• IEC 60439-1:1999+AMD1:2004 CSV

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

    Low-voltage switchgear and controlgear assemblies - Part 1: Type-tested and partially type-tested assemblies

    Available format(s):  Hardcopy, PDF, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Superseded date:  22-01-2009

    Language(s):  English - French, English, French

    Published date:  19-04-2004

    Publisher:  International Electrotechnical Committee

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

    FOREWORD
    1 General
      1.1 Scope and object
      1.2 Normative references
    2 Definitions
      2.1 General
      2.2 Constructional units of ASSEMBLIES
      2.3 External design of ASSEMBLIES
      2.4 Structural parts of ASSEMBLIES
      2.5 Conditions of installation of ASSEMBLIES
      2.6 Protective measures with regard to electric shock
      2.7 Gangways within ASSEMBLIES
      2.8 Electronic functions
      2.9 Insulation co-ordination
      2.10 Short-circuit currents
    3 Classification of ASSEMBLIES
    4 Electrical characteristics of ASSEMBLIES
      4.1 Rated voltages
      4.2 Rated current (I[n]) (of a circuit of an ASSEMBLY)
      4.3 Rated short-time withstand current (I[cw]) (of a
           circuit of an ASSEMBLY)
      4.4 Rated peak withstand current (I[pk]) (of a circuit
           of an ASSEMBLY)
      4.5 Rated conditional short-circuit current (I[cc])
           (of a circuit of an ASSEMBLY)
      4.6 Rated fused short-circuit current (I[cf])
           (of a circuit of an ASSEMBLY)
      4.7 Rated diversity factor
      4.8 Rated frequency
    5 Information to be given regarding the ASSEMBLY
      5.1 Nameplates
      5.2 Markings
      5.3 Instructions for installation, operation and
           maintenance
    6 Service conditions
      6.1 Normal service conditions
      6.2 Special service conditions
      6.3 Conditions during transport, storage and erection
    7 Design and construction
      7.1 Mechanical design
      7.2 Enclosure and degree of protection
      7.3 Temperature rise
      7.4 Protection against electric shock
      7.5 Short-circuit protection and short-circuit withstand
           strength
      7.6 Switching devices and components installed in
           ASSEMBLIES
      7.7 Internal separation of ASSEMBLIES by barriers or
           partitions
      7.8 Electrical connections inside an ASSEMBLY bars and
           insulated conductors
      7.9 Requirements for electronic equipment supply
           circuits
      7.10 Electromagnetic compatibility (EMC)
      7.11 Description of the types of electrical connections
           of functional units
    8 Test specifications
      8.1 Classification of tests
      8.2 Type tests
      8.3 Routine tests
    Annex A (normative) Minimum and maximum cross-sections
            of copper conductors suitable for connection
    Annex B (normative) Method of calculating the cross-sectional
            area of protective conductors with regard to
            thermal stresses due to currents of short duration
    Annex C (deleted)
    Annex D (informative) Forms of internal separations
    Annex E (informative) Items subject to agreement between
            manufacturer and user
    Annex F (normative) Measurement of creepage distances and
            clearances
    Annex G (normative) Correlation between the nominal voltage
            of the supply system and the rated impulse withstand
            voltage of the equipment
    Annex H (normative) Electromagnetic compatibility (EMC)
    Bibliography
    Figures
    Tables

    Abstract - (Show below) - (Hide below)

    Applies to low-voltage switchgear and controlgear assemblies (type-tested assemblies (TTA) and partially type-testedassemblies (PTTA)), the rated voltage of which does not exceed 1 000 V a.c. at frequencies not exceeding 1 000 Hz, or 1 500 V d.c.The contents of the corrigendum of November 2004 have been includedin this copy. This consolidated version consists of the fourth edition (1999) and its amendment 1 (2004). Therefore, no need to order amendment inaddition to this publication.

