This part of GB 3836 specifies the requirements for the design, construction, testing and marking of electrical apparatus with type of protection increased safety "e" intended for use in explosive gas atmospheres. This standard applies to electrical apparatus where the rated voltage does not exceed 11 kV r.m.s. a.c. or d.c. Additional measures are applied to ensure that the apparatus does not produce arcs, sparks, or excessive temperatures in normal operation or under specified abnormal conditions.
This standard supplements and modifies the general requirements of GB 3836.1-2010. Where a requirement of this standard conflicts with a requirement of GB 3836.1-2010, the requirement of this standard takes precedence.
NOTE: Increased safety "e" can provide Equipment Protection Levels (EPL) Mb or Gb. For further information, see Annex I.
2 Normative Reference
The following normative documents contain provision which, through reference in this part of GB 3836, constitute provisions of this national standard. For dated reference, subsequent amendments to, or revisions of, any of these publications do not apply. But the parties to agreements based on this standard are encouraged to investigate the possibility of applying the latest editions of the standards indicated below. For undated references, the latest edition of the normative document referred to applies.
GB 755-2008 “Rotating Electrical Machines - Rating and Performance” (IEC 60034-1:2004, IDT)
GB 1312-2007 “Lampholders for Tubular Fluorescent Lamps and Starter Holders” (IEC 60400:2004, IDT)
GB/T 1406.1-2008 “Types and Dimensions of Lamp Caps - Part 1: Screw Caps” (IEC 60061-1:2005, MOD)
GB/T 2423.5-1995 “Environmental Testing for Electric and Electronic Products - Part 2: Test Methods - Test Ea and Guidance: Shock” (IDT, IEC 68-2-27:1987)
GB/T 2423.10-2008 “Environmental Testing for Electric and Electronic Products - Part 2: Tests Methods - Test Fc: Vibration (Sinusoidal)” (IEC 60068-2-6:1995, IDT)
GB/T 2828.1-2003 “Sampling Procedures for Inspection by Attributea - Part1: Sampling Schemes Indexed by Acceptance Quality Limit (AQL) for Lot-by-lot Inspection” (ISO 2859-1:1999, IDT)
GB/T 2900.35-2008 “Electrotechnical Terminology - Equipment for Explosive Atmospheres” (IEC 60050(426):2008, IDT)
GB 3836.1-2010 “Explosive Atmospheres - Part 1: Equipment - General Requirements” (IEC 60079-0:2007, MOD)
GB 3836.2-2010 “Explosive Atmospheres - Part 2: Equipment Protection by Flameproof Enclosures‘d’” (IEC 60079-1:2007, MOD)
GB 3836.4-2010 “Explosive Atmospheres - Part 4: Equipment Protection by Intrinsic Safety ‘I’” (IEC 60079-11:2006, MOD)
GB 3836.9-2006 “Electrical Apparatus for Explosive Gas Atmospheres - Part 9: Encapsulation ‘m’” (IEC 60079-18-2004, IDT)
GB 3836.15-2000 “Electrical Apparatus for Explosive Gas Atmospheres - Part 15: Electrical Installations in Hazardous Areas (Other than Mines)” (eqv IEC 60079-14:1996)
GB 3836.16-2006 “Electrical Apparatus for Explosive Gas Atmospheres - Part 16: Inspection and Maintenance of Electrical Installation (Other than Mines)” (IEC 60079-17:2002, IDT)
GB/T 3956-2008 “Conductors of Insulated Cables” (IEC 60228:2004, IDT)
GB/T 4207-2003 “Method for Determining the Comparative and the Proof Tracking Indices of Solid Insulating Materials under Moist Conditions” (IEC 60112:1979, IDT)
GB 4208-2008 “Degrees of Protection Provided By Enclosure (IP Code)” (IEC 60529:2001, IDT)
GB/T 4942.1-2006 “Degrees of Protection Provided by the Integral Design of Rotating Electrical Machines (IP Code) C Classification” (IEC 60034-5:2000, IDT)
GB/T 5332-2007” Method of Test for Ignition Temperature of Flammable Liquids and Gases” (IEC 60079-4:1975, IDT)
GB/T 6109.2-2008 “Enamelled Round Winding Wire - Part 2: Polyester Enamelled Round Copper Wire Class 155” (eqv IEC 60317-3:2004)
GB/T 6109.5-2008 “Enamelled Round Winding Wire - Part 5: Polyesterimide Enamelled Round Copper Wire Class 180” (IEC 60317-8:1997 IDT)
