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AC Induction

YVP Series

YVP Series Variable-Frequency Three-Phase Induction Motor

An induction motor designed for the drive rather than adapted to it — constant torque from 5 to 50 Hz, constant power from 50 to 100 Hz, with its own separately driven cooling fan.

0.55–560 kWIC416 forced coolingEncoder option
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YVP variable-frequency induction motor with a separately driven cooling fan

YVP is designed to work with an induction-motor drive for stepless speed control. It runs constant torque across 5–50 Hz and constant power across 50–100 Hz, with smooth running and low torque ripple. Encoder and non-encoder versions are built; the encoder version starts more smoothly and holds speed more precisely.

The detail that matters most is the cooling. A standard shaft-mounted fan slows down with the motor, so a general-purpose machine run slowly on a drive cools itself progressively worse exactly when it may still be delivering full torque. YVP carries a separately driven fan (IC416), so cooling is the same at 5 Hz as at 50 Hz.

It replaces YCT electromagnetic-slip machines on stepless speed duty, with higher efficiency and better control accuracy.

Core specifications

ParameterValue
Frame sizeH80 – H400 mm
Power range0.55 – 560 kW
Constant-torque range5 – 50 Hz
Constant-power range50 – 100 Hz
Voltage & frequency380 V, 50 Hz (custom on request)
Protection degreeIP54 / IP55
Thermal class155 (F)
CoolingIC416 (separately driven fan)
FeedbackWith or without encoder

Typical applications

  • Fans, pumps and hydraulic power packs
  • Plastics machinery, paper machinery, rubber machinery
  • Any stepless speed application replacing a YCT electromagnetic-slip drive

Selection guide

Below about half speed a shaft-mounted fan stops moving useful air while the motor may still be at full torque. That is the failure mode behind a lot of "the drive cooked the motor" stories. YVP has separate forced cooling, which is what makes the low end of the range usable.
Sensorless is enough for fan and pump duty. Specify an encoder where the process needs tight speed holding at low frequency or defined torque during starting.
YVP keeps an induction rotor, which means lower capital cost and no demagnetisation failure mode. TYP is more efficient across the range, particularly at part load. Long-running variable-speed duty tends to favour TYP; intermittent or cost-sensitive duty tends to favour YVP.

FAQ

Datasheets, dimension drawings and certification copies are issued on request — tell us the rating and we will send the documents for that specific model.

Downloads

DatasheetPDF · 2.0 MBDownload
Installation & maintenance manualInstallation, commissioning and servicingRequest
CertificationCertificates and test reportsRequest

Certificates and test reports are issued against the specific model and rating rather than the series, so we send the ones that apply to your order. Tell us the rating and the market and we will send them.

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Request a quote — YVP Series

Tell us the rating, quantity and application and an engineer will come back with a specification, the documents for that model, and a price.

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