STAMFORD UC22/UC27 — low-voltage synchronous generator 26–312 kVA
Country: United Kingdom · Model: UC22/UC27
Four-pole brushless generators of 26–312 kVA in two frame sizes. The UC22 gives up to 85 kVA at 50 Hz and 103–104 kVA at 60 Hz, and the UC27 up to 250 kVA at 50 Hz and 312–313 kVA at 60 Hz. The output voltage is 380–690 V, with class H insulation and IP23 protection.
- UC22 output
- up to 85 kVA (50 Hz) / 103 kVA (60 Hz), range 26–103 kVA
- UC27 output
- up to 250 kVA (50 Hz) / 312 kVA (60 Hz), range 75–312 kVA
- Voltage
- 380–690 V
- Number of poles
- 4
Technical specifications
| UC22 output | up to 85 kVA (50 Hz) / 103 kVA (60 Hz), range 26–103 kVA |
|---|---|
| UC27 output | up to 250 kVA (50 Hz) / 312 kVA (60 Hz), range 75–312 kVA |
| Voltage | 380–690 V |
| Number of poles | 4 |
| Winding pitch | 2/3 |
| Excitation | self-excited; option — PMG |
| AVR | AS440 (standard); MX321, MX341, VITA 05 — options |
| Insulation | class H |
| Protection | IP23 |
| Standards | BS EN 60034, BS5000, VDE 0530, NEMA MG1-32, CSA C22.2-100, AS1359 |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The exciter feeds the main rotor through a three-phase full-wave rectifier bridge with a surge suppressor; the field is rotating and the winding pitch is 2/3. The standard regulator is the analog AS440 with self-excitation, which replaced the discontinued SX460. Optionally a permanent-magnet sub-exciter PMG is fitted with the MX321 or MX341, or the digital VITA 05. The AS440 supports a droop current transformer for parallel operation. The rotors are dynamically balanced to BS6861 part 1, grade 2.5. Industrial UCI, marine UCM and UCDI models are available, as well as a two-bearing version, thermistors, single-phase reconnection and anti-condensation heaters. The generators comply with BS EN 60034, BS5000, VDE 0530, NEMA MG1-32, IEC 34, CSA C22.2-100 and AS1359.
How to choose
The UC22 is the smallest frame size offered for sites with grid code requirements, and the UC27 is used in cogeneration, on ships, in mobile construction, municipal services and telecommunications. If less is needed, see the S0/S1 at 7.5–62.5 kVA. For outputs above 312 kVA there are the S4 (210–560 kVA) and S5 (450–937 kVA).
Request a price and lead time
STAMFORD UC22/UC27 — low-voltage synchronous generator 26–312 kVA. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What is the output of the UC22 and UC27 generators?
The UC22 gives up to 85 kVA at 50 Hz, with a series range of 26–103 kVA. The UC27 gives up to 250 kVA, with a range of 75–312 kVA, and a maximum of 312 kVA at 60 Hz.
Which voltage regulator is fitted in the UC22/UC27?
The AS440 with self-excitation as standard. Optionally the MX321 or MX341 with a PMG sub-exciter, or the digital VITA 05.
Can the UC22/UC27 be run in parallel operation?
Yes, the AS440 supports a droop current transformer for parallel operation with other generators.
Which standards are the UC22 and UC27 built to?
To BS EN 60034 and to sections of BS5000, VDE 0530, NEMA MG1-32, IEC 34, CSA C22.2-100 and AS1359.
Are there marine and industrial versions of the UC22/UC27?
Yes, industrial UCI and marine UCM, as well as UCDI models. All have four poles and a winding pitch of 2/3.
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