Генератор A.R.K164A

Electrical Performance

• Type: Three-phase, brushless, self-excited synchronous alternator

• Frequency: 50 / 60 Hz

• Power Factor: 0.8

• Voltage Range: 190–480 V (configurable in star, delta, or parallel star)

• Voltage Regulation: ±1.0%

• Total Harmonic Distortion (THD): <5% (balanced load), <1.5% (no-load)

• Sustained Short Circuit Current: >300% rated current

• Efficiency: 73.8–78.0% (depending on load and frequency)

• Telephone Harmonic Factor (THF): <2%

• Telephone Interference Factor (TIF): <50

• Power Ratings (Winding 311):

  • 50 Hz: 6.0–9.6 kVA

  • 60 Hz: 6.8–10.4 kVA

• Voltage Combinations:

  • 50 Hz: 380/220, 400/231, 415/240, 440/254

  • 60 Hz: 416/240, 440/254, 460/266, 480/277

• Short Circuit Ratio (1/Xd): 6.2–8.9 typical

Reactances (Per Unit at Rated kVA)

• Xd (Synchronous): 1.89–2.06

• X’d (Transient): 0.17–0.24

• X’’d (Subtransient): 0.12–0.15

• Xq (Quadrature): 0.83–1.18

• X’’q (Quadrature Subtransient): 0.19–0.27

• X₂ (Negative Sequence): 0.16–0.23

• X₀ (Zero Sequence): 0.06–0.10

• Leakage Reactance (XL): 0.07–0.09

• Time Constants:

  • Transient (T’d): 0.25 s

  • Subtransient (T’’d): 0.012 s

  • Armature (Ta): 0.0045 s

  • Open Circuit Field (T’do): 0.0035 s

Construction & Design

• Insulation Class: H (125°C rise at 40°C ambient)

• Protection: IP23

• Cooling: Self-ventilated air cooling

  • 50 Hz: 0.071 m³/s (150 cfm)

  • 60 Hz: 0.09 m³/s (191 cfm)

• Frame: Robust steel structure with cast aluminum front and rear covers

• Stator: Double-layer winding, 2/3 pitch to eliminate triple harmonics (3rd, 9th, 15th, etc.)

• Rotor: Damped rotor with dynamic balance (BS6861 standard)

• Bearings:

  • Drive End: 6309-2RS (ISO)

  • Non-Drive End: 6306-2RS (ISO)

  • Type: Sealed-for-life, non-maintenance ball bearings

• Overspeed Capability: 120% of rated speed (2250 rpm)

• Leads: 12 reconnectable leads (star, delta, or parallel star)

• Winding Resistance:

  • Stator: 1.62 Ω/phase (22°C, star connection)

  • Rotor: 0.44 Ω (22°C)

• Rotor Inertia (WR²): 0.0923 kg·m²

Dimensions & Weight

• Rotor Weight: 22.5 kg

• Stator Weight: 25.6 kg

• Complete Alternator Weight: 88–101 kg (depending on bearing configuration)

• Shipping Weight (Crated): 91–101 kg

• Packing Dimensions: 64 × 54 × 72 cm

Regulation & Control

• Excitation System: Self-excited

• AVR Models: SX460 (standard), SX440 (optional), AS440 / MX341 / MX321 (optional)

• Voltage Regulation Accuracy: ±1.0%

• Parallel Operation: Supported (AVR-dependent)

• Protection Features:

  • Stator winding and bearing overheat protection

  • Anti-condensation heater (optional)

  • Low-speed voltage drop protection

• RFI Suppression: Complies with BS EN 61000-6-2 & BS EN 61000-6-4, VDE 0875G/N

• Standards Compliance: IEC60034, GB755, BS5000, NEMA MG1-22, CSA C22.2-100, AS1359

• Certification: ISO9001 Quality Management System

Environmental Parameters

• Operating Temperature: –15°C to +40°C

• Relative Humidity: Up to 95% (non-condensing)

• Altitude: Up to 1000 m without derating

• Cooling Air Requirement: 0.071–0.09 m³/s depending on frequency

• Noise & Vibration: Meets BS6861 mechanical balance standards

Performance Summary

• Efficiency Range: 73.8–78.0%

• Voltage Dip (Transient Load): ≤25% at 0.8 PF

• Recovery Time: <0.5 seconds

• Locked Rotor Motor Starting: >300% rated current

• Applications: Prime power, standby, rental, telecom, mobile, lighting tower, refrigeration, and railway generator systems