1
Electric Motors
Item Description as available in HS classification
8501 electric motors and generators (no sets)
850110Motors of an Output Not Exceeding 37.5w
850120Universal Ac/dc Motors of an Output Exceeding 37.5w
850131Dc Motors, Dc Generators, of an Output Not Exceeding 750w
850132Dc Motors, Dc Generators, Output Exceeding 750w But Not Exceeding 75kw
850133Dc Motors, Dc Generators, Output Exceeding 75kw But Not Exceeding 375kw
850134Dc Motors, Dc Generators, of an Output Exceeding 375kw
850140Other Ac Motors, Single-phase
850151Ac Motors, Multi-phase, of an Output Not Exceeding 750w
850152Ac Motors, Multi-phase, Output Exceeding 750w But Not Exceeding 75kw
850153Ac Motors, Multi-phase, of an Output Exceeding 75kw
850161Ac Generators of an Output Not Exceeding 75kva
850162Ac Generators of an Output Exceeding 75kva But Not Exceeding 375kva
850163Ac Generators of an Output Exceeding 375kva But Not Exceeding 750kva
850164Ac Generators of an Output Exceeding 750kva
Definitions (as available in Fed register)
(A)The term “electric motor” means any motor which is a general purpose T-frame, single-speed, foot-mounting, polyphase squirrel-cage induction motor of the National Electrical Manufacturers Association, Design A and B, continuous rated, operating on 230/460 volts and constant 60 Hertz line power as defined in NEMA Standards Publication MG1–1987.
(B)The term “definite purpose motor” means any motor designed in standard ratings with standard operating characteristics or standard mechanical construction for use under service conditions other than usual or for use on a particular type of application and which cannot be used in most general purpose applications.
(C)The term “special purpose motor” means any motor, other than a general purpose motor or definite purpose motor, which has special operating characteristics or special mechanical construction, or both, designed for a particular application.
(D)The term “open motor” means a motor having ventilating openings which permit passage of external cooling air over and around the windings of the machine.
(E)The term “enclosed motor” means a motor so enclosed as to prevent the free exchange of air between the inside and outside of the case but not sufficiently enclosed to be termed airtight.
(F)The term “small electric motor” means a NEMA general purpose alternating current single-speed induction motor, built in a two-digit frame number series in accordance with NEMA Standards Publication MG1–1987.
(G)The term “efficiency” when used with respect to an electric motor means the ratio of an electric motor’s useful power output to its total power input, expressed in percentage.
(H)The term “nominal full load efficiency” means the average efficiency of a population of motors of duplicate design as determined in accordance with NEMA Standards Publication MG1–1987.
Indian Standards
Top of FormBottom of Form
IS 996 : 1979 / Single-phase small ac and universal electric motors / Active
IS 2968 : 1964 / Dimensions of Slide Rails Electric Motors / Active
IS 9582 : Part 1 : 1980 / Single-phase electric motors for definite purposes: Part 1 Domestic laundry machine motors / Active
IS 14122 : 1994 / Built in thermal protection for electric motors rated up to 660 V ac / Active
IS 14582 : 1998 / Single-phase small a.c. electric motors for centrifugal pumps for agricultural applications / Active
ANSI Approved Standards
Product Standards
ANSI/API 541-2003
Form-Wound
Squirrel-Cage Induction Motors 250
Horsepower and Larger
ANSI/API 547-2004
General Purpose
Form-Wound Squirrel Cage Induction
Motors-250 Horsepower and Larger
ASTM F1134-1997 (R2002)
Specification
for Insulation Resistance Monitor for
Shipboard Electrical Motors and
Generators
IEEE 1255-2000
Guide for Evaluation of
Torque Pulsations During Starting of
Synchronous Motors
IEEE 1349-2001
Guide for Application of
Electric Motors in Class I Division 2
Hazardous (Classified) Locations
IEEE 303-2004
Auxiliary Devices for
Motors in Class 1 – Groups A, B, C, and
D, Division 2 Locations
IEEE 334-1999
