AS/NZS 1826:2008
Electrical equipment for explosive gas atmospheres - Special protection - Type of protection 's'
Allows the design, assessment and testing of equipment or parts of equipment that cannot be classified within a recognized technique or combination of recognized techniques because of functional or operational limitations.
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AS/NZS 1826:2008 ELECTRICAL EQUIPMENT FOR EXPLOSIVE GAS ATMOSPHERES-SPECIAL PROTECTION-TYPE OF PROTECTION ‚S™
PREFACE
CONTENTS
1 SCOPE
2 REFERENCED DOCUMENTS
3 DEFINITIONS
3.1 Fault
3.2 Failure
3.3 Hermetically sealed device
3.4 Independent verifier
3.5 Sealed device
3.6 Special protection (type of protection ‘s’)
4 GENERAL
4.1 Equipment group and temperature classification
4.2 Level of protection-Equipment protection level (EPL)
4.3 Manufacturer's specification
4.4 Verification
5 APPLICATION OF AS/NZS 60079.0 REQUIREMENTS
5.1 General
5.2 Proposed alternate requirement
5.3 Specification of alternate requirement
5.4 Assessment and/or test to alternate requirements
5.5 Reporting results of alternate requirements
6 SAFETY REQUIREMENTS RELATING TO THE DESIGN AND CONSTRUCTION OF EQUIPMENT AND PROTECTIVE SYSTEMS
6.1 Principles of integrated explosion safety
6.2 Installation and maintenance conditions
6.3 Surrounding area conditions
6.4 Selection of materials
6.5 Design and construction
6.5.1 General
6.5.2 Enclosed structures and prevention of leaks
6.5.3 Dust deposits
6.5.4 Additional means of protection
6.5.5 Safe opening
6.5.6 Protection against other hazards
6.5.7 Protective devices
6.6 Potential ignition sources
6.6.1 Hazards arising from different ignition sources
6.6.2 Hazards arising from static electricity
6.6.3 Hazards arising from stray electric and leakage currents
6.6.4 Hazards arising from mechanical heating
6.6.5 Hazards arising from pressure change
6.7 Hazards arising from external effects
7 SUPPLEMENTARY REQUIREMENTS IN RESPECT OF EQUIPMENT
7.1 Requirements applicable to equipment with EPL ‘Ma’
7.2 Requirements applicable to EPL ‘Mb’
7.3 Requirements applicable to EPL ‘Ga’
7.4 Requirements applicable to EPL ‘Da’
7.5 Requirements for applicable EPL ‘Gb’
7.6 Requirements applicable to EPL ‘Db’
7.7 Requirements applicable to EPL ‘Gc’
7.8 Requirements applicable to EPL ‘Dc’
8 FAULT ASSESSMENT
8.1 General
8.2 Application of faults
9 SPECIAL PROTECTION TECHNIQUES
9.1 Hermetically sealed devices
9.1.1 General
9.1.2 Constructional requirements
9.2 Sealed devices
9.2.1 General
9.2.2 Constructional requirements
9.3 Specially constructed low volume devices intended as EPL ‘Ma’ or ‘Ga’
9.4 High voltage low current circuits
9.5 Other innovative means of ensuring safety
10 CONNECTION OF CONDUCTORS AND CABLES
11 ASSESSMENT AND TESTS
11.1 General
11.2 Tests for equipment employing containment and/or energy limitation
11.2.1 Equipment employing containment
11.2.2 Equipment employing energy limitation
11.3 Temperature classification test
12 DOCUMENTATION
13 MARKING
13.1 Alternative marking 1
13.2 Alternative marking 2
14 INSTRUCTIONS
APPENDIX A - IGNITION HAZARD ASSESSMENT
APPENDIX B - SINTERED HEAD TESTING
B1 INTRODUCTION
B2 FLAME TRANSMISSION TEST
B2.1 Sintered element (see Figure B1)
B2.2 Complete cells (see Figure B3)
APPENDIX C - BIBLIOGRAPHY
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Related Information
Electricity (Safety) Regulations 2010
Ministry: WorkSafe New Zealand: Energy Safety
Section: Schedule 8, Clause 37
Citation context:37 Requirements for mining electrical equipment used or installed in ERZ0 or ERZ1 (4) In this clause, special protection “s” means special protection “s” for Group I as defined in AS/NZS 1826 or IEC 60079-33.
