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    SINCRO Voltage Regulator BL4 U

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    Code 3008025 - 155239


    - A terminal strip (10 terminals)

    - A voltage trimmer

    - A stability trimmer

    - An under frequency trimmer

    - A frequency selection DIP switches

    - Electric protection with fuse.

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    • Política de seguridad High quality 100% original products.
    • Delivery Policy Express shipping 24/48 hours
    • Return policy Check our return policy in detail
    Métodos de pago aceptados

    It replaces to:

    • BL4
    • BL4B
    • BL4C

    SINCRO BL4-U is a half-wave phase-controlled thyristor type Automatic Voltage Regulator (AVR) and is part of the alternator excitation system.

    In addition to the regulation of the alternator voltage, BL4-U circuitry includes under-speed protection features.

    Excitation power is derived directly from the alternator terminals.

    Positive voltage builds up from residual levels is ensured by the use of efficient semiconductors in the power circuitry of AVR BL4-U.

    AVR BL4-U is connected with the main stator windings and the exciter field windings to provide closed-loop control of the output voltage.

    In addition to being powered from the main stator, AVR BL4-U also derives a sample voltage from the output windings for voltage control purposes. In response to this sample voltage, AVR BL4-U controls the power fed to the exciter field, and hence the main field, to maintain the machine output voltage within the specified limits, compensating for load, speed, temperature and power factor of the alternator.

    A frequency measuring circuit continually monitors the alternator output and provides output under-speed protection of the excitation system, by reducing the output voltage proportionally with speed below a pre-settable threshold.

    A manual adjustment is provided for the factory setting of the under frequency roll-off point, (UF). This can easily be changed to 50 or 60 Hz with two dip switches.

    Provision is made for the connection of a remote voltage potentiometer, allowing the user fine control of the alternator's output.


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    SINCRO Voltage Regulator BL4 U

    Save 5%