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

    Committee TC 121/SC 121B
    Development Note Also numbered as BS EN 60439-1 (06/2004)
    Document Type Standard
    Publisher International Electrotechnical Committee
    Status Superseded
    Superseded By
    Supersedes

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

    BS ISO 8528-4:2005 RECIPROCATING INTERNAL COMBUSTION ENGINE DRIVEN ALTERNATING CURRENT GENERATING SETS - PART 4: CONTROLGEAR AND SWITCHGEAR
    DIN EN 15882-3:2009-07 EXTENDED APPLICATIONS OF RESULTS FROM FIRE RESISTANCE TESTS FOR SERVICE INSTALLATIONS - PART 3: PENETRATION SEALS
    BS EN 1870-19:2013 Safety of woodworking machines. Circular sawing machines Circular saw benches (with and without sliding table) and building site saws
    08/30178378 DC : 0 BS EN 1218-3:2001/A1 - SAFETY OF WOODWORKING MACHINES - TENONING MACHINES - PART 3: HAND FED TENONING MACHINES WITH SLIDING TABLE FOR CUTTING STRUCTURAL TIMBERS
    BIS IS/ISO 8528-4 : 2005(R2014) RECIPROCATING INTERNAL COMBUSTION ENGINE DRIVEN ALTERNATING CURRENT GENERATING SETS - PART 4: CONTROLGEAR AND SWITCHGEAR
    BIS IS/IEC 60947-4-3 : 1999 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 4: CONTACTORS AND MOTOR-STARTERS - SECTION 3: AC SEMICONDUCTOR CONTROLLERS AND CONTACTORS FOR NON-MOTOR LOADS
    12/30253910 DC : DRAFT JULY 2012 BS EN 1807-2 - SAFETY OF WOODWORKING MACHINES - BAND SAWING MACHINES - LOG SAWING MACHINES
    BS 7767:1994 METHOD FOR ASSESSING THE SHORT-CIRCUIT WITHSTAND STRENGTH OF PARTIALLY TYPE-TESTED ASSEMBLIES (PTTA)
    PREN 1870-3 : DRAFT 2012 SAFETY OF WOODWORKING MACHINES - CIRCULAR SAWING MACHINES - PART 3: DOWN CUTTING CROSS-CUT SAWS AND DUAL PURPOSE DOWN CUTTING CROSS-CUT SAWS/CIRCULAR SAW BENCHES
    BS EN 45510-2-7:2002 GUIDE FOR PROCUREMENT OF POWER STATION EQUIPMENT - PART 2-7: ELECTRICAL EQUIPMENT - SWITCHGEAR AND CONTROLGEAR
    BS EN 61822:2009 ELECTRICAL INSTALLATIONS FOR LIGHTING AND BEACONING OF AERODROMES - CONSTANT CURRENT REGULATORS
    11/30237569 DC : 0 BS EN 1870-19 - SAFETY OF WOODWORKING MACHINES - CIRCULAR SAWING MACHINES - PART 19: CIRCULAR SAW BENCHES (WITH AND WITHOUT SLIDING TABLE) AND BUILDING SITE SAWS
    BS 4752-1(1977) : 1977 SPECIFICATION FOR SWITCHGEAR AND CONTROLGEAR FOR VOLTAGES UP TO AND INCLUDING 1000 V A.C. AND 1200 V D.C. - CIRCUIT BREAKERS
    02/709474 DC : DRAFT JULY 2002 BS EN 1760-3 - SAFETY OF MACHINERY - PRESSURE SENSITIVE PROTECTIVE DEVICES - GENERAL PRINCIPLES FOR THE DESIGN AND TESTING OF PRESSURE SENSITIVE BUMPERS, PLATES, WIRES AND SIMILAR DEVICES
    S.R. HD 60364-4-41:2017 LOW-VOLTAGE ELECTRICAL INSTALLATIONS - PART 4-41: PROTECTION FOR SAFETY - PROTECTION AGAINST ELECTRIC SHOCK
    16/30318928 DC : 0 BS EN ISO 19085-7 - WOODWORKING MACHINES - SAFETY - PART 7: SURFACE PLANING THICKNESS PLANING COMBINED SURFACE/THICKNESS PLANING MACHINES
