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SP Powerworld

SP Powerworld EA480 AVR

SP Powerworld EA480 AVR

Regular price £156.00 GBP
Regular price Sale price £156.00 GBP
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SP Powerworld EA480 is a direct replacement for the Genuine Stamford* AS480 E000-14808/1P. It's equipped with Over Excitation Protection, Soft Start Voltage Ramping Function, EMI suppression and Under Frequency Protection.

£130.00 plus VAT

Accepted worldwide as the only Quality and Legal aftermarket replacement. It's been designed to work in exactly the same way and operates at the same performance. It’s the same size, function and has the same wiring connections, it also comes with 12 months warranty.


Ex stock - shipped Worldwide. For EURO or USD pricing please contact us:


Tel: +44 (0)115 923 2568 (United Kingdom)

Tel: (24-hour) +44 (0)7484709956 (United Kingdom)

*All manufacturer names, numbers, symbols and descriptions are used for reference purpose only and do not imply that any part is the product of these manufacturers.


  • Rated frequency 50/60 Hz
  • Under frequency protection and soft start voltage ramping
  • EMI suppression
  • Voltage regulation less than +/-0.5%
  • Over excitation protection
  • Quadrature Droop Input for parallel operation
  • Supports connection with Stamford Excitation Boost System (EBS)


Sensing / Power Input
(Average Reading)
  • Voltage 60 to 300 Vac 1 phase 2 wire
  • Frequency 50/60 Hz (Jumper Selected)
Excitation Output
  • 110V 1 phase Continuous 31 Vdc 5A Max. 45 Vdc 7.5A for 10 seconds
  • 220V 1 phase Continuous 63 Vdc 5A Max. 90 Vdc 7.5A for 10 seconds
  • Note: If AVR is mounted externally to alternator continuous current should be reduced by 20%
  • Resistance Min. 6 ohms Max. 100 ohms @ 110V / Min. 13 ohms Max. 100 ohms @ 220V
Build Up Voltage
  • 4Vac 25Hz residual volts at power input terminal
External Voltage Adjustment
  • Max. +/-10% @ 1K ohm 1 watt potentiometer
  • Use 7.5K ohms resistor to enable 110Vac sensing
Voltage Regulation
  • Less than +/-0.5% (with 4% engine governing)
Typical System Response
  • Less than 20 milliseconds
Static Power Dissipation
  • Max. 4 watts
Quadrature Droop Input
  • Input resistance 10 ohms
  • Sensitivity 0.07A for 5% voltage drop (PF=0)
  • Max. input 0.33A
Over Excitation Protection
  • Excitation Voltage 70 Vdc +/-10%
  • Time delay 10 to 15 seconds
Voltage Thermal Drift
  • Less than 3% at temperature range -40 to +70 °C


Jumper Terminals
  • x1
M5L35 Screw
  • x2
Adjustment Tool
  • x1


Operating Temperature
  • -40 to +60 °C
Storage Temperature
  • -40 to +85 °C
Relative Humidity
  • Max. 95%
  • 5.5 Gs @ 60 Hz

Physical Specifications

  • 130.0 (L) x 90.0 (W) x 39.0 (H) mm
  • 5.12 (L) x 3.54 (W) x 1.54 (H) inch
  • 260 g +/-2%
  • 0.573 lb +/-2%

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  • Genuine Products with Full Warranty

    We are aware that there are poorly made illegal Chinese counterfeit models available on the market. Please note our products are Genuine, come with full warranty and have been sourced directly from the factory.

  • Worldwide Shipping

    All items are shipped from the United Kingdom and we cover all of Europe and the rest of the world. For an accurate DHL Quotation please contact us.