SN EN 62040-3 : 2001

1 Scope and object
2 Normative references
3 Terms and definitions
  3.1 Systems and components
  3.2 Performance of systems and components
  3.3 Specified values - General
  3.4 Input values
  3.5 Output values
4 General ambient service conditions
  4.1 Normal environmental and climatic service conditions
  4.2 Unusual service conditions to be identified by the
       purchaser
5 Electrical service conditions and performance
  5.1 General - All UPS
  5.2 UPS input specifications
  5.3 UPS output specifications
  5.4 UPS intermediate d.c. circuit and/or battery circuit
       specification
  5.5 UPS switches, rated values and performance
  5.6 Redundant and parallel UPS systems (refer to annex A)
  5.7 Electromagnetic compatibility
  5.8 Signalling circuits
6 Electrical test for UPS
  6.1 General
  6.2 UPS functional unit tests (where applicable)
  6.3 Type tests of manufacturer's declared characteristics
       as a complete UPS
  6.4 Reserved for future use
  6.5 Reserved for future use
  6.6 Factory witness tests/on-site tests
  6.7 UPS switches testing procedure
7 Non-electrical tests
  7.1 Environmental and transportation test methods
  7.2 Environmental storage and operating test methods
  7.3 Acoustic noise
Annex A (informative) Types of Uninterruptible Power Systems
        (UPS) configurations
  A.1 Single UPS
  A.2 Parallel UPS
  A.3 Redundant UPS
Annex B (informative) Examples of Uninterruptible Power
        System (UPS) operation
  B.1 UPS double conversion
  B.2 UPS double conversion with bypass
  B.3 UPS line interactive operation
  B.4 UPS line interactive operation with bypass
  B.5 UPS passive stand-by operation
Annex C (informative) Explanation of UPS switch definitions
  C.1 UPS interrupters
  C.2 Transfer switches
  C.3 UPS isolation switches
  C.4 UPS maintenance bypass switches
  C.5 Tie switches
  C.6 Multiple function UPS switches
Annex D (informative) Purchaser specification guidelines
  D.1 Type of UPS, additional features and system
       requirements
  D.2 UPS input
  D.3 Load to be operated from UPS
  D.4 UPS output
  D.5 Battery (where applicable)
  D.6 General application requirements and special service
       conditions
  D.7 Multi-module system configurations
  D.8 Electromagnetic compatibility
  D.9 Technical data sheets - Manufacturer's declaration
  D.10 Classification of uninterruptible power systems
       by performance
Annex E (normative) Reference non-linear load
Annex F (normative) Backfeed protection test
  F.1 Test for pluggable Type A or B UPS
  F.2 Test for permanently connected UPS (only for UPS
       with backfeed protection)
  F.3 Measuring instrument for earth leakage current tests
Annex G (normative) Input mains failure - Test method
  G.1 High impedance mains failure test
  G.2 Low impedance mains failure test
Annex H (informative) Determination of output voltage
        transient deviation characteristics
  H.1 General considerations
  H.2 Test methods and instrumentation
  H.3 Sinusoidal output voltage waveforms
  H.4 Non-sinusoidal output voltage waveforms
       (trapezoidal/quasi-square/square)
  H.5 Resistive load test method - Change of operating
       mode/step load
  H.6 Reference non-linear load test method - Change
       of operating mode/step load
Annex I (informative) Bibliography
Annex ZA
Common modification (as originally listed by CENELEC)

Defines the function of an uninterruptible power system (UPS) to ensure continuity of an alternating power source. It may also serve to improve the quality of the power source by keeping it within specified characteristics.