this category are UL 60950 or UL 60950-1, "Safety of Information Technology Equipment," or UL 60950-21, "Safety of Information Technology Equipment - Remote Power Feeding," as appropriate.



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