This standard specifies the special terms for low-power motors. This standard is applicable to the formulation of standards, preparation of technical documents, writing and translation of professional manuals, teaching materials and books and periodicals for use by personnel in production, scientific research, application and teaching departments engaged in electrical and related professional work. GB/T 2900.27-1995 Electrical terminology low-power motors GB/T2900.27-1995 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Electrotechnical terminologySmall-power motor
1 Subject content and scope of application
This standard specifies the special terms for small-power motors. GB/T 2900.27--1995
Replaces GB2900.2785
This standard is applicable to the formulation of standards, preparation of technical documents, compilation and translation of professional manuals, teaching materials and books and periodicals, and is used by personnel in production, scientific research, application and teaching and other related departments engaged in electrical and related professional work. The terms specified in this standard are coordinated with the relevant parts of GR2900.1 "Basic terms of electrical terminology" and GB2900.25 "Electrical terminology rotating electrical machines"; terms not specified in this standard may be specified in relevant standards when necessary. 2 Reference standards
GB2900.1 Basic terms of electrical engineering
GB2900.25 Rotating electrical machines
3 General terms and product terms
3.1 General terms
3.1.1 Small-power motor Small-power moton A motor with a maximum continuous rating of no more than 1.1 kW when converted to 1500 r/min. 3.1.2 Fractional horsepower motor A motor with a maximum continuous rating of no more than 1. horsepower when converted to 1000 r/min. Note: This is used for document translation and is generally not recommended. 3.2 Small-power motor
3.2.1 Small-power direct current motor Small-power direct current motor A small-power motor that has an armature winding connected to a commutator and magnetic poles excited by a direct current power supply or permanent magnets and runs on a direct current power supply.
3.2.2 Coreless DC motor Coreless]Lironless]direct current motor A DC motor without a magnetic core in the rotor. 3.2.3 Moving-coil direct current motor A coreless DC motor with a cup-shaped armature winding. Printed direct current motor 3.2.4
A coreless DC motor whose disc-shaped armature winding is made of conductive metal foil using printed circuit board technology or equivalent technology. 3.2.5 Wound-disc direct current motor A coreless DC motor whose disc-shaped armature winding is wound with wire. 3.2-6 Slotless [surface-wound] (armature) direct current motor Approved by the State Administration of Technical Supervision on April 6, 1995 14-1
Implemented on January 1, 1996
GB/T 2900.27--1995
A direct current motor whose armature winding elements are placed on the surface of the slotless rotor core. 3.2.7 Small-power alternating current motor Small-power motor that runs on an AC power supply. 3.2.8 Small-power synchronous motor Small-power AC motor whose rotor speed is a constant ratio to the power supply frequency. 3.2.9 Reluctancc synchronous motor A synchronous motor that runs without excitation and uses the unequal reluctance of the rotor's direct and quadrature axes to generate reluctance torque. Usually the rotor is also equipped with a cage winding for starting.
3.2.10 Hysteresis synchronous motor A synchronous motor that has no rotor winding and operates by generating hysteresis torque by means of the rotating magnetic field formed by the stator winding and the hysteresis material on the rotor.
Hybrid synchronous motor3.2.11
A synchronous motor with a permanent magnet, hysteresis or reluctance rotor structure. 3.2.12
Low-speed synchronous motor A synchronous motor that operates on the principle of electromagnetic deceleration caused by the change of air gap permeability due to the tooth effect of the stator and rotor, and the average rotor speed is a fraction of the apparent synchronous speed.
3 Small-power asynchronous [induction] motor3.2.13
A small-power AC motor whose ratio of the rotor speed to the power supply frequency when under load is not a constant. Small-power three-phase asynchronous motor Small-power three-phase asynchronous Linduction] motor 3.2. 14
A small-power asynchronous motor that runs on a three-phase power supply. Small-power single-phase asynchronous motor Small-power single-phase asynchronous [induction] motor 3.2.15
A small-power asynchronous motor that runs on a single-phase power supply. 3.2.16
Split-phase motor Split-phase motor
A single-phase asynchronous motor with an auxiliary winding connected in parallel with the main winding, the auxiliary winding is offset in magnetic field position relative to the main winding, and measures are taken to make the currents of the two windings have a phase difference. Resistance-start split-phase motor 3.2.17
A split-phase motor that is started by connecting a resistor in series with the auxiliary winding or having the necessary resistance value so that the currents of the main winding and the auxiliary winding have a phase difference.
