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Alternator PRO28M E/4

Linz Electric PRO28M E/4 Alternator – 300 kVA Three-Phase Brushless Synchronous Alternator

The PRO28M E/4 alternator from Linz Electric is a three-phase, 4-pole brushless synchronous alternator designed for professional generator systems. Delivering 300 kVA at 50 Hz and 360 kVA at 60 Hz, it ensures stable voltage, low harmonic distortion, and high efficiency. With Class H insulation, IP23 protection, and robust AVR-regulated performance, the PRO28M E/4 is ideal for demanding industrial and standby power applications.

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Alternator Model

PRO28M E/4

50Hz (kVA)

300

60Hz (kVA)

360
Control Systemself-excited
A.V.R.HVR30
Voltage Regulation± 1 %
Sustained Short Circuit> 300 % of rated current
Rated Power Factor0,8

  • General Characteristics:

    • Three-phase, 4-pole synchronous alternator

    • Brushless, self-excited system

    • Electronic voltage regulation (AVR)

    • Rated speeds: 1500 rpm (50 Hz) / 1800 rpm (60 Hz)

    • Cooling: Self-ventilated

    • Protection degree: IP23

    • Insulation class: H

    • Standards: EN 60034-1, IEC 60034-1, ISO 8528-3

  • Electrical Specifications:

    • Rated Power at 50 Hz: 300 kVA

    • Rated Power at 60 Hz: 360 kVA

    • Rated voltage: 400/230 V (50 Hz) / 480/277 V (60 Hz)

    • Rated current: 230.9 A

    • Power factor: 0.8

    • Frequency: 50 Hz / 60 Hz

    • Phase: Three-phase

    • Efficiency:

    – 92.0% at 50 Hz

    – 93.0% at 60 Hz

    • Transient reactance X’’d: 0.064 p.u.

    • Harmonic distortion (THD): < 5%

    • Winding pitch: 2/3

  • Excitation & Regulation:

    • Brushless excitation with auxiliary winding

    • AVR located inside terminal box

    • 12-lead reconnectable winding

    • Stable voltage regulation under load variation

  • Mechanical Specifications:

    • Frame size: 28

    • Dimensions:

    – Length (L): 973 mm

    – Height (H): 690 mm

    – Width (W): 540 mm

    • Shaft diameter: 55 mm

    • Total weight: 376 kg

    • Cooling: Shaft-mounted fan

    • Mounting: Compatible with single-bearing generator couplings

  • Operational Performance:

    • High stability under sudden load application

    • High electrical efficiency reduces genset fuel consumption

    • Suitable for continuous or standby duty

    • Performs reliably with resistive, inductive, and nonlinear loads

  • Applications:

    • Industrial generator sets

    • Backup & emergency power systems

    • Rental and construction gensets

    • Utilities, telecom, infrastructure

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