T Iph> time delay address (2621) 3I0> pick up address (2622), T 3I0> time delay address (2623) SETTING MEASURED VALUES parameter CURRENT TIME (sec) R (A) Y (A) B (A) TIME (sec) (A) T Iph> Iph> T Iph> T 3I0> 3I0> T 3I0> T Iph>>0.0 Iph>> T Iph>>0.0 T 3I0> 0.0 3I0>> T 3I0> 0.0 Overcurrent Stages IP, 3I0P for Inverse-time Overcurrent Protection with IEC Characteristics Calculated Time Measured Value Cheractristic Phase T.M.S Formula 2 Is Sec R T = 0.14TP / {( I/IP )0.02 – 1} Y 0.1 1.003 B INVERSE N R T = 13.5 TP / {( I/IP ) – 1} Y VERY 0.2 2.7 B INVERSE N R T = 80 TP / {( I/IP )2 – 1} Y EXTREMELY 0.1 2.67 B INVERSE N R T = 120TP / {( I/IP ) – 1} Y 0.2 24 LONG INVERSE B N
T Iph> time delay address (2621) 3I0> pick up address (2622), T 3I0> time delay address (2623) parameter SETTING MEASURED VALUES CURRENT (A) TIME (sec) R (A) Y (A) B (A) TIME (sec) Iph> T Iph> T Iph> 3I0> T 3I0> T 3I0> Iph>> T Iph>>0.0 T Iph>>0.0 3I0>> T 3I0> 0.0 T 3I0> 0.0 Overcurrent Stages IP, 3I0P for Inverse-time Overcurrent Protection with IEC Characteristics Cheractristic Phase T.M.S Calculated Time 2 Is Formula Measured Value Sec INVERSE R 0.1 1.003 T = 0.14TP / {( I/IP )0.02 – 1} Y B N VERY INVERSE R 0.2 2.7 T = 13.5 TP / {( I/IP ) – 1} Y B N EXTREMELY INVERSE R 0.1 2.67 T = 80 TP / {( I/IP )2 – 1} Y B N LONG INVERSE R 0.2 24 T = 120TP / {( I/IP ) – 1} Y B N
7sd_line_differentrial_relay_test.docx