TEFC Severe Duty stock medium-voltage induction motors 2300/4160 V, 150–800 hp
Medium-voltage induction motors in the totally enclosed fan-cooled TEFC Severe Duty design, rated 150–800 hp (110–590 kW) at 2300/4160 V and 60 Hz. They are used at general industrial sites, in water supply and wastewater, mining and metallurgy, power generation, oil and gas and pulp and paper, and in cement and aggregates production.
- Power
- 150–800 hp (110–590 kW)
- Voltage
- 2300/4160 V
- Frequency
- 60 Hz
- Speed
- 3600, 1800, 1200 rpm (2, 4, 6 poles)
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
The series covers W22MV and W50MV machines with speeds of 3600, 1800 and 1200 rpm (2, 4 and 6 poles) in NEMA frame sizes from L447/9T to 6808/09, including 5009/10, 5809/10 and 6806/07. The motors belong to the stock range for the American market and are designed to operate at altitudes up to 3300 ft at an ambient temperature of 40 °C. Full-load efficiency per catalog is from 93.0 to 95.4 %, and for ratings from 250 hp it meets NEMA Premium level.
The winding is class F insulated and VPI impregnated. Temperature rise corresponds to class B at service factor 1.00 and class F at 1.15, and with direct starting the service factor is 1.15. The rotor is aluminum, with copper bars in some frame sizes, duty S1, ingress protection IP55. Mounting is F1 and for ratings from 250 hp it can be changed to F2. Grease-lubricated ball bearings have an L10 life of 100 000 h and automatic grease relief. Grounding terminals are on both sides of the frame, paint is RAL 5009. The package includes Pt-100 sensors (two per phase and one per bearing), a 120 V heater, pads for vibration sensors and holes for dowel pins.
The Severe Duty version meets the main requirements of IEEE 841. These include vibration level per IEEE 841, extended grease tubes and stainless steel drains, INPRO/SEAL seals on both sides, foot flatness of 0.005 in, tropical treatment and test reports per IEEE 841.
The motors operate from a VFD without derating over a 10:1 range at variable torque and 2:1 at constant torque. For this the non-drive-end bearing is insulated and a grounding brush is fitted on the shaft. For hazardous areas there is a CSA Class I, Div. 2, Gr. A, B, C and D, T3 certificate with a non-sparking fan.
The motors are modified for the site by replacing nameplates and fitting an encoder, C or D flanges, forced ventilation or an enlarged NEMA Type II terminal box. SSW7000 soft starters are matched to them for starting.
Technical specifications
| Power | 150–800 hp (110–590 kW) |
|---|---|
| Voltage | 2300/4160 V |
| Frequency | 60 Hz |
| Speed | 3600, 1800, 1200 rpm (2, 4, 6 poles) |
| NEMA frame sizes | L447/9T, 5009/10, 5809/10, 6806/07, 6808/09 |
| Design | TEFC, IP55 |
| Insulation | class F, VPI; class B rise at SF 1.00 |
| Full-load efficiency | 93.0–95.4 % |
| Bearings | grease-lubricated ball, L10 life 100 000 h |
| Explosion protection | CSA Class I, Div. 2, Gr. A, B, C, D, T3 |
Request a price and lead time
TEFC Severe Duty stock medium-voltage induction motors 2300/4160 V, 150–800 hp. 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 |
|---|---|
| HS, 6 digits | 8501 53 |
| CN (EU) | 8501 53 81 8501 53 94 |
| HTSUS (USA) | 8501 53 40 00 8501 53 80 00 |
| 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 voltage are the TEFC Severe Duty motors rated for?
The motors are built for 2300/4160 V and 60 Hz. Power is 150–800 hp, that is 110–590 kW.
Do the motors meet IEEE 841 requirements?
The Severe Duty version meets the main requirements of IEEE 841, in particular for vibration, INPRO/SEAL seals and test reports. Foot flatness is 0.005 in.
Can these motors be used with a VFD?
Yes, they operate from a VFD without derating over a 10:1 range at variable torque and 2:1 at constant torque. For this the non-drive-end bearing is insulated and the shaft has a grounding brush.
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