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CSA C747-09 Document Information:
Title
Energy efficiency test methods for small motors
CSA Standards
Publication Date:
Oct 1, 2009
Scope:
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*.
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.
This Standard specifies quoting methods and allowable tolerances
on nominal efficiency values.
This Standard applies only to motors rated as continuous
duty.
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.
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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