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Hi All, We are going to have coupling Transformer for Static var generator and the Voltage Ratio is 220/33 kV. I have come across OEM GTP HV -LV Impedance is around 25% , is any specific reason for SVG application Impedance should be Greater than 25%. what will be the difference in construction...

Hi All, I have attached screen shot of Transformer inrush current during energization, we suspect this is due to some problem in the primary circuit and checking the possibilities. Sometimes transformer gets energized without any unbalance in current among phases. Due to unbalance in current...

Hi all, I am going through a specification in which mentioned tertiary winding may be provided if it is a five limb construction and trans former vector group is YNyn0, if tertiary not considered what are the consequences for the system.

Can anybody explain power swing blocking function in a simple manner than mentioned in the manual, for example GE Relay D60.

Dear All, While calculating EMF developed across the CT secondary during fault for a through fault current , we have to consider CT internal resistance along with the connected burden or only R lead and Relay coil to be considered.

Hi, I had a requirement from end user to have a coordination time interval between two relays to be 100 ms because of numerical relays and fast tripping breakers.As per IEEE guidelines minimum coordination interval of 0.12 seconds to be considered between numerical relays excluding breaker...

I recently come across the value of X0 Ohms/KM is less than the value of X1 Ohms/KM,is it right or wrong.