W60 WPII LV — stock low-voltage induction motors 460 V, 250–900 hp
Country: Brazil · Model: W60 WPII LV
W60 WPII LV are horizontal three-phase induction motors of 250–900 hp at 460 V and 60 Hz, two-pole, 3600 rpm. The WPII (IP24) version is protected against weather, with NEMA frame size 5010/11. This is the low-voltage part of the stock programme for the American market, so the mains frequency is checked before purchase.
- Power
- 250–900 hp
- Voltage
- 460 V
- Frequency
- 60 Hz
- Rotational speed
- 3600 rpm (2 poles)
Technical specifications
| Power | 250–900 hp |
|---|---|
| Voltage | 460 V |
| Frequency | 60 Hz |
| Rotational speed | 3600 rpm (2 poles) |
| NEMA frame size | 5010/11 |
| Version | WPII (IP24) |
| Bearings | rolling 6218, insulated non-drive end |
| Insulation | VPI impregnation; temperature rise class B at SF 1.00, class F at SF 1.15 |
| Efficiency | NEMA Premium |
| Vibration | per API 541 |
| Noise level | 85 dB(A) |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The design is unified with the W60 medium-voltage machines. The stator and rotor cores are made of laminations with C5 coating, and the winding is impregnated using VPI technology. The temperature rise corresponds to class B at service factor 1.00 and class F at 1.15. Efficiency is at NEMA Premium level, vibration is within API 541, and noise is 85 dB(A). Unlike medium-voltage motors with sleeve bearings, here there are 6218 rolling bearings with an insulated non-drive-end bearing. The shaft is AISI 4140 steel, the air inlet has stainless steel screens and filters, and as standard the motor has three-wire Pt-100 sensors, two per phase and one per bearing, a 110/230 V heater and a main terminal box that rotates in 90° steps. Two-pole machines are designed for one direction of rotation. Installation is permitted in safe areas and in Class I, Div. 2, Gr. A, B, C and D, T3 zones per CSA.
How to choose
Power and voltage are fixed in the item, so the choice is between versions with a clockwise or counter-clockwise rotation fan. For starting from a frequency converter, the control range is 10:1 at variable torque (class B temperature rise) and 2:1 at constant torque (class F temperature rise). Service factor 1.15 applies with direct starting in a safe area. Modifications are possible from stock, for example changing the mounting from F1 to F2, a terminal block, insulation of the drive-end bearing or replacement of the nameplate. If you need a voltage of 2300/4000 V or a power of 250–2250 hp, look at the medium-voltage item of the same line.
Request a price and lead time
W60 WPII LV — stock low-voltage induction motors 460 V, 250–900 hp. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What are the voltage and frequency of the W60 WPII LV motor?
460 V and 60 Hz, so in a network with a different frequency the operating mode must be assessed separately or a frequency converter used.
What protection degree does the WPII version have?
IP24, protected against weather. Stainless steel screens and filters are installed at the air inlet.
Can W60 WPII LV be started from a frequency converter?
Yes, the control range is 10:1 at variable torque and 2:1 at constant torque. The motor is also suitable for direct starting.
What sensors are fitted in the W60 WPII LV motor?
Three-wire Pt-100, two per phase and one per bearing. There is also a 110/230 V heater.
What are the noise and vibration levels of W60 WPII LV?
Noise is 85 dB(A), vibration is within API 541 levels. Efficiency corresponds to NEMA Premium.
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Need a price, lead time or replacement?
Send us a request and we will confirm the configuration, lead time and delivery terms. We reply by email.