Note: When the motor reaches the appropriate speed, the auxiliary winding is disconnected. 3.2.18 Reactor-start split-phase motor A split-phase motor that starts with a reactor in series with the main winding to create a phase difference between the main winding and the auxiliary winding current. Note: When the motor reaches the appropriate speed, the auxiliary winding is disconnected and the reactor is short-circuited or rendered inoperative by other means. 3.2.19 Capacitor motor A split-phase motor that starts with a capacitor in series with the auxiliary winding to create a phase difference between the main winding and the auxiliary winding power supply. Capacitor-start motor 3.2.20
A capacitor motor in which the auxiliary winding and the capacitor in series are connected to the circuit only during starting. Permanent-split capacitor motor 3.2.21
A capacitor motor in which the capacitor in series with the auxiliary winding is the same during starting and running. Synonyms: capacitor start and run motor capacitor start and run motor 3.2.22 two-value capacitor motor two-value capacitor motor a capacitor motor in which the capacitance of the capacitor connected in series with the auxiliary winding is not alternating during start and run. 3.2.23 split-phase capacitor motor split-phase capacitor motor a capacitor motor in which the auxiliary winding operates during both start and run, but the capacitor is connected in series to the auxiliary winding circuit only during run.
GB/T 2900.27—1995
pole-changing split-phase motor a split-phase motor with pole-changing windings that can achieve different nominal speeds by changing the connection of the external terminals. 3.2.25
shaded-pole motor a single-phase asynchronous motor with short-circuited auxiliary windings on the poles. These windings are offset by an angle in the magnetic field relative to the main windings. All of these windings are on the primary core, usually on the stator. Small-power alternating current commutator motor3.2.26
A small-power alternating current motor whose armature winding is connected to the AC power supply via a commutator. 3.2.27
Single-phase commutator motor An AC commutator motor that runs on a single-phase power supply. 3 Single-phase series motor 3.2.28
A single-phase commutator motor in which the field winding is connected in series with the armature winding. 9 Small-power universal motor 3.2.29
A small-power motor that can be used for both DC power supply and single-phase industrial frequency AC power supply. And it has approximately the same speed at rated load under the same DC or AC voltage (effective value). 3.2.30 Repulsion motor A single-phase motor with a primary winding on the stator connected to the power supply and a secondary winding on the rotor connected to the commutator. The brushes on the commutator are short-circuited and can be moved along the circumferential surface of the commutator to change their position to change its speed characteristics. 3.2.31 Brushless direct current motor A motor without brushes and mechanical commutator, which uses rotor position detection signal to control the electronic commutation of each phase winding. 3.2.32
Small-power switched reluctance motor Small-power switched reluctance motor A small-power motor with similar number of salient poles on the stator and rotor, phase windings on the stator salient poles, which detects the rotor position signal to control the electronic power switch to make each phase winding work in sequence. 3.2.33 Small-power torque motor Small-power torque motor A small-power motor that can directly drive the load and is allowed to run between stall and no-load speeds, and is characterized by continuous (or short-term) output torque in the stall state.
3.2.34 Small-power gear motor Small-power gear motor A small-power motor with a gear reducer. 3.2.35 Small-power linear motor Small-power linear motor A small-power motor whose moving part moves in a linear direction. 3.3 Specified purposes and special purposes of small power motors 3.3.1 Clutch motor clutchmotor A motor that is integrated with a clutch.
3.3.2 Brake motor brake motor
A motor that is integrated with a brake. When the main circuit of the motor is powered off, it can brake quickly by itself. 3.3.3 Motor for hermetic refrigeration compressors motor installed in a sealed refrigeration compressor to drive the compressor. 3.3.4 Motor for air-conditioning condensers and evaporator fans motor for air-conditioning condensers and evapora-tor fans
Special motor for driving the condenser and evaporator fans of the air-conditioner. 3.3.5 Home-laundry motor; motor for household washing machine special motor for driving home-laundry washing machines and dehydrators. 3.3.6 Table fan motor motor for table fan146
Special motor for driving the blades of a table fan.
