1 00:00:27,153 --> 00:00:27,191 D 2 00:00:27,192 --> 00:00:27,229 Di 3 00:00:27,230 --> 00:00:27,268 Dif 4 00:00:27,269 --> 00:00:27,307 Diff 5 00:00:27,308 --> 00:00:27,346 Diffe 6 00:00:27,347 --> 00:00:27,385 Differ 7 00:00:27,386 --> 00:00:27,424 Differe 8 00:00:27,425 --> 00:00:27,462 Differen 9 00:00:27,463 --> 00:00:27,501 Different 10 00:00:27,502 --> 00:00:27,540 Differenti 11 00:00:27,541 --> 00:00:27,579 Differentia 12 00:00:27,580 --> 00:00:27,618 Differential 13 00:00:27,619 --> 00:00:27,656 Differential 14 00:00:27,657 --> 00:00:27,695 Differential C 15 00:00:27,696 --> 00:00:27,734 Differential Ch 16 00:00:27,735 --> 00:00:27,773 Differential Cha 17 00:00:27,774 --> 00:00:27,812 Differential Char 18 00:00:27,813 --> 00:00:27,850 Differential Chara 19 00:00:27,851 --> 00:00:27,889 Differential Charac 20 00:00:27,890 --> 00:00:27,928 Differential Charact 21 00:00:27,929 --> 00:00:27,967 Differential Characte 22 00:00:27,968 --> 00:00:28,006 Differential Character 23 00:00:28,007 --> 00:00:28,044 Differential Characteri 24 00:00:28,045 --> 00:00:28,083 Differential Characteris 25 00:00:28,084 --> 00:00:28,122 Differential Characterist 26 00:00:28,123 --> 00:00:28,161 Differential Characteristi 27 00:00:28,162 --> 00:00:28,200 Differential Characteristic 28 00:00:28,201 --> 00:00:28,238 Differential Characteristic 29 00:00:28,239 --> 00:00:28,277 Differential Characteristic w 30 00:00:28,278 --> 00:00:28,316 Differential Characteristic wi 31 00:00:28,317 --> 00:00:28,355 Differential Characteristic win 32 00:00:28,356 --> 00:00:28,394 Differential Characteristic wind 33 00:00:28,395 --> 00:00:28,432 Differential Characteristic windo 34 00:00:28,433 --> 00:00:28,471 Differential Characteristic window 35 00:00:28,472 --> 00:00:28,510 Differential Characteristic window: 36 00:00:28,511 --> 00:00:28,911 Differential Characteristic window: 37 00:00:28,936 --> 00:00:33,564 As mentioned before, one of the main windows of differential room is “Differential Characteristic”. 38 00:00:33,589 --> 00:00:38,934 This window shows the relay differential characteristic curve based on the settings entered in “Test Object” window. 39 00:00:38,959 --> 00:00:43,907 The top of the characteristic curve is called “Tripping” area while the bottom is called “Not trip” area. 40 00:00:43,932 --> 00:00:50,261 This means that if the test point is located at the top of the curve, the relay gives a trip otherwise it does not. 41 00:00:50,286 --> 00:00:53,744 This window has some shared and some unique features. 42 00:00:53,769 --> 00:01:07,571 The features available by right or left clicking on this window are common to all rooms and it is not necessary to explain them here but at the bottom of this window there is a gear by clicking on which some other useful options are displayed. 43 00:01:07,595 --> 00:01:13,642 By clicking on “Zoom during test”, if one or multiple “Search” lines are drawn on the characteristic curve, 44 00:01:13,666 --> 00:01:21,898 by running the test you can see that the software zooms on the areas where the test points are located and shows the found zone line. 45 00:01:21,922 --> 00:01:28,372 If you select “Optimize All” option, by changing the “Fault type”, the characteristic curve display is “Optimized”. 46 00:01:28,396 --> 00:01:33,312 By using “Pan Mode” you can move the characteristic curve diagram as desired. 47 00:01:33,336 --> 00:01:40,248 By using “Show row number” you can view the row number of any test point or test line on the characteristic curve. 48 00:01:40,272 --> 00:01:47,271 By selecting “Show all zone”, test zones of all “Search” points are marked with a circle to find the characteristic curve line. 49 00:01:47,296 --> 00:01:54,044 By selecting “Show selected zone”, only the points of the line selected from “Search line” table are marked with a circle. 