Qualifying Continuous Duty
Class 1E Motors for Nuclear Power
Generating Stations
IEEE 649-1992 (R2004)
Qualifying Class
1E Motor Control Centers for Nuclear
Power Generating Stations
IEEE 841-2001
Chemical Industry –
Severe Duty Totally Enclosed Fan-Cooled
(TEFC) Squirrel Cage Induction Motors –
Up to and Including 500 hp
IEEE C37.96-2000
Guide for AC Motor
Protection
IEEE C62.21-2003
Guide for the
Application of Surge Voltage Protective
Equipment on AC Rotating Machinery
1000 Volts and Greater
ANSI C50.41-2000
Polyphase Induction
Motors for Power Generating Stations
NEMA MG 1-2003
Revision 1, Motors and
Generators
Repair Standards
EASA (Electrical Apparatus Service
Association) ANSI/EASA AR100-2006
Recommended
Practice for the Repair of Rotating
Electrical Apparatus
IEEE 1068-1996
Recommended Practice
for the Repair and Rewinding of Motors
for the Petroleum and Chemical Industry
Test Standards
IEEE 114-2001
Standard Test Procedure
for Single-Phase Induction Motors
IEEE 252-1995 (R2002)
Motors Having
Liquid in the Magnetic Gap, Test
Procedure for Polyphase Induction
ANSI/(NFPA) T3.9.17 R2-1997 (R2004)
Hydraulic Fluid Power - Positive
Displacement Pumps, Motors and
Integral Transmissions - Method of
Testing and Presenting Basic
Performance Data
Installation Standards
ANSI/NECA 402-2001
Recommended
Practice for Installing Motor Control
Centers
ANSI/NECA 230-2003
Recommended
Practice for Installing Motors
Standards for Industrial Safety
UL 347-2000
Standard for Safety for High
Voltage Industrial Control Equipment
UL 508-2005
Industrial Control Equipment
UL 674-2003
Electric Motors and
Generators for Use in Hazardous
Locations, Class I Groups C and D, Class
II Groups E, F and G
ISO Standards
ISO 3019-1:2001
Hydraulic fluid power - Dimensions and identification
code for mounting flanges and shaft ends of
displacement pumps and motors - Part 1: Inch series
shown in metric units
ISO 3019-2:2001
Hydraulic fluid power - Dimensions and identification
code for mounting flanges and shaft ends of
displacement pumps and motors - Part 2: Metric series
ISO 3662:1976
Hydraulic fluid power - Pumps and motors - Geometric
displacements
ISO 4391:1983
Hydraulic fluid power - Pumps, motors and integral
transmissions - Parameter definitions and letter symbols
ISO 4392-1:2002
Hydraulic fluid power - Determination of characteristics
of motors - Part 1: At constant low speed and constant
pressure
ISO 4392-2:2002
Hydraulic fluid power - Determination of characteristics
of motors - Part 2: Startability
ISO 4392-3:1993
Hydraulic fluid power - Determination of characteristics
of motors - Part 3: At constant flow and at constant
torque
ISO 4409:1986
Hydraulic fluid power - Positive displacement pumps,
motors and integral transmissions - Determination of
steady-state performance
ISO 4412-2:1991
Hydraulic fluid power - Test code for determination of
airborne noise levels - Part 2: Motors
ISO 8426:1988
Hydraulic fluid power - Positive displacement pumps and
motors - Determination of derived capacity
ISO 13342:1995
Small craft - Static thrust measurement for outboard
motors
ISO 13591:1997
Small craft - Portable fuel systems for outboard motors
ISO 9775:1990
Small craft - Remote steering systems for single
outboard motors of 15 kW to 40 kW power
ISO 12333:2000
Aerospace - Constant displacement hydraulic motors -
General specifications for 35 000 kPa systems
ISO 9206:1990
Aerospace - Constant displacement hydraulic motors -
General specifications
ISO 7650:1987
Commercial vehicles and buses - Mounting dimensions
for starter motors of types 1, 2, 3 and 4
IEC Standards
IEC 60034-12 Ed. 2.0 b:2002
Rotating electrical machines - Part 12: Starting
performance of single-speed three-phase cage
induction motors
Specifies four standard designs of starting performance of
single speed three-phase cage induction motors for direct
on-line or star-delta starting and rated on the basis of duty-type
S-1 (maximum continuous rating). Also covers dual voltage
motors in so far as the flux saturation level is the same for both
voltages.
