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  • BS 4683-2(1971) : 1971

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    SPECIFICATION FOR ELECTRICAL APPARATUS FOR EXPLOSIVE ATMOSPHERES - THE CONSTRUCTION AND TESTING OF FLAMEPROOF ENCLOSURES OF ELECTRICAL APPARATUS

    Available format(s):  Hardcopy, PDF

    Superseded date:  01-11-2003

    Language(s):  English

    Published date:  01-01-1971

    Publisher:  British Standards Institution

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    Table of Contents - (Show below) - (Hide below)

    Co-operating organizations
    Introduction
    Foreword
    Specification
    Section 1. General
    1 Scope
    2 Definitions
    3 Grouping of enclosures
    4 Enclosed apparatus
    5 Joints
    6 Operating rods (spindles)
    7 Shafts and bearings
    8 Inspection windows
    9 Cover glasses for lighting fittings
    10 Breathing and draining devices
    11 Fastenings
    12 Mechanical strength
    13 Connection of external conductors and cables
    14 Marking
    Section 2. Checks and tests
    15 Type checks and tests
    16 Routine checks and tests
    Section 3. Special requirements for group IIC
                enclosures
    17 Compliance with Section 1
    18 Volume
    19 Joints
    20 Operating rods, shafts and bearings
    21 Tests
    Appendices
    A Cements and sealing materials
    B Alignment with IEC Publication 79-1
    Tables
    1 Groups I, IIA and IIB enclosures
    2 Group IIC enclosures
    3 To show the group of enclosure suitable for a
         particular flammable gas or vapour
    Figures
    1-9 Typical joints
    10 Example of the use of a dowel pin to permit
         indirect observation of the closeness of fit of a
         joint
    11 Typical plain fixed gland
    12 Typical labyrinth gland
    13 Typical plain floating gland
    14 Sleeve bearings where a < g
    15 Sleeve bearings where a > g
    16 Typical window mountings
    17 Typical means of shrouding nuts, bolts, screws,
         etc. used for securing covers
    18 Indirect entry of cable (Type X)
    19 Direct entry of cable (Type Y)
    20 Definition of pressure rise time
    21 Illustration of requirements of 15.3.2
    22 Spigot joint in Group IIC enclosure
    23 Threaded joint in Group IIC enclosure

    Abstract - (Show below) - (Hide below)

    Describes the constructional features for flameproof enclosures of electrical apparatus to ensure safety in service. Such enclosures are suitable for housing electrical apparatus in atmospheres where a mixture of air and flammable gas or vapour may occur. Apply to metallic, non-metallic and composite enclosures. Includes definitions, grouping of enclosures, enclosed apparatus, joints, operating rods, shafts and bearings, inspection windows, cover gases for lighting fittings, breathing and graining devices, fastenings, mechanical strength, connection of external conductors and cables, marking, type and routine checks and tests, compliance with Section 1, cements and sealing materials and alignment with IEC Publication 79-1.

    General Product Information - (Show below) - (Hide below)

    Committee GEL/114
    Development Note REPLACES BS 229: 1957, WHICH REMAINS CURRENT TO MAINTAIN THE VALIDITY OF EXISTING CERTIFICATES AND TO GRANT SUPPLEMENTARY CERTIFICATES.
    Document Type Standard
    Publisher British Standards Institution
    Status Superseded
    Superseded By

    Standards Referenced By This Book - (Show below) - (Hide below)