    09/30197984 DC : 0 BS EN 1807-2 - SAFETY OF WOODWORKING MACHINES - BAND SAWING MACHINES - PART 2: LOG SAWING MACHINES
    BS EN 50490:2008 ELECTRICAL INSTALLATIONS FOR LIGHTING AND BEACONING OF AERODROMES - TECHNICAL REQUIREMENTS FOR AERONAUTICAL GROUND LIGHTING CONTROL AND MONITORING SYSTEMS - UNITS FOR SELECTIVE SWITCHING AND MONITORING OF INDIVIDUAL LAMPS
    03/311404 DC : 0 IEC 61010-1 ED.3 - SAFETY REQUIREMENTS FOR ELECTRICAL EQUIPMENT FOR MEASUREMENT, CONTROL, AND LABORATORY USE - PART 1: GENERAL REQUIREMENTS
    DIN ISO 8528-4:1997-11 RECIPROCATING INTERNAL COMBUSTION ENGINE DRIVEN ALTERNATING CURRENT GENERATING SETS - PART 4: CONTROL AND SWITCHGEAR
    99/240940 DC : 0 BS EN 50331-1 - PHOTOVOLTAIC SYSTEMS IN BUILDINGS - PART 1: SAFETY REQUIREMENTS
    PD CLC/TR 50479:2007 ELECTRICAL INSTALLATION GUIDE - SELECTION AND ERECTION OF ELECTRICAL EQUIPMENT - WIRING SYSTEMS - LIMITATION OF TEMPERATURE RISE OF CONNECTING INTERFACES
    HD 60364-4-41:2017/A11:2017 LOW-VOLTAGE ELECTRICAL INSTALLATIONS - PART 4-41: PROTECTION FOR SAFETY - PROTECTION AGAINST ELECTRIC SHOCK
    CEI EN 50512 : 2014 ELECTRICAL INSTALLATIONS FOR LIGHTING AND BEACONING OF AERODROMES - ADVANCED VISUAL DOCKING GUIDANCE SYSTEMS (A-VDGS)
    DIN EN 1807-1:2013-06 Safety of woodworking machines - Band sawing machines - Part 1: Table band saws and band re-saws
    BS EN 62040-1 : 2008 UNINTERRUPTIBLE POWER SYSTEMS (UPS) - PART 1: GENERAL AND SAFETY REQUIREMENTS FOR UPS
    CENELEC GUIDE 28 : 2006 ACCESSIBILITY IN INTERFACES IN LOW VOLTAGE ELECTRICAL INSTALLATIONS - A GUIDE FOR STANDARD WRITERS
    I.S. EN ISO 18217:2015 SAFETY OF WOODWORKING MACHINES - EDGE-BANDING MACHINES FED BY CHAIN(S) (ISO 18217:2015)
    I.S. EN 62282-5-1:2012 FUEL CELL TECHNOLOGIES - PART 5-1: PORTABLE FUEL CELL POWER SYSTEMS - SAFETY (IEC 62282-5-1:2012 (EQV))
    I.S. EN 1807-2:2013 SAFETY OF WOODWORKING MACHINES - BAND SAWING MACHINES - PART 2: LOG SAWING MACHINES
    PREN 1870-12 : DRAFT 2011 SAFETY OF WOODWORKING MACHINES - CIRCULAR SAWING MACHINES - PART 12: PENDULUM CROSS-CUT SAWING MACHINES
    EN 60204-1 : 2006 COR 2010 SAFETY OF MACHINERY - ELECTRICAL EQUIPMENT OF MACHINES - PART 1: GENERAL REQUIREMENTS
    BS EN 1870-6:2017 SAFETY OF WOODWORKING MACHINES - CIRCULAR SAWING MACHINES - PART 6: CIRCULAR SAWING MACHINES FOR FIRE WOOD
    I.S. EN 61219:1994 LIVE WORKING - EARTHING OR EARTHING AND SHORT-CIRCUITING EQUIPMENT USING LANCES AS A SHORT-CIRCUITING DEVICE - LANCE EARTHING
    CEI EN 60947-7-2 : 2010 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 7-2: ANCILLARY EQUIPMENT - PROTECTIVE CONDUCTOR TERMINAL BLOCKS FOR COPPER CONDUCTORS
    I.S. EN 50512:2009 ELECTRICAL INSTALLATIONS FOR LIGHTING AND BEACONING OF AERODROMES - ADVANCED VISUAL DOCKING GUIDANCE SYSTEMS (A-VDGS)
    CSA C22.2 No. 61010.1 : 2012 : INC : UPD 1 :2015 SAFETY REQUIREMENTS FOR ELECTRICAL EQUIPMENT FOR MEASUREMENT, CONTROL, AND LABORATORY USE - PART 1: GENERAL REQUIREMENTS