IEC 60034-2 Ed. 3.0 b:1972
Rotating electrical machines. Part 2: Methods for
determining losses and efficiency of rotating
electrical machinery from tests (excluding
machines for traction vehicles)
"Applies to d.c. machines and to a.c. synchronous and
induction machines. The principles can be applied to other
types of machines such as rotary converters, a.c. commutator
motors and single-phase induction motors for which other
methods of determining losses are used. "
IEC 60034-26 Ed. 1.0 b:2006
Rotating electrical machines - Part 26: Effects of
unbalanced voltages on the performance of
three-phase cage induction motors
Describes the effects of unbalanced voltages on the
performance of three-phase cage induction motors.
IEC 60072-1 Ed. 6.0 b:1991
Dimensions and output series for rotating electrical
machines - Part 1: Frame numbers 56 to 400 and
flange numbers 55 to 1080
"Covers most industrial rotating electrical machines within the
dimension range: Foot-mounted: shaft heights 56 mm to 400
mm. Flange-mounted: pitch circle diameter of flange 55 mm to
1080 mm. Gives fixing dimensions, shaft extension
dimensions and output powers. Maximum permissible torques
for continuous duty on a.c. motors are also listed for various
shaft diameters. "
IEC 60072-3 Ed. 1.0 b:1994
Dimensions and output series for rotating electrical
machines - Part 3: Small built-in motors - Flange
numbers BF10 to BF50
IEC 60092-301 Amd.1 Ed. 3.0 b:1994
Amendment 1 - Electrical installations in ships.
Part 301: Equipment - Generators and motors
IEC 60092-301 Amd.2 Ed. 3.0 b:1995
Amendment 2 - Electrical installations in ships.
Part 301: Equipment - Generators and motors
IEC 60092-301 Ed. 3.0 b:1980
Electrical installations in ships. Part 301:
Equipment - Generators and motors
Concerns rotating electrical machines rated at 750 W or more
and excitation machines. Includes relevant requirements for
prime-movers' driving generators.
IEC 60092-501 Ed. 3.0 b:1984
Electrical installations in ships. Part 501: Special
features - Electric propulsion plant
"Applies to electric propulsion machinery and plant. Deals with
the specifications, installation and testing of: propulsion
motors; propulsion generators and their prime movers;
electrical coupling; associated semiconductor convertors;
excitation systems; control monitoring, instrumentation and
protection equipment and systems; wires and cables. Bow and
stern thrusters intended as auxiliary steering devices, all
auxiliary generating plants and accumulator battery powered
propulsion machinery and equipment are excluded. "
IEC 60252-1 Ed. 1.0 b:2001
"AC motor capacitors - Part 1: General -
Performance, testing and rating - Safety
requirements - Guide for installation and
operation"
"Applies to motor capacitors intended for connection to
windings of asynchronous motors supplied from a
single-phase system having a frequency up to and including
100 Hz, and to capacitors to be connected to three-phase
asynchronous motors so that these motors may be supplied
from a single-phase system. This standard covers
impregnated or unimpregnated capacitors having a dielectric
of paper, plastic film, or a combination of both, either
metallized or with metal-foil electrodes, with rated voltages up
to and including 660 V. "
IEC 60252-2 Ed. 1.0 b:2003
AC motor capacitors - Part 2: Motor start
capacitors
"Applies to motor start capacitors intended for connection to
windings of asynchronous motors supplied from a
single-phase system having the frequency of the mains.
