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    Smart-UPS VT-Galaxy 3500; Bypass Not Available Input Freq/Volt Out Of Range, Output: Inverter sync. to bypass alarms

    Issue:
    Smart-UPS VT-Galaxy 3500; Bypass Not Available Input Freq/Volt Out Of Range alarms
     
    Product Line:
    Smart-UPS VT-Galaxy 3500-AIS3000
     
    Environment:
    All models, all serial numbers
     
    Cause:
    The frequency or voltage is out of acceptable range for bypass operation. This message occurs when the UPS is online, and indicates that static Bypass operation may not be available while the alarm is active.
     
    If the Bypass frequency is out of range, the UPS should not allow you to command the UPS to bypass. If the UPS allows you to enter Static Bypass operation, it was because the bypass frequency was already within tolerance again, even if the alarm was still present in the display (alarms are displayed for 20> seconds) Correct the input voltage to provide acceptable voltage or frequency.
     
    Bypass Sync Error: Input frequency range for the PFC is 40 Hz - 70Hz. As long as the Mains frequency is inside that window, the UPS should be in normal operation.
     
    a) Mains distortion will activate as well that alarm (even more frequently than in SYPX)
    b) The input frequency range is configurable, as it was in SYPX, so you can have:
     
    For 60 Hz systems:
    60 HZ +/- 0,1%
    57 Hz - 63 Hz
    50 Hz - 70 Hz
     
    For 50 Hz systems:
    50 HZ +/- 0,1%
    47 Hz - 53 Hz
    40 Hz - 60 Hz
     
    Bypass input voltage threshold:
    NAM 208V MIN = 187.2 VAC
    NAM 208V MAX = 228.8 VAC
     
    Output: Inverter sync to bypass error:
    The inverter is synchronized to the bypass. The phase difference between the output PLL and the bypass voltage is above a predefined limit and the system will not be able to go to bypass.

     
    Resolution:
    When AC mains returns you may get a informational event for; Mains no longer prevents UPS from switching to bypass.
     

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