Skip to Content
  1. All Products
  2. All Products
  3. AVR - Automatic Voltage Regulator MX321
USD $
AVR - Automatic Voltage Regulator MX321

AVR - Automatic Voltage Regulator MX321

https://www.nanwan.cc/web/image/product.template/943/image_1920?unique=2a5938f
(0 review)
El AVR MX321 (o MX321-A) es un regulador de voltaje automático trifásico tipo tiristor, ideal para generadores Stamford sin escobillas, con excitación derivada de un PMG para alta inmunidad a interferencias. Regula el voltaje de salida del generador compensando carga, velocidad, temperatura y factor de potencia, asegurando un control seguro y confiable. Sus especificaciones clave incluyen una entrada de detección de 190-264V CA (2 o 3 fases) y una entrada de energía PMG de 190-220V CA (3 fases, 3 cables). Ofrece una salida máxima de 120V CC, con 3.7A continuos (6A intermitentes por 10 segundos) y una regulación de +/- 0.5% RMS. Dispone de arranque suave, detección y protección contra sobretensión, limitación de corriente, apagado interno para protección, y un ajuste de voltaje externo de +/- 10%. Es robusto, con un amplio rango de temperatura operativa de -40°C a +70°C, y una disipación de potencia máxima de 18 vatios.

$ 167.70 167.7 USD Tax Excluded

167.70 Bs Tax Excluded

Not Available For Sale

  • Generator Parts
  • Applicable To
  • Weight
  • Dimensions

This combination does not exist.

Contact Us

Terms and Conditions
30-day money-back guarantee
Shipping: 2-3 Business Days

Share

AVR - MX321 belongs to the generator excitation circuit and holds the output voltage within about ±1 % when the load steps up or down.

AVR wear is thermal. It works inside the generator compartment with no ventilation of its own, so it is usually the first module to age on a high-hour set. Keeping one on the shelf avoids a multi-day stop for a low-cost part.

Specifications and compatibility

Applicable to
STAMFORD
Dimensions
17 x 6 x 13 cm
Weight
1.50 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 STAMFORD
Weight 1,50 kg
Dimensions 17 x 6 x 13 cm
Spare Parts
Generator Parts AVR