Covers impregnated or unimpregnated metallized motor start
capacitors having a dielectric of paper or plastic film, or a
combination of both and electrolytic motor start capacitors with
non-solid electrolyte, with rated voltages up to and including
660 V."
IEC 60349-2 Ed. 2.0 b:2002
Electric traction - Rotating electrical machines for
rail and road vehicles - Part 2: Electronic
convertor-fed alternating current motors
"Applies to convertor-fed alternating current motors forming
part of the equipment of electrically propelled rail and road
vehicles. The object of this part is to enable the performance
of a motor to be confirmed by tests and to provide a basis for
assessment of its suitability for a specified duty and for
comparison with other motors. Where further testing is to be
undertaken in accordance with IEC 61377, it may be
preferable, to avoid duplication, that some type and
investigation tests be carried out on the combined test bed. "
IEC 60644 Ed. 1.0 b:1979
Specification for high-voltage fuse-links for motor
circuit applications
Applies primarily to fuse-links used with motors started
direct-on-line on alternating current systems of 50 Hz and 60
Hz. Standardizes time-current characteristics to formulate
additional pulse withstand requirements regarding testing and
to give guidance for the selection of fuse-links to be used with
motors. Note: -Fuse-links according to this specification
should comply with the requirements of IEC 60282-1.
IEC 60681-1 Ed. 1.0 b:1980
Dimensions of small power motors for definite
purpose application - Part 1: Oil burner motors
"Specifies dimensions for small power motors intended for
driving oil burners for voltages up to 500 V, 50 Hz and 60 Hz.
IEC 60681-1 Ed. 1.0 b:1980
Dimensions of small power motors for definite
purpose application - Part 1: Oil burner motors
"Specifies dimensions for small power motors intended for
driving oil burners for voltages up to 500 V, 50 Hz and 60 Hz.
IEC 60991 Ed. 1.0 b:1989
Resilient mounting rings for small motors -
Mounting dimensions
IEC 61377-1 Ed. 1.0 b:2006
Railway applications - Rolling stock - Part 1:
Combined testing of inverter-fed alternating
current motors and their control system
"Specifies the performance characteristics of electric drives
consisting of an inverter, alternating current motors, and the
related control system; and provides methods of verifying
these performance characteristics by tests."
IEC 61377-2 Ed. 1.0 b:2002
Railway applications - Rolling stock - Combined
testing - Part 2: Chopper-fed direct current traction
motors and their control
"Applies to the combinations of motor(s), chopper and their
control, and its object is to specify a)the performance
characteristics of electric drives consisting of a chopper, direct
current motors, and the related control system b)methods of
verifying these performance characteristics by tests. In traction
drives, a combined system with chopper and direct current
motor(s) without any control between the mechanical output
and the chopper is not usual. It is not, therefore, considered in
this standard. IEC 60349-1 applies to chopper-fed direct
current motors, IEC 61287-1 to power electronic convertors,
and IEC 60571 to electronic equipments. As a consequence,
IEC 60349-1 describes the tests to demonstrate the
compliance of the motor to its specification, while IEC 61287-1
does the same for the chopper."
IEC 61377-3 Ed. 1.0 b:2002
"Railway applications - Rolling stock - Part 3:
Combined testing of alternating current motors,
fed by an indirect convertor, and their control
system"
"Specifies a) the performance characteristics of electric drives
consisting of a convertor, alternating current motors, and the
related control system;b) methods of verifying these
performance characteristics by tests "
IEC 61800-1 Ed. 1.0 b:1997
Adjustable speed electrical power drive systems -
Part 1: General requirments - Rating specifications
for low voltage adjustables speed d.c. power drive
systems
"Applies to general purpose adjustable speed d.c. driven
systems which include the power conversion, control
equipment, and also a motor or motors. Excluded are traction
and electrical vehicle drives. Applies to power driven systems
(PDS) connected to line voltages up to 1 kV a.c., 50 Hz or 60
Hz."
