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UL 121201:9ED 2017-09

Current
Current

The latest, up-to-date edition.

Nonincendive Electrical Equipment for Use in Class I and II, Division 2 and Class III, Divisions 1 and 2 Hazardous (Classified) Locations
Available format(s)

Hardcopy

Language(s)

English

Published date

09-15-2017

Publisher

Underwriters Laboratories

PREFACE
1 Scope
2 Reference publications
3 Definitions
4 General requirements
5 Requirements for Class I, Division 2 equipment
6 Requirements for Class II, Division 2, Class III,
   Divisions 1 and 2 equipment
7 Nonincendive circuits and nonincendive field wiring
8 Normally nonarcing components
9 Marking
10 Surface temperature requirements
11 Spark ignition testing of nonincendive circuits
12 Evaluation of nonincendive components
13 Evaluation of sealed devices
14 Evaluation of enclosed-break devices
15 Enclosure ingress protection for Class II and III
16 Drop tests and impact tests
17 Evaluation of an oil immersed equipment
18 Manufacturer's instructions
Annex A - Normative References (normative)
Annex B - Common Standards - Safety Requirements for
          Electrical Equipment (informative)
Annex C - Suggested Warnings with French Equivalent
          (informative)

This revision to ANSI/UL 121201 dated April 1, 2021 is being issued to include the following changes in requirements: – Revisions to opening of sealed devices; 3.11, 3.34, 13.1.8 – Revisions to Consideration of Normal operating conditions; 3.30, 4.1.1 – Revisions to the application of general industrial / ordinary locations requirements; 4.2.1, 4.4.1, 4.4.2, 5.6.0, Annex B – Revisions to Li ion batteries used in Division 2 portable equipment; 5.2.2, Annex A – Revisions to the sealed device requirements; 13.1.5 – Revisions to the Drop test for portable equipment; 16.2.1 – Revisions to correct reference in Clauses 5.1.2 and 5.3.1

Includes products which shall comply with the referenced installation codes and standards noted in Annex A.

DevelopmentNote
Also numbered as CSA C22.2.213. (10/2017)
DocumentType
Standard
Pages
0
ProductNote
NEW CHILD REV 1 2018 IS NOW ADDED. NEW CHILD REV 2 2019 IS NOW ADDED. New child REV 3 2021 is added
PublisherName
Underwriters Laboratories
Status
Current

CSA C22.2 No. 94.1 : 2015 ENCLOSURES FOR ELECTRICAL EQUIPMENT, NON-ENVIRONMENTAL CONSIDERATIONS
UL 50:13ED 2015-10 Enclosures for Electrical Equipment, Non-Environmental Considerations
UL 60079-6:4ED 2016-04 Explosive atmospheres - Part 6: Equipment protection by liquid immersion
C22.1-15 Canadian Electrical Code, Part I (23rd Edition), Safety Standard for Electrical Installations
CSA C22.2 No. 60079-15 : 2016 EXPLOSIVE ATMOSPHERES - PART 15: EQUIPMENT PROTECTION BY TYPE OF PROTECTION 'N'
CSA C22.2 No. 60079-11 : 2014 EXPLOSIVE ATMOSPHERES - PART 11: EQUIPMENT PROTECTION BY INTRINSIC SAFETY 'I'
CSA C22.2 No. 60079.0 : 2015 EXPLOSIVE ATMOSPHERES - PART 0: EQUIPMENT - GENERAL REQUIREMENTS
IEEE C57.12.00-2015 IEEE Standard for General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers
IEC 60216-2:2005 Electrical insulating materials - Thermal endurance properties - Part 2: Determination of thermal endurance properties of electrical insulating materials - Choice of test criteria
CSA C22.2 No. 60079.1 : 2016 EXPLOSIVE ATMOSPHERES - PART 1: EQUIPMENT PROTECTION BY FLAMEPROOF ENCLOSURES 'D'
IEEE C57.12.90-2010 IEEE Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers
IEC 60529:1989+AMD1:1999+AMD2:2013 CSV Degrees of protection provided by enclosures (IP Code)
NFPA 70 : 2017 NATIONAL ELECTRICAL CODE
IEC 60079-25:2010 Explosive atmospheres - Part 25: Intrinsically safe electrical systems
CAN/CSA-C22.2 NO. 60079-6:17 Explosive atmospheres - Part 6: Equipment protection by liquid immersion \"o\" (Adopted IEC 60079-6:2015, fourth edition, 2015-02, with Canadian deviations)
UL 783:6ED 2003-04 Electric Flashlights and Lanterns for Use in Hazardous (Classified) Locations
UL 60079-1:7ED 2015-09 Standard for Explosive Atmospheres - Part 1: Equipment Protection by Flameproof Enclosures
ISO 178:2010 Plastics Determination of flexural properties
IEC 60216-1:2013 Electrical insulating materials - Thermal endurance properties - Part 1: Ageing procedures and evaluation of test results
UL 60079-0:6ED 2013-07 Explosive Atmospheres - Part 0: Equipment - General Requirements
CSA C22.2 No. 94.2 : 2015 ENCLOSURES FOR ELECTRICAL EQUIPMENT, ENVIRONMENTAL CONSIDERATIONS

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