1 00:00:18,405 --> 00:00:22,912 Non-directional overcurrent protection test in AMR relay (simple test using templates) 2 00:00:22,940 --> 00:00:28,327 AMR modular relay of Vebko company supports various protection functions. 3 00:00:28,374 --> 00:00:36,603 Explanations of the capabilities and software environment of this relay have already been presented in the video related to differential protection test. 4 00:00:36,624 --> 00:00:39,524 After connecting to the AMR relay at first, 5 00:00:39,573 --> 00:00:47,450 simply load the device's hardware configuration from the Device menu by selecting the Read Hardware from Relay option. 6 00:00:47,497 --> 00:00:53,562 The default password is 123456 to receive elements. 7 00:00:53,981 --> 00:00:59,386 At this point, a message is given to remove the signal, which if confirmed, 8 00:00:59,460 --> 00:01:08,695 , if the current hardware is not the same as the relay hardware, the current hardware signals used in the VFC section are deleted. 9 00:01:09,654 --> 00:01:14,953 It should be noted that the settings for the conversion ratio of voltage and current transformers 10 00:01:15,067 --> 00:01:23,568 are determined in the related card. Here the ratio of current card conversion is 200A to 1A. 11 00:01:23,593 --> 00:01:26,562 As mentioned earlier in the AMR software, 12 00:01:26,656 --> 00:01:32,499 config of some of the most widely used functions as are placed in the software as sample 13 00:01:32,865 --> 00:01:39,521 the user can send new settings to the relay by selecting each of them and applying the desired changes. 14 00:01:40,183 --> 00:01:47,343 For this purpose, a set of functions can be seen in the Relay VFC tab and in the Temp Functions section. 15 00:01:47,563 --> 00:01:54,039 It should be noted that by selecting each Temp Function, the blocks in the VFC are removed. 16 00:01:54,064 --> 00:02:01,759 Here the non-directional overcurrent function displayed under the name OC 50/51 is selected. 17 00:02:01,773 --> 00:02:08,404 In configuring this function, an OC Inverse block and two OC Definite blocks are used. 18 00:02:08,429 --> 00:02:13,709 They have different settings and the signals of a current card are assigned to their input 19 00:02:13,896 --> 00:02:22,143 Finally, output signals are assigned to Binary Outputs and relay LEDs by Output and LED blocks. 20 00:02:22,390 --> 00:02:28,505 To change the settings, simply right-click on each block to access a set of options. 21 00:02:28,622 --> 00:02:32,163 Finally, the changes are sent to the relay. 22 00:02:32,183 --> 00:02:38,976 In this video, by double-clicking on blocks that contain constant time stages for non-directional overcurrent function, 23 00:02:39,010 --> 00:02:48,485 disables them and define the 1A and TMS current settings equal to 0.1 by double-clicking on the first stage, 24 00:02:48,510 --> 00:02:50,710 which is defined as reverse time. 25 00:02:51,287 --> 00:02:57,871 By making these changes, simply select Send Config and Setting to Relay from the Device menu again. 26 00:02:57,896 --> 00:03:02,969 In this way, the settings and configuration applied are moved to the relay. 27 00:03:02,983 --> 00:03:08,337 In the next step, by running AMPro software and opening the AMT Overcurrent room, 28 00:03:08,397 --> 00:03:15,157 it is enough to go to the Object Parameters test section and create the test characteristic after entering the information. 29 00:03:15,264 --> 00:03:22,813 Here, a reverse time characteristic is created by 1A and TMS=0.1 current settings. 30 00:03:22,880 --> 00:03:27,922 Keep in mind that it is also possible to test this characteristic using the Xrio file. 31 00:03:27,989 --> 00:03:32,056 In order to evaluate the performance of non-directional overcurrent function, 32 00:03:32,062 --> 00:03:35,582 two Trip Time and Pickup-Drop Off tests are performed. 33 00:03:35,600 --> 00:03:40,609 The purpose of Trip Time is to detect and evaluate the accuracy of the performance 34 00:03:40,634 --> 00:03:46,405 time of this function and the purpose of pickup-drop off test is to detect and evaluate the accuracy 35 00:03:46,430 --> 00:03:52,382 of the actual current of the performance threshold and of reset threshold of this function. 36 00:03:52,407 --> 00:03:53,407 Trip Test 37 00:03:53,432 --> 00:03:58,286 Three states including PreFault, Fault and PostFault are required to perform this test. 38 00:03:58,270 --> 00:04:04,689 PreFault time is suitable for 500 milliseconds, fault time should be greater than the maximum trip time, 39 00:04:04,736 --> 00:04:08,590 and Post Fault time is at least 500 milliseconds. 40 00:04:08,744 --> 00:04:13,544 PostFault time should be increased if the drop-off is not an instantaneous. 41 00:04:13,574 --> 00:04:20,993 The suggested points for reduced time functions are 1.5 times, 2 times and 4 times the regulatory current, 42 00:04:21,027 --> 00:04:26,349 and for constant time curves, 1.5 and 2 times the regulatory current. 43 00:04:26,396 --> 00:04:29,617 To detect the regulatory current of the second unit, 44 00:04:29,638 --> 00:04:37,923 two points can be added to the amount of 90 and 110 percent of the regulatory current of the second unit. 45 00:04:37,997 --> 00:04:45,392 By adding points, perform the test to check the performance of this function from the point of view of time accuracy. 46 00:05:00,324 --> 00:05:02,004 Pickup/Drop-off Test 47 00:05:02,145 --> 00:05:08,490 In order to perform this test, first determine how the diagnosis of pickup and drop-off is performed. 48 00:05:08,515 --> 00:05:12,273 This process can be done through a separate contact, namely Start, 49 00:05:12,298 --> 00:05:19,838 Relay LED viewing, or changing the setting for instantaneous function and using the trip contact. 50 00:05:19,925 --> 00:05:22,330 Here we used the Contact Pickup Relay. 51 00:05:22,370 --> 00:05:26,409 You can also put the current fault value in the desired range. 52 00:05:26,952 --> 00:05:31,305 Here the fault value is considered 5% by default. 53 00:05:31,511 --> 00:05:39,663 The performance range of overcurrent curves in the AMR relay starts from 1.1 regulatory current in the relay. 54 00:05:39,687 --> 00:05:46,541 Therefore, first, by enabling the Active Range Limits option in the Overcurrent Protection Parameters window, 55 00:05:46,566 --> 00:05:52,022 the Imin value is set to 1.1 Iref. In the next step, 56 00:05:52,029 --> 00:05:56,960 the current setting value for the pickup is placed on 1.1*1=1.1 amps. 57 00:05:58,675 --> 00:06:08,847 By adding points, it is enough to perform the test and add the necessary elements to the report when it is finished.