IEC 61800-2 Ed. 1.0 b:1998
Adjustable speed electrical power drive systems -
Part 2: General requirements - Rating
specifications for low voltage adjustable frequency
a.c. power drive systems
"Applies to general purpose adjustable speed a.c. drive
systems which include power conversion, control equipment,
and also an a.c. motor or motors. Excluded are tractional and
electrical vehicle drives. Applies to systems connected to line
voltages up to 1 kV a.c., 50 Hz or 60 Hz, and load side
frequency up to 600 Hz."
IEC 61972 Ed. 1.0 b:2002
Method for determining losses and efficiency of
three-phase cage induction motors
"Establishes two methods for determination of efficiency:
Method 1: for motors tested by using a torque measurement
device, with additional load losses derived from
measurements; Method 2: for motors tested without torque
measurement, with assigned additional load losses. "
IEC 61986 Ed. 1.0 b:2002
Rotating electrical machines - Equivalent loading
and super-position techniques - Indirect testing to
determine temperature rise
"Applies to machines covered by IEC 60034-1 when they
cannot be loaded to a specific condition (rated or otherwise)
for whatever reason. It is applicable to both motors and
generators but the methods are not suitable for machines of
and below 1 kW. Provides descriptions of various indirect load
tests, the purpose of which is to determine the temperature
rise of rotating electrical machines, including a.c. induction
machines, a.c. synchronous machines and d.c. machines. The
test methods in some cases provide, in addition, a means of
measuring or estimating other parameters such as losses and
vibration, but the methods are not designed specifically to
provide such data. "
IEC/TR 60785 Ed. 1.0 b:1984
Rotating machines for electric road vehicles "Applies to rotating electrical machines (traction motors and
auxiliary motors) of electric road vehicles including hybrids,
which are fed from the main traction battery. Lays down
general rules for the design, installation and testing of traction
motors and auxiliary motors which are mounted on electric
road vehicles, and indicates the technical requirements and
testing conditions for them. Has the status of a technical
report. "
IEC/TS 60034-17 Ed. 4.0 b:2006
Rotating electrical machines - Part 17: Cage
induction motors when fed from converters -
Application guide
"Deals with the steady-state operation of cage induction
motors within the scope of IEC 60034-12, when fed from
converters. Covers the operation over the whole speed setting
range, but does not deal with starting or transient
phenomena."
IEC/TS 60034-20-1 Ed. 1.0 b:2002
Rotating electrical machines - Part 20-1: Control
motors - Stepping motors
Gives the requirements for rotating control motors and
describes the appropriate tests. Also gives dimensions and
marking information and the details to be provided by the
manufacturer in associated data sheets and catalogues.
Applicable to rotating stepping motors only.
IEC/TS 60034-25 Ed. 1.0 en:2004
Rotating electrical machines - Part 25: Guide for
the design and performance of cage induction
motors specifically designed for converter supply
Describes the design features and performance characteristics
of polyphase cage induction motors specifically designed for
use on voltage source converter supplies up to 1 000 V. Also
specifies the interface parameters and interactions between
the motor and the converter including installation guidance as
part of a power drive system.
IEC/TS 60349-3 Ed. 1.0 b:1995
Electric traction - Rotating electrical machines for
rail and road vehicles - Part 3: Determination of
the total losses of convertor-fed alternating current
motors by summation of the component losses
Applies to machines complying with IEC 60349-2. This
publication has the status of a Technical Report - type 2.
Indian Standards
Document Number / Standard Title / StatusTop of Form
Bottom of Form
IS 996 : 1979 / Single-phase small ac and universal electric motors / Active
IS 2968 : 1964 / Dimensions of Slide Rails Electric Motors / Active
IS 9582 : Part 1 : 1980 / Single-phase electric motors for definite purposes: Part 1 Domestic laundry machine motors / Active
IS 14122 : 1994 / Built in thermal protection for electric motors rated up to 660 V ac / Active
IS 14582 : 1998 / Single-phase small a.c. electric motors for centrifugal pumps for agricultural applications / Active
Federal Mandate -Energy Efficiency