[rank_math_breadcrumb]

Alternator PRO35S D/4

Linz Electric PRO35S D/4 Alternator – 550 kVA Three-Phase Brushless Synchronous Alternator

The PRO35S D/4 alternator by Linz Electric is a high-performance three-phase, 4-pole brushless synchronous alternator engineered for industrial and commercial generator applications. Delivering 550 kVA at 50 Hz and 660 kVA at 60 Hz, it provides stable voltage output, low harmonic distortion, and durable long-term operation. With Class H insulation, IP23 protection, and AVR-regulated excitation, it is ideal for continuous-duty and standby generator systems.

GET A QUOTE

Alternator Model

PRO35S D/4

50Hz (kVA)

550

60Hz (kVA)

660
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

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

Electrical Specifications

  • Rated Power at 50 Hz: 550 kVA

  • Rated Power at 60 Hz: 660 kVA

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

  • Rated current: 273.5 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 & Voltage Regulation

  • Brushless excitation with auxiliary winding

  • AVR located inside terminal box

  • 12-lead reconnectable winding

  • Stable voltage control during 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: 389 kg

  • Cooling: Shaft-mounted fan

  • Mounting: Suitable for single-bearing generator coupling

Operational Performance

  • Excellent voltage recovery during sudden load application

  • High efficiency contributes to improved fuel performance

  • Suitable for continuous-duty and standby power systems

  • Performs efficiently with resistive, inductive, and nonlinear loads

Applications

  • Industrial generator units

  • Commercial backup and emergency systems

  • Rental and construction gensets

  • Telecom, utilities, and infrastructure power backup

Datasheet

Download

Related Products