1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUNDERWRITERS LABORATORIES INC. CERTIFICATION REQUIREMENT DECISIONThis Certification Requirement Decision is prepared and published by Underwriters Laboratories Inc.(UL). It is normative for the a
2、pplicable UL Product Certification Program(s); however, it is currently notpart of the UL Standard(s) referenced below.Product Category (CCN): XUUMStandard Number: UL 1086Edition Date: June 28, 2005Edition Number: 5Section / Paragraph Reference: 40 & 48Subject: Direct Current (DC) Dielectric Test Po
3、tentialsDECISION:40.1 (REVISED) An appliance shall withstand for 1 minute without breakdown the application of a DCpotential or an AC 60-Hz essentially sinusoidal potential between live parts and dead metal parts, andbetween live parts of opposite polarity for a test on a capacitor used for radio-in
4、terference elimination orarc-suppression, with the appliance at the maximum operating temperature reached in normal use. Thetest potential shall be:a) One thousand volts1000 V AC or 1400 V DC for an appliance employing a motor rated 1/2hp or less. See 17.4.b) One thousand volts1000 V AC plus twice r
5、ated voltage or 1400 V DC plus 2.8 times ratedvoltage for an appliance employing a motor rated more than 1/2 hp. See 17.4.48.1 (REVISED) Each appliance shall withstand without electrical breakdown, as a routine production-linetest, the application of a DC potential or an AC potential at a frequency
6、within the range of 40 - 70 Hz,between the primary wiring, including connected components, and accessible dead metal parts that arelikely to become energized, and between primary wiring and accessible low-voltage - 42.4 V peak or less- metal parts, including terminals.Table 48.1Production-line test
7、conditionsAppliancerating, VCondition A Condition BPotential, V Time, s Potential, V Time, sAC DC AC DC250 V or lesswith or without amotor rated 1/2hp1000 1400 60 1200 1700 1Rated more than250 V or with amotor ratedmore than 1/2hp1000 + 2V 1400 + 2.8V 60 1200 + 2.4V 1700 + 3.4V 1V = maximum marked v
8、oltage.48.6 (REVISED) The test equipment shall include a transformer having a DC output or an essentiallysinusoidal adequate output, a means of indicating the test potential, an audible or visual indicator ofelectrical breakdown, and either a manually reset device to restore the equipment after elec
9、tricalbreakdown or an automatic reject feature of any unacceptable unit.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULRATIONALE FOR DECISION:The Dielectric Voltage-Withstand Test may be conducted with either an AC or DC test potential. Whent
10、esting with a DC voltage, the test potential must be adjusted to obtain the peak voltage equivalent to theAC RMS test potential.Copyright 2012 Underwriters Laboratories Inc.UL, in performing its functions in accordance with its objectives, does not guarantee or warrant thecorrectness of Certificatio
11、n Requirement Decisions it may issue or that they will be recognized or adoptedby anyone. Certification Requirement Decisions are the opinion of Underwriters Laboratories Inc. inpractically applying the requirements of the standard. They do not represent formal interpretations of thestandard under A
12、merican National Standards Institute (ANSI) processes. UL shall not be responsible toanyone for the use of or reliance upon Certification Requirement Decisions by anyone. UL shall not incurany obligation or liability for damages, including consequential damages, arising out of or in connectionwith the use or reliance upon Certification Requirement Decisions. The electronic version of theCertification Requirement Decision is the current version and previously printed copies may be outdated.This document is published as a service to ULs certification customersSTANDARD NUMBER: UL 1086 -2-
