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Alternator PRO35M F/4

Linz Electric PRO35M F/4 Alternator – 670 kVA Three-Phase Brushless Synchronous Alternator

The PRO35M F/4 alternator from Linz Electric is a powerful three-phase, 4-pole brushless synchronous alternator engineered for professional generator systems. Delivering 670 kVA at 50 Hz and 804 kVA at 60 Hz, it offers stable voltage regulation, low harmonic distortion, and long-term operational reliability. With Class H insulation, IP23 protection, and AVR-controlled excitation, it is designed for industrial, commercial, and continuous-duty power applications.

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Alternator Model

PRO35M F/4

50Hz (kVA)

670

60Hz (kVA)

804
Control Systemself-excited
A.V.R.HVR30
Voltage Regulation± 1 %
Sustained Short Circuit> 300 % of rated current
Rated Power Factor0,8

  • Three-phase synchronous alternator

  • 4-pole, brushless, self-excited

  • Electronic AVR voltage regulation

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

  • Cooling: Self-ventilated

  • Protection degree: IP23

  • Insulation class: H

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

Electrical Specifications

  • Rated Power at 50 Hz: 670 kVA

  • Rated Power at 60 Hz: 804 kVA

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

  • Rated current: 476.3 A

  • Power factor: 0.8

  • Frequency: 50 / 60 Hz

  • Phase: Three-phase

  • Efficiency:

    • 93.6% at 50 Hz

    • 94.6% at 60 Hz

  • Transient reactance X’’d: 0.056 p.u.

  • Harmonic distortion (THD): < 5%

  • Winding pitch: 2/3

Excitation & Regulation

  • Brushless excitation with auxiliary winding

  • AVR located in terminal box

  • 12-lead reconnectable stator winding

  • Stable voltage response under dynamic load conditions

Mechanical Specifications

  • Frame size: 35

  • Dimensions:

    • Length (L): 1148 mm

    • Height (H): 806 mm

    • Width (W): 660 mm

  • Shaft diameter: 65 mm

  • Total weight: 600 kg

  • Cooling: Shaft-mounted fan

  • Mounting: Suitable for single-bearing generator coupling

Operational Performance

  • Fast and stable voltage recovery during sudden load changes

  • High efficiency enhances generator fuel performance

  • Suitable for continuous-duty and standby operation

  • Handles resistive, inductive, and nonlinear loads effectively

Applications

  • Industrial and commercial generator sets

  • Backup and emergency power systems

  • Rental and construction gensets

  • Power support for utilities and infrastructure

Datasheet

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