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APC Symmetra PX160 short-time load drop | Data Center & Facility 3 Phase UPS

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APC Symmetra PX160 short-time load drop

Discussion in Data Center & Facility 3 Phase UPS started by Nick , 3/4/2019 1:54 PM
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APC Symmetra PX160 short-time load drop

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  • n.y.prokopets

     

    Hi, All.

    There is one small (up 70kW of IT Load) DC with two independent utility source followed by ATys m ATS and Symmetra PX160 UPS for protect critical load.  

    Some weeks ago, all IT load was dropped by Symmetra for 5-10 seconds.
    This incident coinced with some issues at 10kV side and loss of Source 1 (for 2-3 hrs).
    Some anomalies also expirienced on Source 2 at the same time (input power troubles were recovered in CRACS control unit logs), but no longer than 20-30 second and therefore wasn't registered by DataCenter Expert monitoring system (poll period = 1 minutes).

    All load (IT under UPS and CRACS without UPS) was on the Source 2 at the time of issues.

    So, all critical load was unexpectedly dropped for short time period, but no alarm events there found at Symmetra's PX display as no events in event.txt file downloaded from NMC. Only usual NTP updates..

    Symmetra MIM logs shows some alarm messages (quoted below)
    Any idea or suggestions? Thanx
     0600D07F EXSG  D Operate Q003 ok                          YY/MM/DD 09:47:14 654
    0900A05E IM    A IM oper. mode: Shift to ONLINE           YY/MM/DD 09:47:14 628
    0100D13E IM    D TIM has SBS on                           YY/MM/DD 09:47:14 628
    0100A12E IM    A TIM has Inverter on                      YY/MM/DD 09:47:14 628
    0100D57E IM    D Inverter sync. error                     YY/MM/DD 09:47:12 672
    0280D24E PM 08 D Output RMS voltage fail                  YY/MM/DD 09:47:11 984
    0280D23E PM 08 D Inverter RMS voltage fail                YY/MM/DD 09:47:11 984
    0270D24E PM 07 D Output RMS voltage fail                  YY/MM/DD 09:47:11 931
    0270D23E PM 07 D Inverter RMS voltage fail                YY/MM/DD 09:47:11 931
    0260D24E PM 06 D Output RMS voltage fail                  YY/MM/DD 09:47:11 877
    0260D23E PM 06 D Inverter RMS voltage fail                YY/MM/DD 09:47:11 877
    0250D24E PM 05 D Output RMS voltage fail                  YY/MM/DD 09:47:11 825
    0250D23E PM 05 D Inverter RMS voltage fail                YY/MM/DD 09:47:11 825
    0240D24E PM 04 D Output RMS voltage fail                  YY/MM/DD 09:47:11 772
    0240D23E PM 04 D Inverter RMS voltage fail                YY/MM/DD 09:47:11 772
    0500A32E SBS   A Backfeed Contactor closed                YY/MM/DD 09:47:11 704
    02A0D24E PM 10 D Output RMS voltage fail                  YY/MM/DD 09:47:11 672
    02A0D23E PM 10 D Inverter RMS voltage fail                YY/MM/DD 09:47:11 672
    0100D04E IM    D Output voltage error                     YY/MM/DD 09:47:11 624
    0290D24E PM 09 D Output RMS voltage fail                  YY/MM/DD 09:47:11 619
    0290D23E PM 09 D Inverter RMS voltage fail                YY/MM/DD 09:47:11 619
    0100D02E IM    D Bypass voltage error                     YY/MM/DD 09:47:09 668
    0240A24E PM 04 A Output RMS voltage fail                  YY/MM/DD 09:47:09 420
    0240A23E PM 04 A Inverter RMS voltage fail                YY/MM/DD 09:47:09 420
    0500D32E SBS   D Backfeed Contactor closed                YY/MM/DD 09:47:09 352
    02A0A24E PM 10 A Output RMS voltage fail                  YY/MM/DD 09:47:09 315
    02A0A23E PM 10 A Inverter RMS voltage fail                YY/MM/DD 09:47:09 315
    0290A24E PM 09 A Output RMS voltage fail                  YY/MM/DD 09:47:09 263
    0290A23E PM 09 A Inverter RMS voltage fail                YY/MM/DD 09:47:09 263
    0280A24E PM 08 A Output RMS voltage fail                  YY/MM/DD 09:47:09 210
    0280A23E PM 08 A Inverter RMS voltage fail                YY/MM/DD 09:47:09 210
    0270A24E PM 07 A Output RMS voltage fail                  YY/MM/DD 09:47:09 158
    0270A23E PM 07 A Inverter RMS voltage fail                YY/MM/DD 09:47:09 158
    0260A24E PM 06 A Output RMS voltage fail                  YY/MM/DD 09:47:09 105
    0260A23E PM 06 A Inverter RMS voltage fail                YY/MM/DD 09:47:09 105
    0250A24E PM 05 A Output RMS voltage fail                  YY/MM/DD 09:47:09 053
    0250A23E PM 05 A Inverter RMS voltage fail                YY/MM/DD 09:47:09 053
    0600A07F EXSG  A Operate Q003 ok                          YY/MM/DD 09:47:08 966
    0900A07E IM    A IM oper. mode: Shift to TEMP BYPASS      YY/MM/DD 09:47:08 924
    0100A13E IM    A TIM has SBS on                           YY/MM/DD 09:47:08 924
    0100D12E IM    D TIM has Inverter off                     YY/MM/DD 09:47:08 924
    0100A57E IM    A Inverter sync. error                     YY/MM/DD 09:47:08 510



  • wpasquil

    Hi,

    Sorry for the inconvenience. I have asked that someone from regional 3 phase support team contact you concerning this matter.

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