Spares / Auto Voltage Regulators


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The AVR08 Automatic Voltage Regulator is designed for three-phase and single-phase alternators. This is a premium quality product at a reasonable price, and offers unsurpassed reliability and operating features.

All of our AVRs are field type tested.



Automatic Voltage Regulator for three-phase and single-phase alternators

The following is a summary of features and capabilities:

  • Genuine 30A DC output rating
  • Output voltage to field: 100V DC max. @ 240V AC input
  • Integral automatic build-up circuit works with only 1.5V AC residual
  • Adjustable Excitation voltage limit prevents alternator damage
  • Three-phase or single-phase application
  • Single-phase operating range: 180V to 280V 50/60Hz
  • Three-phase operating range: 180V to 480V 50/60Hz
  • Three-phase sensing circuit
  • Very low temperature drift of voltage set point
  • Totally solid-state construction (no relays)
  • Premium quality components only are used
  • Extremely rugged design
  • Simplified adjustment of stability for even the slowest of alternators
  • High energy spike protection built-in
  • Ambient air temperature rating of 50 C
  • Generous heatsink for good operating margin at 50 C ambient
  • Solid, easy to use terminals
  • Compact size: 135mm x 135mm x 115mm