    DIN EN 1870-7:2013-01 SAFETY OF WOODWORKING MACHINES - CIRCULAR SAWING MACHINES - PART 7: SINGLE BLADE LOG SAWING MACHINES WITH INTEGRATED FEED TABLE AND MANUAL LOADING AND/OR UNLOADING
    DIN EN 12978:2009-10 INDUSTRIAL, COMMERCIAL AND GARAGE DOORS AND GATES - SAFETY DEVICES FOR POWER OPERATED DOORS AND GATES - REQUIREMENTS AND TEST METHODS
    DIN EN 1870-12:2014-03 Safety of woodworking machines - Circular sawing machines - Part 12: Pendulum cross-cut sawing machines
    DIN EN 1870-16:2013-01 SAFETY OF WOODWORKING MACHINES - CIRCULAR SAWING MACHINES - PART 16: DOUBLE MITRE SAWING MACHINES FOR V CUTTING
    DIN EN 1760-3:2009-07 SAFETY OF MACHINERY - PRESSURE SENSITIVE PROTECTIVE DEVICES - PART 3: GENERAL PRINCIPLES FOR THE DESIGN AND TESTING OF PRESSURE SENSITIVE BUMPERS, PLATES, WIRES AND SIMILAR DEVICES
    DIN EN 1870-3:2015-02 Safety of woodworking machines - Circular sawing machines - Part 3: Down cutting cross-cut saws and dual purpose down cutting cross-cut saws/circular saw benches
    I.S. EN 861:2007 SAFETY OF WOODWORKING MACHINES - SURFACE PLANING AND THICKNESSING MACHINES
    UNE-EN 1870-4:2012 Safety of woodworking machines - Circular sawing machines - Part 4: Multiblade rip sawing machines with manual loading and/or unloading
    UNE-EN 1870-7:2013 Safety of woodworking machines - Circular sawing machines - Part 7: Single blade log sawing machines with integrated feed table and manual loading and/or unloading
    BS EN 859 : 2007 SAFETY OF WOODWORKING MACHINES - HAND FED SURFACE PLANING MACHINES
    BS EN 1870-16:2012 SAFETY OF WOODWORKING MACHINES - CIRCULAR SAWING MACHINES - PART 16: DOUBLE MITRE SAWING MACHINES FOR V CUTTING
    06/30154990 DC : 0 BS EN 60204-32 - SAFETY OF MACHINERY - ELECTRICAL EQUIPMENT OF MACHINES - PART 32: REQUIREMENTS FOR HOISTING MACHINES
    05/30060689 DC : DRAFT JUN 2005 IEC 62282-3-1 - FUEL CELL TECHNOLOGIES - PART 3-1: STATIONARY FUEL CELL POWER PLANTS - SAFETY
    BS EN 1870-15:2012 SAFETY OF WOODWORKING MACHINES - CIRCULAR SAWING MACHINES - PART 15: MULTI-BLADE CROSS-CUT SAWING MACHINES WITH INTEGRATED FEED OF THE WORKPIECE AND MANUAL LOADING AND/OR UNLOADING
    12/30268015 DC : 0 BS EN 62135-1 - RESISTANCE WELDING EQUIPMENT - PART 1: SAFETY REQUIREMENTS FOR DESIGN, MANUFACTURE AND INSTALLATION
    BS EN 1870-10:2013 SAFETY OF WOODWORKING MACHINES - CIRCULAR SAWING MACHINES - PART 10: SINGLE BLADE AUTOMATIC AND SEMI-AUTOMATIC UP-CUTTING CROSS-CUT SAWING MACHINES
    I.S. EN 859:2007 SAFETY OF WOODWORKING MACHINES - HAND FED SURFACE PLANNING MACHINES
    BS EN 62040-1-2:2003
    UNI EN 1218-5 : 2010 SAFETY OF WOODWORKING MACHINES - TENONING MACHINES - PART 5: ONE SIDE PROFILING MACHINES WITH FIXED TABLE AND FEED ROLLERS OR FEED CHAIN
    I.S. EN 1870-16:2012 SAFETY OF WOODWORKING MACHINES - CIRCULAR SAWING MACHINES - PART 16: DOUBLE MITRE SAWING MACHINES FOR V-CUTTING