GB/T 2900.27—1995
Motor for ceiling fan motorforceilingfan3.3.7
Special motor for driving the blades of ceiling fan.
Motor for household ventilating fan motor3.3.8
Special motor for driving the blades of household ventilating fan. 3.3.10
Motor for industrial sewing machine motorforindustrial sewing machine Special motor for driving industrial sewing machine. 3.3.11
Special motor integrated with cooling pump. 3.3.12
Submersible motor for deep well pump submersible motor for driving deep well pump. 3.3.13 AC timing motor AC timing motor A small synchronous motor used as a timer or timer, usually with a reduction gear. 3.3.14 Range hood motor Range hood motor A special motor used to drive a range hood.
3.4 ​​Restrictive terms
3.4.1 Cylindrical (motor) cylindrical (motor) A motor with a radial air gap magnetic field and a cylindrical rotor. 3.4.2
Disc type (motor) disc type [pancake] (motor) A motor with an axial air gap magnetic field and a disc-shaped rotor. 3.4.3 With external rotor (motor) A motor with a stator inside and a rotor outside. 3.4.4 Electromagnetic (motor) wound-field (motor) A motor whose excitation magnetic field is generated by an excitation winding (motor). 3.4.5 Permanent magnet (motor) A motor whose magnetic system includes one or more permanent magnets. 3.4.6 Unidirectional (motor) A motor that can only be started and operated in a specified direction. 3.4.7 Reversible (motor) [bidirectional door (motor) A motor that can be started and operated in both directions. 3.4.8 Claw-pole type (motor) A motor whose stator (or rotor) has a claw-shaped magnetic pole structure made of soft magnetic material. 3.4.9 Open (motor) A motor with ventilation holes that allows cold air from outside to pass through the motor and take away the heat from the heat-generating parts. Dripproof (motor) dripproof (motor) 3.4.10
-An open motor whose ventilation holes are structured so that liquids or solid particles dripping at any angle of 0° to 15° from the vertical line can reach or enter the casing without affecting the normal operation of the motor. 3.4.11 splash-proof (motor) splash-proof (motor) An open motor whose ventilation holes are structured so that liquids or solid particles dripping at any angle of no more than 100° from the vertical line can reach or enter the casing without affecting the normal operation of the motor. 3. 4.12
Totally enclosed (motor) 117
GB/T 2900.27 --- 1995
The motor is enclosed so that the air inside and outside the casing cannot be exchanged. However, its sealing is not enough to be airtight. 3.4.13 Totally enclosed fancooled (motor) A totally enclosed motor that uses a self-cooling fan or an external fan to cool the motor's outer surface. 3.4.14 Totally-enclosed nonventilated (motor) A totally enclosed motor that has no cooling device on the outside of its casing. 3.4.15 Totally-enclosed watercooled (motor) A totally enclosed motor that uses circulating water for cooling, with the water or water pipes in direct contact with the motor components. 3.4.16 Waterproof (motor) A totally enclosed motor that is structured to prevent jets of water from entering the motor. 3.4.17 Explosion-proof (motor) A fully enclosed motor whose casing is designed and manufactured to withstand the explosion of specific gases or vapors that may appear in the motor and to prevent the sparks, flashovers or explosions of specific gases or vapors that may appear in the casing from igniting the specific gases or vapors around the motor.
3.4.18 Open-frame (motor) without E-protective enclosure: a motor without an enclosure or without a complete enclosure, which cannot prevent human contact with or access to live parts and rotating parts inside the motor, and cannot prevent the entry of solid foreign objects.
3.4.19 Thermally protected (motor): a motor equipped with a thermal protector.
3.4.20 Impedance-protected (motor): an AC motor whose winding impedance is high enough so that the input current will not be too large to cause overheating under any load condition, including stalling.
