STAMFORD S4 — low-voltage synchronous generator 210–560 kVA
Country: United Kingdom · Model: S4
The low-voltage brushless generator S4 for sets of 210–560 kVA. In the Dedicated version it gives 260–450 kVA at 50 Hz and 325–563 kVA at 60 Hz (class H, 125/40 °C), with a voltage of 380–690 V and 1500/1800 rpm. For 450 kVA a new core length has appeared with an optimized power density.
- Output 50 Hz
- 260–450 kVA (class H, 400 V)
- Output 60 Hz
- 325–563 kVA (480 V)
- Range
- 210–560 kVA
- Voltage
- 380–690 V
Technical specifications
| Output 50 Hz | 260–450 kVA (class H, 400 V) |
|---|---|
| Output 60 Hz | 325–563 kVA (480 V) |
| Range | 210–560 kVA |
| Voltage | 380–690 V |
| Number of poles | 4 |
| Winding pitch | 2/3 |
| Excitation | self-excited; option — PMG |
| AVR | AS440 (standard); DECS150, DM110, MX321, MX341, VITA 05 |
| Insulation | class H |
| Protection | IP23 |
| SAE adaptors | 0, 0.5, 1, 2 |
| Cooling | CoreCooling |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The CoreCooling system is patented; it improves the thermal condition of the windings and gives more power in the same frame size. The winding is wire, with a 2/3 pitch, class H insulation and IP23 protection; as standard it is self-excited with the analog AS440 and two-phase voltage sensing. Optionally fitted are a PMG sub-exciter, the regulators MX321, MX341, DECS150 and DM110, the digital VITA 05, three-phase sensing and the UL version. The designations are S4L1D (Dedicated), S4L1S (Special) and S4L1M (Marine). Adaptor feet allow a changeover between the S4 and S5 without modifying the frame, with SAE adaptors 0, 0.5, 1, 2. Factory options include an anti-condensation heater, a quadrature droop kit, RTD sensors, thermistors and a rotating diode failure detector.
How to choose
The Dedicated version is narrower than the full range of 210–560 kVA, so the limit is chosen by mains frequency, that is 260–450 kVA at 50 Hz or 325–563 kVA at 60 Hz. If less is needed, see the UC27 (75–312 kVA); if more, the S5 (450–937 kVA). For ships there is the S4L1M, and flexible feet make it easier to replace a generator of another make.
Request a price and lead time
STAMFORD S4 — low-voltage synchronous generator 210–560 kVA. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What output does the S4 generator have at 50 and 60 Hz?
260–450 kVA at 50 Hz and 400 V and 325–563 kVA at 60 Hz and 480 V. The full range of the series is 210–560 kVA.
What is CoreCooling in the S4?
A patented air cooling scheme. It improves the thermal condition of the windings, so more power is obtained in the same frame size.
What do the designations S4L1D, S4L1S and S4L1M mean?
D means Dedicated with increased power density, S means Special, and M means Marine, that is the marine version.
Which voltage regulators can be fitted to the S4?
The standard AS440, and optionally the DECS150, DM110, MX321, MX341 and the digital VITA 05.
Can the S4 be changed over to the S5 without modifying the frame?
Yes, adaptor feet are provided for this. SAE adaptors 0, 0.5, 1, 2, and single-bearing and two-bearing versions.
Similar products
3.ZKELow-voltage IE3 induction motor, 18.5–1000 kW
2.RZKITLow-voltage induction motor for operation from a frequency converter, 18.5–2500 kW
HAW12 / HAW13 / HAW20 / HAW22 / HAW29Drilling induction motors 600–2000 hp, 575 V, for variable-frequency drive
IMfinity FLSESThree-phase LV induction motors in cast-iron frame IE3/IE4, 0.75–900 kWREQUEST
Need a price, lead time or replacement?
Send us a request and we will confirm the configuration, lead time and delivery terms. We reply by email.