1 00:00:19,063 --> 00:00:23,125 Relay Settings in the "Overcurrent" Room – Part 4 2 00:00:23,516 --> 00:00:30,859 To perform the “Overcurrent Directional” test, first select “Test Object” from the top toolbar. 3 00:00:31,172 --> 00:00:37,265 . Then, in the “Device” section of the tree diagram, enter the “I Primary” and “I Secondary” values 4 00:00:37,891 --> 00:00:43,593 , which represent the “CT ratio”. Make sure these values match exactly 5 00:00:43,671 --> 00:00:48,514 any mismatch between them will result in incorrect test outcomes. 6 00:00:48,672 --> 00:00:54,140 After double-clicking on the "Over Current" block in the "Relay Parameters" page 7 00:00:54,531 --> 00:00:59,296 , go to the "Relay Behavior"section and select the "Directional" option. 8 00:00:59,688 --> 00:01:05,312 Next, in the "VT Connection" section, set the direction of the VT 9 00:01:05,547 --> 00:01:12,109 and in the "Start Point Connection CT" section, define the direction of the CT star point. 10 00:01:12,422 --> 00:01:18,515 Be aware that any mismatch in these settings compared to the relay configuration 11 00:01:18,672 --> 00:01:25,000 can cause a “180-degree phase shift” between the device settings and the relay. 12 00:01:25,703 --> 00:01:34,140 After configuring the current, time, and angle tolerances in the "Relay Parameters" section, go to the "Element" area. 13 00:01:34,453 --> 00:01:40,234 Once you've entered the desired Stages, you need to specify the relay protection direction 14 00:01:40,702 --> 00:01:49,764 either "Forward" or "Reverse"—in the "Direction" field. Next, under the "Define Element Directional Behavior" tab 15 00:01:50,391 --> 00:01:59,531 , input the values for Maximum Torque Angle and Sector Opening based on the "RCA-90" method 16 00:01:59,688 --> 00:02:07,968 or the formula "(90 – Setting Angle) - 90". The method for calculating these parameters 17 00:02:08,193 --> 00:02:13,427 will be explained in the videos related to protection function testing. 18 00:02:13,818 --> 00:02:20,302 In Directional mode, a Directional Plane is added to the page, allowing you to visualize the range 19 00:02:20,771 --> 00:02:24,052 within which the relay provides protection 20 00:02:24,599 --> 00:02:34,833 In the "View Resulting Characteristic" tab, you can see both the overall characteristic curve and the “Directional Plane” diagram side by side 21 00:02:35,693 --> 00:02:44,130 . Note that if you have multiple directional “Stages”, each with a different Pick-Up current and operation time 22 00:02:44,365 --> 00:02:53,896 they will be shown with different colors on the characteristic curve—based on the color assigned to each one in the table above 23 00:02:55,303 --> 00:03:02,021 To display the “Directional” characteristic curve, also known as the Directional Plane, 24 00:03:02,412 --> 00:03:11,708 , and to add test points, select "Medium Detail View" from the top toolbar, then place your test points directly on the curve. 25 00:03:12,959 --> 00:03:18,661 If the relay’s “Config” allows for exporting an “XRIO” file 26 00:03:19,053 --> 00:03:24,209 another way to create the relay’s characteristic curve is by using this “XRIO” file. 27 00:03:25,693 --> 00:03:32,724 To do this, first select "Test Object" from the top toolbar, then click on "Import From List". 28 00:03:33,037 --> 00:03:39,755 In the "Search" field, specify the relay “Template” type—for example, here we’ll select "7UT613". 29 00:03:39,912 --> 00:03:48,349 Next, go to the "File" section and choose "Load Relay Setting". 30 00:03:48,818 --> 00:03:58,740 Under "Relay Config Type", select the “XRIO” format, and then load the “XRIO” file into the “Config File Path”. 31 00:03:59,365 --> 00:04:08,740 To ensure the imported data is correct, you can review the entered parameters using the tree diagram in this section. 32 00:04:09,211 --> 00:04:17,257 . If needed, use the "Reference Map" to check the parameter values that affect relay operation. 33 00:04:17,648 --> 00:04:25,773 If any discrepancies are found compared to the relay’s actual settings, make the necessary corrections.