    EN 12336:2005+A1:2008 TUNNELLING MACHINES - SHIELD MACHINES, THRUST BORING MACHINES, AUGER BORING MACHINES, LINING ERECTION EQUIPMENT - SAFETY REQUIREMENTS
    EN 1218-3:2001+A1:2009 SAFETY OF WOODWORKING MACHINES - TENONING MACHINES - PART 3: HAND FED TENONING MACHINES WITH SLIDING TABLE FOR CUTTING STRUCTURAL TIMBERS
    HD 384.4.41 S2:1996/A1:2002 ELECTRICAL INSTALLATIONS OF BUILDINGS - PART 4: PROTECTION FOR SAFETY - CHAPTER 41: PROTECTION AGAINST ELECTRIC SHOCK
    EN 1807-1 : 2013 SAFETY OF WOODWORKING MACHINES - BAND SAWING MACHINES - PART 1: TABLE BAND SAWS AND BAND RE-SAWS
    EN 61822:2009 ELECTRICAL INSTALLATIONS FOR LIGHTING AND BEACONING OF AERODROMES - CONSTANT CURRENT REGULATORS
    EN 60439-2:2000/A1:2005 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR ASSEMBLIES - PART 2: PARTICULAR REQUIREMENTS FOR BUSBAR TRUNKING SYSTEMS (BUSWAYS)
    EN 62040-1-2:2003/corrigendum:2004
    EN 60439-4:2004 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR ASSEMBLIES - PART 4: PARTICULAR REQUIREMENTS FOR ASSEMBLIES FOR CONSTRUCTION SITES (ACS)
    EN 61219 : 1993 LIVE WORKING - EARTHING OR EARTHING AND SHORT-CIRCUITING EQUIPMENT USING LANCES AS SHORT-CIRCUITING DEVICE - LANCE EARTHING (IEC 1219:1993)
    EN 1218-4:2004+A2:2009 SAFETY OF WOODWORKING MACHINES - TENONING MACHINES - PART 4: EDGE BANDING MACHINES FED BY CHAIN(S)
    EN 50490:2008 Electrical installations for lighting and beaconing of aerodromes - Technical requirements for aeronautical ground lighting control and monitoring systems - Units for selective switching and monitoring of individual lamps
    BS EN 61010-1:2010+A1:2019 (published 2019-03) Safety requirements for electrical equipment for measurement, control, and laboratory use General requirements
    15/30302620 DC : 0 BS EN ISO 19085-4 - WOODWORKING MACHINES - SAFETY - PART 4: VERTICAL PANEL CIRCULAR SAWING MACHINES
    DIN VDE 0660-100 : 1992 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR - PART 1: GENERAL RULES
    CEI 13-32 : 2000 WATT-VAR-HOUR METERS FOR LOW-VOLTAGE THREE-PHASE NETWORKS (INTEGRATED UNITS) PRESETTED FOR PROCESSING AND REMOTE MANAGEMENT OF DATA WITH OR WITHOUT INSERTION OF CURRENT TRANSFORMERS
    12/30265270 DC : 0 BS EN 1870-6 - SAFETY OF WOODWORKING MACHINES - CIRCULAR SAWING MACHINES - PART 6: CIRCULAR SAWING MACHINES FOR FIREWOOD AND DUAL PURPOSE CIRCULAR SAWING MACHINES FOR FIREWOOD/CIRCULAR SAW BENCHES, WITH MANUAL LOADING AND/OR UNLOADING
    BS EN 691-1:2012 SAFETY OF WOODWORKING MACHINES - PART 1: COMMON REQUIREMENTS
    11/30237566 DC : 0 BS EN 1870-18 - SAFETY OF WOODWORKING MACHINES - CIRCULAR SAWING MACHINES - PART 18: DIMENSION SAWS
    06/30157062 DC : 0 BS EN 62310-3 - STATIC TRANSFER SYSTEMS (STS) - PART 3: METHOD OF SPECIFYING THE PERFORMANCE AND TEST REQUIREMENTS
    BS EN 62282-5-1:2012 (published 2013-01) Fuel cell technologies Portable fuel cell power systems. Safety
