1 00:00:19,219 --> 00:00:21,250 "Pick Up - Drop Off" Window 2 00:00:22,109 --> 00:00:26,015 In this tab, the relay's "Pick Up - Drop Off" test is performed 3 00:00:26,562 --> 00:00:30,702 The "Test Point" section is where the test points are configured. 4 00:00:31,016 --> 00:00:41,093 If you want to carry out the "Pick Up - Drop Off" test for a "Non-directional" relay, you need to select "Current" from the "Target type" section. 5 00:00:41,563 --> 00:00:46,485 For angle-based "Pick Up - Drop Off" testing, select "Angle" instead. 6 00:00:46,719 --> 00:00:51,875 Start by selecting "Current" to perform the test for a "Non-directional" relay. 7 00:00:52,891 --> 00:00:57,031 In the "Pickup" field, the relay's pickup current is set 8 00:00:57,344 --> 00:01:04,218 meaning that, ideally, the relay should pick up at this current. Here, it is set to 1 ampere 9 00:01:04,688 --> 00:01:10,546 In the "Reset Ratio" field, the ratio of the relay’s drop-off current to its pickup 10 00:01:10,859 --> 00:01:16,484 current is defined. In this case, it's set to 0.95. 11 00:01:16,796 --> 00:01:20,468 . Note that once the "Reset Ratio" is configured 12 00:01:20,781 --> 00:01:27,968 the software automatically calculates the relay’s drop-off current and displays it in the "Drop Off" field 13 00:01:28,984 --> 00:01:33,437 The "Angle" field defines the angle of the pickup current. 14 00:01:33,828 --> 00:01:40,781 This parameter is not relevant for non-directional relays, so depending on the test type, 15 00:01:40,938 --> 00:01:44,376 , the user can set it to any desired value 16 00:01:44,922 --> 00:01:50,625 Now, since the "Pickup - Drop Off" test uses both increasing and decreasing Step Ramps, 17 00:01:50,859 --> 00:01:55,312 the time intervals between each step must be configured 18 00:01:55,625 --> 00:02:06,250 These are set in the "Pickup Δt" and "Drop Off Δt" fields, which by default are both set to 100 milliseconds 19 00:02:07,006 --> 00:02:16,849 The "ΔI" field determines the current increment for each step, which in this case is set to 20 milliamperes 20 00:02:17,162 --> 00:02:24,115 Next, the "Pickup Start" field sets the initial current value for the ramp signal during the test 21 00:02:24,662 --> 00:02:28,880 By default, this is set to 800 milliamperes 22 00:02:29,115 --> 00:02:34,818 meaning the ramp will begin at 800 milliamperes and increase from there 23 00:02:35,443 --> 00:02:40,130 Additionally, the final current values of the ramp must also be defined. 24 00:02:40,443 --> 00:02:47,630 The end value for "Pickup" is set in the "Pickup End" field, and for "Drop Off", in the "Drop Off End" field 25 00:02:48,256 --> 00:02:58,177 For example, in this case, the final current for "Pickup" is set to 1.2 amperes, and for "Drop Off", it is 800 milliamperes 26 00:02:59,115 --> 00:03:08,568 Now, based on the values configured in the "Test Point" section, the software applies an increasing ramp for the Pickuptest. 27 00:03:08,881 --> 00:03:15,287 This ramp starts from 800 milliamperes and goes up to 1.2 amperes 28 00:03:15,443 --> 00:03:20,208 with 20-milliampere steps and 100-millisecond intervals. 29 00:03:20,521 --> 00:03:25,208 The relay is then expected to respond with a Pickup signal 30 00:03:25,364 --> 00:03:31,301 .Next, a decreasing ramp is applied with the same 20-milliampere steps 31 00:03:31,615 --> 00:03:36,224 and 100-millisecond intervals until the relay drops 32 00:03:36,771 --> 00:03:41,927 drops off. These ramp signals can be visualized in the "Signal View" section 33 00:03:42,553 --> 00:03:48,803 In the "Fault Type" section, as previously mentioned, the type of fault can be selected. 34 00:03:50,209 --> 00:03:59,818 Then, by clicking the "Add" button, this test point is added both to the relay’s characteristic curve in the "Overcurrent Characteristic" window 35 00:04:00,209 --> 00:04:06,302 and as a new row in the "Pickup - Drop Off" table at the bottom of the screen 36 00:04:06,615 --> 00:04:16,068 In the "Detail" section, once the test is complete, the relay’s actual pickup current is shown in the "Pickup act" field 37 00:04:17,099 --> 00:04:22,411 and the actual drop-off current is displayed in the "Drop Off act" field 38 00:04:23,193 --> 00:04:29,521 There are two important points to keep in mind when performing the "Pickup - Drop Off" test. 39 00:04:30,068 --> 00:04:34,599 This test is performed at only one point for each "Fault Type". 