Medium-speed high-voltage permanent magnet synchronous motors 6–10 kV, 220–15 000 kW
Medium-speed permanent magnet synchronous motors cover 220–15 000 kW at 6–10 kV and operate from a variable frequency drive. The main application is the adjustable drive of fans and pumps. The motor is 1–2 frame sizes smaller than an induction motor of the same rating and keeps efficiency above 92 % over a load range of 25–120 %.
- Voltage
- 6–10 kV
- Power
- 220–15 000 kW (cased version); 220–3000 kW (rib-cooled); 400–4000 kW (tubular)
- Speed
- 500–3000 rpm
- Supply frequency
- 5–100 Hz (from a VFD)
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
A rotor with permanent magnets draws no excitation current, so the power factor exceeds 0.96, and such a motor needs a lower-rated frequency converter. The energy efficiency class is IE4 and higher. The motors are built for 6000–10 000 V, speed 500–3000 rpm, supply frequency from the VFD 5–100 Hz.
The item combines three design versions. The cased version covers 220–15 000 kW with shaft height H355–800, cooling IC611, IC666 or IC81W and explosion protection Ex pxb, Ex pzc or Ex tb. The rib-cooled version has 220–3000 kW, H355–560, cooling IC411/IC416 and an Ex db flameproof enclosure, and is aimed at explosive gas and dust environments. The tubular version gives 400–4000 kW at shaft height H560–710, cooling IC511/IC516, Ex db. The rib-cooled and tubular versions with Ex db are convenient where a pressurised purge system for the enclosure is hard to arrange.
For all versions the degree of protection is up to IP66, mounting IMB3, IMB35 or IMV1. The manufacturer points to magnet stability, quality insulation, insulated bearings, vibration of not more than 1.5 mm/s and a noise level of not more than 85 dB(A). Insulated bearings are needed here precisely because of VFD supply, as they block the path of bearing currents. The motors are made to GB and IEC, with CCC and MA certificates.
Standard operating conditions provide an ambient air temperature from −20 to +40 °C, and from −40 to +60 °C on request. Humidity is up to 90 %, installation altitude up to 1000 m, and up to 5000 m on request. The extended temperature range is ordered for unheated rooms and open sites.
Fields of application are the oil and petrochemical industry, mining, metallurgy, power plants, pulp and paper production and ports. The item is of interest for energy-saving replacement of unregulated high-voltage induction motors of pumps and draught machines in auxiliary systems. In such a project a VFD is installed together with the motor, and the smaller frame size of the PMSM makes it easier to fit on the existing foundation. The wider working range with high efficiency is especially noticeable on pumps and fans, which run at partial load most of the time.
Technical specifications
| Voltage | 6–10 kV |
|---|---|
| Power | 220–15 000 kW (cased version); 220–3000 kW (rib-cooled); 400–4000 kW (tubular) |
| Speed | 500–3000 rpm |
| Supply frequency | 5–100 Hz (from a VFD) |
| Shaft height | H355–800 |
| Cooling | IC611/IC666/IC81W; IC411/IC416; IC511/IC516 |
| Efficiency | IE4 and higher; > 92 % over a load range of 25–120 % |
| Power factor | > 0.96 |
| Vibration / noise | ≤ 1.5 mm/s; ≤ 85 dB(A) |
| Degree of protection | up to IP66 |
| Explosion protection | Ex pxb, Ex pzc, Ex tb; Ex db |
| Standards / certificates | GB, IEC; CCC, MA |
Request a price and lead time
Medium-speed high-voltage permanent magnet synchronous motors 6–10 kV, 220–15 000 kW. 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
Which versions are included in the medium-speed PMSM series?
The cased version of 220–15 000 kW, the rib-cooled version of 220–3000 kW with Ex db and the tubular version of 400–4000 kW. The voltage of all versions is 6000–10 000 V.
What efficiency and power factor do these motors have?
Efficiency is above 92 % over a load range of 25–120 %, class IE4 and higher. The power factor exceeds 0.96.
In what climatic conditions do the motors operate?
As standard at a temperature from −20 to +40 °C, and from −40 to +60 °C on request. Installation altitude is up to 1000 m, and up to 5000 m on request.
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