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General Characteristics:
The Linz Electric E1X13S B/4 is a brushless, self-excited, 4-pole synchronous alternator designed for use in three-phase generator systems. It integrates an AVR-controlled excitation system (models HVR11 or HVR30) to maintain voltage stability within ±1%. The alternator supports 110% overload for one hour every six hours, and it is fully compliant with EN60034-1, ISO 8528-3, and EN55011 standards.
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Electrical Specifications:
• Rated Power: 8.0 kVA (50 Hz) / 10.0 kVA (60 Hz)
• Rated Voltage (Star Connection): 380–480 V
• Frequency: 50 Hz (1500 rpm) / 60 Hz (1800 rpm)
• Power Factor: 0.8
• Efficiency (Class H): up to 83% at full load
• Total Harmonic Distortion (THD): <3% (full load and no load)
• Voltage Regulation Accuracy: ±1%
• Sustained Short-Circuit Capability: >300% of rated current
• Overload Capacity: 110% of rated power for one hour per six-hour cycle
• Air Flow Requirement: 2.8 m³/min at 50 Hz, 3.5 m³/min at 60 Hz
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Winding and Excitation System:
• Type: Double-layer stator winding with auxiliary winding
• Rotor: Damped with a cage-type design for stability
• Winding Pitch: 2/3
• Number of Stator Leads: 12
• Stator Winding Resistance: 1.77 Ω at 20°C
• Rotor Winding Resistance: 6.58 Ω at 20°C
• Exciter Stator Resistance: 16.5 Ω at 20°C
• Exciter Rotor Resistance: 2.15 Ω at 20°C
• Excitation Current: 0.51 A (no load) / 1.51 A (full load)
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Reactances and Time Constants (50 Hz):
• Xd (Direct Axis Synchronous): 273%
• X’d (Transient): 23.3%
• X’’d (Subtransient): 10%
• Xq (Quadrature Axis): 144%
• T’do (Open Circuit Field Time Constant): 320 ms
• T’d (Transient Time Constant): 27 ms
• T’’d (Subtransient Time Constant): 5 ms
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Mechanical Specifications:
• Frame Forms: B2, B3/B14, B3/B9
• Weight: 69.9 kg (B2) / 65.8 kg (B3/B14)
• Moment of Inertia: 0.066 kg·m²
• Bearings: Drive End – 6208-2Z-C3 / Non-Drive End – 6305-2Z-C3
• Cooling Method: Self-ventilated air cooling
• Cooling Air Flow: 2.8 m³/min (50 Hz) / 3.5 m³/min (60 Hz)
• Maximum Overspeed: 2250 rpm
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Performance and Efficiency:
The E1X13S B/4 demonstrates an efficiency of 83% at full load, with voltage dip under transient load conditions remaining below 25% and recovery within 0.5 seconds. Efficiency improves proportionally with load, ranging from 76% at 25% load to 83% at full load.
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Environmental and Operational Conditions:
• Nominal Ambient Temperature: 40°C
• Insulation Class: H (125°C rise)
• Protection Degree: IP21
• Altitude Derating: Begins above 1000 m
• Cooling Airflow: 2.8–3.5 m³/min depending on frequency
• Noise and vibration levels are compliant with EN mechanical balancing standards
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Certifications and Compliance:
• Standards: EN60034-1, ISO 8528-3, EN55011
• Optional Certifications: UL 1446, CSA-C22.2 No.100, UL1004-1 / UL1004-4
