SN EN 60950-1 : 2006 AMD 12 2011

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

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.