S7 HV — high-voltage synchronous generator 10.5–11 kV
S7 HV (designation S7H1D) is the high-voltage version of the S7 generator, the only frame size in the S-Range family that combines low- and high-voltage machines in one frame.
- Voltage
- 10.5 and 11 kV, 50 Hz
- Rotational speed
- 1500 rpm (4 poles)
- S7 series power
- up to 2800 kVA (50 Hz)
- Winding pitch
- 5/6
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
S7 HV (designation S7H1D) is the high-voltage version of the S7 generator, the only frame size in the S-Range family that combines low- and high-voltage machines in one frame. The generator is produced for voltages of 10.5 kV and 11 kV at 50 Hz and a rotational speed of 1500 rpm (four poles), and is intended for generator sets connected directly to medium-voltage distribution networks without a step-up transformer. The overall voltage range of the S7 series according to the website of the manufacturer is 380–11,000 V, and the series power is up to 2800 kVA at 50 Hz. The generator is built on a brushless scheme with a rotating field and excitation from a permanent-magnet pilot exciter (PMG). The high-voltage windings of the S7 are made with a 5/6 pitch (for low-voltage ones, 2/3), insulation class H. The new design with cores of optimised specific output and the CoreCooling air-cooling system provides an improved thermal regime and higher specific output. The voltage regulator is digital VITA 05 or analogue MX341; the generator is mounted on flexible feet for convenient integration into the frame. The generator is built to the requirements of BS 5000 part 3 and international standards. Standard protection is IP23; the manufacturer warns that outdoor installation requires additional measures, and IP44 and an IP44 terminal box are available as options. Design ambient conditions according to the manual are temperature from −15 to +40 °C, relative humidity below 70 %, altitude up to 1000 m; under other conditions the manufacturer recalculates the rated data. The sound level of the running generator can reach 110 dB(A). Options: two-bearing version, SAE 00 adapter, thermistors and winding temperature sensors (RTD), three-phase measurement, anti-condensation heaters. Applications: biogas and natural gas power plants feeding power into the 10–11 kV network, industrial power stations, oil and gas facilities, primary and standby supply of large consumers. An example from the manufacturer materials is S7 HV generators for a biogas station in Shenzhen with power fed into the network. For servicing high-voltage machines during operation, the manufacturer recommends remote diagnostic and measurement systems.
Technical specifications
| Voltage | 10.5 and 11 kV, 50 Hz |
|---|---|
| Rotational speed | 1500 rpm (4 poles) |
| S7 series power | up to 2800 kVA (50 Hz) |
| Winding pitch | 5/6 |
| Excitation | PMG, brushless |
| Voltage regulator | VITA 05 / MX341 |
| Insulation | class H |
| Degree of protection | IP23 (standard), IP44 option |
| Conditions | −15…+40 °C, humidity < 70 %, altitude < 1000 m |
| Standard | BS 5000 part 3 |
Request a price and lead time
S7 HV — high-voltage synchronous generator 10.5–11 kV. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
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