FOREWORD
1 Scope and specific applications
  1.1 Scope
  1.2 Specific applications
2 Normative references
3 Definitions
4 General conditions for tests
  4.1 Operating parameters for tests
  4.2 Loads for tests
  4.3 Components
  4.4 Power interfaces
  4.5 Marking and instructions
5 Fundamental design requirements
  5.1 Protection against electric shock and energy
       hazards
  5.2 Insulation
  5.3 Limited current circuits
  5.4 Provisions for protective earthing
  5.5 AC and d.c. power isolation
  5.6 Overcurrent and earth fault protection
  5.7 Protection of personnel - Safety interlocks
  5.8 Clearances, creepage distances and distances
       through insulation
  5.9 External signalling circuits
  5.10 Limited power source
6 Wiring, connections and supply
  6.1 General
  6.2 Connection to power
  6.3 Wiring terminals for external power conductors
7 Physical requirements
  7.1 Enclosure
  7.2 Stability
  7.3 Mechanical strength
  7.4 Construction details
  7.5 Resistance to fire
  7.6 Battery location
  7.7 Temperature rise
8 Electrical requirements and simulated abnormal
  conditions
  8.1 General
  8.2 Electric strength
  8.3 Abnormal operating and fault conditions
9 Connection to telecommunication networks
Annex H (informative) Guidance on protection against
        ingress of water and foreign objects
Annex L (normative) Backfeed protection test
Annex M (normative) Examples of reference load conditions
Annex N (normative) Ventilation of battery compartments
Annex X (informative) Guidance for disconnection of
        batteries during shipment
Annex ZA (normative) Normative references to international
         publications with their corresponding European
         publications
Bibliography