UL 2225 CRD-2015 UL Standard for Safety Cables and Cable-Fittings For Use In Hazardous (Classified) Locations - Section Paragraph Reference Section 37 Subject Div 2 Marking (Editi.pdf
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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): AAIZStandard Number: UL 2225Standard Title: Standard for Cables and Cable-Fittings For Use In Hazardous(Classified) LocationsEdition Date: September 30, 2013
3、Edition Number: 4Section / Paragraph Reference: Section 37Subject: Div. 2 MarkingDECISION:MARKINGS37 Details37.1 Cable sealing fitting shall be marked with the following:a) The manufacturers or private labelers name, trademark, or other descriptive marking bywhich the organization responsible for th
4、e product may be identified.b) A descriptive catalog or designation number to specifically identify the product.c) Thread size.d) Designation of the hazardous location in which the product is intended to be used. For thespecific marking for Class I, II, and III, Division 1 and 2, see 37.2; for AEx m
5、arking for explosivegas atmospheres, see 37.3 or for AEx marking for explosive dust atmospheres, see 37.4. TheAEx marking for explosive gas atmospheres and explosive dust atmospheres shall be separateand not combined.37.2 Marking for Class I, II, and III, Division 1 and 2 shall be marked with the fo
6、llowing:a) Class, Group and Division, as appropriate. For Division 1 or Division 2, designation of thehazardous location Group need not be marked on a fitting if the size or design of the fitting issuch that there is insufficient space for this marking, and:1) The designations of both the hazardous
7、location class and group appear on thesmallest package in which the fitting is shipped; and2) The fitting is suitable for all hazardous location groups in the Division 1 or Division 2hazardous location class marked on the fitting.37.3 AEx marking for explosive gas atmospheres shall be marked with th
8、e following:a) Class I;b) The applicable Zone marking - i.e. Zone 0, Zone 1, or Zone 2;UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULc) The symbol AEx;d) The symbol for each type of protection used:1) d: flameproof;2) e: increased safety;e)
9、The symbol of the group:1) IIA, IIB or IIC for electrical equipment for places with an explosive gas atmosphereother than mines susceptible to firedamp.2) When the electrical equipment is for use only in a particular gas, the chemicalformula or the name of the gas in parentheses.3) When the electric
10、al equipment is for use in a particular gas in addition to beingsuitable for use in a specific group of electrical equipment, the chemical formula shallfollow the group and be separated with the symbol +, for example, IIB+H2.The markings a) to e) shall be placed in the order in which they are given
11、and shall each be separatedby a small space.To avoid the risk of explosion due to confusion with explosionproof cord and cable fittings marked “ClassI, Division 2” per 37.3, cord or cable fittings complying only with the requirements for flameproof “d” orincreased safety “e” cable fittings shall not
12、 be additionally marked “Class I, Division 2”.Note: In accordance with NEC Article 501, cable sealing fittings marked “d” or “e” are permitted to be usedfor the connection of general purpose assemblies acceptable for Class I, Division 2 locations.37.4 AEx marking for explosive dust atmospheres are m
13、arked with the following:a) The applicable Zone marking - i.e. Zone 20, Zone 21, or Zone 22;b) The symbol AEx;c) The symbol for each type of protection used:1) ta, tb, tc,ortD: dust ignition protection by enclosure.To avoid the risk of explosion due to confusion with explosionproof cord and cable fi
14、ttings marked “ClassI, Division 2” per 37.3, cord or cable fittings complying only with the requirements for protection byenclosure “ta”,“tb”, “tc” or “tD” cable fittings shall not be additionally marked Class I, Division 2 or Class II,Division 2.Note: Where acceptable per NEC Section 502.6, cable f
15、ittings for Zone 21 or Zone 22 locations arepermitted to be installed in Class II, Division 2 locations.37.5 In addition to, or as an alternative to, the marking in 37.2(a), cable sealing fittings that have beeninvestigated and found to comply with the requirements for Class I, Group D locations may
16、 additionally oralternatively be marked Class I, Zone 1, Group IIA.STANDARD NUMBER: UL 2225 -2-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL37.6 In addition to, or as an alternative to, the marking in 37.2(a), cable sealing fittings that ha
17、ve beeninvestigated and found to comply with the requirements for Class I, Group C locations may additionally oralternatively be marked Class I, Zone 1, Group IIB.37.7 In addition to, or as an alternative to, the marking in 37.2(a), cable sealing fittings that have beeninvestigated and found to comp
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