YSP series Low Voltage VFD Electric Motor

Frame Size: 80-355mm

Power: 0.75-315kW(2 poles)

0.55-315 kW (4 poles)

0.75-250kW(6 poles)

2.2-200kW(8 poles)

45-160kW(10 poles)

55-132kW(12 poles)

Voltage: 220/380/400/415/440/660/690V (±5%)

Frequency: 5-50Hz(constant torque)

50-67Hz (constant power)

Rate Speed: 2950/1450/980/730/590rpm(50Hz)

3560/1760/1180/880/708rpm(60Hz)

Insulation Grade: F Class (155℃)

Protection Class: IP54/IP55/IP56

Temperature Rising: ΔT=80°K (B class)

Bearing type: Roller/Ball bearing

Working Duty: S1 (Continuous)

Service Factor: 1.00

Ambient Temperature: -20°C ~ 40°C

Altitude: 1000m.a.s.l

Ambient humidity: ≦90%

Cooling Method: lC41 1/1C416

Installation: IMB3/IMB5/IMB35/IMV1

Performance Range:

General Description

YSP series variable frequency speed regulating three-phase asynchronous motor is a new type of speed regulating motor with variable frequency speed regulating device as power supply.

YSP series motors are made of sophisticated materials, with low noise, high efficiency, wide speed range, high precision, stable operation, convenient operation and maintenance. Its installation size conforms to the International Electrotechnical Association (IEC) standard. The protection grade of the enclosure is IP44, IP54 and IP55. The quota is a continuous quota based on the continuous working system (S1). Its voltage is 380V, 660V, rated frequency 50Hz, continuous speed regulation in the range of 5-67Hz, constant torque operation in 5-50Hz and constant power operation in 50-67Hz. This series of motors is equipped with an independent strong wind cooling system (IC416). For the load for the fan, water pump frequency control motor, due to the working characteristics of the load to determine its constant torque operating range of 25~50Hz, there is no constant power range, therefore, according to user requirements to change from the fan cooling (IC411).

The structure and installation type of this series of motors are IMB3 (horizontal with feet, end cover without flange), IMB35 (horizontal base with feet, end cover with flange),IMV1 (vertical base without feet, end cover with flange) in accordance with GB997 and IEC60034-7 "Motor Structure and Installation Type Code".

Scope of use

This series of motors can be used to drive all kinds of general machinery such as compressors, fans, water pumps, cutting machine tools, transportation machinery and other mechanical equipment, in the mining, machinery, petrochemical industry, power plants and other industrial and mining enterprises as a prime mover.

Structure description

The motor base and end cover are made of high-strength cast iron, and the stator is of external press-fit structure. The stator winding adopts round copper wire loose embedded soft winding. Class F insulating material is adopted, the winding end is fixed with special binding process, which is firm and reliable. The whole stator is treated with vacuum pressure impregnated class F solvent-free paint (VPI). As a result, the motor has excellent and reliable insulation performance, moisture resistance and impact resistance.

The squirrel cage rotor of this series of motors adopts cast aluminum rotor, which is reliable in operation; the bearing is rolling bearing, and the basic type of protection grade is IP54. For example, when the motor has a higher protection level, the protection level of the bearing is also increased.

H180~355 motors are equipped with non-stop oil filling and oil discharge devices, and special oil filling tools can be used for non-stop oil filling and oil discharge.

The main outlet box is of sealed structure, and the protection level is consistent with that of the motor. The main outlet box is generally installed on the top of the motor base, and can also be installed on the side of the base according to user needs. There is a separate ground terminal in the outlet box.

Starting of squirrel cage asynchronous motor (YSP series)

The rotor of squirrel cage asynchronous motor adopts advanced calculation technology to calculate the starting temperature rise and stress of the squirrel cage rotor, so as to prevent the motor from being damaged early due to the heavy starting load. It is suggested that the user check:(1) the moment of inertia of the rotating part of the driven mechanical equipment (after conversion to the motor speed) should not exceed the value of [load J] in the technical data sheet;(2) The user's power grid shall ensure that the motor terminal voltage during the starting process of the motor is not less than 85% of the rated voltage;(3) The resistance torque characteristics of the driven machinery are the resistance torque characteristics of water pumps and fans.

Under the above conditions, the motor is allowed to start twice continuously in the actual cold state, and the motor is naturally stopped between two starts; or it is started once in the hot state of the motor. Restarting the motor beyond the above limits shall be after 1 hour of shutdown.

If the moment of inertia of the mechanical rotating part of the motor drive exceeds the [load J] value in the technical data sheet, or the motor is required to be started frequently, or the motor may be started with heavy load, please contact our company in advance for special design to ensure the reliable starting of the motor.