GB/T 6109.6-2008 “Enamelled Round Winding Wire - Part 6: Polyimide Enamelled Round Copper Wire Class 220” (IEC 60317-7:1997, IDT)
GB/T 6109.20-2008 “Enamelled Round Winding Wire - Part 20: Polyester on Polyesterimide Overcoated with Polyamide-imide Enamelled Round Copper Wire Class 200” (IEC 60317-13:1997, IDT)
GB 7251 “Low-voltage Switchgear and Controlgear Assemblies (All Parts)” (IEC 60439, IDT)
GB 7957-2003 “General Requirements for Safety of Cap Lamp” (neq IEC 62013-1:1999)
GB/T 10681-2009 “Tungsten Filament Lamps for Domestic and Similar General Lighting Purposes - Performance Requirements” (IEC 60064:2005 A4:2007, NEQ)
GB/T 11021-2007 “Electrical insulation - Thermal classification” (IEC 60085:2004, IDT)
GB 14048.1-2006 “Low-voltage Switchgear and Controlgear - Part 1: General Rules “(IEC 60947-1:2001, MOD)
GB/T 14048.7-2006 “Low-voltage Switchgear and Controlgear - Part 7-1: Ancillary Equipment - Terminal Blocks for Copper Conductors” (IEC 60947-7-1:2002, IDT)
GB/T 14048.8-2006 “Low-voltage Switchgear and Controlgear - Part 7-2: Ancillary Equipment - Protective Conductor Terminal Blocks for Copper Conductors” (IEC 60947-7-2:2002 MOD)
GB 14196.1-2008 “Incandescent Lamps - Safety Specifications - Part 1: Tungsten Filament Lamps for Domestic and Similar General Lighting Purposes” (IEC 60432-1:2005, IDT)
GB 16847-1997 “Requirements for Protective Current Transformers for Transient Performance” (IDT IEC 60044-6:1992)
GB/T 16855.1-2005 “Safety of Machinery - Safety-related Parts of Control Systems - Part 1: General Principles for Design” (ISO 13849-1:1999, MOD)
GB 16895.20-2003 “Electrical Installations of Buildings Part 5: Selection and Erection of Electrical Equipment Chapter 55: Other Equipment Section 551: Low-voltage Generating Sets” (IEC 60364-5-551:1994, IDT)
GB 16916.1-2003 “Residual Current Operated Circuit-Breakers without Integral Overcurrent Protection for Household and Similar Uses (RCCB)—Part 1: General Rules” (IEC 61008-1-1996, MOD)
GB/T 16935.1-2008 “Insulation Coordination for Equipment within Low-voltage Systems - Part 1: Principles Requirements and Tests” (IEC 60664-1:2007, IDT)
GB 17935-2007 “Edison Screw Lampholders” (IEC 60238:2004, IDT)
GB 17464-1998 “Connecting Devices-safety Requirements for Screw-type and Screwless-type Clamping Units for Electrical Copper Conductors” (IDT IEC 60999:1990)
GB 18774-2002 “Double-capped Fluorescent Lamps-safety Specifications” (IDT IEC 61195:1999)
GB/T 19148.1-2008 “Types and Dimensions of Lampholder - Part 1: Screw Lampholder” (IEC 60061-2:2004, MOD)
GB/T 19148.2-2008 “Types and Dimensions of Lampholders - Part 2: Pin Lampholders” (IEC 60061-2:2004, MOD)
GB 19510.4-2005 “Lamp Controlgear - Part 4: Particular Requirements for A.C. Supplied Electronic Ballasts for Fluorescent Lamps” (IEC 61347-2-3:2000, IDT)
GB 19518.1-2004 “Electrical Apparatus for Explosive Gas Atmospheres - Electrical Resistance Trace Heating - Part 1: General and Testing Requirements” (IEC 62086-1:2001, IDT)
GB/T 20636-2006 “Connecting Device - Electrical Copper Conductors - Safety Requirements for Screw-type and Screwless-type Clamping Units - Particular Requirements for Conductors above 35mm2 up to 300mm2” (IEC 60999-2:2003 ,IDT)
IEC 60068-2-42-1976 “Environmental Testing for Electric and Electronic Products - Tests; Test Kc: Sulphur Dioxide Test for Contacts and Connections”
3 Terms and Definitions
For the purposes of this document, the terms and definitions used in GB 3836.1-2010, together with the following terms and definitions apply.
For the definitions of any other terms, particularly those of a more general nature, reference should be made to GB/T 2900.35-2008 or other appropriate parts of the IEV (International Electrotechnical Vocabulary).
3.1 Clearance
Shortest distance between two conductive parts
3.2 Connections, factory
