UL 763 CRD-2013 UL Standard for Safety Motor-Operated Commercial Food Preparing Machines - Section Paragraph Reference 35 36 Subject Leakage Current Limit for Stationary Ice Bever.pdf

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): IPSTStandard Number: UL 763Standard Title: Standard for Motor-Operated Commercial Food Preparing MachinesEdition Date: January 31, 2012Edition Number: 4Secti

3、on / Paragraph Reference: 35, 36Subject: Leakage Current Limit for Stationary Ice/Beverage Dispensers with EMISuppression FilteringDECISION:35.1 When tested in accordance with 35.3 - 35.8, the leakage current of a cord- and plug-connected icedispenser or counter-top, portable machine weighing 40 lbs

4、 or less, rated for a nominal 120- or 240-voltsingle-phase supply shall not exceed 0.5 mA.Exception: Those conductive parts of a stationary ice dispenser that comply with all of the specificationsin Items (a) through (d) below shall have a leakage current from simultaneously accessible parts to theg

5、rounded supply conductor no greater than 3.5 mA. The leakage current between simultaneouslyaccessible parts shall not exceed 0.5 mA.a) The product is provided with electromagnetic interference (EMI) suppression filtering.b) The product is equipped with a grounding-type supply cord and plug.c) The pr

6、oduct is not intended for outdoor installation.d) There is a low probability that high leakage conductive parts will be contacted during normaluse.1) The front of an ice dispenser is considered likely to be contacted in normal use.However, the recessed area where ice or beverages are dispensed (back

7、splashsurround) is considered to have a low probability of contact during normal use.2) The sides of an ice dispenser are considered likely to be contacted in normal use,unless installation instructions are provided for installing in a manner that the sides areprotected from unintentional contact, s

8、uch as in a recessed area.3) The cover of a manually-filled ice hopper is considered likely to be contacted innormal use when refilling the ice hopper.RATIONALE FOR DECISION:The Standard for Leakage Current for Appliances, UL 101, allows higher leakage current limits forproducts employing electromag

9、net interference filters for compliance with various EMC requirements andregulations. Electronically commutated motors (ECM) and appliances incorporating informationtechnology equipment (ITE) components are examples of such products.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORD

10、ISTRIBUTION WITHOUT PERMISSION FROM ULTherefore, leakage current limit for stationary, cord connected ice dispensers has been increased to 3.5mA when it is provided with a grounding attachment plug and there is a low probability that high leakagecurrent conductive parts will be contacted during norm

11、al use. The back and bottom of an ice dispenserare considered to have a low probability of contact during normal use. The front of an ice dispenser isconsidered likely to be contacted during normal use. However, a recessed area around the ice andbeverage dispensing actuator(s) (backsplash surround)

12、is considered to have a low probability of contactduring normal use. The sides of an ice dispenser are considered likely to be contacted during normal use,unless the installation instructions are provided for installing in a manner such that the sides are protectedfrom unintentional contact. The cov

13、er of a manually-filled ice hopper is considered likely to be contactedin normal use when refilling the ice hopper.Copyright 2013 Underwriters Laboratories Inc.UL, in performing its functions in accordance with its objectives, does not guarantee or warrant thecorrectness of Certification Requirement

14、 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 American Natio

15、nal 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 763 -2-