Stamford Alternators
Stamford (Cummins Generator Technologies) alternators — industry standard for reliability and performance.
Technical Specifications
| Excitation System | Brushless, AVR-controlled (AREP) |
| Insulation Class | Class H (180°C continuous) |
| Protection Degree | IP23 |
| Pole Configuration | 4-pole (1500 rpm at 50 Hz / 1800 rpm at 60 Hz) |
| Voltage Regulation | ±0.5% with AVR |
| Total Harmonic Distortion (THD) | <2% (linear load) |
| Efficiency | Up to 95% at full load |
| Cooling Method | IC01 — self-ventilated (air-cooled) |
| Voltage Range | 220–690V, 50/60 Hz |
| Winding | 2/3 pitch to minimize harmonics |
| Overspeed | 2250 rpm for 1500 rpm models |
| Standards | IEC 60034, NEMA MG1, CSA, CE |
Common Models & Sizing
| Model | Power @ 50 Hz | Typical Application |
|---|---|---|
| PIO144 | 50 kVA | Light commercial, small offices |
| UC224 | 100 kVA | Retail, telecom backup |
| UC274 | 250 kVA | Medium commercial buildings |
| HCI534 | 500 kVA | Small industrial, hospitals |
| HCI634 | 800 kVA | Data centers, manufacturing |
| LVI804 | 1500 kVA | Large industrial facilities |
Additional models available. Contact Epytro for exact specifications.
Key Features
AREP Excitation
Auxiliary winding provides short-circuit capability of 300% rated current for 10 seconds, enabling motor starting and fault clearing.
Proven Reliability
Stamford alternators are the most widely recognized alternator brand globally, trusted across 150+ countries for their proven track record.
H-Class Thermal Rating
VPI-impregnated windings rated for 180°C continuous operation with thermal margin. Survives harsh environments and overload conditions.
Ultra-Clean Waveform
THD below 2% with 2/3 pitch windings ensures sensitive electronics, UPS systems, and medical equipment operate without harmonic distortion.
Global Service Network
Backed by Cummins worldwide service network with genuine spare parts available in every major market. 24/7 support capability.
High Efficiency
Up to 95% efficiency at full load reduces fuel consumption and operating costs over the generator's lifetime.
Need a Stamford Alternator?
Every Epytro generator can be equipped with Stamford alternators. Tell us your power requirements and we'll supply the best alternator for your application.
Request a Quote →