CSA C22.2 No. 60950 : 0

Preface
Foreword
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 Markings and instructions
2 Protection from hazards
  2.1 Protection from electric shock and energy hazards
  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 insulation
3 Wiring, connections and supply
  3.1 General
  3.2 Connection to a.c. mains supplies
  3.3 Wiring terminals for connection of external
       conductors
  3.4 Disconnection from the a.c. mains supply
  3.5 Interconnection of equipment
  3.6 Special considerations for equipment connected to
       a centralized d.c. power system - DC mains voltages
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
       personnel, 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
  6.4 Protection against overvoltage from power line
       crosses
  6.5 Acoustic tests
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 total mass not
             exceeding 18 kg, and for material and
             components located inside fire enclosures
        A.3 High current arcing ignition test
        A.4 Hot wire ignition test
        A.5 Hot flaming oil test
        A.6 Flammability tests for classifying materials
             V-0, V-1 or V-2
        A.7 Flammability test for classifying foamed
             materials HF-1, HF-2 or HBF
        A.8 Flammability test for classifying materials HB
        A.9 Flammability test for classifying materials 5V
        A.10 Stress relief conditioning
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 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 and
        other signals
        M.1 Introduction
        M.2 Method A
        M.3 Method B
        M.4 Other telecommunication signals
Annex N (normative) Impulse test generators
Annex P (normative) Normative references
        P.1 UL and CSA component requirements (mandatory)
        P.2 UL and CSA component requirements (alternative)
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 Test during manufacture
Annex V (normative) A.C. power distribution systems
        V.1 Introduction
        V.2 TN power systems
        V.3 TT power systems
        V.4 IT power 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 NAA (normative) Markings and instructions
Annex NAB (normative) Centralized d.c. power systems and
          special earthing requirements for d.c. powered
          equipment
          NAB.1 System descriptions
          NAB.2 General requirements
          NAB.3 Special requirements
Annex NAC (normative) Power line crosses
          NAC.1 Equipment evaluation
          NAC.2 Test conditions
          NAC.3 Test set-up
          NAC.1 Compliance
Annex NAD (informative) Terminology
Annex NAE (informative) U.S. and Canadian regulatory
          requirements

This standard is applicable to mains-powered or battery-powered information technology equipment, including electrical business equipment and associated equipment. This standard is also applicable to such information technology equipment designed and intended to be connected directly to a TELECOMMUNICATION NETWORK, regardless of the source of power. It specifies 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 is intended to reduce such risks with respect to installed equipment.