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TRM-20/40 User`s Manual - Vanguard Instruments Company, Inc.

1. the record number that you would like to erase and then press the ENTER key The following screen will be displayed BE REV1 TRM 20 AND TRM 40 USER S MANUAL RECORD HUMBER 21 ERASED Press any key to return to the START UP menu 2 ERASE ALL RECORDS Press the 2 key ERASE ALL RECORDS to erase all records stored in the TRM s Flash EEPROM The following screen will be displayed ERASE ALL RECORDS TOU SURE EHTER TO COHTIHLE You can press the STOP key to cancel the process and return to the START UP menu Press the ENTER key to proceed with deleting all the test records from the unit s Flash EEPROM The following screen will be displayed during the erasure process ERASING RECORDS PLEASE WAIT The following screen will be displayed when all test records have been completely erased RECORDS ERASED Press any key to return to the START UP menu 70 TRM 20 AND TRM 40 USER S MANUAL REV1 3 16 Erasing Test Records from a USB Flash Drive Follow the steps below to erase test records from a USB Flash drive a Make sure a USB Flash drive is connected to the unit s USB MEM port and then start from the START UP menu 1 RUN TEST CH 2 SETUP TAF 2 USER DIAGMOSTICS Press the 2 key SETUP b The following screen will be displayed 1 RECORD II 2 RECORD 5 SAYE RESTORE RECORD 4 SET TIME
2. LANGUAGE Press the 3 key RESTORE RECORD c The following screen will be displayed 1 RESTORE RECORD 2 RECORD 2 RECORD DIRECTORY 4 ERASE RECORD a COPY TO THUMB ORT VE Press the 4 key ERASE RECORD d The following screen will be displayed 1 ERASE INTERNAL FEC 2 ERASE THUMB DRY REC Press the 2 key ERASE THUMB DRV REC REV1 TRM 20 AND TRM 40 USER S MANUAL e The following screen will be displayed ERASE RECORD ERASE SINGLE ERASE ALL RECORDS STOP TO EXIT 1 ERASE SINGLE REC Press the 1 key ERASE SINGLE REC to erase a single test record from the connected USB Flash drive The following screen will be displayed ERASE THUMB DEITY REC Type the record number that you would like to erase using the alpha numeric keypad and then press the ENTER key The test record will be erased from the USB Flash drive and the following screen will be displayed THUME DRIVE KRELL D ERASED Press any key to continue You will be returned to the beginning of step e Press the STOP key to return to the START UP menu 2 ERASE ALL RECORDS Press the 2 key ERASE ALL RECORDS to delete all test records from the connected USB Flash drive The following warning screen will be displayed ERASE ALL THUME DRIVE RECORDS GRE YOLI SURE ENTER TO TRM 20 AND TRM 40 USER S MANUAL REV 1
3. 1 RECORD II 2 RECORD 5 SAVE RESTORE RECORD 4 SET TIME LANGUAGE Press the 4 key SET TIME The following screen will be displayed DATE Hh DD YY Type the current date using the keypad The following screen will be displayed EHTER HH Hh zz Enter the time using the keypad When the time has been entered you will be immediately returned to the START UP menu REV1 TRM 20 AND TRM 40 USER S MANUAL 3 8 Setting the Interface Language Follow the steps below to set the interface language English Spanish or Turkish Start from the START UP menu OI TES 1181 711 1 FUH TEST 6 21 2 SETUP 22 TAF 5 USER DITAGHOSTICS Press the 2 key SETUP b The following screen will be displayed C 1 RECORD II 2 RECORD 5 SAVE RESTORE RECORD 4 SET TIME S SET LANGUAGE Press the 5 key SET LANGUAGE The following screen will be displayed 1 2 5 Select the preferred interface language by pressing the corresponding key on the keypad 1 2 or 3 The interface language will be set and a confirmation screen will be displayed as shown below EHDGLISH SET Press any key to return to the START UP menu TRM 20 AND TRM 40 USER S MANUAL REV1 3 9 Performing a Resistance Test a Start from the STA
