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Alternator Spare Parts

  • Stamford Automatic Voltage Regulator - AVR AS440

    Stamford Automatic Voltage Regulator - AVR AS440

    The AS440 is an analogue, 2-phase sensing, self-excited automatic voltage regulator (AVR). The AS440 incorporates Surface Mount Technology (SMT) to its design.
    The AS440 is supplied as standard to the STAMFORD® S4 and STAMFORD® HC5 alternators and is an option for the STAMFORD® UC22 and UC27 alternators.

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  • Stamford Automatic Voltage Regulator - AVR SX460

    Stamford Automatic Voltage Regulator - AVR SX460

    The SX460 is an analogue, 2-phase sensing, self-excited automatic voltage regulator (AVR). The AVR is linked with the main stator windings and the exciter field windings to provide closed loop control of the output voltage.
    The SX460 is most commonly used on Stamford alternator UC range and are supplied as standard to the UC22 and UC27 alternators.

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  • Leroy Somer Automatic Voltage Regulator - AVR R220

    Leroy Somer Automatic Voltage Regulator - AVR R220

    Leroy Somer AVR R220, for shunt alternators.
    For LSA40 & LSA42.3 series alternators.
    R220 is an analog AVR with power controled by transistors. It is designed for small alternators with a SHUNT excitation.
    R220 controls the excitation current in order to maintain the output voltage of the alternator. R220 is performant in terms of voltage regulation, simple to set , to use and is reliable.
    It is in compliance with I.E.C. 60034-1 standard and U.L. 508 / C.S.A. approved.

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  • Leroy Somer Automatic Voltage Regulator - AVR R250

    Leroy Somer Automatic Voltage Regulator - AVR R250

    Leroy Somer AVR R250, for shunt alternators.
    For LSA44.3, LSA46.3 & LSA47.2 series alternators.​
    R250 is an analog AVR with power controled by transistors. It is designed for small alternators with a SHUNT excitation.
    R250 controls the excitation current in order to maintain the output voltage of the alternator. R250 is performant in terms of voltage regulation, simple to set, to use and is reliable.
    It is in compliance with I.E.C. 60034-1 standard and U.L. 508 / C.S.A. approved.

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Besides engine parts, Bidirection Power also provides a series of high quality and durable alternator parts to meet clients' need.

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