Y / YKS / YKK High Voltage Motor

The Y, YKS and YKK series are high-voltage three-phase induction motors offering open-circuit air, air-to-water and air-to-air cooling, respectively, for industrial drive applications.
Product Overview
The Y, YKS and YKK series are medium-to-large high-voltage three-phase induction motors for industrial equipment such as pumps, fans and compressors. The catalog covers 10 kV models with frame sizes H450–H630.
The three series use different cooling arrangements. Y motors use open-circuit air cooling, YKS motors use an air-to-water heat exchanger, and YKK motors use an air-to-air heat exchanger. Enclosure protection depends on the selected series and configuration.
Select the motor according to the required output, speed, starting conditions, driven-load inertia and cooling facilities. Standard mounting is IM B3, with other arrangements subject to confirmation.
Before installation or replacement, verify the electrical ratings, shaft dimensions, foundation interfaces, overall size and maintenance space using the model-specific documentation.ration.
Electrical Specifications
ParameterSpecification
Product SeriesY / YKS / YKK
Motor TypeHigh-Voltage Three-Phase Induction Motor
Rated OutputY / YKS: 220–2240 kW; YKK: 200–1800 kW, based on the supplied technical tables
Rated Voltage10 kV; alternative voltages subject to technical confirmation
Rated FrequencyConfirm the nameplate rating; tabulated speeds are consistent with 50 Hz operation
Number of Poles2, 4, 6, 8, 10 or 12, depending on model
Rated SpeedApproximately 495–2989 rpm across the supplied tables; refer to the selected model
Rated CurrentRefer to the model-specific technical data
Efficiency ClassNot specified in the supplied pages
Rated EfficiencyRefer to the model-specific full-load efficiency
Power FactorRefer to the model-specific technical data
Winding ConnectionFollow the supplied terminal connection diagram
Rated DutyS1 — Continuous Duty
Mechanical Specifications
ParameterSpecification
Frame SizeH450, H500, H560 or H630
Mounting ArrangementStandard IM B3; other arrangements, including IM B35, subject to confirmation
Shaft Diameter90–180 mm, depending on frame size and pole count
Shaft Extension170–300 mm, depending on frame size and pole count
Key / Keyway DimensionsRefer to dimensions F and G in the model-specific drawing
Bearing ArrangementDepends on frame size and pole count; confirm against the supplied bearing schedule
Net WeightRefer to catalog-listed model weight; net weight basis to be confirmed
Overall DimensionsRefer to the series-specific dimensional drawing
Technical Specifications
Frequently Asked Questions

Provide the required power, voltage, frequency, speed, mounting arrangement and operating duty. Include the driven-load torque, inertia, starting method, site conditions and available cooling facilities.

Y motors use open-circuit air cooling. YKS motors use an air-to-water heat exchanger, while YKK motors use an air-to-air heat exchanger. Their enclosure protection and installation requirements differ.

Yes. The air-to-water heat exchanger requires a suitable cooling-water supply. Confirm the required flow, inlet temperature, pressure and water quality for the selected motor.

Its catalog-listed air-to-air cooling arrangement does not require cooling water for the heat exchanger. Adequate airflow and clearance around the motor must still be provided.

The catalog mentions alternative-voltage versions. Submit the required voltage and frequency for confirmation of availability, ratings and dimensions.