1 Guidance principles and basic information
  1.1 Scope
  1.2 Additional requirements
  1.3 References
  1.4 Acronyms
2 Definitions
  2.1 Abnormal condition
  2.2 Basic insulation
  2.3 Clearance
  2.4 Creepage distance
  2.5 Disconnect device
  2.6 Double insulation
  2.7 Electrical enclosure
  2.8 Enclosure
  2.9 External circuit
  2.10 Fire enclosure
  2.11 Functional insulation
  2.12 Instructed person
  2.13 Intermittent operation
  2.14 Mains
  2.15 Mains transient voltage
  2.16 Mechanical enclosure
  2.17 Non-detachable power supply cord
  2.18 Normal condition
  2.19 Ordinary person
  2.20 Peak working voltage
  2.21 Permanently connected equipment
  2.22 Pluggable equipment type A
  2.23 Pluggable equipment type B
  2.24 Pollution degree
  2.25 Potential ignition source
  2.26 Potential ignition source 1
  2.27 Potential ignition source 2
  2.28 Principal safeguard
  2.29 Protective conductor
  2.30 Protective bonding conductor
  2.31 Protective earthing conductor
  2.32 Rated current
  2.33 Rated frequency
  2.34 Rated voltage
  2.35 Reinforced insulation
  2.36 Reinforced safeguard
  2.37 Required withstand voltage
  2.38 Ripple-free
  2.39 Safeguard
  2.40 Safety interlock
  2.41 Short-time operation
  2.42 Skilled person
  2.43 Stationary equipment
  2.44 Supplementary insulation
  2.45 Supplementary safeguard
  2.46 Temperature limiter
  2.47 Thermal cut-out
  2.48 Thermostat
  2.49 Transportable equipment
  2.50 Tool
  2.51 Touch current
  2.52 Working voltage
3 Electric shock hazards
  3.1 Electrical parameters relating to the human body
  3.2 Electric shock energy sources
  3.3 Protection against energy sources
  3.4 Accessible parts
  3.5 Safeguard
  3.6 Insulation system
  3.7 Components as safeguards
  3.8 Protective conductor
4 Fire hazards
  4.1 Power sources and potential ignition sources
  4.2 Fire hazards under normal condition
  4.3 Fire hazards under abnormal conditions
  4.4 Flammable liquids and vapours
  4.5 Batteries
  4.6 Fire hazard due to entering of foreign objects
5 Burn Hazard
  5.1 Access to hot surfaces
  5.2 Bridging of conductive parts
6 Mechanical hazards
  6.1 Sharp edges and corners
  6.2 Hazardous rotating or otherwise moving parts
  6.3 Loosening, exploding or imploding parts
  6.4 Instability of equipment
7 Radiation
  7.1 Laser radiation
  7.2 Ionising radiation
8 Chemical hazards
  8.1 Hazardous chemicals
  8.2 Ozone
  8.3 Dust, particulates, liquids, or gases
Annex A (informative) Examples of equipment within the
        scope of this Standard
Annex B (normative) General conditions for tests
  B.1 Applicability of requirements
  B.2 Type of tests
  B.3 Test samples
  B.4 Conditions for tests
  B.5 Temperature measurement conditions
  B.6 Temperature measurement methods
  B.7 Simulated abnormal conditions
Annex C (informative) Bibliography
Annex D (normative) Test generators
  D.1 General
  D.2 ITU-T test generators
  D.3 Antenna interface test generator
Annex E (normative) Measuring network for touch currents
Annex F (normative) Marking and instructions
  F.1 Introduction
  F.2 Marking
  F.3 Instructions
Annex G (normative) Components
  G.1 Switches
  G.2 Thermal cut-outs
  G.3 Thermal links
  G.4 PTC-S thermistors
  G.5 Protective devices not mentioned in G.2 to G.4
  G.6 High voltage components and assemblies
  G.7 Transformers
  G.8 Motors
  G.9 Mains supply cords
  G.10 Voltage dependent resistors (VDRs)
Annex H (normative) Criteria for telephone ringing signals
  H.1 Introduction
  H.2 Method A
  H.3 Method B
Annex J (informative) Overvoltage Categories (see 3.6.2)
Annex K (normative) Insulated winding wires
        for use without interleaved insulation
  K.1 General
  K.2 Sampling tests
  K.3 Testing during manufacture
Annex L (normative) Safety interlocks
  L.1 General requirements
  L.2 Inadvertent reactivation
  L.3 Fail-safe operation
  L.4 Override
  L.5 Mechanically operated interlock switches
Annex M (normative) Disconnect devices
  M.1 General requirements
  M.2 Test method
Annex N (normative) Batteries
  N.1 Requirements
  N.2 Test method
Annex P (normative) Table of electrochemical potentials
Annex Q (normative) Measurement of creepage
        distances and clearances
Annex R (reserved for future work)
Annex S (normative) Limited power sources
  S.1 Definition
  S.2 Test method
Annex T (normative) Constructional requirements for
potential ignition sources 1 and 2
  T.1 General
Annex U (normative) Tests for resistance to heat and fire
  U.1 Flammability test for fire enclosures of
       transportable equipment having a total mass not
       exceeding 18 kg, and for material and components
       located within fire enclosures
  U.2 Flammability tests for the bottom of fire
       enclosures
  U.3 Flammability test for high voltage cables
  U.4 Flammability classification of materials
Annex V (normative) Tests for enclosures
  V.1 Steady force test, 30 N
  V.2 Impact test
Annex W (normative) Mechanical strength of picture
        tubes and protection against the effects of
        implosion
  W.1 General
  W.2 Non-intrinsically protected picture tubes