Draft Details

1.1       This Standard applies to rotating electrical machines for installation and use in accordance with CSA C22.1, Canadian Electrical Code Part 1; NFPA 70, National Electrical Code; and NOM-001-SEDE, Standard for Electrical Installations.

1.2       For the purposes of this Standard, the term "machine" is representative of and equivalent to the terms rotating electrical machine and rotating machine and is understood to mean all manner of electric motors and generators covered by the scope of this Standard. The term "machine" is also understood to apply to both AC and DC machines rated up to and including 34 kV and including but not limited to NEMA and IEC machines.

1.3       Machines intended for use in hazardous locations as defined in the CSA C22.1, Canadian Electrical Code Part 1; NFPA 70, National Electrical Code; and NOM-001-SEDE, Standard for Electrical Installations, may have additional requirements to be met as specified in the CSA C22.1, Canadian Electrical Code Part 1; NFPA 70 National Electrical Code; and NOM-001-SEDE, Standard for Electrical Installations.

1.4       These requirements cover electric generators, also referred to as alternators, and including those for standby use, rated 34 kV or less and when coupled with prime movers, such as engines or electric motors, are used to produce electricity.

1.5       These requirements cover squirrel cage polyphase induction motors intended for use with variable voltage and variable frequency controls, commonly referred to as inverters. The requirements in this Standard are intended to evaluate the suitability of the motor for normal use when fed from an inverter supply through a manufacturer declared range of operating conditions.

1.6       These requirements cover field-installed machines with form wound windings and rated for applications between 460 V and up to 34 kV.

1.7       These requirements also cover field-installed machines employing random wound windings and rated for applications above 1,000 V and up to 7,200 V.

1.8       These requirements do not cover:

a)         Overheating protection for motors;
b)         Machine protection that is dependent upon requirements for the end-use equipment in which the machine shall be installed;

c)         Sealed (hermetic type) motor-compressor parts;
d)         Electric machines for use in aircraft, marine service installations, drives for land transportation equipment, or machines used in underground mining;
e)         Stationary or portable generator assemblies, which are respectively covered under UL/ULC 2200, UL 2201, and CSA C22.2 No. 100.1;
f)          Sealed (hermetic type) motor-compressor parts, which are evaluated under UL 60335-2-34; or
g)         Special generators (such as hydrogen cooled (turbo) generators) rated 10 MVA and above which are covered under IEEE C50.12; IEEE C50.13; or IEC 60034-3.

1.9      This Standard does not address:

a)         The efficacy of motor overtemperature protection under abnormal conditions;
b)         The operation of a motor under unusual service conditions as described in NEMA MG-1; nor
c)         The operation of a motor in hazardous (Classified) locations for inverter duty motors.

1.10     This Standard provides basic requirements for machines and does not exclude any additional requirements given in any other standards referenced.

1.11   In this Standard, “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; and “may” is used to express an option or that which is permissible within the limits of the Standard.

1.12     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.

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