STAMFORD S7 LV Water-Cooled — low-voltage water-cooled generator 1425–2644 kVA
Country: United Kingdom · Model: S7 LV Water-Cooled
The water-cooled low-voltage generator S7 for 1150–2644 kVA, 380–690 V. The main version gives 1425–2200 kVA at 50 Hz and 1781–2644 kVA at 60 Hz, with four poles and 1500/1800 rpm. The built-in air-to-water cooler is needed where the volume of cooling air is limited, in particular on ships.
- Output 50 Hz
- 1425–2200 kVA
- Output 60 Hz
- 1781–2644 kVA
- Total range
- 1150–2644 kVA
- Voltage
- 380–690 V
Technical specifications
| Output 50 Hz | 1425–2200 kVA |
|---|---|
| Output 60 Hz | 1781–2644 kVA |
| Total range | 1150–2644 kVA |
| Voltage | 380–690 V |
| Number of poles | 4 |
| Cooling | air-to-water (water cooler on anti-vibration mounts) |
| Bearings | rolling or sleeve |
| Protection | IP23–IP44, IP54 terminal box |
| Insulation | class H |
| Overload | 110 % for 1 h in every 12 h (ISO 8528) |
| Short-circuit current | three times rated |
| AVR | MX322, VITA 05 |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The cooler sits on anti-vibration mounts, which increases resistance to ship vibration. The bearings are rolling or sleeve, the latter in the two-bearing version. Class H insulation is standard. The marine ratings are given for temperature rises of classes B (70 °C), F (90 °C) and H (110 °C) at an ambient of 50 °C and an inlet water temperature of 38 °C, and different windings are used for 380–480 V and 660–690 V (312, 26, 28). An overload of 110 % is permitted for one hour in every twelve under ISO 8528, and the short-circuit current is three times rated. The protection ranges from IP23 to IP44, the terminal box is IP54, and there are power take-off modes from the engine (PTO) and propeller drive modes (PTI). The regulators are the MX322 or the digital VITA 05, the SAE adaptors are 0/00, and a separate power factor regulator PFC3 is available.
How to choose
Water cooling is chosen when there is little air in the engine room. The air-cooled S7 LV is designed for higher outputs, while this version gives 1425–2200 kVA at 50 Hz. For marine diesel generators, shaft generators and offshore platforms it suits by design, and the PTO and PTI modes also make operation from the main engine possible.
Request a price and lead time
STAMFORD S7 LV Water-Cooled — low-voltage water-cooled generator 1425–2644 kVA. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What output does the water-cooled S7 LV have?
The main version gives 1425–2200 kVA at 50 Hz and 1781–2644 kVA at 60 Hz. The total range is 1150–2644 kVA at 380–690 V.
Why is the cooler on anti-vibration mounts?
This increases resistance to vibration in ship conditions. The cooler is built in and works on the air-to-water principle.
What overload does this generator withstand?
110 % for one hour in every twelve under ISO 8528. The short-circuit current is three times rated.
What protection rating does the S7 LV Water-Cooled have?
From IP23 to IP44, with an IP54 terminal box. The version meets the requirements of SOLAS and classification societies.
Which bearings can be chosen?
Rolling or sleeve. Sleeve bearings come in the two-bearing version.
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Need a price, lead time or replacement?
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