MJR/MJHR — synchronous generators with air-water cooler IC81W, up to 15 kV, up to 13,500 kVA
MJR/MJHR are closed-type synchronous generators with an air-to-water cooler.
- Power
- up to 13,500 kVA (announced: up to 12,000 kVA)
- Voltage
- up to 15,000 V (MJR — LV, MJHR — MV)
- Frequency
- 50/60 Hz
- Number of poles
- 4–12
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
MJR/MJHR are closed-type synchronous generators with an air-to-water cooler. The internal air circulates in a closed loop and is cooled by water (IC81W method), so the generator does not draw air from the room, is less contaminated, and is suitable for dusty, humid and noise-sensitive sites, while heat is removed into the station’s water-cooling system. MJR are low-voltage and MJHR medium-voltage machines. Parameters: power up to 13,500 kVA (series announcement: up to 12,000 kVA), voltage up to 15,000 V, frequency 50/60 Hz, 4–12 poles, frame sizes 315–1250, degree of protection IP44 (IP56 on request), ambient air temperature 0…+60 °C, cooling water temperature up to 40 °C. Standards IEC 60034-1, BS 4999-5000, NEMA MG 1.32. Compared with the open MJB/MJH series, the MJR/MJHR generator has a closed housing with a basic degree of protection IP44 instead of IP23 and a cooler mounted on the machine; the frame range 315–1250 and the pole count 4–12 are common to both series, while the maximum power of MJR/MJHR is somewhat lower because of the closed loop. A current transformer may be installed in the neutral for differential protection; vibration sensors and rotor earth-fault protection 64R are available for monitoring; the PMG pilot exciter is supplied on request. Applications: power stations and cogeneration plants, generators for steam and gas turbines. The item is an analog of low-power turbogenerators with closed air cooling and of gas-engine power station generators with water cooling.
Technical specifications
| Power | up to 13,500 kVA (announced: up to 12,000 kVA) |
|---|---|
| Voltage | up to 15,000 V (MJR — LV, MJHR — MV) |
| Frequency | 50/60 Hz |
| Number of poles | 4–12 |
| Frame size | 315–1250 |
| Cooling | IC81W, water up to 40 °C |
| Degree of protection | IP44 (up to IP56 on request) |
| Ambient temperature | 0…+60 °C |
| Standards | IEC 60034-1, BS 4999-5000, NEMA MG 1.32 |
Request a price and lead time
MJR/MJHR — synchronous generators with air-water cooler IC81W, up to 15 kV, up to 13,500 kVA. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
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