HKM / HKMF — high-voltage squirrel-cage induction motors with air-to-water cooling up to 35 MW, 15 kV
HKM and HKMF are the most powerful series of high-voltage squirrel-cage induction motors from the manufacturer, up to 35 000 kW at voltage up to 15 kV. The motors are enclosed, with an air-to-water heat exchanger on the frame. They drive large pumps, fans and compressors at thermal and nuclear power plants and oil and gas facilities.
- Power
- up to 35 000 kW
- Voltage
- up to 15 kV
- Speed
- up to 3600 rpm (with VFD)
- IEC frame size
- 355–1400
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
The internal motor air circulates in a closed circuit and gives up heat to water in the heat exchanger. Water carries away more heat than outside air, so more power can be taken from the same active volume than with an air-to-air scheme. HKM is cooled per IC81W (TEAWC), HKMF per IC86W with additional forced ventilation. The series is made at the manufacturer's plant in Preding and Weiz, which belongs to the Voith group. On site a cooling water circuit must be brought to the motor, and this is the first thing checked when designing a replacement.
From a frequency converter the motor accelerates to 3600 rpm. IEC frame sizes are from 355 to 1400. The motor can be started directly from the grid, through a soft starter or from a VFD for voltage up to 15 kV. Standard mounting arrangements are IM B3 (IM1001) and IM V1 (IM3011), special ones on request. Degree of protection up to IP55, insulation class F or H.
The high-voltage winding is wound from formed coils and pressure-impregnated on an automated line. The coils are made with high precision from special insulating materials, and the impregnation technology is designed for long winding life. High-voltage induction motors are built to order for voltages from 1 to 15 kV. The motors are built to IEC 60034 or NEMA MG1. For hazardous areas, versions with ATEX and IECEx certification and protection types Ex e and Ex p are available. Marine versions and versions for nuclear power plants are also available.
For nuclear plants the motors are qualified under test programs stricter than the requirements of KTA 3504, with LOCA and ANLE modes. The windings withstand irradiation up to 200 kGy. At thermal plants HKM and HKMF drive boiler feed pumps, main circulation and condensate pumps, forced-draft fans, induced-draft fans and coal mills. In industry these are air separation unit compressors, gas pipeline and LNG compressors, and extruders.
For a motor replacement the request should state the power and voltage, speed, starting method, mounting arrangement, connection dimensions and cooling water parameters. If the machine runs from a VFD, add the converter data. For a hazardous area or a nuclear plant, the protection type or qualification program is also needed.
Technical specifications
| Power | up to 35 000 kW |
|---|---|
| Voltage | up to 15 kV |
| Speed | up to 3600 rpm (with VFD) |
| IEC frame size | 355–1400 |
| Cooling | HKM — IC81W (TEAWC); HKMF — IC86W with additional ventilation |
| Starting | direct (DOL), soft starter, VFD |
| Degree of protection | up to IP55 |
| Insulation | class F or H |
| Mounting | IM B3 (IM1001), IM V1 (IM3011) |
| Standards | IEC 60034, NEMA MG1 |
| Special versions | explosion protection ATEX/IECEx (Ex e, Ex p), marine, for nuclear plants |
Request a price and lead time
HKM / HKMF — high-voltage squirrel-cage induction motors with air-to-water cooling up to 35 MW, 15 kV. 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 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 power and voltage do the HKM and HKMF motors have?
Up to 35 000 kW at voltage up to 15 kV. From a frequency converter the motor runs up to 3600 rpm.
How do the HKM and HKMF versions differ?
In the cooling scheme. HKM is cooled per IC81W (TEAWC), HKMF per IC86W with additional ventilation.
Are the motors suitable for nuclear plants and hazardous areas?
Yes, there are versions with ATEX and IECEx certification (Ex e, Ex p) and versions for nuclear power plants. Qualification tests exceed the requirements of KTA 3504, and the windings withstand irradiation up to 200 kGy.
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