40 00:04:35,224 --> 00:04:42,568 Immediately after receiving the Pickup contact, the decreasing ramp begins from the "Pickup End" value. 41 00:04:42,803 --> 00:04:48,193 However, if you want the ramp-down to start from the exact point 42 00:04:48,349 --> 00:04:57,255 where the relay picked up, you need to go to the "Settings" tab and check the option "Continue Last State Amplitude". 43 00:04:58,818 --> 00:05:05,615 For "Directional" testing in this section, after selecting the "Test Object" from the top toolbar 44 00:05:06,006 --> 00:05:11,630 , right-click on the "Overcurrent" block and go to the "Relay Parameters" tab. 45 00:05:12,021 --> 00:05:19,208 There, set the relay’s directional function to "Directional".Next, in the "Elements" tab 46 00:05:19,521 --> 00:05:30,146 you can create, for example, two stages with different pickup current values. In the "Direction" column for both stages, select "Forward". 47 00:05:35,615 --> 00:05:40,068 Then, open the "Define Element Directional Behavior" tab. 48 00:05:40,615 --> 00:05:46,474 In the "Trip Sector Definition" section, select the "RCA-90" method 49 00:05:46,631 --> 00:05:53,271 and set the "Maximum torque angle" to -60 degrees and the "Sector opening" 50 00:05:53,506 --> 00:06:00,302 to 180 degrees, then confirm the settings.To view the "Directional Plane" 51 00:06:01,084 --> 00:06:05,849 and select test points, open the "Medium Detail View" window. 52 00:06:06,787 --> 00:06:14,599 In this window, the relay’s operating range for different stages is displayed using color-coded sectors. 53 00:06:15,146 --> 00:06:24,208 You’ll notice that the sector is defined between 30 degrees (calculated as 90 minus 60) and -150 degrees (90 minus 60, then negative) 54 00:06:25,271 --> 00:06:35,193 In the "Pickup - Drop Off Data" section, the selected test line from the test lines created in the "Test View" table is displayed. 55 00:06:36,521 --> 00:06:45,896 On the left-hand side of this window, you’ll find a set of tools for interacting with the graph, such as zooming and panning. 56 00:06:47,303 --> 00:06:55,583 You can also right-click on the graph to view "Test Information" and "Result Information" for each test directly in this window. 57 00:06:57,771 --> 00:07:02,146 Now, from the "Target type" field, "Angle" is selected. 58 00:07:02,615 --> 00:07:08,630 This means that the Ramp states generated by the software will apply to the angle. 59 00:07:09,256 --> 00:07:17,927 .In this mode, the fault current magnitude and its angle are entered in the "Current" and "Angle" fields, respectively. 60 00:07:18,396 --> 00:07:25,974 The angular step size for each increment is set in the "Δ∅" field. 61 00:07:26,912 --> 00:07:31,911 The starting angle for the Ramp state is entered in the "Pickup Start" field 62 00:07:32,928 --> 00:07:38,240 and the final angle for this ramp is set in the "Pickup End" field. 63 00:07:38,943 --> 00:07:45,739 Finally, the ending angle for the decreasing ramp state is set in the "Drop Off End" field. 64 00:07:46,756 --> 00:07:50,896 When performing this test, you need to carry it out twice 65 00:07:51,365 --> 00:07:57,693 once at the upper angle limit and once at the lower angle limit of the Pickup current. 66 00:07:58,084 --> 00:08:02,380 . So, you must create two search lines at the boundary points 67 00:08:02,615 --> 00:08:08,943 The first search line is configured with a Pickup current of 1 ampere and an angle of 30 degrees 68 00:08:09,334 --> 00:08:15,427 You’ll see that the related test fields on the right are automatically populated by the software. 69 00:08:16,131 --> 00:08:21,208 Note that these values can be manually adjusted by the user 70 00:08:21,531 --> 00:08:29,422 In the graphical display of the "Medium Detail View" window, the selected angular test range is shown as a black arc 71 00:08:30,516 --> 00:08:35,828 By clicking the "Add" button, this test line is added to the "Pickup - Drop Off" test table. 72 00:08:36,141 --> 00:08:43,015 To create the second test line, set the angle to -150 degrees in the "Angle" field 73 00:08:43,406 --> 00:08:48,093 and this line will also be added to the list of test lines. 74 00:08:48,406 --> 00:08:55,906 As you select each of the created test lines, their details are displayed in the "Pickup - Drop Off Data" window.