1 00:00:27,162 --> 00:00:31,185 “ZT Diagram” and “Medium Detail View” windows: 2 00:00:31,210 --> 00:00:34,804 Test points and their characteristics in “Medium Detail View”: 3 00:00:34,829 --> 00:00:47,093 To start first open “Medium Detail View” window from the toolbar and move it to an appropriate location. Characteristics of each point are displayed in “Medium Detail Window” with details. 4 00:00:47,118 --> 00:00:51,256 This window consists of two tables of “Shot data” and “Zone data”. 5 00:00:51,281 --> 00:00:59,955 In “Shot data” table, the information related to time, impedance, test point as well as current and voltage of the test point are shown. 6 00:00:59,979 --> 00:01:03,230 “Zone data” table is composed of two main parts. 7 00:01:03,254 --> 00:01:13,068 In the first part, general information related to relay zones along with the allowed operation time for each one is displayed and it is the same for all selected points. 8 00:01:13,368 --> 00:01:14,368 9 00:01:17,501 --> 00:01:18,501 10 00:01:26,362 --> 00:01:33,724 But in “Is in Zone” column in the second table, it is specified that in which zones the selected point is located. 11 00:01:33,748 --> 00:01:40,422 In “Is in Tol” column it is specified whether the selected point is located in the tolerance zone or not. 12 00:01:40,446 --> 00:01:45,664 In “Zone Index” column, the main zone related to the selected test point is specified. 13 00:01:45,688 --> 00:01:55,846 If the point is located in only one zone, that zone will be considered as the main zone but it should be noted that if the point is located in multiple zones, 14 00:01:55,870 --> 00:02:00,397 the zone with the shortest nominal time will be considered as the main zone. 15 00:02:00,421 --> 00:02:04,853 “ZT Diagram” window and points related to “Check Line” and “Search Line”: 16 00:02:04,877 --> 00:02:10,210 To open “ZT Diagram” window, “View” menu or the toolbar should be used. 17 00:02:10,234 --> 00:02:13,530 On this window the time diagram based on impedance, 18 00:02:13,554 --> 00:02:19,807 according to the operation characteristic of the relay zones along a specific angle is displayed which the 19 00:02:19,831 --> 00:02:26,366 most important application of this in the software is finding the test points for “Search Test” and “Check Test”. 20 00:02:26,391 --> 00:02:36,680 Note that the diagram on this window is linked with “Impedance View” and any point that is “shot” on one of these two windows will be “shot” on the other window accordingly. 21 00:02:36,705 --> 00:02:42,774 In the curve of this window, the vertical lines are the border of zones and between the two vertical lines, 22 00:02:42,781 --> 00:02:48,501 the time-impedance characteristic of the zones in the angle specified by the user is displayed. 23 00:02:48,532 --> 00:02:53,352 On this window, tolerances are displayed with dotted lines and yellow zones. 24 00:02:53,416 --> 00:02:57,237 Let us use an example to explain how this diagram works. 25 00:02:57,261 --> 00:03:07,362 If “Test View” is on “Shot Test”, and 0.5 ohm and 65 degrees are entered in “Z” and “Phi” fields in “ZT Diagram” window respectively, 26 00:03:07,401 --> 00:03:12,791 you can see that the point corresponding to this “Shot” is displayed on “Impedance View”. 27 00:03:12,870 --> 00:03:23,127 Note that in “Shot Test”, the values of “Angle” and “Phi” are the same because “Angle” refers to the angle of the line drawn from the point specified in “Origin”, with “X-R” diagram as its origin. 28 00:03:23,151 --> 00:03:33,127 By specifying it, the variation of time - impedance curve in “Angle” is displayed in “ZT Diagram” window. 29 00:03:33,197 --> 00:03:41,612 This means that if the “Angle” is 65 degrees, “ZT Diagram” shows the time variation based on the impedance in this angle. 30 00:03:41,620 --> 00:03:53,776 In this angle, the impedance moves from zone 1 with 30 ms to zone 2 with 100 ms and then moves from zone 2 up to “No Trip” zone. 31 00:03:53,801 --> 00:04:02,081 By moving on this diagram and clicking on its different sections, you can see the movement of “Magnet Cursor” in “Impedance View”. 32 00:04:02,104 --> 00:04:07,638 To make it clear, if in “ZT Diagram” window, the “Angle” is changed to 40 degrees, 33 00:04:07,948 --> 00:04:16,041 you can see that the “ZT Diagram” changes because in 40 degrees angle, the impedance only changes from zone 1 to “No Trip”. 34 00:04:16,073 --> 00:04:23,540 In fact, by changing the angle, the “ZT” curve changes according to the zones available on its impedance course. 35 00:04:23,565 --> 00:04:34,838 In this diagram, you can see two blue dotted lines which the left side line indicate the “|Z|=0” line which is the minimum allowed impedance value. 36 00:04:34,870 --> 00:04:38,393 As you already know, impedance cannot be smaller than zero. 37 00:04:38,425 --> 00:04:41,691 The right side line indicates the selected point. 38 00:04:41,729 --> 00:04:51,729 But in “Search Test” and “Check Test”, “Angle” is there angle of the drawn line “Phi” is the origin impedance angle of “Search Line” or “Check Line”, and values of them are different. 39 00:04:51,808 --> 00:04:56,768 For example, if in “Check Test” a “Check Line” is drawn from zone 1 to “No Trip”, 40 00:04:56,792 --> 00:05:03,706 you can see the time based on impedance diagram in “ZT Diagram” window in the angle where the line is drawn. 41 00:05:03,731 --> 00:05:13,724 In this diagram you can see two blue dotted lines where the first line indicates the start point and the second line indicates the end point of the “Check Line”. 42 00:05:13,764 --> 00:05:28,318 Note that in this state, the “|Z|=0” line is the start or origin point of the “Check Line” and the other blue line is the end point of the “Check Line” and the distance between these lines is the length of the “Check Line”. 43 00:05:28,365 --> 00:05:34,185 An important point for understanding the concept of “Check Test” is that when a “Check Line” is drawn, 44 00:05:34,210 --> 00:05:42,334 the software starts moving on the line and adding a “Shot” on places where the tolerance is broken on the “ZT Diagram”. 45 00:05:42,365 --> 00:05:50,299 Here, as you can see, since there are three fractures along the “Check Line” in “ZT Diagram”, three “Shots” are added. 46 00:05:50,436 --> 00:06:07,068 In this case, the difference between “Search Test” and “Check Test” is that in “Search Test” the software does not add a “Shot” on all tolerance fractures on the “Search Line” but from the zone line towards both ends, it only adds a “Shot” to the first tolerance fracture. 47 00:06:07,115 --> 00:06:11,974 Another point is that if you draw a “Search Line” or “Check Line” like this figure, 48 00:06:11,972 --> 00:06:18,435 you can see that in addition to adding “Shots” on places where the tolerance is fractured on the “ZT Diagram”, 49 00:06:18,467 --> 00:06:24,232 the software adds a “Shot” inside the zone and in the middle of the “ZT” characteristic accordingly. 50 00:06:24,240 --> 00:06:31,818 To explain this, if the line drawn from within a zone crosses a zone with different operation time but no point is “Shot” from that zone, 51 00:06:31,834 --> 00:06:40,256 the software adds a “Shot” to a point on “Search Line” or “Check Line” in the middle of its characteristic in “ZT Diagram” and “Impedance View”.