• I.S. EN 50091-1:1993

    Withdrawn A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

    UNINTERRUPTIBLE POWER SYSTEMS (UPS) - GENERAL AND SAFETY REQUIREMENTS

    Available format(s):  Hardcopy, PDF

    Withdrawn date:  22-10-2003

    Language(s):  English

    Published date:  05-11-1993

    Publisher:  National Standards Authority of Ireland

    For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
    Only cited Standards give presumption of conformance to New Approach Directives/Regulations.

    Dates of withdrawal of national standards are available from NSAI.

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    Table of Contents - (Show below) - (Hide below)

    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 Marking and instructions
    2 Fundamental design requirements
      2.1 Protection against electric shock and energy
           hazards
      2.2 Insulation
      2.3 Safety Extra-Low Voltage (SELV) circuits
      2.4 Limited current circuits
      2.5 Provisions for protective earthing
      2.6 AC and DC power isolation
      2.7 Overcurrent and earth fault protection
      2.8 Protection of personnel. Safety interlocks
      2.9 Clearances, creepage distances and distances
           through insulation
      2.10 External signalling circuits
      2.11 Limited power source
      2.12 Protection of the applied load
    3 Wiring, connections and supply
      3.1 General
      3.2 Connection to power
      3.3 Wiring terminals for external power conductors
    4 Physical requirements
      4.1 Stability and mechanical hazards
      4.2 Mechanical strength and stress relief
      4.3 Construction details
      4.4 Resistance to fire
      4.5 Battery location
    5 Thermal and electrical requirements
      5.1 Heating
      5.2 Earth leakage current
      5.3 Electric strength
      5.4 Abnormal operating and fault conditions
    Annex A: Test for resistance to heat and fire (normative)
    Annex B: Motor test under abnormal conditions (normative)
    Annex C: Transformers (normative)
    Annex D: Measuring instrument for earth leakage current
             test (normative)
    Annex E: Temperature rise of a winding (normative)
    Annex F: Measurement of creepage distances and clearances
             (normative)
    Annex G: Earth leakage current for equipment intended to be
             connected directly to IT power systems (normative)
    Annex H: Guidance on protection against ingress of water
             and foreign objects (informative)
    Annex J: Table of electrochemical potentials (informative)
    Annex K: Thermal controls (normative)
    Annex L: Backfeed protection test (normative)
    Annex M: Examples of normal load conditions (normative)
    Annex N: Ventilation of battery compartments (normative)
    Annex P: Normative reference to International Publications
             (normative)
    Annex Q: A-Deviations (informative)

    Abstract - (Show below) - (Hide below)

    Applies to electronic indirect a.c. convertor systems with electrical energy storage means in the d.c. link. The primary function of the uninterruptible power system (UPS) covered by this standard is to ensure continuity of an alternating power source.

    General Product Information - (Show below) - (Hide below)

    Document Type Standard
    Publisher National Standards Authority of Ireland
    Status Withdrawn

    Standards Referencing This Book - (Show below) - (Hide below)

    IEC 60146-4:1986 Semiconductor convertors. Part 4: Method of specifying the performance and test requirements of uninterruptible power systems
    EN 60924:1991/A1:1994 SPECIFICATION FOR GENERAL AND SAFETY REQUIREMENTS FOR D.C. SUPPLIED ELECTRONIC BALLASTS FOR TUBULAR FLUORESCENT LAMPS
    IEC 60950:1999 Safety of information technology equipment
    IEC 60364-4-41:2005+AMD1:2017 CSV Low voltage electrical installations - Part 4-41: Protection for safety - Protection against electric shock
    EN 50091-2:1995/corrigendum Jan. 1998
    EN 60950:2000/corrigendum:2002 SAFETY OF INFORMATION TECHNOLOGY EQUIPMENT
    IEC 60925:1989+AMD1:1996+AMD2:2001 CSV DC supplied electronic ballasts for tubular fluorescent lamps - Performance requirements
    IEC 60529:1989+AMD1:1999+AMD2:2013 CSV Degrees of protection provided by enclosures (IP Code)
    IEC 61000-2-2:2002+AMD1:2017 CSV Electromagnetic compatibility (EMC) - Part 2-2: Environment - Compatibility levels for low-frequency conducted disturbances and signalling in public low-voltage power supply systems
    IEC 60364-7-707:1984 Electrical installations of buildings. Part 7: Requirements for special installations or locations. Section 707: Earthing requirements for the installation of data processing equipment
    EN 60529:1991/AC:2016-12 DEGREES OF PROTECTION PROVIDED BY ENCLOSURES (IP CODE) (IEC 60529 EDITION 2.2 CORRIGENDUM 2:2015)
    ISO 7000:2014 Graphical symbols for use on equipment Registered symbols
    HD 243 : S12 GRAPHICAL SYMBOLS FOR USE ON EQUIPMENT - INDEX, SURVEY AND COMPILATION OF THE SINGLE SHEETS
    IEC 60445:2017 Basic and safety principles for man-machine interface, marking and identification - Identification of equipment terminals, conductor terminations and conductors
    EN 60320-1:2015/AC:2016 APPLIANCE COUPLERS FOR HOUSEHOLD AND SIMILAR GENERAL PURPOSES - PART 1: GENERAL REQUIREMENTS (IEC 60320-1:2015/COR1:2016)
    EN 60925:1991/A2:2001 SPECIFICATION FOR PERFORMANCE REQUIREMENTS FOR D.C. SUPPLIED ELECTRONIC BALLASTS FOR TUBULAR FLUORESCENT LAMPS
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