TEAAC/TEWAC high-voltage induction motors with air-to-air and air-to-water coolers up to 13.8 kV, up to 40 MW
TEAAC and TEWAC are two series of large high-voltage squirrel-cage induction motors for 3–13.8 kV, with a heat exchanger mounted on a totally enclosed frame. TEAAC with an air-to-air cooler covers 160–20 000 kW, while TEWAC with an air-to-water cooler reaches 40 000 kW. The series are intended for pump, fan and compressor drives, including unit auxiliaries of power plants.
- Voltage
- 3–13.8 kV
- Power
- 160–20 000 kW (TEAAC); 280–40 000 kW (TEWAC)
- Shaft height
- H355–1400
- Speed
- 300–3600 rpm
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
The design is modular. The basis is a totally enclosed motor frame with a heat exchanger mounted on top, and the internal air circuit passes through the active part and the cooler. In TEAAC (Totally Enclosed Air-to-Air Cooled) the heat is removed by external air, with cooling methods IC611, IC616 and IC666. TEWAC (Totally Enclosed Water-to-Air Cooled) has an air-to-water cooler according to schemes IC81W or IC86W. Water removes more heat, so this version is used to build machines of extra-large rating.
The power ranges overlap: TEAAC ends at 20 000 kW, while TEWAC starts from 280 kW. Shaft height is H355–1400, speed 300–3600 rpm, voltage 3000–13 800 V. The motors run from a 50/60 Hz supply or from a frequency converter. The rotor is made with a cast aluminium cage or copper bars. Degree of protection is up to IP66, mounting arrangements IMB3, IMB35 and IMV1. The standard version is designed for altitudes up to 1000 m above sea level, and up to 5000 m on request.
For explosive atmospheres the range includes Ex ec (increased safety type "e"), Ex pxb and Ex pzc with a pressurised enclosure, and Ex tb for dust zones. The manufacturer's page mentions a double-strip seal and a large outer-diameter rotor suitable for zones 1 and 2. The design complies with GB, IEC, NEMA, BS, API and EN, and the motors hold IECEx, ATEX, CCC, CSA and UL certificates.
The manufacturer points to higher efficiency, a lower shaft height at higher rating, reduced noise and convenient maintenance. The motors drive fans, pumps, compressors and other machinery in the oil and gas, chemical and coal industries, metallurgy, ports and mechanical engineering. In power plants the series work in unit auxiliary drives, that is, feed, circulation and network pumps, induced-draught fans and blowers. The modular design is also convenient during repair, because the cooler is removed separately from the active part without dismantling the stator.
By machine class, TEAAC and TEWAC correspond to large 6–10 kV induction motors with a closed ventilation system and built-in coolers, which operate at domestic thermal power plants and combined heat and power plants.
Technical specifications
| Voltage | 3–13.8 kV |
|---|---|
| Power | 160–20 000 kW (TEAAC); 280–40 000 kW (TEWAC) |
| Shaft height | H355–1400 |
| Speed | 300–3600 rpm |
| Cooling | IC611/IC616/IC666 (air-to-air); IC81W/IC86W (air-to-water) |
| Frequency | 50/60 Hz or from a VFD |
| Degree of protection | up to IP66 |
| Explosion protection | Ex ec, Ex pxb, Ex pzc, Ex tb |
| Rotor | cast aluminium or copper bars |
| Standards | GB, IEC, NEMA, BS, API, EN |
| Certificates | IECEx, ATEX, CCC, CSA, UL |
Request a price and lead time
TEAAC/TEWAC high-voltage induction motors with air-to-air and air-to-water coolers up to 13.8 kV, up to 40 MW. 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 is the maximum power of the TEAAC and TEWAC series?
TEAAC is built for 160–20 000 kW, TEWAC for 280–40 000 kW. The voltage of both series is 3000–13 800 V.
How does TEWAC differ from TEAAC in cooling?
TEAAC is cooled by external air through an air-to-air cooler according to schemes IC611, IC616 or IC666. TEWAC has an air-to-water cooler IC81W or IC86W, which removes more heat.
Which explosion-protection versions are available?
Ex ec, Ex pxb, Ex pzc and Ex tb, with IECEx, ATEX, CCC, CSA and UL certificates. Degree of protection is up to IP66.
Similar equipment from other manufacturers