4. 78 3 17 Converting Resistance Measurements 81 TRM 20 AND TRM 40 USER S MANUAL REV 1 LIST OF FIGURES Figure 1 TRM 20 40 Controls and Indicators 5 Figure 2 Typical Connections a Load Tap Changer 7 17 Figure 3 Typical TRM Connections Diagram for A Dynamic Resistance Test 17 Figure 4 Typical TRM Connections Diagram for 2 Windings 18 Figure 5 Typical Resistance Test Results 34 Figure 6 Typical LTC Voltage Regulator Test Report Printout 43 Figure 7 Typical Special Test Report Brmntout 50 Figure 8 Typical Dynamic LTC Test Results Printout Showing an Opened Circuit 55 Figure 9 Typical Test Record Directory Brmtout 74 LIST OF TABLES Table 1 TRM 20 40 Technical Specifications nne 4 REV1 TRM 20 AND TRM 40 USER S MANUAL CONVENTIONS USED IN THIS DOCUMENT This document uses the following conventions Both the TRM 20 40 are simply referred to as in this manual The exact model number is used only in cases where differences between the units are discussed A key switch or knob on the is indicated as KEY SWITCH KNOB Menu names are referenced as MENU TR
5. CHART Mio PLEASE WAIT aa 1 01 AMPS AF PIR EHERDIZED When the TRM has determined that the resistance reading is stable the following screen will be displayed REV1 TRM 20 AND TRM 40 USER S MANUAL READY TO CAPTURE DATA PRESS ENTER OF LTC RAISE LOHER TO START TIMING Press the ENTER key or the LTC RAISE or LOWER key to continue g The TRM will start capturing data and the following screen will be displayed ELUHHIMHG LTC TEST 259 STOP TO EMD TEST FMR ENERGIZED The second line on the screen will display the remaining time for the test While the TRM captures data you can press the LTC RAISE or LOWER button to cycle through the LTC or Voltage Regulator s taps You can wait for the remainder of the test time or you can press the STOP key at any time to end the test If you have completed cycling through the taps it is recommended to stop the test manually If the test is performed for the duration of 240 seconds the graph printout will be rather long h When the test time has expired or the test is stopped manually the following screen will be displayed PRINTING REPORT PLEASE WAIT The test results will be printed on the unit s built in thermal printer A sample test results printout is shown in Figure 8 The following screen will be displayed when printing is finished SAVE THIS RECORD T THUME
6. TO ACCEPT Use the PAPER Contrast and PAPER v Contrast keys to adjust the D U T Device Under Test temperature Press the ENTER key to confirm the D U T temperature setting REV1 TRM 20 AND TRM 40 USER S MANUAL h The following screen will be displayed TEMP leis BI Tl TO ADJUST TE TO ACCEPT Use the PAPER Contrast and PAPER v Contrast keys to adjust the reference temperature Press the ENTER key to confirm the reference temperature setting i Thefollowing warning screen will be displayed S spe DANGEROUS FLASH OVER HILL IF CABLES DIZSCOHHECTELD Sefer Sees en eu e wan en eu e wan en e This warning is a reminder that the next sequence of test steps will run current through the test load Press any key to continue j The following screen will be displayed MI amp V2 TEST TEST START TO TEST Lm STOP TO ABORT Press the START key to run the test TRM 20 AND TRM 40 USER S MANUAL REV1 k Thefollowing screen will be displayed momentarily I ERATIHG PLEASE WAIT After the TRM finishes its internal calibration the following screen will be displayed kat fi CHART Mio PLEASE WAIT 1 01 AMPS EHERDIZED This is only an informational screen to remind the operator that a test is in progress T
7. The following screen will be displayed 1 RESTORE RECORD 2 RECORD 4 RECORD DIRECTORY 4 ERASE RECORD a COPY TO ORT VE Press the 3 key RECORD DIRECTORY TRM 20 AND TRM 40 USER S MANUAL REV1 d The following screen will be displayed DIRECTORY 1 FULL DIRECTOR SHORT DIRECTOR S Press the 1 key FULL DIRECTORY to print the entire directory of test records After the directory is printed you will be returned to the START UP menu Press the 2 key SHORT DIRECTORY to print a short directory This lists the last 10 records stored in the TRM s memory After the directory is printed you will be returned to the START UP menu A typical test record directory printout is shown in Figure 9 TEST DIRECTORY RECORD NUMBER 74 DATE TIME 11 04 11 09 49 48 V1 amp V2 SPECIAL TEST 1 MIN NUMBER OF TESTS 2 STATION LAB CIRCUIT 16 TO 16L MFR VIC MODEL TRM4O S N RECORD NUMBER 73 DATE TIME 11 04 11 09 27 07 Vi amp V2 5 LTC TEST NUMBER OF TESTS 7 STATION LAB CIRCUIT 16 TO 16L VIC MODEL TRM4O S N RECORD NUMBER 72 DATE TIME 11 04 11 09 17 17 V1 amp V2 TEST NUMBER OF TESTS 4 STATION LAB CIRCUIT 16R TO 16L MFR VIC MODEL TRM40 S N RECORD NUMBER 63 DATE TIME 10 04 11 09 30 16 1 ONLY TEST NUMBER OF TESTS 1 STATION CIRCUIT
