Answer / harikesh yadav

If VFD Motor run 50HZ Full Speed then VFD saved energy
From starting Jurk Load because not taken jurk load
starting time.

Answer / nagaraj

VFD stands for variable frequency drive.Change in frequency changes the RPM , which is directly proportional.

Synchronous speed = 120 x f/p

Here 120 is constant, f stands for frequency and p for no. of poles. The operating frequency in INDIA is 50 Hz.

Operating frequency is set at 50Hz, motor runs at rated speed, so no savings in power consumption.

Answer / mayukh maiti

IF THE SUPPLY VOLTAGE IS 50 HZ THEN NO ENERGY IS SAVED BY
THAT V.F.D

I HAVE A INCOMING 100A MCCB TPN 25KA, CABLE LENGHT OF 80M 70MM CABLE SIZE FROM MAIN SUBBOARD TO NEW DB.BASE ON THE FAULT LEVEL SETTING OF 45KA.I WOULD LIKE TO FIND OUT 25KA ENOUGH KA. APPRECIATE IF SOMEBODY CAN ASSIST ME WITH FORMULA FOR THIS. FRM: JEFF

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