AVR - Automatic Voltage Regulator R220
El AVR R220 es un regulador de voltaje analógico con control numérico, ideal y económico para alternadores pequeños (LSA40 y LSA42.3, de menos de 100kW), especialmente en aplicaciones de respaldo o continuas. Ofrece una regulación de voltaje de +/- 0.5% en estado estable y velocidad constante, con un rápido tiempo de respuesta de 500 ms. Su corriente de excitación nominal es de 3A (con un máximo de 7A durante 10 segundos) y cuenta con una entrada de alimentación/detección de 85 a 139 V (50/60Hz). Es robusto, operando de -40°C a +65°C, e incluye ajuste de voltaje y estabilidad, un fusible de 8A de acción lenta (no reemplazable) para protección de la fuente de alimentación, y es configurable para 50Hz o 60Hz. Cumple con los estándares I.E.C. 60034-1 y U.L. 508 / C.S.A., siendo fácil de configurar y fiable.
AVR - R220 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
- LEROY SEMER
- Dimensions
- 17 x 6 x 13 cm
- Weight
- 1.00 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 | LEROY SEMER |
| Weight | 1,00 kg |
| Dimensions | 17 x 6 x 13 cm |
| Spare Parts | |
|---|---|
| Generator Parts | AVR |
