UL 121201:9ED 2017-09-15
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
Hardcopy
English
15-09-2017
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
| DevelopmentNote |
Also numbered as CSA C22.2.213. (10/2017)
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| DocumentType |
Standard
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| Pages |
0
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| 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
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| Status |
Current
|
Includes products which shall comply with the referenced installation codes and standards noted in Annex A.
| UL 50:13ED 2015-10-16 | Enclosures for Electrical Equipment, Non-Environmental Considerations |
| UL 60079-6:4ED 2016-04-29 | Explosive atmospheres - Part 6: Equipment protection by liquid immersion |
| 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 |
| UL 60079-1:7ED 2015-09-18 | 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 |
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