FOREWORD
1 Scope and specific applications
1.1 Scope
1.2 Specific applications
2 Normative references
3 Definitions
4 General requirements
4.1 UPS design and construction
4.2 User information
4.3 Classification of UPS
4.4 General conditions for tests
4.5 Operating parameters for tests
4.6 Loads for tests
4.7 Components
4.8 Power interfaces
4.9 Marking and instructions
5 Fundamental design requirements
5.1 Protection against electric shock and energy hazards
5.2 SELV
5.3 Emergency switching device
5.4 Backfeed protection
5.5 Insulation
5.6 Safety extra-low voltage (SELV) circuits
5.7 Limited current circuits
5.8 Provisions for protective earthing
5.9 AC and d.c. power isolation
5.10 Overcurrent and earth fault protection
5.11 Service person protection
5.12 Clearances, creepage distances and distances through
insulation
5.13 External signalling circuits
5.14 Limited power source
6 Wiring, connections and supply
6.1 General
6.2 Connection to power sources
6.3 Wiring terminals for external power conductors
7 Physical requirements
7.1 Enclosure
7.2 Stability
7.3 Construction details
7.4 Resistance to fire
7.5 Battery location
7.6 Temperature rise
8 Electrical requirements and simulated abnormal conditions
8.1 General
8.1.1 Earth leakage current
8.1.2 Pluggable equipment type B UPS
8.2 Electric strength
8.3 Abnormal operating and fault conditions
8.3.1 Simulation of faults
8.3.2 Conditions for tests
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 P (normative) Minimum and maximum cross-sections of
copper conductors suitable for connection
Bibliography