50 00:01:54,068 --> 00:01:59,200 By clicking on “Show all t act point”, the operating time of the tested points is showed. 51 00:01:59,231 --> 00:02:04,450 Since maybe the points are close to each other and it is not possible to view the times clearly, 52 00:02:04,474 --> 00:02:11,464 you can use “Show selected t act point” option which shows the time of the row selected from the test points table. 53 00:02:11,488 --> 00:02:24,941 “Show all Id & Ib Act” and “Show selected t act point” options are used to show all tested “Search Test” points and the points related to the row selected from the “Search Test” table respectively. 54 00:02:24,965 --> 00:02:32,795 By selecting “Snap to grid” option, the points on the characteristic curve that are shot close to the grids snap to the grids of this page. 55 00:02:32,819 --> 00:02:40,949 By selecting “Snap to characteristic curve” option, the points on the characteristic curve that are “Shot” close to the characteristic curve grid snap to it. 56 00:02:40,973 --> 00:02:41,019 “ 57 00:02:41,020 --> 00:02:41,065 “S 58 00:02:41,066 --> 00:02:41,112 “Sh 59 00:02:41,113 --> 00:02:41,159 “Sho 60 00:02:41,160 --> 00:02:41,205 “Show 61 00:02:41,206 --> 00:02:41,252 “Show 62 00:02:41,253 --> 00:02:41,299 “Show O 63 00:02:41,300 --> 00:02:41,346 “Show Ot 64 00:02:41,347 --> 00:02:41,392 “Show Oth 65 00:02:41,393 --> 00:02:41,439 “Show Othe 66 00:02:41,440 --> 00:02:41,486 “Show Other 67 00:02:41,487 --> 00:02:41,532 “Show Other 68 00:02:41,533 --> 00:02:41,579 “Show Other P 69 00:02:41,580 --> 00:02:41,626 “Show Other Po 70 00:02:41,627 --> 00:02:41,672 “Show Other Poi 71 00:02:41,673 --> 00:02:41,719 “Show Other Poin 72 00:02:41,720 --> 00:02:41,766 “Show Other Point 73 00:02:41,767 --> 00:02:41,812 “Show Other Point” 74 00:02:41,813 --> 00:02:41,859 “Show Other Point” 75 00:02:41,860 --> 00:02:41,906 “Show Other Point” o 76 00:02:41,907 --> 00:02:41,953 “Show Other Point” op 77 00:02:41,954 --> 00:02:41,999 “Show Other Point” opt 78 00:02:42,000 --> 00:02:42,046 “Show Other Point” opti 79 00:02:42,047 --> 00:02:42,093 “Show Other Point” optio 80 00:02:42,094 --> 00:02:42,139 “Show Other Point” option 81 00:02:42,140 --> 00:02:42,186 “Show Other Point” option: 82 00:02:42,187 --> 00:02:42,587 “Show Other Point” option: 83 00:02:42,611 --> 00:02:57,814 by selecting this option in single-phase faults such as “L1-E”, in addition to the shot points, another point is displayed on the “Differential characteristic” window in form of a delta which in fact is the indicator of differential and bias current of the two other phases. 84 00:02:57,838 --> 00:03:04,115 This option is used in cases where the single-phase fault characteristic curve is different from the phase-to-phase fault. 85 00:03:04,140 --> 00:03:16,529 The reason for this difference is that in some areas, the relay does not perform a trip because of the differential and bias current of the phase being tested (L1-E), but because of the differential and bias current of the two other phases. 86 00:03:16,553 --> 00:03:25,453 This means that if you have brought a general trip to the device to test single-phase fault such as “L1-E” and checked “NO COMBINED CHARACTERISSTIC” option, 87 00:03:25,477 --> 00:03:33,270 in some of the areas close to the characteristic curve the relay performs a trip for the “L1-E” fault but this trip is not the trip of the “L1” 88 00:03:33,294 --> 00:03:42,613 phase but it is related to current of the two other phases which can be also observed by using the characteristic of the delta point on the curve. 89 00:03:42,637 --> 00:03:51,766 If in the same condition the “NO COMBINED CHARACTERISTIC” option is unchecked, you can see that this point is located at the “TRIPPING” zone.