THE OPERATING CHARACTERISTIC ANGLE: A - Forward direction : - B - Reverse direction : - default for IEC Normal Inverse is: A = 0.14 P = 0.02 C = 1 B = 0 Step 1 (IN1>) Kt = 0.2 Iinjected = 2 * Iinjected = 4 * Iinjected = 10 * Isetting Isetting Isetting Phase Isetting t t t t t t expected measured expected measured expected measured R 2 1 0.6 Y 0.2 2 1 0.6 B 2 1 0.6 Step 2 (IN2>) Kt = 0.2 Iinjected = 2 * Iinjected = 4 * Iinjected = 10 * Isetting Isetting Isetting Phase Isetting t t t t t t expected measured expected measured expected measured R 2 1 0.6 0.5 Y 2 1 0.6 B 2 1 0.6 DIFFERENTIAL PROTECTION MEASUREMENTS :
THE OPERATING CHARACTERISTIC ANGLE: A - Forward direction : - B - Reverse direction : - default for IEC Normal Inverse is: A = 0.14 P = 0.02 C = 1 B = 0 Step 1 (IN1>) Kt = 0.2 Phase Isetting Iinjected = 2 * Isetting Iinjected = 4 * Isetting Iinjected = 10 * Isetting t expected t measured t expected t measured t expected t measured R 0.2 2 1 0.6 Y 2 1 0.6 B 2 1 0.6 Step 2 (IN2>) Kt = 0.2 Phase Isetting Iinjected = 2 * Isetting Iinjected = 4 * Isetting Iinjected = 10 * Isetting t expected t measured t expected t measured t expected t measured R 0.5 2 1 0.6 Y 2 1 0.6 B 2 1 0.6 DIFFERENTIAL PROTECTION MEASUREMENTS :
red670_distance___line_differential.docx