Alternateur A.R.K224D

A.R.K224D Alternateur – Alternateur Sans Balais Haute Efficacité pour Applications Industrielles et Secours

L’A.R.K224D d’Arken Power Solutions est un alternateur synchrone triphasé sans balais, conçu pour les groupes électrogènes industriels, de location et de secours. Avec excitation auto-excitée régulée par AVR SX460 (SX440 en option), il offre une régulation de tension ±1 %, un THD < 5 % et un rendement jusqu’à 89,4 %. Doté d’une isolation classe H, de la protection IP23 et d’un rotor équilibré dynamiquement, il assure une stabilité mécanique élevée et une longue durée de vie en service prime ou secours.

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Alternator Model

A.R.K224D

50Hz (kVA)

50

60Hz (kVA)

62.5
Système d’excitationSELF EXCITED
A.V.R. OPTIONAL SX440
Régulation de tension à régime établi ± 1.0 %
Court-circuit prolongé>300% OF RATED CURRENT
Facteur de puissance nominal0.8

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 linear load), <1.5% (no-load)

  • Sustained Short Circuit Current: >300% of rated current

  • Efficiency: Up to 89.4% depending on load and voltage configuration

  • Telephone Harmonic Factor (THF): <2%

  • Telephone Interference Factor (TIF): <50

  • Excitation System: Self-excited, AVR-controlled

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

  • Short Circuit Ratio (1/Xd): 6.0 typical

Reactances (Per Unit, Saturated)

  • Xd (Synchronous): 2.10–3.04

  • X’d (Transient): 0.16–0.22

  • X’’d (Subtransient): 0.10–0.15

  • Xq (Quadrature): 0.97–1.40

  • X’’q (Quadrature Subtransient): 0.13–0.14

  • X₂ (Negative Sequence): 0.12–0.14

  • X₀ (Zero Sequence): 0.07–0.09

  • Leakage Reactance (XL): 0.06–0.09

  • Time Constants:

    • Transient (T’d): 0.027 s

    • Subtransient (T’’d): 0.006 s

    • Open Circuit Field (T’do): 0.7 s

    • Armature (Ta): 0.0055 s

Construction & Design

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

  • Protection: IP23 (optional IP44 with 5–10% derating)

  • Cooling: Self-ventilated air cooling

    • 50 Hz: 0.216 m³/s (458 cfm)

    • 60 Hz: 0.281 m³/s (595 cfm)

  • Frame: Steel structure with cast aluminum front and rear covers

  • Stator: Double-layer winding, 2/3 pitch eliminates triple harmonics

  • Rotor: Damped cage rotor, dynamically balanced to BS6861 standards

  • Bearings:

    • Drive End: 6315-2RS (ISO, sealed-for-life ball bearing)

    • Non-Drive End: 6310-2RS (ISO, sealed-for-life ball bearing)

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

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

  • Stator Resistance: 0.129 Ω/phase (22°C, star connection)

  • Rotor Resistance: 0.64 Ω (22°C)

  • Rotor Inertia (WR²): 0.4216 kg·m² (single bearing) / 0.4198 kg·m² (double bearing)

Dimensions & Weight

  • Wound Rotor Weight: 86.28 kg (single bearing) / 77.9 kg (double bearing)

  • Wound Stator Weight: 86 kg

  • Complete Alternator Weight: 285 kg (single bearing) / 290 kg (double bearing)

  • Shipping Weight: 307–311 kg (crated)

  • Packing Dimensions: 97 × 57 × 96 cm

Regulation & Control

  • Excitation: Self-excited, AVR-controlled

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

  • Voltage Regulation Accuracy: ±1.0%

  • Parallel Operation: Supported (AVR-dependent)

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

  • Standards Compliance: IEC60034, GB755, BS5000, VDE0530, 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: 0.216–0.281 m³/s depending on frequency

  • Noise & Vibration: Balanced per BS6861 mechanical standards

Performance Summary

  • Efficiency Range: 87.2–89.4%

  • 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

Datasheet

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