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AVR - Automatic Voltage Regulator M16FA655A

AVR - Automatic Voltage Regulator M16FA655A

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El Regulador de Voltaje Marelli Motori M16F655A "MARK V" es una solución robusta y altamente confiable, diseñada específicamente para generadores sincrónicos, en especial generadores Marelli Motori de las series MJB 160-250 y M8B 160-200, apto para máquinas de 10 hasta 2000 kVA. Este regulador está completamente aislado, lo que le permite mantener una fiabilidad excepcional incluso en condiciones ambientales severas como alta humedad, polvo, atmósferas salinas y altos niveles de vibración. Es compatible con operaciones monofásicas y trifásicas. Además, incorpora un filtro de interferencia electromagnética interno que asegura el cumplimiento de los estándares EMC relevantes, garantizando un rendimiento óptimo en tu generador.

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AVR - M16F655A is the automatic voltage regulator of the generator: it reads the output voltage and corrects the field excitation so the voltage stays stable as the load changes.

A failing AVR shows up before it dies: voltage dips 5–30 V when a large motor starts, lights flicker, or the control panel reboots. When it fails completely the set delivers only residual voltage or trips on overvoltage.

Specifications and compatibility

Applicable to
MARELLI MOTORI
Dimensions
17 x 6,5 x 13 cm
Weight
2.00 kg

How to verify before ordering

  • Check that the reference printed on the AVR label (for example AS440, MX341, R120) matches exactly; variants differ in sensing range and excitation level.
  • Confirm the excitation input voltage and the generator type it serves. They are not interchangeable across generator makes or speed ranges.
  • Inspect wiring and brushes before replacing the module: a loose connection produces exactly the same symptoms as a burnt AVR.

Frequently asked questions

How do I know the fault is the AVR and not the generator?

Measure output voltage at steady load. If it is low and does not respond to the excitation trim, while windings and rotating diodes are healthy, the AVR is the suspect. A cross-test with a spare AVR confirms it in minutes.

Can the voltage be trimmed after installation?

Yes. Most of these regulators have a voltage and a stability trim pot. Set them at no load to the site nominal voltage, then verify under load before signing off.

Related parts

See the spare parts catalogue or request a quotation quoting the equipment reference. Third-party trademarks are cited for identification purposes only.

Specifications

Characteristics
Applicable To MARELLI MOTORI
Weight 2,00 kg
Dimensions 17 x 6,5 x 13 cm
Spare Parts
Generator Parts AVR