Electricity (Safety) Regulations 2010
Ministry: WorkSafe New Zealand: Energy Safety
Section: Schedule 2
Citation context:AS/NZS 1826 means AS/NZS 1826:2008
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AS/NZS 1826:2008 ELECTRICAL EQUIPMENT FOR EXPLOSIVE GAS ATMOSPHERES-SPECIAL PROTECTION-TYPE OF PROTECTION ‚S™
PREFACE
CONTENTS
1 SCOPE
2 REFERENCED DOCUMENTS
3 DEFINITIONS
3.1 Fault
3.2 Failure
3.3 Hermetically sealed device
3.4 Independent verifier
3.5 Sealed device
3.6 Special protection (type of protection ‘s’)
4 GENERAL
4.1 Equipment group and temperature classification
4.2 Level of protection-Equipment protection level (EPL)
4.3 Manufacturer's specification
4.4 Verification
5 APPLICATION OF AS/NZS 60079.0 REQUIREMENTS
5.1 General
5.2 Proposed alternate requirement
5.3 Specification of alternate requirement
5.4 Assessment and/or test to alternate requirements
5.5 Reporting results of alternate requirements
6 SAFETY REQUIREMENTS RELATING TO THE DESIGN AND CONSTRUCTION OF EQUIPMENT AND PROTECTIVE SYSTEMS
6.1 Principles of integrated explosion safety
6.2 Installation and maintenance conditions
6.3 Surrounding area conditions
6.4 Selection of materials
6.5 Design and construction
6.5.1 General
6.5.2 Enclosed structures and prevention of leaks
6.5.3 Dust deposits
6.5.4 Additional means of protection
6.5.5 Safe opening
6.5.6 Protection against other hazards
6.5.7 Protective devices
6.6 Potential ignition sources
6.6.1 Hazards arising from different ignition sources
6.6.2 Hazards arising from static electricity
6.6.3 Hazards arising from stray electric and leakage currents
6.6.4 Hazards arising from mechanical heating
6.6.5 Hazards arising from pressure change
6.7 Hazards arising from external effects
7 SUPPLEMENTARY REQUIREMENTS IN RESPECT OF EQUIPMENT
7.1 Requirements applicable to equipment with EPL ‘Ma’
7.2 Requirements applicable to EPL ‘Mb’
7.3 Requirements applicable to EPL ‘Ga’
7.4 Requirements applicable to EPL ‘Da’
7.5 Requirements for applicable EPL ‘Gb’
7.6 Requirements applicable to EPL ‘Db’
7.7 Requirements applicable to EPL ‘Gc’
7.8 Requirements applicable to EPL ‘Dc’
8 FAULT ASSESSMENT
8.1 General
8.2 Application of faults
9 SPECIAL PROTECTION TECHNIQUES
9.1 Hermetically sealed devices
9.1.1 General
9.1.2 Constructional requirements
9.2 Sealed devices
9.2.1 General
9.2.2 Constructional requirements
9.3 Specially constructed low volume devices intended as EPL ‘Ma’ or ‘Ga’
9.4 High voltage low current circuits
9.5 Other innovative means of ensuring safety
10 CONNECTION OF CONDUCTORS AND CABLES
11 ASSESSMENT AND TESTS
11.1 General
11.2 Tests for equipment employing containment and/or energy limitation
11.2.1 Equipment employing containment
11.2.2 Equipment employing energy limitation
11.3 Temperature classification test
12 DOCUMENTATION
13 MARKING
13.1 Alternative marking 1
13.2 Alternative marking 2
14 INSTRUCTIONS
APPENDIX A - IGNITION HAZARD ASSESSMENT
APPENDIX B - SINTERED HEAD TESTING
B1 INTRODUCTION
B2 FLAME TRANSMISSION TEST
B2.1 Sintered element (see Figure B1)
B2.2 Complete cells (see Figure B3)
APPENDIX C - BIBLIOGRAPHY
Previous versions
AS/NZS 1826:2008
Online Library subscription information
Online library subscriptions provide a cost-effective solution for organisations of any size to access the latest standards, offering 24/7 access to a personalised catalogue. The service ensures subscribers have have the most up-to-date version of selected standards, incluing automatic updates for any amendments or versions. Pricing is dependent on the chosen standards and the number of concurrent users, with discounts applied from the standards PDF price. For customised subscriptions or further inquiries, contact the Online Library team.