Asynchronous motor AEMUT 80 A2: Power: 1.5 kW; nominal rated revolution: 3000/min; size (height of the axis of rotation): 80 mm; shaft diameter: 19 mm; frequency AC 50 Hz voltage 220 V.
General information about asynchronous electric motor AEMUT 80 A2
Asynchronous single-phase alternating-current electric motors with squirrel-cage rotor AEMUT 80 A2 are intended for electric drive equipment of various mechanisms in all branches of industry, household appliances (woodworking machines, compressors, pumps, etc.), agricultural machinery drives and small-scale mechanization household devices (concrete mixers, feed choppers, etc.). Our company offers single-phase electric motors with protection degree IP 54, which ensures their durability and reliability.
Designation decoding of asynchronous single-phase electric motor AEMUT 80 A2
AEM – series marking UT – single-phase, with two-phase winding on the stator 80 – frame center height according to DSTU13267 A – core length 2 – number of poles.
Design version of asynchronous single-phase electric motor AEMUT 80 A2
Depending on the mounting method, the single-phase motor has the following design versions:
IM 1081 (foot-mounted)
IM 2081 (combined)
IM 3081 (flange-mounted).
Protection degree of asynchronous single-phase electric motor AEMUT 80 A2
The electric motor AEMUT 80 A2 is manufactured with a squirrel-cage rotor of enclosed design with protection degree IP 54 according to DSTU 17494, which provides protection against water and dust.
Operating mode of asynchronous single-phase electric motor AEMUT 80 A2
The electric motors are made with a two-phase winding on the stator and are intended to operate with a capacitor. To reduce the effect of ambient temperature on the capacitance of the capacitors, they should be placed in areas least exposed to temperature fluctuations. During operation of the motor, it is recommended to periodically monitor the capacitance value of the capacitor.
Insulation heat resistance class of asynchronous single-phase electric motor AEMUT 80 A2
F – insulation withstands temperature of 135 °C according to DSTU 8865-93.
Voltage and frequency of the network for asynchronous single-phase electric motor AEMUT 80 A2
The electric motor AEMUT 80 A2 is designed to operate from an AC mains supply with a voltage of 220 V at a frequency of 50 Hz. Operation from a mains voltage of 240 V at 50 Hz and 220 V or 240 V at 60 Hz is permitted.
Insulation resistance of windings of asynchronous single-phase electric motor AEMUT 80 A2
Relative to the frame and between windings in cold condition under normal environmental climatic factors – not less than 5 MΩ, and at motor temperature close to operating – not less than 1 MΩ, at the upper value of air humidity – not less than 0.5 MΩ.
Specifications
Common
Model
AEMUT 80 A2
Motor type
asynchronous
Kind
general purpose industrial motor
Motor series
АЕМУТ
Shaft diameter, mm
19
Voltage, V
220
Frequency of the current, Hz
50
Power kW
1.5
Vol./Min
3000
Climatic performance
У3, У2, УХЛ4, 04
Motor insulation class
F
Class of protection, IP
54
Weight, kg
12,0
Consumed nominal current, In (A)
9,44
Dimension (height of rotation axis), mm
80
Number of poles
2
Phase
1-фазний
The ratio of max. torque to rated power, Mmax/Mn
2,1
The ratio of starting current to the nominal, Istart/In
5,5
The ratio of starting torque to rated power, Mstart/Mn
1,8
Purpose, construction, and operating principle of single-phase asynchronous motors
A single-phase asynchronous motor is a low-power machine that, by its design, resembles three-phase electric motors with a squirrel-cage rotor. The motor requires only one phase with a voltage of 220 V and can be connected to a household socket. The difference between a single-phase asynchronous motor and a three-phase one lies in the stator design, where in the slots of the magnetic core there is a two-phase winding consisting of the main (working) phase with a phase zone of 120 electrical degrees and terminals marked C1 and C2, and an auxiliary (starting) phase with a phase zone of 60 electrical degrees and terminals marked B1 and B2 (Fig. 1).
Fig. 1. Connection diagram of a single-phase asynchronous motor with squirrel-cage rotor.
A single-phase asynchronous AC electric motor is intended for electric drive equipment of various mechanisms in all branches of industry, household appliances (woodworking machines, compressors, pumps, etc.), agricultural machinery drives and small-scale mechanization household devices (concrete mixers, feed choppers, etc.).
The single-phase electric motor operates at a frequency of 50 Hz, voltage 220 V, protection degree IP55, insulation class F. Mounting versions: foot (IM1001), flange (IM3001), small flange (IM3181), combined (IM2001), combined – small flange (IM2181). Climatic version – U3.
A single-phase asynchronous motor is generally manufactured as low-power. Unlike the three-phase one, it has a single-phase stator winding. The rotor of such a motor has a squirrel-cage winding. Since a single-phase current does not create a rotating magnetic field, single-phase motors do not have an initial or starting torque. To create starting torque, a second so-called starting winding is placed on the stator of the motor, shifted relative to the working winding by 90°. Both windings are powered from a 220 V supply. To create a phase shift between the currents of both windings, a capacitor or a large active resistance is connected.
A single-phase asynchronous electric motor has a number of disadvantages compared to a similar three-phase motor:
