STAMFORD S7 LV — low-voltage synchronous generator 1000–3356 kVA (air-cooled)
Country: United Kingdom · Model: S7 LV
The air-cooled low-voltage brushless generator S7, a series range of 1000–3356 kVA. The main range is 1550–2800 kVA at 400 V and 50 Hz and 1894–3356 kVA at 480 V and 60 Hz, with four poles, 1500/1800 rpm and a voltage of 380–690 V. The K-core version gives up to 3600 kVA at 60 Hz.
- Output 50 Hz
- 1550–2800 kVA (400 V)
- Output 60 Hz
- 1894–3356 kVA (480 V); K-core version up to 3600 kVA
- Voltage
- 380–690 V
- Number of poles
- 4
Technical specifications
| Output 50 Hz | 1550–2800 kVA (400 V) |
|---|---|
| Output 60 Hz | 1894–3356 kVA (480 V); K-core version up to 3600 kVA |
| Voltage | 380–690 V |
| Number of poles | 4 |
| Winding pitch | 2/3 |
| Excitation | PMG |
| AVR | VITA 05 (standard), MX341, MX322; options DM110, DECS100, DECS150 |
| Insulation | class H |
| Protection | IP23; IP44 options, IP44 terminal box |
| Cooling | IC01, CoreCooling |
| SAE adaptors | 0, 00 or no adaptor |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The K-core version added about 300 kVA to the series, up to 2800 kVA at 50 Hz in class H. According to the manufacturer, K-core gives a 15 % higher power density and a 13 % lower mass. The cooling is CoreCooling air cooling (IC01), the excitation is PMG, the winding is wire with a 2/3 pitch, the insulation is class H and the basic protection is IP23. The standard regulator is the digital VITA 05 (±0.25 %, three-phase sensing); some versions have the analog MX341 and MX322, and the digital DM110, DECS100 and DECS150 are optional. Flexible feet simplify mounting on the generator set frame. Options include a two-bearing version (in the marine version also with sleeve bearings), IP44 and an IP44 terminal box, an SAE adaptor 00/0, RTDs and thermistors. The generator replaced the four-pole P7; the S7L1D version is industrial and the S7L1M is marine.
How to choose
For 1550–2800 kVA at 400 V this S7 LV is suitable, and the K-core version reaches up to 3600 kVA at 60 Hz. For ships and industrial sets with a limited volume of cooling air there is the S7 LV Water-Cooled with a water cooler. Lower in output is the S6 (810–1400 kVA). The high-voltage S7 versions for 10.5–11 kV are covered in a separate item.
Request a price and lead time
STAMFORD S7 LV — low-voltage synchronous generator 1000–3356 kVA (air-cooled). We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What output does the S7 LV have at 50 and 60 Hz?
1550–2800 kVA at 400 V and 50 Hz and 1894–3356 kVA at 480 V and 60 Hz. The K-core version reaches 3600 kVA at 60 Hz.
What does the K-core version give?
According to the manufacturer, a 15 % higher power density and a 13 % lower mass. It added about 300 kVA to the series.
Which voltage regulator is fitted in the S7 LV?
The digital VITA 05 with an accuracy of ±0.25 % as standard. Some versions have the MX341 and MX322, and the DM110, DECS100 and DECS150 are optional.
What protection rating does the S7 LV have?
The basic IP23. An IP44 version and an IP44 terminal box are optional.
Which generator did the S7 LV replace?
The four-pole P7. The S7L1D and S7L1M versions are intended for industrial and marine use respectively.
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