diff options
Diffstat (limited to '1055/CH14/EX14.1/ch14_1.sce')
| -rwxr-xr-x | 1055/CH14/EX14.1/ch14_1.sce | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/1055/CH14/EX14.1/ch14_1.sce b/1055/CH14/EX14.1/ch14_1.sce new file mode 100755 index 000000000..a7b2cb0fb --- /dev/null +++ b/1055/CH14/EX14.1/ch14_1.sce @@ -0,0 +1,10 @@ +// To determine the time of operation of relay .
+clear
+clc;
+If=4000;// fault current
+I=5*1.25;// operating current of relay
+CT=400/5;// CT ratio
+PSM=If/(I*CT);// plug setting multiplier
+mprintf("PSM=%.3f\n",PSM);
+mprintf("operating time for PSM=8 is 3.2sec.\n");
+mprintf("actual operating time = 1.92 sec.");
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