The full name of the variable voltage frequency motor is the YVF2 Series Variable Frequency Speed Control Three-Phase Asynchronous Motor. It is a specialized speed control motor powered by a variable frequency drive(VFD), compliant with International Electrical Commission (IEC) standards. This series achieves smooth speed regulation through VFD adaptation, fulfilling energy-saving and automated control objectives.
Note the details of the speed regulation range: Constant torque operation is guaranteed within the 3Hz-50Hz frequency range; Constant power operation requires differentiation by pole number: - 2-pole motors: 50Hz-60Hz - 4-pole to 6-pole motors (excluding 355 frame 4-pole, i.e., 355-4): 50Hz-100Hz - 355-4 motors: 50Hz-75Hz

Here are some additional data points:

Power ratings	0.55-315kw
Frame sizes	80-355mm
Protection ratings	IP55
Insulation class	F
Duty	S1

Core Features

Variable voltage frequency motors deliver precise speed control. Constant torque operation starts at 3Hz , covering the 3Hz-50Hz range; Constant power operation is designed with pole-specific ranges: 2-pole, 4-pole to 6-pole (excluding 355-4), and 355-4 motors correspond to 50Hz-60Hz, 50Hz-100Hz, and 50Hz-75Hz ranges respectively. Speed regulation accuracy reaches ±1%, meeting dynamic speed requirements for diverse loads.
Its design achieves high energy efficiency through optimized stator-rotor slot matching and all-copper windings, with select models meeting the IE3 super-efficient standard. Energy savings for fan and pump loads reach 20%-40%. Equipped with external fan cooling, it ensures controllable temperature rise during low-speed operation for all models from 63 to 355mm center height, meeting heat dissipation demands across the full power range.
The motors offer flexible installation adaptability. Their mounting dimensions are compatible with the Y2 series, supporting horizontal and vertical installations such as B3, B5, and B35 configurations. Accessories like encoders and electromagnetic brakes can be integrated to enable closed-loop control and rapid braking.

Scope of Application

Variable frequency motors are Widely used in industrial scenarios requiring continuous and frequent forward and reverse operation, categorized by application field.

Heavy Industry	Drives for Steel Rolling, Lifting, and Transportation Equipment
Manufacturing Industry	Precision Speed Control for Machine Tools, Printing and Dyeing, and Paper-Making Equipment
Chemical and Light Industry	Speed Control for Chemical, Textile, and Pharmaceutical Production Lines
General Machinery	Suitable for various general-purpose equipment requiring variable frequency speed control.

Operating environment

The operating environment for variable voltage frequency motor drives is largely similar to that of conventional motors.

Temperature Conditions	Ambient temperature -15°C to 40°C (customization)
Altitude Restrictions	Not exceeding 1000m; higher altitudes require prior specification;
Power Requirements	380V (customization)
Frequency	50/60Hz
Power Requirements	Voltage fluctuations of ±5% and frequency fluctuations of ±2% are permitted.
Operating Conditions:	Non-corrosive gas environments with no severe vibration; supports direct, Y/Δ, or reduced-voltage starting.

Model Description

Taking the YVF2-80M1-2 as an example,explain the model designation of multi-speed motors.

Order Instructions

Please indicate the following information when placing your order:

Motor model: YVF2-80M1-2
1	Rated Voltage	380V
2	Rated frequency	50Hz
3	Rated power	0.27kw
5	Poles	2
6	Protection level	IP55
7	Installation type	IMB3
8	Rotation direction	Clockwise direction (viewed from the extension end of the motor shaft)
9	Outlet box location	at the top of the motor
Note: If you have specific requirements for parameters such as frequency, voltage, ambient temperature, or altitude for variable frequency motor, please clearly specify these when placing your order. If the required data catalog is unavailable, you may also inquire about and request a customized version.

Catalogue

Some of the parameters are as follows:

Type	Rated Output	Rated Current	Rated output Torque	Speed	Locked Torque	Max Torque	Moment of inertia	Weight
Type	(KW	(A)	(N.m)	(r/min)	Rated Torque	Rated Torque	(kg.m)	(Kg)
YVF2-80M1-2	0.75	1.90	2.4	2840	2.2	2.8	0.0007	17
YVF2-80M2-2	1.1	2.68	3.5	2840	2.2	2.8	0.0009	19
YVF2-908-2	1.5	3.51	4.8	2840	2.2	2.8	0.0013	22
YVF2-90L-2	2.2	4.93	7	2840	2.2	2.8	0.0016	26
YVF2-100L-2	3	6.43	9.5	2860	2.2	2.8	0.0029	34
YVF2-112M-2	4	8.31	12.7	2880	2.2	2.8	0.0058	42
YVF2-13281-2	5.5	11.2	17.5	2900	2.2	2.8	0.0109	60
YVF2-13282-2	7.5	14.9	23.9	2900	2.2	2.8	0.0131	67
YVF2-160M1-2	11	21.4	35	2930	2.2	2.8	0.0392	102
YVF2-160M2-2	15	28.9	47.7	2930	2.2	2.8	0.0461	112
YVF2-160L-2	18.5	35.4	58.9	2930	2.2	2.8	0.0603	143
YVF2-180W-2	22	41.8	70	2940	2.2	2.8	0.0719	165
YVF2-200L1-2	30	56.5	95.5	2950	2.2	2.8	0.1254	225
YVF2-200L2-2	37	69.3	117.8	2950	2.2	2.8	0.1429	242
YVF2-225M-2	45	83.8	143.2	2960	2.2	2.8	0.2339	298
YVF2-250M-2	55	102	175.1	2965	2.2	2.8	0.3608	385