1 00:00:18,828 --> 00:00:21,406 Overcurrent" Room Settings 2 00:00:22,344 --> 00:00:28,593 Continuing the introduction of the "Overcurrent" room, this video explains the "Setting" tab 3 00:00:28,906 --> 00:00:32,578 . In this tab, you can configure a series of test-related settings. 4 00:00:33,125 --> 00:00:37,890 The "Voltage Output" is typically used in Directional tests. However 5 00:00:38,203 --> 00:00:43,671 if for any reason you want to activate the voltage outputs during a Non-Directional test 6 00:00:44,219 --> 00:00:50,156 and observe how voltage variations affect the Overcurrent test, you can use this section. 7 00:00:50,547 --> 00:00:56,484 By checking this option, you’ll see that in the "Signal View" window, under the "Setting" section, 8 00:00:56,641 --> 00:01:04,140 the "Voltage group A" option becomes active. Once you tick this box, the activated voltages 9 00:01:04,531 --> 00:01:07,031 voltages will be visible in the "Signal View" window. 10 00:01:07,344 --> 00:01:14,765 In the "Fault Inception" section, the "Angle" defines the point on the waveform where the fault is initiated. 11 00:01:15,000 --> 00:01:19,843 However, this angle is not the angle between the voltage and current. 12 00:01:20,078 --> 00:01:26,015 Instead, it shifts both the voltage and current signals by the same amount. 13 00:01:26,875 --> 00:01:32,421 By adjusting the "Angle" value, you can observe the changes in voltage and current signals 14 00:01:32,578 --> 00:01:38,437 in the "Signal View"window.Keep in mind, to set the angle between voltage and current 15 00:01:38,750 --> 00:01:42,421 , you should use the "Angle" field located in the "Shot Test"tab. 16 00:01:42,890 --> 00:01:49,374 In the "Pickup Drop-off Contact" section, the "Trigger On" field allows you to select which "Contact" 17 00:01:49,688 --> 00:01:56,406 should be used to perform the "Pickup Drop-off" test.This option is especially useful in cases where the relay 18 00:01:56,563 --> 00:02:02,265 does not have a dedicated "Pickup" contact.In such relays, by reducing the trip time to zero, 19 00:02:02,578 --> 00:02:05,781 you can approximately determine the pickup current 20 00:02:05,928 --> 00:02:13,116 However, if you don’t want to modify the relay settings, and the relay has a "Pickup LED" or a "Pickup Flag" 21 00:02:13,349 --> 00:02:20,301 you can manually issue the "PickUp" and "DropOff" commands by checking the "Space Key Press" option 22 00:02:20,771 --> 00:02:26,318 and pressing the "Space" key. Pressing the "Space" key at the moment of "PickUp" 23 00:02:26,553 --> 00:02:33,193 and pressing it again at the moment of "DropOff", allows you to perform a "PickUp-DropOff" test manually. 24 00:02:33,584 --> 00:02:40,224 . Additionally, by enabling the "Considering chatter" option, the software will recognize 25 00:02:40,249 --> 00:02:47,826 any rapid changes in the relay’s "PickUp-DropOff" contact as "Multi PickUp" or "Multi DropOff" events. 26 00:02:48,037 --> 00:02:53,583 In the "Add to Current Signal" section — if you want to simulate a transient condition 27 00:02:53,896 --> 00:03:00,693 for the current waveform, and test the transient overcurrent — you can enable the "DC Decay" option 28 00:03:01,005 --> 00:03:06,709 .Then, by setting the "Amplitude" as a percentage, and adjusting the time constant using the 29 00:03:06,865 --> 00:03:13,427 the "1 over tau" value, you’ll see the changes reflected in the waveform — directly within the "Signal View" window.Now 30 00:03:13,896 --> 00:03:18,583 if you also want to add a harmonic component to the transient waveform 31 00:03:18,740 --> 00:03:24,208 , check the "Harmonic" box. Then, set the harmonic order in the "Number" field 32 00:03:24,834 --> 00:03:30,380 define its "Amplitude" as a percentage, and specify the phase angle 33 00:03:31,006 --> 00:03:37,490 Remember if you uncheck these options, the signal will automatically return to its "Normal" state. 34 00:03:37,880 --> 00:03:45,536 In the "Add to Voltage Signal" section, you can apply all of these same settings to the voltage waveform as well 35 00:03:45,692 --> 00:03:51,786 In the "Stop/Continue" section, by checking the option "Ask Stop Continue of Each Test" 36 00:03:52,099 --> 00:03:57,958 the software will prompt the user after each "Shot Test" or "PickUp-DropOff" 37 00:03:58,662 --> 00:04:02,099 asking whether to continue with the next test or stop 38 00:04:02,881 --> 00:04:10,927 This feature is especially useful when you need enough time to read and verify the test values displayed on the relay. 39 00:04:11,227 --> 00:04:15,914 In the "Directional Algorithm" section, according to the "Directional" relay algorithm, 40 00:04:16,227 --> 00:04:20,210 you can choose between "Memory-Cross Polarization" and "Cross Polarization". 41 00:04:20,758 --> 00:04:26,382 ". These algorithms relate to the operation of "Directional" relays in two-phase faults. 42 00:04:26,930 --> 00:04:32,867 By selecting "Cross Polarization", the relay's protection zone adjusts based on the changes 43 00:04:33,101 --> 00:04:38,881 changes in "Line to Line" fault voltage.However, in the "Memory-Cross Polarization" algorithm, 44 00:04:38,961 --> 00:04:46,070 the relay’s protection zone expands symmetrically by a fixed 30 degrees on both sides 45 00:04:46,617 --> 00:04:53,570 .These algorithms are explained in detail with examples in the video related to the "Directional OverCurrent" test.