High-speed synchronous motors 6–15.75 kV, 3–150 MW (including 105 MW, motor/generator mode)
The high-speed synchronous motors belong to machines of large unit rating, from 3000 to 150 000 kW at 6–15.75 kV. They drive centrifugal compressors, blast furnace blowers, sinter exhausters, air separation units and test stands. The item includes the flagship 105 MW class version for dual-mode operation as a motor and a generator.
- Voltage
- 6–15.75 kV
- Power
- 3000–150 000 kW; 105 MW version — 30 000–150 000 kW
- Speed
- 1000–3600 rpm (1500–3600 rpm for 105 MW)
- Cooling
- IC81W, IC86W
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
The standard motors have a box-type design with a top-mounted air-to-water cooler. The stator winding is insulated with an epoxy-anhydride system, the rotor is made of forged alloy steel, and the shaft turns in end-shield sleeve bearings. Speed is 1000–3600 rpm, voltage 6000–15 750 V, cooling IC81W or IC86W. Degree of protection is from IP21 to IP56, mounting IMB3. The top position of the cooler frees space near the foundation, and the heat exchanger is serviced without removing the machine from the plate.
For explosive zones, Ex ec, Ex pxb and Ex pzc versions are provided. The manufacturer's page mentions a double-strip seal and a large outer-diameter rotor suitable for zones 1 and 2. The machines are made to GB, IEC and EN and certified to CCC, IECEx and CE. Standard installation altitude is up to 1000 m, and up to 5000 m above sea level on request. Ex pxb and Ex pzc mean an enclosure pressurised with purge air or inert gas, while Ex ec belongs to increased-safety versions without sparking in normal operation.
The "105 MW" version works both as a motor and as a generator, with high efficiency and low vibration. It is fitted to large compressors and expanders, and the manufacturer links it with new energy technologies, in particular with compressed air energy storage. In such a system the machine drives the compressor in hours of surplus energy, and during discharge works as a generator from the expander. The parameters of this version are 30 000–150 000 kW, 1500–3600 rpm, 6000–15 750 V, cooling IC81W, end-shield or pedestal bearings.
A synchronous machine keeps the power factor at a set level and takes part in reactive power regulation. For a works with a blast furnace blower this noticeably relieves the internal network. Such machines are usually started from a thyristor starting device or a frequency converter. Air separation unit compressors and blast furnace blowers run around the clock, so the motor is required to run continuously for long periods with rare stops.
Applications are metallurgical works with blast furnace blowers, chemical and petrochemical plants, gas transmission systems, air separation units and energy storage power plants. At compressor stations of gas transmission systems a high-speed synchronous motor works as the electric drive of a centrifugal compressor.
Technical specifications
| Voltage | 6–15.75 kV |
|---|---|
| Power | 3000–150 000 kW; 105 MW version — 30 000–150 000 kW |
| Speed | 1000–3600 rpm (1500–3600 rpm for 105 MW) |
| Cooling | IC81W, IC86W |
| Insulation | epoxy-anhydride system |
| Degree of protection | IP21–IP56 |
| Explosion protection | Ex ec, Ex pxb, Ex pzc |
| Rotor | forged alloy steel |
| Bearings | end-shield or pedestal sleeve |
| Mounting | IMB3 |
| Standards | GB, IEC, EN |
| Certificates | CCC, IECEx, CE |
Request a price and lead time
High-speed synchronous motors 6–15.75 kV, 3–150 MW (including 105 MW, motor/generator mode). We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Customs codes
| UKTZED (Ukraine) | 8501 53 81 00 8501 53 94 00 8501 53 99 00 |
|---|---|
| HS, 6 digits | 8501 53 |
| CN (EU) | 8501 53 81 8501 53 94 8501 53 99 |
| HTSUS (USA) | 8501 53 80 40 8501 53 80 60 |
| China customs tariff | 8501 53 00 00 |
Codes are for reference: the final code is determined at declaration for the specific model.
Questions and answers
What power and voltage range do the high-speed synchronous motors have?
The standard machines cover 3000–150 000 kW at 6000–15 750 V and a speed of 1000–3600 rpm. Cooling is IC81W or IC86W.
What distinguishes the 105 MW version?
It works both as a motor and as a generator, so it suits compressors, expanders and compressed air energy storage systems. The range is 30 000–150 000 kW at 1500–3600 rpm.
What are the insulation and rotor design?
The stator has an epoxy-anhydride insulation system, the rotor is made of forged alloy steel. The sleeve bearings are end-shield or pedestal, degree of protection IP21–IP56.
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