8. INTERNALLY a SAVE T THUMB DRIVE 1 SAVE INTERNALLY Press the 1 key SAVE INTERNALLY to save the test record to the unit s Flash EEPROM Continue to step e SAVE TO THUMB DRIVE Press the 2 key SAVE TO THUMB DRIVE to save the test record to the connected USB Flash Drive The following screen will be displayed REC BEL SAVED T THLUME DRT VE Press any key to return to the START UP menu e The following screen will be displayed FECOED HLUMBER 2 BECH SAVED Press any key to return to the START UP menu TRM 20 AND TRM 40 USER S MANUAL REV1 3 15 3 Restoring a Test Record From Flash EEPROM Use the steps below to restore a test record from the TRM s internal Flash EEPROM to the working memory a Start from the START UP menu Press the 2 key SETUP b The following screen will be displayed Press the 3 key SAVE RESTORE RECORD c The following screen will be displayed Le Press the 1 key RESTORE RECORD REV1 TRM 20 AND TRM 40 USER S MANUAL d The following screen will be displayed RESTORE RECORD 1 EHTER RECORD HUMBER z 5RHIEE TO SELECT If you have a USB Flash drive inserted in the unit s USB MEM port the following screen will be displayed instead of the above screen NOTE 1 INTERNAL STORAGE DEIVE Press the 1 key INTERNAL STORAGE The following screen will be displayed RESTORE RECORD 1 EHTER R
9. TRM 20 AND TRM 40 USER S MANUAL REV1 3 6 Entering Test Record Header Information You can enter the test record header information before performing tests The record header includes identifying information such as the company station circuit model number etc Once the header information has been entered it will apply to all subsequent test records To enter the header information a Start from the START UP menu TES 11781711 1 RUN TEST Rr 2 SETUP e pus 4 USER CG Press the 2 key SETUP b The following screen will be displayed 1 RECORD ID 2 RECORD 5 SAVE RESTORE RECORD 4 SET TIME LANGUAGE Press the 1 key RECORD ID The following screen will be displayed Tel TO POSITION ENTER TO ACCEPT Type the company name using the alpha numeric keypad When pressing a key the corresponding number on the key will be displayed first Pressing the key again will display the first letter on the key Pressing the key again will display the second letter on the key For example to type the letter A you must press the 2 key twice To erase the character at the cursor position press the CLEAR key Press the PAPER Contrast key to move to the next character Press the PAPER v Contrast key to move to the previous character Press the ENTER key when you are done typing the company name 20 REV1 TRM 20 AND TRM 40 USER S MANUAL
10. 2000 Ohms 1 5 reading 1 count 1 20A 1A increments TRM 20 1 40A in 1A increments TRM40 60Vdc charging 18V DC max during measurement Two static resistance reading channels Back lit LCD 64 x 128 dot graphic viewable in direct sunlight and low light levels Built in 2 5 wide thermal printer 100 test records Each record can contain up to 99 readings Up to 999 test records on external USB Flash drive RS 232C USB and Bluetooth Designed to meet UL 61010A 1 and Can CSA C22 2 No 1010 1092 standards Operating 10 C to 50 C 15 F to 122 F Storage 30 C to 70 C 22 F lo 158 E 90 RH 40 C 104 F non condensing 2000m 6562 ft to full safety specifications One 50 foot current cable set two 50 foot resistance sense cable set one LTC control cable one ground cable one power cord One RS 232C cable one USB cable Transportation Case One year on parts and labor REV1 TRM 20 AND TRM 40 USER S MANUAL 1 3 Controls and Indicators The TRM 20 40 s controls and indicators are shown in Figure 1 The purpose of the controls and indicators may seem obvious but users should become familiar with them before using the TRM Accidental misuse of the controls will usually cause no serious harm Users should also be familiar with the safety summary found on the front page of this User s Manual USB Flash Drive 5 232 Load Tap LTC Back Lit LCD Screen Input Power Ground Interface Compu
