Stabilizing Resistor Calculation
Stabilizing Resistor Calculation
Stabilizing Resistor Calculation
Magnetizing current of the CT at the voltage Ukn Iekn = 100 mA L&T to put the value
Knee point voltage of CT Ukn = 20 V L&T to put the value
Motor earth fault setting = 15 %
CT Ratio n = 300 -
Startup current (primary value) of the motor Istart = 2088 A
Resistance of the longest loop of the CT secondary circuit Rm = 0.18 Ω
Primary current at which relay starts Iprim = 43.5 A
Start current(secondary value) of the earth fault protection Is = 0.09735 A
Magnetizing current of the CT at the voltage Ukn Iekn = 100 mA L&T to put the value
Knee point voltage of CT Ukn = 20 V L&T to put the value
Motor earth fault setting = 15 %
CT Ratio n = 300 -
Startup current (primary value) of the motor Istart = 1728 A
Resistance of the longest loop of the CT secondary circuit Rm = 0.18 Ω
Primary current at which relay starts Iprim = 36 A
Start current(secondary value) of the earth fault protection Is = 0.08 A
Magnetizing current of the CT at the voltage Ukn Iekn = 100 mA L&T to put the value
Knee point voltage of CT Ukn = 20 V L&T to put the value
Motor earth fault setting = 15 %
CT Ratio n = 250 -
Startup current (primary value) of the motor Istart = 1440 A
Resistance of the longest loop of the CT secondary circuit Rm = 0.18 Ω
Primary current at which relay starts Iprim = 30 A
Start current(secondary value) of the earth fault protection Is = 0.08 A
Magnetizing current of the CT at the voltage Ukn Iekn = 100 mA L&T to put the value
Knee point voltage of CT Ukn = 20 V L&T to put the value
Motor earth fault setting = 15 %
CT Ratio n = 200 -
Startup current (primary value) of the motor Istart = 1188 A
Resistance of the longest loop of the CT secondary circuit Rm = 0.18 Ω
Primary current at which relay starts Iprim = 24.75 A
Start current(secondary value) of the earth fault protection Is = 0.08 A