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  1. FrankieAugust

    SCR Phase Angle Waveform

    Hi all, I am controlling a rectifier (AC to DC) for a sintering process with a SCR phase angle control. Everything is normal at the beginning. But things go wrong when the SCR sending output command 93% or higher. Noise is coming out from the rectifier and then Eearth Fault Relay tripped the...
  2. FrankieAugust

    Current Leakage at 95% SCR Phase Control in Vacuum Sintering Press Process

    Hi all, I am facing power source tripped due to current leakage in my Vacuum Sinter Press machine. The scenerio is below: Incoming power: 3 Phase 415, 800A, no neutral Rectifier: 500kVA to convert the AC to DC 4.6V Rectifier frame is connected to ground. The SCR control mode is phase...
  3. FrankieAugust

    ETAP Convert to SKM, Which Utility Data Is Correct

    Hi all, I am trying to convert a project file from ETAP to SKM. Below is the ETAP utility operating value and also SC value. Which value I should key in to SKM setting? Should be SC value, right? The analysis should consider the higher current that go the system. Correct me if I am wrong.
  4. FrankieAugust

    SKM Arc Flash Analysis Question: TCC and Analysis Result

    Hi all, I am new to SKM and arc flash analysis. I am currently trying to convert a project from ETAP to SKM PTW. After did the conversion and run the analysis, the result puzzle me. The result after transformer is 33.52 Cal/cm^2. After the LV-51ACB, the AF IncidentEnergy dropped to 1.32...

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