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  • Original Diesel Generator Automatic Voltage Regulator AVR AS440
  • Original Diesel Generator Automatic Voltage Regulator AVR AS440
  • Original Diesel Generator Automatic Voltage Regulator AVR AS440
  • Original Diesel Generator Automatic Voltage Regulator AVR AS440
Original Diesel Generator Automatic Voltage Regulator AVR AS440

Original Diesel Generator Automatic Voltage Regulator AVR AS440

$300.00-$500.00/ Piece|1 Piece/Pieces(Min. Order)
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Original Diesel Generator Automatic Voltage Regulator AVR AS440

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Voltage Stabilization: Maintains consistent output voltage from diesel generators/alternators across fluctuating input voltages, ensuring reliable power supply.
  • Overload Protection: Safeguards connected equipment by preventing damage during excessive load conditions.

Key features

  • 1. Corrosion-Resistant Durable Construction

    • With a robust metal-reinforced casing, protect against dust, moisture, and mechanical damage in harsh environments.

  • 2. Precision Adjustable Voltage Control

    • With customizable voltage settings via intuitive dial/preset adjustments, fine-tune output to match specific generator requirements for optimal performance.

  • 3. Stable Voltage Output Across Wide Input Ranges

    • Maintain consistent 220-240V output even with input fluctuations (-30% to +25% of rated voltage), ensuring reliable power delivery for critical equipment.

  • 4. Industrial-Grade Reliability for Heavy-Duty Use

    • Designed for continuous operation in commercial/data center environments, preventing voltage instability that could disrupt machinery or IT systems.

  • 5. Comprehensive Safety Compliance

    • Built to meet IEC 60947-5-1 and ISO 80079 safety standards, minimizing electrical hazards through integrated overload protection and thermal cutoffs.

Product details

Original Diesel Generator Automatic Voltage Regulator AVR AS440

The Stamford AS440 Automatic Voltage Regulator (AVR) ensures stable voltage output for diesel generators across fluctuating input conditions. Designed with durable materials and robust protection features, it is ideal for industrial, commercial, and emergency power systems requiring reliable voltage regulation.

Technical specifications

FeatureSpecificationBenefit
MaterialDurable plastic/metal casingProtection against dust, moisture, and mechanical damage
Voltage Stability±2.5% regulation over wide input rangeConsistent power supply for critical equipment
Overload ProtectionThermal and short-circuit safeguardsPrevents generator damage during peak loads
Adjustable SettingsUser-configurable voltage thresholdsCustomizable performance for varying load conditions
Safety ComplianceCE/FCC certifiedMeets global electrical safety standards
CompatibilityUniversal fit for Stamford diesel gensetsEasy retrofitting without redesign

Customization guide

Adjustable voltage thresholds and response-time parameters allow fine-tuning to match specific generator models or load requirements. For high-voltage applications, select the Pro Model for ±1.5% precision.

Get inspired

Ensure uninterrupted power delivery for data centers, mining operations, or emergency systems with the AS440’s adaptive voltage regulation. Its compact design and universal compatibility make it a go-to solution for maintaining generator efficiency in harsh environments.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Voltage Regulation±2.5% accuracy±2.0% accuracy±1.5% accuracy*
Overload Capacity150% for 1 hour200% for 1 hour250% for 1 hour
Operating Temp. Range-20°C to +50°C-30°C to +60°C-40°C to +70°C
Response Time50ms30ms15ms*

Supplier's note

  1. Technical Breakthroughs:

    • The Pro Model’s ±1.5% voltage accuracy (33% better than industry standards) ensures precision in medical or IT infrastructure.
    • Enhanced thermal protection in the Advanced Model doubles the overload endurance for mining or construction sites.
    • Universal compatibility reduces downtime by enabling seamless retrofits across Stamford diesel generator models.

  2. Optimal Version Selection:

    • Base Model: Ideal for residential or small commercial setups with stable load conditions.
    • Advanced Model: Best for industrial users needing extended overload tolerance and sub-zero operation.
    • Pro Model: Required for critical infrastructure (e.g., hospitals, data centers) where minimal voltage fluctuations are non-negotiable. With its 15ms response time, it outperforms legacy AVRs by 70%, ensuring faster stabilization during grid fluctuations.

Frequently asked questions

  • Which AVR is best suited for small diesel generators in industrial settings?

  • How do I ensure safe installation of the Stamford AS440 AVR module?

  • Is the Stamford AS440 compatible with most diesel generator brands?

  • What certifications does the Stamford AS440 AVR hold for industrial use?

  • Can the AS440 AVR be used as a direct replacement for older voltage regulators?

  • Does the Stamford AS440 protect against voltage fluctuations in harsh environments?

  • Can I customize voltage settings on the Stamford AS440 AVR?

  • How does the Stamford AS440 extend generator lifespan compared to standard AVRs?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Voltage Regulation AccuracyIndustrial machinery, Data Centers±2% of rated voltage (ISO 8528-5 compliant)Ensures stable power for sensitive equipment (▲▲ vs Industry Standard ±3%)Higher cost for tighter tolerances (Advanced version)
Overload ProtectionConstruction sites, Emergency Systems200% overload capacity for 10 seconds (IEC 60038)Prevents equipment damage during peak loads (▲ vs Base version’s 150%)May trip unnecessarily in fluctuating grid conditions
Environmental ResistanceOutdoor generators, Mining OperationsIP54 rated (dust/water resistant)Operates in harsh environments (▲ vs Industry Standard IP32)Limited protection against extreme temperatures (e.g., >60°C)
Response TimeTelecommunication Towers, Hospitals50ms recovery time after voltage drop (IEC 62743)Minimizes downtime for critical infrastructure (▲▲ vs Industry Standard 100ms)Requires precise calibration for optimal performance
CompatibilityRetrofitting Old GeneratorsUniversal fit for 5–100kVA diesel generators (AS440 Base)Reduces replacement costs (▲▲ vs Competitor-specific models)Advanced version requires proprietary firmware updates
Maintenance RequirementsRemote Power Stations5-year service life with minimal tuning (vs Industry Standard 3 years)Lowers long-term operational costs (▲▲)Initial setup requires certified technicians

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