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Linz Electric PRO22S B/4 Alternator – 75 kVA Three-Phase Brushless Alternator
The PRO22S B/4 alternator by Linz Electric is a three-phase, 4-pole brushless synchronous alternator delivering 75 kVA at 50 Hz and 90 kVA at 60 Hz. With AVR-controlled voltage regulation, low harmonic distortion, Class H insulation, and IP23 protection, it provides reliable performance for industrial and commercial generator applications, ensuring stable and clean electrical output under varying load conditions.
| Control System | self-excited |
| A.V.R. | HVR11-HVR30 |
| Voltage Regulation | ± 1 % |
| Sustained Short Circuit | > 300 % of rated current |
| Rated Power Factor | 0,8 |
General Characteristics
• Three-phase, 4-pole, synchronous, brushless alternator
• Self-excited with electronic AVR voltage regulation
• Operates at 1500 rpm (50 Hz) or 1800 rpm (60 Hz)
• Meets EN60034-1 and ISO 8528-3 standards
Electrical Specifications
• Rated Power at 50 Hz: 75 kVA
• Rated Power at 60 Hz: 90 kVA
• Voltage output (star-connected): 400 V / 480 V class
• Frequency: 50 Hz or 60 Hz
• Phase: Three-phase
• Power factor: 0.8
• Voltage regulation: Electronic AVR
• Harmonic distortion minimized via 2/3 pitch winding
Winding & Construction
• Brushless excitation system with auxiliary winding
• 12-lead terminal system for multiple voltage configurations
• 2/3 pitch winding ensuring reduced low-order harmonics
• Stator and rotor designed for thermal stress resistance
Insulation & Protection
• Insulation class: H
• Protection rating: IP23
• Cooling system: Self-ventilated
Operational Performance
• Suitable for both continuous and standby duty
• Stable voltage under sudden load application
• High electrical efficiency improving engine fuel economy
Mechanical Characteristics
• Heavy-duty frame suitable for industrial generator environments
• Shaft-mounted fan for optimized ventilation
• Multiple mounting/coupling configurations depending on genset design
Applications
• Industrial and commercial power generation
• Backup and emergency generator systems
• Rental gensets and construction sites
• Telecommunications, utilities, and infrastructure