11. Press the STOP key if you do not want to erase all the test records You will be returned to the START UP menu Press the ENTER key to proceed with deleting all the test records from the connected USB Flash drive The following screen will be displayed when all the records have been erased Press any key to return to the START UP menu REV1 TRM 20 AND TRM 40 USER S MANUAL 3 17 Converting Resistance Measurements The TRM can convert the resistance reading of the device under test at its present temperature to the equivalent resistance value at a different temperature The conversion is accomplished by the following formula Rs Rm Ts Tk Tm Tk Where Rs is the resistance at desired temperature Rm is the measured resistance Ts is the desired reference temperature Tm is the temperature at which the resistance was measured Tk is the constant used for the winding material Tk 234 5 for copper Tk 240 0 for aluminum Vanguard Instruments Company Inc 1520 S Hellman Ave e Ontario CA 91761 USA Phone 909 923 9390 e Fax 909 923 9391 www vanguard instruments com Copyright 2015 by Vanguard Instruments Company Inc TRM 20 40 User s Manual e Revision 1 3 e August 24 2015 TA
12. d The following screen will be displayed Type the station name using the alpha numeric keypad and then press the ENTER key e The following screen will be displayed Type the circuit information using the alpha numeric keypad and then press the ENTER key f The following screen will be displayed Type the manufacturer name using the alpha numeric keypad and then press the ENTER key TRM 20 AND TRM 40 USER S MANUAL REV1 g The following screen will be displayed Type the model information using the alpha numeric keypad and then press the ENTER key h The following screen will be displayed Type the serial number using the alpha numeric keypad and then press the ENTER key i Thefollowing screen will be displayed Type the transformer s KVA rating using the alpha numeric keypad and then press the ENTER key REV1 TRM 20 AND TRM 40 USER S MANUAL j The following screen will be displayed Type the operator s name using the alpha numeric keypad and then press the ENTER key All header information will be saved and you will be returned to the START UP menu TRM 20 AND TRM 40 USER S MANUAL REV1 3 7 Setting the Date and Time To set the date and time a Start from the START UP menu TIE 1158111 13 ELI TEST 2 SETUP 22 TAF 2 USER DInpGHOSTICS Press the 2 key SETUP b The following screen will be displayed C
13. AND TRM 40 USER S MANUAL 3 12 Performing a Dynamic LTC Test The Dynamic LTC Test is used to conduct a resistance test while the LTC or Voltage Regulator is switching taps The test will run for 240 seconds to allow the LTC or Voltage Regulator enough time to switch through all of the taps during the test The resistance data is recorded continuously during the test period Use the following steps to perform a Dynamic LTC Test E a Start from the START UP menu Press the 1 key RUN TEST b The following screen will be displayed Press the 3 key DYNAMIC LTC TEST c The following screen will be displayed This warning reminds the operator that the next sequence of test steps will run current through the test load Press any key to continue HEUS TRM 20 AND TRM 40 USER S MANUAL d The following screen will be displayed SET TU LOWEST POSITION PRESS AMY KEY HHEH READS Set the LTC or Voltage Regulator to the lowest position either manually or by pressing and holding the LTC LOWER button Press any key to continue e The following warning screen will be displayed DYHAMIC LTC TEST START TO RUM TEST STOF T ABORT Press the START key to run the test f Thefollowing screen will be displayed momentarily PLEASE WAIT After the TRM has finished its internal calibration the following screen will be displayed