    08/30178810 DC : DRAFT MAY 2008 BS EN 12750 - SAFETY OF WOODWORKING MACHINES - FOUR SIDED MOULDING MACHINES
    UNI EN 1870-19 : 2014 SAFETY OF WOODWORKING MACHINES - CIRCULAR SAWING MACHINES - PART 19: CIRCULAR SAW BENCHES (WITH AND WITHOUT SLIDING TABLE) AND BUILDING SITE SAWS
    EN 1218-5:2004+A1:2009 SAFETY OF WOODWORKING MACHINES - TENONING MACHINES - PART 5: ONE SIDE PROFILING MACHINES WITH FIXED TABLE AND FEED ROLLERS OR FEED CHAIN
    NF EN 62310-3 : 2008 STATIC TRANSFER SYSTEMS (STS) - PART 3: METHOD FOR SPECIFYING THE PERFORMANCE AND TEST REQUIREMENTS
    04/30106849 DC : DRAFT MAY 2004 EN 1870-1 - SAFETY OF WOODWORKING MACHINES - CIRCULAR SAWING MACHINES - PART 1: CIRCULAR SAW BENCHES (WITH AND WITHOUT SLIDING TABLE), DIMENSION SAWS AND BUILDING SITE SAWS
    09/30198762 DC : 0 BS EN 1807-1 - SAFETY OF WOODWORKING MACHINES - BAND SAWING MACHINES - PART 1: TABLE BAND SAWS AND BAND RE-SAWS
    11/30237557 DC : 0 BS EN 1870-11 - SAFETY OF WOODWORKING MACHINES - CIRCULAR SAWING MACHINES - PART 11: SEMI-AUTOMATIC AND AUTOMATIC HORIZONTAL CROSS-CUT SAWING MACHINES WITH ONE SAW UNIT (RADIAL ARM SAWS)
    09/30178353 DC : 0 BS EN 1870-16:2005/A1 - SAFETY OF WOODWORKING MACHINES - CIRCULAR SAWING MACHINES - PART 16: DOUBLE MITRE SAWING MACHINES FOR V-CUTTING
    DIN EN 1807-2:2013-06 Safety of woodworking machines - Band sawing machines - Part 2: Log sawing machines; German version EN 1807-2:2013
    UNE-EN 691-1:2013 Safety of woodworking machines - Part 1: Common requirements
    DIN ISO 8528-1:1997-11 RECIPROCATING INTERNAL COMBUSTION ENGINE DRIVEN ALTERNATING CURRENT GENERATING SETS - PART 1: APPLICATION, RATINGS AND PERFORMANCE
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    09/30178325 DC : DRAFT FEB 2009 BS EN 1870-5:2002/A1 - SAFETY OF WOODWORKING MACHINES - CIRCULAR SAWING MACHINES - PART 5: CIRCULAR SAWBENCHES/UP-CUTTING CROSS-CUT SAWING MACHINES
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    CEI UNI EN 45510-2-7 : 2006 GUIDE FOR PROCUREMENT OF POWER STATION EQUIPMENT - PART 2-7: ELECTRICAL EQUIPMENT - SWITCHGEAR AND CONTROLGEAR
    04/301783 DC : DRAFT JAN 2004 EN 848-3 - SAFETY OF WOODWORKING MACHINES - ONE SIDE MOULDING MACHINES WITH ROTATING TOOL - PART 3: NUMERICALLY CONTROLLED (NC) BORING MACHINES AND ROUTING MACHINES
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    09/30178328 DC : 0 BS EN 1870-6:2002/A1 - SAFETY OF WOODWORKING MACHINES - CIRCULAR SAWING MACHINES - PART 6: CIRCULAR SAWING MACHINES FOR FIREWOOD AND DUAL PURPOSE CIRCULAR SAWING MACHINES FOR FIREWOOD/CIRCULAR SAW BENCHES, WITH MANUAL LOADING AND/OR UNLOADING
    CEI EN 50490 : 2009 ELECTRICAL INSTALLATIONS FOR LIGHTING AND BEACONING OF AERODROMES - TECHNICAL REQUIREMENTS FOR AERONAUTICAL GROUND LIGHTING CONTROL AND MONITORING SYSTEMS - UNITS FOR SELECTIVE SWITCHING AND MONITORING OF INDIVIDUAL LAMPS
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