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Alternator PRO40M C/4

Linz Electric PRO40M C/4 Alternator – 1250 kVA Three-Phase Brushless Synchronous Alternator

The PRO40M C/4 alternator from Linz Electric is a durable three-phase, 4-pole brushless synchronous alternator engineered for industrial and commercial generator systems. Delivering 1250 kVA at 50 Hz and 1500 kVA at 60 Hz, it ensures stable voltage, low harmonic distortion, and high operational efficiency. With Class H insulation, IP23 protection, and AVR-controlled excitation, it provides reliable performance for continuous-duty and standby applications.

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Alternator Model

PRO40M C/4

50Hz (kVA)

1250

60Hz (kVA)

1500
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 system: 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: 1250 kVA

  • Rated Power at 60 Hz: 1500 kVA

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

  • Rated current: 289.0 A

  • Frequency: 50 / 60 Hz

  • Phase: Three-phase

  • Power factor: 0.8

  • Efficiency:

    • 92.7% at 50 Hz

    • 93.8% at 60 Hz

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

  • Harmonic distortion (THD): < 5%

  • Winding pitch: 2/3

Excitation & Voltage Regulation

  • Brushless excitation with auxiliary winding

  • AVR located inside terminal box

  • 12-lead reconnectable winding

  • Stable voltage output under dynamic load changes

Mechanical Specifications

  • Frame size: 40

  • Dimensions:

    • Length (L): 1088 mm

    • Height (H): 758 mm

    • Width (W): 620 mm

  • Shaft diameter: 65 mm

  • Total weight: 470 kg

  • Cooling: Shaft-mounted fan

  • Mounting: Compatible with single-bearing generator systems

Operational Performance

  • Excellent stability during sudden load steps

  • High electrical efficiency reduces generator fuel consumption

  • Suitable for continuous-duty and standby gensets

  • Performs effectively with inductive, resistive, and nonlinear loads

Applications

  • Industrial generator sets

  • Commercial emergency power systems

  • Rental and construction gensets

  • Utility, telecom, and infrastructure backup power

Datasheet

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