14. DRIVE 1 TES 2 HU TRM 20 AND TRM 40 USER S MANUAL REV1 1 YES Press the 1 key YES to save the test results to the connected USB Flash drive The following screen will be displayed Press any key to return to the START UP menu 2 NO Press the 2 key NO if you do not want to save the test results The following screen will be displayed Press the 1 key DO NOT SAVE RECORD You will be returned to the START UP menu REV1 TRM 20 AND TRM 40 USER S MANUAL TEST RESULTS DATE 11 22 11 TIME 15 42 19 COMPANY STATION CIRCUIT Voltage Plot Continued _ NC TESTED AT 10 AMPS n transition VOLTAGE PLOT MARKERS 15 INTERVALS dp SYI9A TO sign TO Typical open contact transition results in a higher voltage spike compared to nominal contact transition meni 11 t Figure 8 Typical Dynamic LTC Test Results Printout Showing an Opened Circuit TRM 20 AND TRM 40 USER S MANUAL REV1 3 13 Performing a Diagnostic Test In diagnostic mode the TRM can run a resistance test display the sense voltages and test current on the TRM This feature can be used to verify the TRM s voltage and current readings against an external meter Use the steps below to perform a diagnostic test a Start from the START UP menu M TEC 1127 11 RUN TEST 08 49 15 ra TRE z USER DIAGHOSTICS Press the 3
15. MANUAL 2 NO If you do not wish to save the reading press the 2 key NO and continue to step o o The following screen will be displayed RUM TEST I Ea 2 HU Press the 1 key YES to run another test Return to step b Press the 2 key NO if you do not want to run another test Continue to step p p Thefollowing screen will be displayed SAVE THIS RECORD 1 YES 1 YES Press the 1 key YES to save the test record Continue to step q 2 NO Press the 2 key NO if you do not want to save the test record The following screen will be displayed TOU SURE DATA HILL BE LOST 1 DO SAVE RECORD 2 RECORD Press the 1 key DO NOT SAVE RECORD if you do not want to save the record You will be returned to the START UP menu Press the 2 key SAVE RECORD to save the record Continue to step q 0 TRM 20 AND TRM 40 USER S MANUAL REV 1 The following screen will be displayed Press any key to return to the START UP menu TEST RESULTS DATE T TIME 09 17 17 COMPANY VIC STATION LAB CIRCUIT 16R TO Let VIC MODEL TRM4O SN 42003 7S5KVA OPERATOR amp V2 TEST TESTED AT 10 5 RL 1 464 MILLI OH S R2 1 448 MILLI OHMS I 10 004 AMPS TAP WINDING DATE 11 04 11 TIME 09 17 17 Figure 5 Typical Resistance Test Results Printout
16. MFR MODEL S N Figure 9 Typical Test Record Directory Printout _ REV1 TRM 20 AND TRM 40 USER S MANUAL 3 15 7 Erasing Test Records from the Flash EEPROM Follow the steps below to erase test records from the unit s Flash EEPROM a Start from the START UP menu 1 RUM TEST dde SETUP 4 EA 3 USER DTAGMOSTIC Press the 2 key SETUP b The following screen will be displayed 1 RECORD II 2 RECORD 5 SAYE RESTORE RECORD 4 SET TIME LANGUAGE Press the 3 key RESTORE RECORD The following screen will be displayed 1 RESTORE RECORD 2 RECORD Z2 RECORD DIRECTORY 4 ERASE RECORD 5 COPY TO THUMB DRIVE Press the 4 key ERASE RECORD TRM 20 AND TRM 40 USER S MANUAL d The following screen will be displayed ERASE RECORD 1 ERASE SINGLE EEC ERASE ALL RECORDS STOP TO EXIT If you have a USB Flash drive inserted in the unit s USB MEM port the following screen will be displayed instead of the above screen 1 ERASE INTERNAL REC 2 ERASE THUME DRY REC Press the 1 key ERASE INTERNAL REC The following screen will be displayed ERASE RECORD 1 ERASE SIHGLE FEC 2 ERASE ALL RECORDS TO ERIT Continue with the steps below 1 ERASE SINGLE REC Press the 1 key ERASE SINGLE REC to erase a single record The following screen will be displayed ERASE RECORD