Tapped-winding (motor): a motor whose winding has multiple taps, which are connected to the external terminals. Dual-voltage (motor): a motor that can operate at two different rated voltages by changing the winding connection method. 3.4.23 Encapsulated (motor) with plastics (motor) whose stator (or rotor) is sealed by engineering plastics with both insulation and protection functions. 4 Main parts and accessories
4.1 Main winding
The winding directly connected to the power supply in the split-phase motor. 4.2 Auxiliary winding
The winding used for auxiliary starting or operation in the split-phase motor. Usually connected to the power supply with a phase shifting element in series. 4.3 Sinusoidal winding The number of turns of the coil in each slot under each pole is distributed according to a certain rule, so that the air gap magnetic potential distribution under the pole is close to the concentric winding of the sine function. 4.4 Shading coil
A short-circuit coil on the salient pole shoe of the stator of the shaded pole motor. 4.5 Starting switch starting switch
A starting device connected in series with the auxiliary winding of a single-phase motor. When the motor reaches the specified speed, the auxiliary winding circuit is disconnected. 4.61
Centrifugal starting switch A starting switch in which the centrifugal device in the rotating part separates the contacts on its stator when the speed exceeds a certain level. Starting relay motor-starting relay 4.7
A relay used for starting single-phase motors. The relay is activated by the change in current or voltage when the motor is started, disconnecting the auxiliary winding circuit of the motor.
GB/T 2900.27-1995
Positive temperature coefficient thermistor (for motor starting) PTCthermistor (formotor starting) 4.81
A thermistor connected in series with the auxiliary winding circuit of a single-phase motor. When the motor starts, the thermal effect of the starting current flowing through it significantly increases its resistance, and the auxiliary winding current is extremely small. 4.9 Motor thermal protector thermal protector formotor is installed in the motor to prevent the motor from being damaged by overheating due to overload or abnormal starting. 4.10 Embedded thermal protector on-winding protector is a small thermal protector directly installed in the motor winding or on the end surface. 4.11 Thermal cutoff thermal protector thermal cutoff is a one-time thermal protector that melts when the specified temperature is reached. 4.12
Temperature sensitive thermal protector thermal protector with temperature sensitive tripping A thermal protector whose tripping action is related to temperature. 3 Temperature and current sensitive thermal protector thermal protector with temperature and current sensitive tripping 4.13
A thermal protector whose tripping action is not only related to temperature, but also to the current flowing through the thermal protector. Automatic-reset thermal protector automatic-reset thermal protector4.14
A thermal protector that automatically turns on again after it is disconnected and the motor cools down to a certain degree. 4.15 Manual-reset thermal protector manual-resetthermal protector A thermal protector that turns on once a day and always remains disconnected until it is manually reset. 4.16 Rotor position sensor rotorposition sensor A sensor installed in a brushless DC motor to detect the relative position of the rotor poles and the stator windings in space. The signal it sends is used to control the electronic switch to achieve electronic commutation of each phase winding. 4.17 Centrifugal governor A device that is installed coaxially with the motor and repeatedly switches the main circuit of the motor on a certain speed to maintain a stable speed under the action of the centrifugal component on it.
4.18 Speed ​​controller (for small-power motor) adjustable-speed coniroller (for small-power motor) An electronic device that uses power devices to control parameters such as input voltage or current to a small-power motor to achieve speed regulation. 5 Characteristics and parameters
5.1 Mechanical characteristics speed-torque characteristics The relationship between the torque and speed of the motor under specified conditions. 5.2 Linearizing speed-torque characteristics The mechanical characteristics of the AC torque motor connected by a straight line through the no-load speed point and the stall torque point. 5.3 Non-linearity of speed-torque characteristics The maximum value of the ratio of the speed difference between the actual mechanical characteristics and the linearized mechanical characteristics to the no-load speed of the AC torque motor under certain input conditions.
5.4 Reluctance torque reluctance torque The electromagnetic torque generated by the unequal reluctance of the AC and DC axes under the action of the rotating magnetic field. 5.5 Minimum synchronizing voltage minimum synchronizing voltage The minimum line terminal voltage of the synchronous motor from starting to pulling into the synchronous speed under the conditions of rated frequency, specified load torque and specified load moment of inertia.
