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Alternator PRO35S C/4

Linz Electric PRO35S C/4 Alternator – 450 kVA Three-Phase Brushless Synchronous Alternator

The PRO35S C/4 alternator from Linz Electric is a robust three-phase, 4-pole brushless synchronous alternator designed for professional generator applications. Delivering 450 kVA at 50 Hz and 540 kVA at 60 Hz, it provides stable voltage output, low harmonic distortion, and high electrical efficiency. Built with Class H insulation, IP23 protection, and AVR-regulated excitation, it is ideal for industrial, commercial, and reliable standby power systems.

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Alternator Model

PRO35S C/4

50Hz (kVA)

450

60Hz (kVA)

540
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 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: 450 kVA

  • Rated Power at 60 Hz: 540 kVA

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

  • Rated current: 245.0 A

  • Power factor: 0.8

  • Frequency: 50 / 60 Hz

  • Phase: Three-phase

  • Efficiency:

    • 91.4% at 50 Hz

    • 92.7% at 60 Hz

  • Short-circuit transient reactance X’’d: 0.066 p.u.

  • Harmonic distortion: < 5%

  • Winding pitch: 2/3

Excitation & Regulation

  • Brushless excitation with auxiliary winding

  • AVR installed inside terminal box

  • 12-lead reconnectable winding

  • Stable voltage regulation under dynamic load variations

Mechanical Specifications

  • Frame size: 35

  • Dimensions:

    • Length (L): 993 mm

    • Height (H): 690 mm

    • Width (W): 560 mm

  • Shaft diameter: 55 mm

  • Total weight: 369 kg

  • Cooling: Shaft-mounted fan

  • Mounting: Compatible with single-bearing generator systems

Operational Performance

  • Excellent stability during sudden load steps

  • High efficiency supports lower generator fuel usage

  • Suitable for continuous-duty and standby power operation

  • Performs effectively with inductive, resistive, and nonlinear loads

Applications

  • Industrial generator systems

  • Commercial emergency backup

  • Rental & construction power modules

  • Telecom, utility, and infrastructure support

Datasheet

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