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  1. Knoll149

    Motor Relay Settings - Medium Voltage

    I will double check the design code, also Need to confirm RTD locations. I agree they are typically not in rotor. I do not see any comment from dpc about stator vs rotor temp? Why does rotor temp get more elevated than stator during starting?
  2. Knoll149

    Motor Relay Settings - Medium Voltage

    I have SEL-710 application and we're using stator/rotor/ambient RTD settings. We have enabled TRIP points for these RTD's per motor manufacturer data sheet. Is it still necessary to include time between starts & starts per hour lockout protection since the RTD's protect the motor against over...
  3. Knoll149

    Switchgear Redundant DC Battery System

    We are currently working on bids and have no issue providing the ATS, I'm just trying to educate myself so if a customer asks my recommendation I have an opinion. Also, the customer put the responsibility of designing the DC system on the switchgear manufacturer.
  4. Knoll149

    Switchgear Redundant DC Battery System

    I have a customer wanting a fully redundant battery system, their design is each battery feeds and ATS which then feeds a DC distribution panel out to the switchgear loads. I'm looking for thoughts or white papers on their design vs. paralleling two batteries directly to the DC panel & having...

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