SRS 315/400 — high-speed solid rotor induction motor 300 kW – 2 MW
SRS 315/400 is a high-speed solid rotor induction motor rated from 300 kW to over 2 MW. It runs at 6000–20,000 rpm and connects to a blower, compressor or pump without a gearbox. Standard frame sizes are 315 and 400.
- Power
- 300 kW – over 2 MW (with medium-voltage technology)
- Speed
- 6000–20,000 rpm
- Rotor type
- solid rotor, induction
- Frame sizes
- 315 and 400
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
The manufacturer's high-speed induction machines are built on solid rotor technology. The rotor is made from a single steel forging rather than assembled from sheets of electrical steel. If needed it is supplemented with conductive short-circuit rings or a squirrel cage. This design preserves mechanical integrity and balance at speeds where a laminated rotor can no longer cope. The machines fill the niche between small high-speed motors up to 200 kW and multi-megawatt systems. The technology grew out of research at Lappeenranta University of Technology (LUT), begun in 1988.
The power range is from 300 kW to over 2 MW, and the upper part of the range is built with medium-voltage technology. The speed is 6000–20,000 rpm. The motor is coupled to the driven machine without a gearbox, so system efficiency is higher and the machine itself is more compact and lighter than a traditional one. Mass and footprint are up to 50 % smaller. The standard line has two frame sizes, 315 and 400. The shaft end is adapted to the customer, with foot or flange mounting.
Cooling is modular. A closed water-to-air circuit with a heat exchanger or open cooling can be chosen. A fan is mounted on the shaft and, if needed, separate electric fans are added. A standalone machine is connected to the driven machine through a coupling, for example a disc coupling. In the semi-integrated version the impeller of a compressor, turbine or pump sits directly on the motor shaft, and the bearings and rotor dynamics are designed for the task. Fully integrated machines are designed for a specific partner product.
The manufacturer has supplied more than 1000 high-speed machines. Since 1997, when the first prototype was delivered, not a single rotor failure has been recorded, and the total industrial operating time exceeds 10 million hours. More than 900 motors went to vacuum blowers at paper mills, and more than 200 machines with a water jacket cooling work in marine applications. The manufacturer's machine drives the MAN Energy electric turbo blower (ETB) in exhaust gas recirculation systems of marine two-stroke engines to IMO Tier III requirements.
Typical applications: blowers and vacuum compressors at pulp and paper mills and treatment plants, compressors, pumps, test stands, megawatt-class heat pumps, flywheel energy storage. Multi-megawatt hermetic and hydrogen compressors are considered by the manufacturer individually.
Technical specifications
| Power | 300 kW – over 2 MW (with medium-voltage technology) |
|---|---|
| Speed | 6000–20,000 rpm |
| Rotor type | solid rotor, induction |
| Frame sizes | 315 and 400 |
| Mounting | foot or flange |
| Cooling | closed water-to-air via heat exchanger or open; shaft-mounted fan and/or separate electric fans |
| Versions | standalone machine; semi-integrated; fully integrated |
| Experience | more than 1000 machines, zero rotor failures since 1997 |
Request a price and lead time
SRS 315/400 — high-speed solid rotor induction motor 300 kW – 2 MW. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Customs codes
| UKTZED (Ukraine) | 8501 53 99 00 8501 53 94 00 8501 53 81 00 |
|---|---|
| HS, 6 digits | 8501 53 |
| CN (EU) | 8501 53 99 8501 53 94 8501 53 81 |
| HTSUS (USA) | 8501 53 80 40 8501 53 40 00 |
| China customs tariff | 8501 53 00 90 |
Codes are for reference: the final code is determined at declaration for the specific model.
Questions and answers
What power and speed range do SRS motors have?
From 300 kW to over 2 MW at a speed of 6000–20,000 rpm. The upper part of the range is built for medium voltage.
What frame sizes and mounting methods are provided?
The standard line has frame sizes 315 and 400, with foot or flange mounting. The shaft end is adapted to the customer.
What machines is the motor suitable for?
Blowers and vacuum compressors, compressors, pumps, test stands, megawatt-class heat pumps and flywheel energy storage. The impeller can be mounted directly on the motor shaft.
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