    EEMUA 186 : 2016 A PRACTITIONER'S HANDBOOK FOR POTENTIALLY EXPLOSIVE ATMOSPHERES
    BS 3905:1984 (published 1984-05) Specification for 3.8/6.6 kV, 300 A bolted flameproof cable couplers and adaptors, primarily for use in mines
    BS 542:1973 (published 1973-03) Specification for cable glands and sealing boxes for association with apparatus for use at mines and quarries
    BS 5126-4:1982 (published 1982-11) Mining type flameproof supply and control units for use on systems up to 1100 V Specification for units to power drilling machines
    BS 7924:1999 (published 1999-11) Code of practice for the repair and overhaul of certified electrical apparatus intended for use in mines susceptible to firedamp
    BS 6709:1986 (published 1986-07) Specification for interconnection of electrical apparatus, constructed to two or more British Standards, for use in mines susceptible to firedamp
    BS 6351-3(1983) : 1983 ELECTRIC SURFACE HEATING - CODE OF PRACTICE FOR THE INSTALLATION, TESTING AND MAINTENANCE OF ELECTRIC SURFACE HEATING SYSTEMS
    I.S. 3216-2:1989 CODE OF PRACTICE FOR THE BULK STORAGE OF LIQUEFIED PETROLEUM GAS
    BS 5126-2:1976 (published 1976-11) Specification for mining type flameproof supply and control units for use on systems up to 1100 V 300 A circuit breaker units
    BS 7361-1(1991) : 1991 CATHODIC PROTECTION - PART 1: CODE OF PRACTICE FOR LAND AND MARINE APPLICATIONS
    BS 6351-1(1983) : 1983 ELECTRIC SURFACE HEATING - SPECIFICATION FOR ELECTRIC SURFACE HEATING DEVICES
    BS 5126-1:1974 (published 1974-08) Specification for mining type flameproof supply and control units for use on systems up to 1100 V 160/250 A direct-on-line motor starters (for use on three-phase a.c. circuits)
    BS 6556-2:1985 (published 1985-01) Low speed digital signals for use in coal mines Specification for transformer coupling
    BS 6134:1991 Specification for pressure and vacuum switches
    BS 2G202(1988) : 1988 SPECIFICATION FOR DESIGN AND PERFORMANCE REQUIREMENTS FOR AIRFRAME-FIT ELECTRICAL CONNECTORS FOR D.C. AND LOW FREQUENCY A.C. APPLICATIONS
    BS 5620(1979) : 1979 SPECIFICATION FOR 200 A FLAMEPROOF RESTRAINED AND BOLTED PLUGS AND SOCKETS FOR VOLTAGES NOT EXCEEDING 1100 V PRIMARILY FOR USE IN MINING
    BS 7575(1992) : 1992 SPECIFICATION FOR RESISTANCE THERMOMETERS AND THERMOCOUPLES FOR THE MEASUREMENT OF TEMPERATURE IN TANKS CONTAINING REFRIGERATED LIGHT HYDROCARBON FLUIDS
    BS 5482-3(1979) : 1979 CODE OF PRACTICE FOR DOMESTIC BUTANE AND PROPANE GAS BURNING INSTALLATION - INSTALLATIONS IN BOATS YACHTS AND OTHER VESSELS
    BS 5724-1(1979) : 1979 MEDICAL ELECTRICAL EQUIPMENT - SPECIFICATION FOR GENERAL SAFETY REQUIREMENTS
    BS 5000-17:1981 (published 1981-12) Rotating electrical machines of particular types or for particular applications Machines with flameproof enclosure
    BS 3454:1984 (published 1984-05) Specification for 1.9/3.3 kV, 300 A bolted flameproof cable couplers and adaptors (including 380/660 V and 640/1100 V, 300 A adaptors), primarily for use in mines
    BS 5126-3:1982 (published 1982-05) Mining type flameproof supply and control units for use on systems up to 1100 V Specification for air-cooled single phase lighting transformer units
    BS 4161-7(1973) : 1973 SPECIFICATION FOR GAS METERS - MECHANICAL VOLUME CORRECTORS
    BS 5502-25(1991) : 1991 BUILDINGS AND STRUCTURES FOR AGRICULTURE - PART 25: CODE OF PRACTICE FOR DESIGN AND INSTALLATION OF SERVICES AND FACILITIES
    BS 6020-1(1981) : 1981 INSTRUMENTS FOR THE DETECTION OF COMBUSTIBLE GASES - SPECIFICATION FOR GENERAL REQUIREMENTS AND TEST METHODS
    BS 5908(1980) : LATEST CODE OF PRACTICE FOR FIRE PRECAUTIONS IN CHEMICAL PLANT
    BS 7117-1(1989) : 1989 METERING PUMPS AND DISPENSERS TO BE INSTALLED AT FILLING STATIONS AND USED TO DISPENSE LIQUID FUEL - SPECIFICATION FOR CONSTRUCTION
    BS 5125:1974 (published 1981-01) Specification for 50 A flameproof restrained and bolted plugs and sockets for voltages not exceeding 650 V, primarily for use in mining
    BS 7019:1989 (published 1989-08) Specification for fully screened 400 A bolted flameproof cable couplers and adaptors for use on systems up to and including 6.6 kV, primarily for use in mines
    BS 7701(1993) : 1993 SPECIFICATION FOR FLOAT-TYPE LEVEL GAUGES FOR MEASURING LIQUID LEVELS IN TANKS CONTAINING REFRIGERATED LIGHT-HYDROCARBON FLUIDS
    BS 5067:1985 (published 1985-07) Specification for flameproof transformers for use in mines
    BS 5126-1:1993 (published 1993-12) Mining type flameproof supply and control units for use on systems up to 1100 V Specification for direct-on-line motor starters
    BS 3905:1995 (published 1995-11) Specification for 3.8/6.6 kV, 300 A bolted flameproof cable couplers and adaptors, for use in coal mines.
    EI MODEL CODE SAFE PRACTICE PT1 : 2010 THE SELECTION, INSTALLATION, INSPECTION, AND MAINTENANCE OF ELECTRICAL AND NON ELECTRICAL APPARATUS IN HAZARDOUS AREAS
    BS 5125:1990 (published 1990-07) Specification for 50 A 650 V flameproof, restrained and bolted plugs and sockets for use in coal mines
    BS 5126-4:1993 (published 1993-12) Mining type flameproof supply and control units for use on systems up to 1100 V Specification for air-cooled transformers to power drilling machines
    BS 5126-2:1993 (published 1993-12) Mining type flameproof supply and control units for use on systems up to 1100 V Specification for circuit breaker units
    BS 5126-3:1993 (published 1993-12) Mining type flameproof supply and control units for use on systems up to 1100 V Specification for air-cooled lighting transformer units
    BS 7244:1990 SPECIFICATION FOR FLAME ARRESTERS FOR GENERAL USE
    BS 173(1980) : 1980 METHOD OF SPECIFYING PERFORMANCE OF ROTATING ELECTRICAL MACHINES FOR RAIL AND ROAD VEHICLES
    BS 2455-1:1973 SAMPLING AND EXAMINING DEPOSITS FROM BOILERS AND ASSOCIATED INDUSTRIAL PLANT - WATER SIDE DEPOSITS
    BS 6556-1:1985 (published 1985-01) Low speed digital signals for use in coal mines. Specification for optical coupling
    BS 6739(1986) : 1986 CODE OF PRACTICE FOR INSTRUMENTATION IN PROCESS CONTROL SYSTEMS: INSTALLATION DESIGN AND PRACTICE

    Standards Referencing This Book - (Show below) - (Hide below)

    BS 5501-5(1977) : 1977 ELECTRICAL APPARATUS FOR POTENTIALLY EXPLOSIVE ATMOSPHERES - FLAMEPROOF ENCLOSURE 'D'
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