5.6 Breakaway voltage The minimum line terminal voltage of the motor from rest to the start of continuous rotation under specified conditions. 5.7 Switch operating speed149
GB/T 2900.27--1995
The speed of a single-phase motor when the starting switch disconnects the auxiliary winding circuit during the starting and acceleration process. 5.8 Switching torque
The minimum output torque corresponding to the disconnecting speed during the starting and acceleration process of a single-phase motor. 5.9 Speed ​​regulation of direct current motorThe difference between the stable no-load speed and the stable rated load speed, expressed as a percentage of the rated load speed. 6 Operation and test
6.1 Speed ​​regulation with series reactorThe working method of a single-phase asynchronous motor is to change the motor speed by connecting a reactor in series to the stator end to reduce the motor terminal voltage.
6.2 Capacitor terminal voltage testCapacitor-voltage testWhen a single-phase capacitor motor is working under specified conditions, the effective value of the AC voltage borne by the working capacitor is checked to confirm whether the capacitor is working within a safe range. 6.3 Switch operating speed of centrifugal switch test Check the speed of the centrifugal switch when the auxiliary winding is disconnected during the starting and acceleration process of the single-phase motor. 6.4 Radio interference test Radio interference test Determine the degree of radio interference generated by the motor in the surrounding space during operation. Generally, this test is only performed on DC or AC commutator motors.
6.5 Magnetic stability test
Magnetic stability testWww.bzxZ.net
After the permanent magnet motor runs under specified conditions, check the stability of its magnetic properties. 6.6 Short-time overtorque test short-time overtorque test is a test to determine the motor's ability to withstand a specified overtorque multiple within a specified time. 6.7
Pull-up torque test is a test to determine the minimum torque of the AC motor during the starting process. 6.81
Accidental over-current test is a test to determine the motor's ability to withstand a specified overcurrent multiple within a specified time. Abnormal operation test6.9
A test to assess whether the motor can still ensure safety in the event of abnormal operation or erroneous operation. 6.10 Endurance test is a test to determine the long-term operating reliability of the motor. 6.11 Operating time limit test is a test to determine the normal operating period of the motor guaranteed by the manufacturer to the user under specified conditions. 150
Cup-shaped armature DC motor
Pole-changing split-phase motor
Tapped winding (motor)
Series reactance speed regulation
Magnetic stability test
Hysteresis synchronous motor·
Reluctance synchronous motor.·
Reluctance torque
Single (rotation) direction (motor)
Single-phase series motor
Single-phase commutator motor
Low-speed synchronous motor
Electromagnetic (motor)
Motor thermal protector
Reactance starting split-phase motor
Capacitor motor Machine
Capacitor start motor
Determination of capacitor terminal voltage
Capacitor run motor
Resistor start split-phase motor
Motor for ceiling fan
Short-time overtorque test
Disconnection speed
Explosion-proof (motor)
Drip-proof (motor)
Splash-proof (motor).
Waterproof (motor
Abnormal working test
Fractional horsepower motor
Split-phase motor·
Split-phase capacitor motor·
Auxiliary winding
GB/T 2900.271995
Chinese index
Industrial sewing machine motor
Duty test
Hybrid synchronous motor·
Mechanical characteristics
Mechanical characteristics nonlinearity
Household sewing machine motor
Household ventilating fan motor
Household washing machine motor
AC timer motor·
Open type (motor)
Reversible (motor)
Air conditioner 3.3.4L
Cooling pump motor ·
Clutch motor
Centrifugal switch
Determination of the disconnecting speed of the centrifugal switch
Centrifugal speed regulator ·
Motors for sealed refrigeration compressors
Durability test
Occasional overcurrent test
Disc type (motor)
Determination of minimum torque during starting
Starting relay
Starting switch
Embedded thermal Protector.
Switching torque
Totally enclosed air-cooled (motor).
Totally enclosed (motor)·
Totally enclosed water-cooled (motor)·
Totally enclosed ventilation-free (motor)
Thermal protection (motor)
Thermal break type thermal protector
Submersible motor for deep well pump·
Starting voltage
Manual reset thermal protector.
