• SN EN 60950-1 : 2006 AMD 12 2011

    Current The latest, up-to-date edition.

    INFORMATION TECHNOLOGY EQUIPMENT - SAFETY - PART 1: GENERAL REQUIREMENTS

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    Published date:  12-01-2013

    Publisher:  Swiss Standards

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

    INTRODUCTION
    0 Principles of safety
       0.1 General principles of safety
       0.2 Hazards
       0.3 Materials and components
    1 General
       1.1 Scope
       1.2 Definitions
       1.3 General requirements
       1.4 General conditions for tests
       1.5 Components
       1.6 Power interface
       1.7 Marking and instructions
    2 Protection from hazards
       2.1 Protection from electric shock and energy locations
       2.2 SELV circuits
       2.3 TNV circuits
       2.4 Limited current circuits
       2.5 Limited power sources
       2.6 Provisions for earthing and bonding
       2.7 Overcurrent and earth fault protection in primary
            circuits
       2.8 Safety interlocks
       2.9 Electrical insulation
       2.10 Clearances, creepage distances and distances through
            insulations
    3 Wiring, connections and supply
       3.1 General
       3.2 Connection to an a.c. mains supply or d.c. mains supply
       3.3 Wiring terminals for connection of external conductors
       3.4 Disconnection from the mains supply
       3.5 Interconnection of equipment
    4 Physical requirements
       4.1 Stability
       4.2 Mechanical strength
       4.3 Design and construction
       4.4 Protection against hazardous moving parts
       4.5 Thermal requirements
       4.6 Openings in enclosures
       4.7 Resistance to fire
    5 Electrical requirements and simulated abnormal conditions
       5.1 Touch current and protective conductor current
       5.2 Electric strength
       5.3 Abnormal operating and fault conditions
    6 Connection to telecommunication networks
       6.1 Protection of telecommunication network service
            persons, and users of other equipment connected
            to the network, from hazards in the equipment
       6.2 Protection of equipment users from overvoltages
            on telecommunication networks
       6.3 Protection of the telecommunication wiring system
            from overheating
    7 Connection to cable distribution systems
       7.1 Protection of cable distribution system service
            persons, and users of other equipment connected
            to the system, from hazardous voltages in the
            equipment
       7.2 Protection of equipment users from overvoltages
            on the cable distribution system
       7.3 Insulation between primary circuits and cable
            distribution systems
    Annex A (normative) Tests for resistance to heat and fire
          A.1 Flammability test for fire enclosures of movable
               equipment having a total mass exceeding 18 kg and
               of stationary equipment
          A.2 Flammability test for fire enclosures of movable
               equipment having a total mass not exceeding 18 kg,
               and for material and components located inside
               fire enclosures
          A.3 Hot flaming oil test
    Annex B (normative) Motor tests under abnormal conditions
          B.1 General requirements
          B.2 Test conditions
          B.3 Maximum temperatures
          B.4 Running overload test
          B.5 Locked-rotor overload test
          B.6 Running overload test for d.c. motors in secondary
               circuits
          B.7 Locked-rotor overload test for d.c. motors in
               secondary circuits
          B.8 Test for motors with capacitors
          B.9 Test for three-phase motors
          B.10 Test for series motors
    Annex C (normative) Transformers
          C.1 Overload test
          C.2 Insulation
    Annex D (normative) Measuring instruments for touch-current
            tests
          D.1 Measuring instrument
          D.2 Alternative measuring instrument
    Annex E (normative) Temperature rise of a winding
    Annex F (normative) Measurement of clearances and creepage
            distances
    Annex G (normative) Alternative method for determining minimum
            clearances
          G.1 Summary of the procedure for determining minimum
               clearances
          G.2 Determination of mains transient voltage
          G.3 Determination of telecommunication network
               transient voltage
          G.4 Determination of required withstand voltage
          G.5 Measurement of transient voltage levels
          G.6 Determination of minimum clearances
    Annex H (normative) Ionizing radiation
    Annex J (normative) Table of electrochemical potentials
    Annex K (normative) Thermal controls
          K.1 Making and breaking capacity
          K.2 Thermostat reliability
          K.3 Thermostat endurance test
          K.4 Temperature limiter endurance
          K.5 Thermal cut-out reliability
          K.6 Stability of operation
    Annex L (normative) Normal load conditions for some types
            of electrical business equipment
          L.1 Typewriters
          L.2 Adding machines and cash registers
          L.3 Erasers
          L.4 Pencil sharpeners
          L.5 Duplicators and copy machines
          L.6 Motor-operated files
          L.7 Other business equipment
    Annex M (normative) Criteria for telephone ringing signals
          M.1 Introduction
          M.2 Method A
          M.3 Method B
    Annex N (normative) Impulse test generators
          N.1 ITU-T impulse test generators
          N.2 IEC 60065 impulse test generator
    Annex P (normative) Normative references
    Annex Q (informative) Bibliography
    Annex R (informative) Examples of requirements for quality
             control programmes
          R.1 Minimum separation distances for unpopulated
               coated printed boards
          R.2 Reduced clearances
    Annex S (informative) Procedure for impulse testing
          S.1 Test equipment
          S.2 Test procedure
          S.3 Examples of waveforms during impulse testing
    Annex T (informative) Guidance on protection against
            ingress of water
    Annex U (normative) Insulated winding wires for use
            without interleaved insulation
          U.1 Wire construction
          U.2 Type tests
          U.3 Tests during manufacture
    Annex V (normative) AC power distribution systems
          V.1 Introduction
          V.2 TN power distribution systems
          V.3 TT power distribution systems
          V.4 IT power distribution systems
    Annex W (informative) Summation of touch currents
          W.1 Touch current from electronic circuits
          W.2 Interconnection of several equipments
    Annex X (informative) Maximum heating effect in
            transformer tests
          X.1 Determination of maximum input current
          X.2 Overload test procedure
    Annex Y (normative) Ultraviolet light conditioning test
          Y.1 Test apparatus
          Y.2 Mounting of test samples
          Y.3 Carbon-arc light-exposure apparatus
          Y.4 Xenon-arc light-exposure apparatus
    Annex ZA (normative) Normative references to international
             publications with their relevant European
             publications
    Annex ZB (normative) Special national conditions
    Annex ZC (informative) A-deviations

    Abstract - (Show below) - (Hide below)

    States requirements intended to reduce risks of fire, electric shock or injury for the OPERATOR and layman who may come into contact with the equipment and, where specifically stated, for a SERVICE PERSON.

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    Document Type Standard
    Publisher Swiss Standards
    Status Current
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