17. OHMS Re 3 412 MILLI OHMS I 40 034 AMPS TAP 1 RAISE 3 553 MILLI OHMS R2 3 528 MILLI OHMS I 40 032 AMPS TAP 2 RAISE 2 138 MILLI OHMS R 2 115 5 I 40 030 AMPS TAP 3 RAISE 1 434 MILLI OHMS R2 1 431 MILLI OHMS I 40 030 AMPS TRM 20 AND TRM 40 USER S MANUAL REV1 3 11 Performing a Special Resistance Test The Special Resistance Test is used to conduct a resistance test for a pre defined period ranging from 1 to 45 minutes The resistance data is recorded at one minute intervals Use the steps below to perform a Special Resistance Test Start from the START UP menu i RUN TEST ps ok TUF p 2 USER DIAGHOSTICS Press the 1 key TEST XFMR b The following screen will be displayed C 1 RESISTANCE TEST 2 SPECIAL RES TEST 2 LTC TEST 4 DEGAUSS WINDING Press the 2 key SPECIAL RES TEST The following screen will be displayed SPEC TEST E Wi E Hl y PEL TES T Press the 1 key V1 V2 SPEC TEST to perform a V1 amp V2 special resistance test Continue to step d Press the 2 key V1 ONLY SPEC TEST to perform a V1 special resistance test REV1 TRM 20 AND TRM 40 USER S MANUAL d The following screen will be displayed EHTER SPECIAL TEST TIME MINUTES 51 450 Enter the test time between 1 to 45 minutes using the alpha numeric keypad and then press the ENTER key e
18. Press the 1 key YES if you would like to print the restored test record on the unit s built in thermal printer You will be returned to the START UP menu after printing is finished Press the 2 key NO if you do not want to print the restored test record You will be returned to the START UP menu TRM 20 AND TRM 40 USER S MANUAL REV1 3 15 4 Restoring a Test Record From a USB Flash Drive Use the steps below to restore a test record from a USB Flash drive to the TRM s working memory Make sure the USB Flash drive containing the test record s is inserted the TRM s USB Flash drive port USB MEM port Then start from the START UP menu ai n 11 18 11 1 EUH TEST ene 2 SETUP 2c FF 5 USER DIAGHOSTICS Press the 2 key SETUP b The following screen will be displayed C 1 RECORD II 2 RECORD 5 SAYE RESTORE RECORD 4 SET TIME LANGUAGE Press the 3 key SAVE RESTORE RECORD The following screen will be displayed 1 RESTORE RECORD 2 RECORD 2 RECORD DIRECTORY 4 ERASE RECORD a COPY TO THUMB DEIVE Press the 1 key RESTORE RECORD REV1 TRM 20 AND TRM 40 USER S MANUAL d The following screen will be displayed 1 INTERNAL STORAGE 2 THUMB DRIVE Press the 2 key THUMB DRIVE e The following screen will be displayed RESTORE DRIVE REIS Type the record number that you would like to rest
19. START UP menu REV1 TRM 20 AND TRM 40 USER S MANUAL 2 PRINT TO PRINTER Press the 2 key PRINT TO PRINTER to print the test record on the unit s thermal printer You will then be returned to the START UP menu TRM 20 AND TRM 40 USER S MANUAL REV1 3 15 2 Saving Test Results to a Test Record After performing a test the user is presented the option to save the test results to the unit s Flash EEPROM or to a USB Flash Drive If the test results are not saved immediately after performing a test they will still remain in the working memory and can be saved later as long as a new test has not been performed and the unit has not been turned off Follow the steps below to save the test results from the working memory to a test record the following procedure can also be used to re save a restored test record to a new memory location or to a USB Flash Drive a Perform a test or restore a test record to the working memory and then start from the START UP menu Press the 2 key SETUP b The following screen will be displayed Press the 3 key SAVE RESTORE RECORD c The following screen will be displayed Press the 2 key SAVE RECORD REV1 TRM 20 AND TRM 40 USER S MANUAL If a USB Flash drive is connected to the unit continue to step d If a USB Flash drive is NOT connected to the unit continue to step e d The following screen will be displayed
