Leroy Somer Alternators
AVR-controlled brushless alternators with H-class insulation, IP23 protection, and 4-pole design. Trusted worldwide for reliable power generation.
Technical Specifications
| Excitation System | Brushless, AVR-controlled (SHUNT / AREP / PMG options) |
| Insulation Class | Class H (180°C continuous) |
| Protection Degree | IP23 (standard); IP44 optional |
| Pole Configuration | 4-pole (1500 rpm at 50 Hz / 1800 rpm at 60 Hz) |
| Voltage Regulation | ±0.5% with AVR |
| Total Harmonic Distortion (THD) | <3% (linear load) |
| Efficiency | Up to 94% 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 | Frame | Typical Application |
|---|---|---|---|
| TAL044D | 100 kVA | S4 | Light commercial, small offices |
| TAL044H | 135 kVA | S4 | Retail, telecom backup |
| TAL046D | 160 kVA | M7 | Medium commercial buildings |
| TAL046H | 200 kVA | M7 | Small industrial, hospitals |
| TAL046F | 250 kVA | M8 | Data centers, manufacturing |
| TAL049C | 350 kVA | L9 | Large industrial facilities |
| TAL049D | 400 kVA | L9 | Continuous prime power |
| TAL0473B | 500 kVA | P10 | Heavy industrial, mining |
| TAL0473D | 625 kVA | P10 | Utility, large-scale backup |
Larger models available up to 3,500 kVA. 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.
Maintenance-Free
Brushless design eliminates slip rings and carbon brushes. No brush dust, no commutator wear — just sealed bearings for 30,000+ hours.
H-Class Thermal Rating
VPI-impregnated windings rated for 180°C continuous operation with thermal margin. Survives harsh environments and overload conditions.
Clean Waveform
THD below 3% with 2/3 pitch windings ensures sensitive electronics, UPS systems, and medical equipment operate without harmonic distortion.
Global Certification
Meets IEC 60034, NEMA MG1, CSA, and CE standards. Suitable for export to 140+ countries without re-certification.
AREP / PMG Ready
Optional PMG excitation for 300% short-circuit capability over 10 seconds. Ideal for critical applications requiring motor-starting performance.
Need a Leroy Somer Alternator?
Every Epytro generator can be equipped with Leroy Somer alternators. Tell us your power requirements and we'll supply the best alternator for your application.
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