Генератор PRO18S B/4

General Characteristics:

The Linz Electric PRO18S B/4 is a 4-pole, brushless, self-excited synchronous alternator designed for heavy-duty generator applications. It uses an AVR system (HVR11 or HVR30) ensuring ±1% voltage regulation accuracy. Rated for operation at 1500 rpm (50 Hz) and 1800 rpm (60 Hz), the alternator complies with EN60034-1, ISO 8528-3, and EN55011 standards.

Electrical Specifications:

• Rated Power: 45 kVA (50 Hz) / 54 kVA (60 Hz)

• Voltage Range (Star Connection): 380–480 V

• Power Factor: 0.8

• Frequency: 50 / 60 Hz

• Efficiency (Class H): up to 90% depending on load

• Total Harmonic Distortion (THD): <3%

• Voltage Regulation Accuracy: ±1%

• Sustained Short-Circuit Current: >250% of rated current

• Overload Capability: 110% for 1 hour every 6 hours

• RFI/EMC: Fully compliant with EN55011

• Cooling Airflow Requirement: 8–9 m³/min

Winding & Excitation System:

• Stator: Double-layer winding with auxiliary winding

• Rotor: Winding with damping cage for stability

• Winding Pitch: 2/3

• Leads: 12 (reconnectable)

• Stator Resistance: 0.10 Ω @ 20°C

• Rotor Resistance: 6.15 Ω @ 20°C

• Exciter Stator Resistance: 15.0 Ω

• Exciter Rotor Resistance: 1.87 Ω

• Excitation Current: 0.85 A (no-load) / 1.92 A (full load)

Reactances & Time Constants (50 Hz):

• Xd: 305% – 188%

• X’d: 23.2% – 14.4%

• X’’d: 7.9% – 4.9%

• Xq: 156% – 107%

• T’do: 215 ms

• T’d: 14 ms

• T’’d: 7 ms

Mechanical Specifications:

• Frame Forms Available: B2, B3/B14, B3/B9

• Weight: 190–198 kg depending on frame selection

• Moment of Inertia: 0.240–0.275 kg·m²

• Bearings:

• Drive End: 6308-2RS-C3

• Non-Drive End: 6306-2RS-C3

  • Cooling: Self-ventilated airflow

  • Maximum Overspeed: 2250 rpm

Performance & Efficiency:

• Efficiency at 50 Hz:

• 25% load: ~86%

• 50% load: ~89%

• 75% load: ~90%

• Full load: ~90%

  • Efficiency at 60 Hz: Up to 91% at full load

  • Transient Load Response: <25% voltage dip with <0.5 s recovery

  • Excellent waveform stability due to 2/3 pitch winding

Environmental & Operational Conditions:

• Rated Ambient Temperature: 40°C

• Altitude Derating: Above 1000 m

• Insulation Class: Class H

• Protection Class: IP23

• Vibration and mechanical balance compliant with EN standards

Certifications:

• EN60034-1

• ISO 8528-3

• EN55011

• Optional UL/CSA certification packages