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    • C747-09 (R2019)

    Codes & Standards - Purchase

    C747-09 (R2019)

    Energy efficiency test methods for small motors
    SKU: 2420227 Published by CSA Group Publication Year 2009 Reaffirmed in 2019 26 pages

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    Preface


    This is the second edition of CSA C747, Energy efficiency test methods for small motors. It supersedes the previous edition, published in 1994 under the title Energy Efficiency Test Methods for Single- and Three-Phase Small Motors.


    Scope


    1.1

    This Standard specifies the test methods to be used in measuring the energy efficiency of small direct-current (dc) and single- and three-phase alternating-current (ac) rotating motors. This Standard includes the following motor types:


    (a) capacitor, permanent-split;


    (b) capacitor, capacitor-start or capacitor-run;


    (c) split phase;


    (d) split phase start, capacitor-run;


    (e) shaded pole;


    (f) reluctance;


    (g) polyphase induction;


    (h) dc*;


    (i) permanent magnet*;


    (j) brushless dc*; and


    (k) inverter driven*.


    *See Clause 4.


    1.2

    This Standard applies to


    (a) dc and three-phase ac motors with output power rated greater than or equal to 0.186 kW and less than 0.746 kW at 1800 RPM (or equivalent*); and *Equivalent is defined as a motor with the same torque output but with different kilowatt output and speed.


    (b) single-phase ac motors rated greater than or equal to 0.186 kW.


    The test method specified in this Standard may be applied to smaller motors.


    1.3

    This Standard specifies quoting methods and allowable tolerances on nominal efficiency values.


    1.4

    This Standard applies only to motors rated as continuous duty.


    1.5

    SI units of measurement should be used in the application of this Standard; however, other units may be used for testing provided that they are used consistently.


    1.6

    In CSA Standards, shall is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; should is used to express a recommendation or that which is advised but not required; may is used to express an option or that which is permissible within the limits of the standard; and can is used to express possibility or capability.


    Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.


    Notes to tables and figures are considered part of the table or figure and may be written as requirements.


    Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

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    CAN/CSA-C747-94 (R2005)

    Energy Efficiency Test Methods for Single- and Three-Phase Small Motors

    Withdrawn

    An update to this product is available.


    To receive notifications when an amendment, new edition or update is available to your standard no matter how you purchased it, please register on the Standards Update Service. After registering, enter the List ID for the relevant standard. The List ID can be found in the “CSA Standards Update” section within the first few pages of the standard you’ve purchased. Once notified, you can then update your standard accordingly.


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