Dual voltage (motor)·
Dual value capacitor motor||t t||Speed ​​controller (for small power motor)·Plastic package (motor)
Table fan motor
Repulsion motor·
Outer rotor (motor)
Temperature and current sensitive thermal protector·
Temperature sensitive thermal protector
Slotless (armature) DC motor
(motor) without [protective] casing.
Brushless DC motor·
Coreless DC motor
Determination of radio interference
GB/T 2900.27--1995
.3.4.15
Range hood motors
Wire wound disc type DC motors
Linearized mechanical characteristics
Small power gear motors-
Small power single-phase asynchronous motors.
Small power motors
Small power AC motors
Small power AC commutator motors
Small power AC/DC dual-purpose motors·
Small power switched reluctance motors
Small power torque motors
Small power three-phase asynchronous motors.
Small power synchronous motors
Small power asynchronous motors
Small power DC motors
Low power linear motor.
Printed wire group DC motor
Permanent magnet type (motor)
Cylindrical type (motor)
Wing shaded pole coil
Shaded pole asynchronous motor
Positive temperature coefficient thermistor (for motor starting)Sinusoidal winding
Speed ​​regulation of DC motor
Brake motor
Main winding
Gulu pole type (motor)
Rotor position sensor·
Automatic reset thermal protector
Impedance protection (motor)
Minimum synchronous voltage
..3.2.32
..3.2.14
- 3. 2.13
AC timing motor
abnormal operation test
accidental over-current testGB/T 2900.27--- 1995
English index
adjustable-speed controller for small-power notorautomatic-reset thermal protectorauxiliary winding
brake motor
breakaway voltage
brushless direct current motorcapacitor motor
capacitor-start motor
capacitor start and run motorcapacitor-voltage test
centrifugal governor
centrifugal starting switch
claw-pole type (motor)
clutch motor
coolant pump motor
Huan Dian Heart
coreless LironlessJ direct current motorcylindrical (motor)
disc type [pancake] (motor)
dripproof (motor)
dual-voltage (motor)
encapsulated (motor) with plasicsendurance test
explosion-proof (motor)
fractionai horsepower motor
home-laundry motor
hybrid synchronous motor
hysteresis synchronous motolimpedance-protected (motor)
linearizing speed-torque characteristicslow-speed synchronous motor
magnetic stability test
main winding
manual-reset thermal protectorminimum synchronizing voltageGB/T 2900.27--1995
motor for air-conditioning condensers and evaporator fansmotor for ceiling fan
motor for hermetic refrigeration compressorsmotor for household sewing machinemotor for household ventilating fanmotor for househoid washing machinemotor for industrial sewing-machinemotar for table fan ...
motor-stating relay
moving-coil direct current motorN
non-linearity af speed-torgue characteristics0
on-winding protector
open (motor)..
open-frame (motor)
operating time limnit test
PTC thermistor (for motor starting).permanent magnet (motor) ....... permanent-split capacitor motorpole-changing split-phase motor中#品心##国心
Welcome to Dianguo Yingliangdian
printed direct current motorpull-up torque test
quality professional products
radio interference test
range hood motor
reactor-start split-phase motorreluctance synchronous motorreluctance toryue
repulsion motor
resistance-start split-phase motorreversible [bidirectional] (motor)rotor position sensor
shaded-pole motor .
shading coil||tt| |short-time overtorque test
single-phase commutator motorsingle-phase series motor
sinusoidal winding
GB/T 2900.27-1995
slotless[surface-woundll (armature) direct current motorsmall-power alternating current commutator motorsmall-power alternating current notor .....small-power asynchronous [induction ] motorsmall-power direct current motor .......small-power gearmotor
small-power linear motor
small-power motor
中ea中eaa
small-power singlephase asynchronous Einduction motor *small-power switchen reluctance motoraeDae
small-power synchronous motorsmall-power three-phase asynchronous EinductionJ motor中·中-
small-power torque motor ...small-power universal motor
speed regulation of directcurrent motorspeed regulation with series reactorspced-torque characteristicssplash-proof (motor) ...
split phase capacitor motor
split-phase motor
starting switch .........
submersible motor for deep well pump 国中
.3.2.8
、3.2.33
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