1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUNDERWRITERS LABORATORIES INC. CERTIFICATION REQUIREMENT DECISIONThis Certification Requirement Decision is prepared by UL LLC. It is normative for the applicable ULProduct Certification Program(
2、s); however, it is currently not part of the UL Standard(s) referencedbelow.Product Category (CCN): JZGZ/2Standard Number: UL 1004-1Standard Title: Standard for Rotating Electrical MachinesEdition Date: September 19, 2012Edition Number: 2Section / Paragraph Reference: Revised 44.1(f)Subject: Alterna
3、tive output marking for generatorsDECISION:44.1 A machine shall be marked to indicate:a) Manufacturers name or identification;b) Machine catalog or model number;c) Rated voltage;d) Full-load amperes, watts or kilowatts, or both;e) Rated speed;f) Rated horsepower or output wattage if over 93 W (1/8 h
4、p);Exception No. 1: A fractional horsepower air-over motor is not required to be marked to indicate outputhorsepower or wattage.Exception No. 2: With respect to (f), generators may be alternatively marked with kVA when additionallymarked with the intended Power Factor (PF) rating of the machine.RATI
5、ONALE FOR DECISION:Output of generators are typically provided either the apparent power expressed as kVA along with theintended power factor (PF) or with the real power expressed as kW. Since kVA times the PF equals thereal power output, including both the kVA and PF allows users to readily calcula
6、te the output.This alternative marking represents common industry practice for marking electrical generators, andreflects present practice in the application of these requirements.Copyright 2018 UL LLCUL LLC, in performing its functions in accordance with its objectives, does not guarantee or warran
7、t thecorrectness of Certification Requirement Decisions it may issue or that they will be recognized or adoptedby anyone. Certification Requirement Decisions are the opinion of UL LLC. in practically applying therequirements of the standard. They do not represent formal interpretations of the standa
8、rd underAmerican National Standards Institute (ANSI) processes. UL LLC shall not be responsible to anyone forthe use of or reliance upon Certification Requirement Decisions by anyone. UL LLC shall not incur anyUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PER
9、MISSION FROM ULobligation or liability for damages, including consequential damages, arising out of or in connection withthe use or reliance upon Certification Requirement Decisions. The electronic version of the CertificationRequirement 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 1004-1 -2-
