Products:
      SX440 generator excitation regulator board for the self-excitation type AVR, this product is out of Stanford in 2008 only after new products have compatible, and the performance and quality beyond the Stanford excitation regulator board. Early original products for blue capacitance (EPCOS capacitor), late (after 2011) the product color is gray capacitance (AV capacitance)
      1, can be AS440, AS480 instead, but there SX440 and machine auxiliary input, other functions are similar.
      2, compatible with AS440, AS480 product, there is the difference in the SX440 and machine auxiliary input, AS440 and machine no auxiliary input, but the AS440 for more than 200KW generator sets, but basic functions are similar.

Product performance and features:
      1, voltage accuracy <± 1%
      2, can be used in parallel unit
      3 to choose 50/60 Hz jumper copper
      4, with the loss of the detected voltage protection circuit
      5, with the low-frequency protection (UFRO) and the voltage slowly build function
      6, with LED status indicator frequency is too low
      7, can be copper jumper settings to suit different power generators
      8, prominent features: low-frequency protection inflection point adjustment, DROOP and machines, single-phase voltage detection, 110V / 220V system common.
      9, a selling point: DROOP and machine.

AVR adjustment (adjusted at the factory, the user only when necessary, adjusted as follows):
      1, the voltage regulator such as the output voltage does not match the voltage adjustment potentiometer clockwise, the output voltage increases; otherwise reversed.
      2, the frequency setting the engine speed is adjusted 47HZ, UFRO potentiometer counterclockwise rotation, so that the indicator light-emitting diodes, can be transferred back to the engine speed.
      3, overcurrent cut the generator excitation at rated power, rotary potentiometer counterclockwise field trip, so that the indicator light-emitting diodes, and then rotated about 5 degrees to shun.
      4, overvoltage counterclockwise rotation overvoltage adjustment potentiometer, so that the indicator light-emitting diodes, and then clockwise about 5 degrees.

Specifications:
      Voltage build: When remanence greater than 4V25Hz automatically build pressure
      Input Power: AC 190 ~ 260V 50 / 60Hz
      Output: Voltage: 90V DC maximum (when the input AC 207V pm)
                    Current: 4A (continuous) 6A10S (instantaneous)
      Frequency compensation: Built-in engine revolutions decrease the output frequency of the protective circuit voltage fall
      Adjusted rate: better than 1%

       Patented design: ultra-low voltage from magnetic, fast response, voltage more stable. The key loop using military-grade high stability components, temperature drift of less than 0.05% / ℃. Multiple independent protection circuit design, more safe and reliable.
       We promise: quality issues in a lose three!