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Marathon SE250 Automatic Voltage Regulator
Compare with the original Marathon SE250

 Marathon SE250 AVR

REPLACEMENT MARATHON SE250 AVR FOR MARATHON ALTERNATORS

MARATHON GPN009


** Please note the SE250 R has been superseded by the SE350 R, same fit, form and function. When ordering the SE250 R online a SE350 R will be shipped in its place.

 

General Description / Specifications

 

- SE 250 Original Marathon

Features


  • < ±1% Regulation
  • 50 / 60 Hz Selectable
  • Under Frequency Protection
  • Built-in High Breaking Capacity Fuse
  • EMI Suppression
  • Specifications

    Sensing & Power Input Voltage 120 (90 ~ 132) / 240 (171 ~ 264) VAC
    Dip switch selectable
    Frequency 50 / 60 Hz selectable
    Output Voltage Max 37 VDC @ 120 VAC input
    Max 74 VDC @ 240 VAC input
    Current Continuous 4A
    Intermittent 7A for 60 sec.
    Voltage Regulator Rate  < ±1% (with 4% engine governing)
    Voltage Build  Residual volts at AVR terminal >3.5 VAC
    External Voltage Adjustment  ±5% @ 1 K Ω 1 Watt
    ±10% @ 2 K Ω 1 Watt
    Unit Power Dissipation  Max 8 Watt
    EMI Suppression  Internal electromagnetic interference filtering
    Under Frequency protection
    (UFRO)  60Hz system presets knee point at 55 Hz*

    Environment


    Mechanical Vibration 1.3G @ 5 ~ 26 Hz   5.0G @ 52 ~ 1000 Hz
    Relative Humidity < 95%
    Operating Temperature -40 ~ 60 °C
    Storage Temperature -65 ~ 85 °C


    AVR Controls Functions


    VOLT Voltage Adjustment
    STAB Stability Adjustment
    U/F UFRO Knee Point Set

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