Step1 Press the enter and go to setting 2 Step2 Enter password 0000 Step3 Change the CT & PT primary and secondary ratio. After that press the enter and press exit button.
Knee point voltage of current transformer secondary side, the value of voltage at which when the applied across current transformer secondary side is increased by 10 percent, causes the exciting current to increase by 50 percent.
This block diagram represent how the current and voltage signal flow in numerical relay used in power system protection.
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