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A selection of British Standard Numbers with brief details @ 02 April 2001 . . . . . . . . . . . . . . . . . . . . . . .
BS 5501-1:1977 EN 50014:1977	Electrical apparatus for potentially explosive atmospheres. General requirements
BS 5501-1:1977 EN 50014:1977	Electrical apparatus for potentially explosive atmospheres. General requirements
BS 5501-2:1977 EN 50015:1977	Electrical apparatus for potentially explosive atmospheres. Oil immersion 'o'
BS 5501-2:1977 EN 50015:1977	Electrical apparatus for potentially explosive atmospheres. Oil immersion 'o'
BS 5501-4:1977 EN 50017:1977	Electrical apparatus for potentially explosive atmospheres. Powder filling 'q'
BS 5501-4:1977 EN 50017:1977	Electrical apparatus for potentially explosive atmospheres. Powder filling 'q'
BS 5501-5:1977 EN 50018:1977	Electrical apparatus for potentially explosive atmospheres. Flameproof enclosure 'd'
BS 5501-5:1977 EN 50018:1977	Electrical apparatus for potentially explosive atmospheres. Flameproof enclosure 'd'
BS 5501-6:1977 EN 50019:1977	Electrical apparatus for potentially explosive atmospheres. Increased safety 'e'
BS 5501-6:1977 EN 50019:1977	Electrical apparatus for potentially explosive atmospheres. Increased safety 'e'
BS 5501-7:1977 EN 50020:1977	Electrical apparatus for potentially explosive atmospheres. Intrinsic safety 'i'
BS 5501-7:1977 EN 50020:1977	Electrical apparatus for potentially explosive atmospheres. Intrinsic safety 'i'
BS 5501-8:1988 EN 50028:1987	Electrical apparatus for potentially explosive atmospheres. Electrical apparatus for potentially explosive atmospheres. Encapsulation 'm'
BS 5501-8:1988 EN 50028:1987	Electrical apparatus for potentially explosive atmospheres. Electrical apparatus for potentially explosive atmospheres. Encapsulation 'm'
BS 5501-9:1982 EN 50039:1980	Electrical apparatus for potentially explosive atmospheres. Specification for intrinsically safe electrical systems 'i'
BS 5518:1977	Specification for electronic variable control switches (dimmer switches) for tungsten filament lighting
BS 5529:1988 EN 50008:1987	Specification for low-voltage switchgear and controlgear for industrial use. Inductive proximity switches. Form A, for direct current, 3 or 4 terminals
BS 5550-7.1.1:1980	Cinematography. Production and presentation. Light sources and lighting. Specification for exciter lamps
BS 5550-7.5.3:1981	Cinematography. Production and presentation. Film and television location lighting. Specification for plugs and socket connectors
BS 5550-7.5.4:1981	Cinematography. Production and presentation. Film and television location lighting. Specification for single pole high current plugs and socket connectors
BS 5564:1978	Specification for high-voltage fuses for the external protection of shunt power capacitors
BS 5581:1978 EN 50013:1977	Specification for low voltage switchgear and controlgear for industrial use. Terminal marking and distinctive number for particular control switches
BS 5582:1978 EN 50012:1977	Specification for low voltage switchgear and controlgear for industrial use. Terminal marking and distinctive number for auxiliary contacts of particular contactors
BS 5583:1978 EN 50011:1977	Specification for low voltage switchgear and controlgear for industrial use. Terminal marking, distinctive number and distinctive letter for particular contactor relays
BS 5584:1978 EN 50022	Specification for low voltage switchgear and controlgear for industrial use. Mounting rails. Top hat rails 35 mm wide for snap-on mounting of equipment
BS 5585:1978 EN 50023	Specification for low voltage switchgear and controlgear for industrial use. Mounting rails. Top hat rails 75 mm wide for snap-on mounting of equipment
BS 5611:1978 IEC 60542:1976	Application guide for on-load tap-changers
BS 5620:1995	Specification for 200 A 1100 V flameproof restrained and bolted plugs and sockets for use in coal mines
BS 5630:1978	Specification for interface dimensions of snap-on connections for use with electrically controlled hydraulic equipment
BS 5654-1:1979 , IEC 60478-1:1974	Stabilized power supplies, d.c. output. Terms and definitions
BS 5654-2:1979 IEC 60478-2:1975	Stabilized power supplies, d.c. output. Method of specifying rating and performance
BS 5654-4:1979 IEC 60478-4:1976	Stabilized power supplies, d.c. output. Tests other than radio-frequency interference
BS 5683:1988 EN 50025:1987	Specification for low-voltage switchgear and controlgear for industrial use. Inductive proximity switches. Form C, for direct current, 3 or 4 terminals
BS 5684:1988 EN 50026:1987	Specification for low-voltage switchgear and controlgear for industrial use. Inductive proximity switches. Form D, for direct current, 3 or 4 terminals

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