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A phase out of range condition exists on the bypass input | Data Center & Facility 3 Phase UPS

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A phase out of range condition exists on the bypass input

Discussion in Data Center & Facility 3 Phase UPS started by seyi , 9/3/2016 12:07 PM
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A phase out of range condition exists on the bypass input

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  • dudu2030

    Hello, 

    the power room of my office has 4 UPS connected as follows

    2 units of MGE Galaxy 5500 UPS 80kVA connected in parallel

    and 

    2 units of MGE Galaxy 5500 UPS 40kVA connected in parallel, 

    strangely, i observed the following alerts in the last couple of days which appears to be in-consistent. All 4 ups are connected to the same Stabilizer and power source.

    80kVA UPS#1: the latest event “A phase out of range condition exists on the bypass input” took place on the 14th of August

    80kVA UPS #2: the latest event “A phase out of range condition exists on the bypass input” took place on the 2nd of August

    40kVA UPS #1: the latest event “A phase out of range condition exists on the bypass input” took place on the 29th of August

    40 kVA UPS #2: the latest event “A phase out of range condition exists on the bypass input” took place on the 25th of July

    in the past, i usually received the alerts from all 4 ups at the same time. 

    please note that my installation is in Africa where power isn't so stable, hence we switch to a standby generator during power outages.

    please what do you advise?

  • Haseeb
    This discussion is marked as answered

    Hi

    The UPS is indicating that your input supply is outside of tolerances.  This means you would need to check your input supply for the correct rated voltage/frequency levels.  You state yourself that the "power isn't so stable".  Hence I would recommend you to get your local electrician to carry out a full power quality analysis/report on your input supply.

    If you have any further questions, please do not hesitate to ask me.

    Kind Regards

    Haseeb

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