20. displayed TEST RESULTS 1 YES wee HU 1 YES Press the 1 key YES to print the test results on the built in thermal printer A sample test results printout is shown in Figure 5 Continue to step n 2 NO Press the 2 key NO to bypass printing of the test results Continue to step n TRM 20 AND TRM 40 USER S MANUAL REV1 n The following screen will be displayed KEEP THIS READING ae 2 1 Press the 1 key YES to save the reading One of the following screens will be displayed The following screen will be displayed if there is no previous data in the memory TES SAVED The following screen will be displayed if previous data for the same test type is stored in the memory PREVIOUS DATA IH EUF 11 515 711 14 49 09 1 FREY DATA 2 CLEAR FREY DATA The TRM retains the current test results in its working memory When a test is finished the user can append the new test results to the previous test results in the working memory as long as the unit s power has not been turned off between tests Press the 1 key APPEND PREV DATA to append the current test results to the previous test results in the working memory Press the 2 key CLEAR PREV DATA to only save the current test results and discard any previous data from the working memory In either case press any key and continue to step o a REV1 TRM 20 AND TRM 40 USER S
21. pressing the corresponding key on the alpha numeric keypad d The following screen will be displayed THIS TARE SEVERAL MINUTES TO COMPLETE TO CONTINUE Press the ENTER key to continue REV1 TRM 20 AND TRM 40 USER S MANUAL e The degaussing process will start and updates will be displayed on the screen as shown below When the process is complete you will be returned to the START UP menu TRM 20 AND TRM 40 USER S MANUAL REV1 3 15 Working with Test Records 3 15 1 Viewing the Contents of the Working Memory Whenever a test is performed and the reading is kept the data is temporarily stored in the TRM s working memory You can view the test reading in the unit s working memory using the steps below a Start from the START UP menu Sal II TEC 114BT 11 1 RUN TEST BB 49 15 2 SETUP 22 TAF 2 USER DIAGHOSTICS Press the 2 key SETUP b The following screen will be displayed 1 RECORD II 2 PRINT RECORD 5 SAVE RESTORE RECORD 4 SET TIME LANGUAGE Press the 2 key PRINT RECORD The following screen will be displayed RECORD 1 FEIHT TO LCD z FRIHT TO PRINTER 1 PRINT TO LCD Press the 1 key PRINT TO LCD to view the test record on the LCD screen Use the PAPER v Contrast key to scroll to the next page Press the STOP key when you are done viewing the test record and you will be returned to the
22. ECORD HUMBER Continue with the steps below 1 ENTER RECORD NUMBER Press the 1 key ENTER RECORD NUMBER if you know the record number that you would like to restore The following screen will be displayed RESTORE RECORD HUMBER Type the record number using the alpha numeric keypad and then press the ENTER key The following screen will be displayed CONS TRM 20 AND TRM 40 USER S MANUAL REV1 RECORD RESTORED PRINT RECORD 2 HU Press the 1 key YES if you would like to print the restored test record on the unit s built in thermal printer You will be returned to the START UP menu after printing is finished Press the 2 key NO if you do not want to print the restored test record You will be returned to the START UP menu 2 SCROLL TO SELECT Press the 2 key SCROLL TO SELECT to scroll through a directory of the test records The following screen will be displayed FECORDIS DIRECTORY TO SCROLL FAD TO SCROLL Press the PAPER Contrast key or the PAPER v Contrast key to display the next or previous test record respectively The basic test record information will be displayed as shown below dle 4r HUM OF TESTS 2 vis Y2 TEST When you have located the test record that you would like to restore press the ENTER key The following screen will be displayed REV1 TRM 20 AND TRM 40 USER S MANUAL
23. GLE RECORD 2 ALL RECORDS 1 COPY SINGLE RECORD Press the 1 key COPY SINGLE RECORD to copy a single test record from the unit s Flash EEPROM to the connected USB Flash drive The following screen will be displayed EHTER RECORD HUMBER TO TO FLASH HUMBER Type the record number using the alpha numeric keypad and then press the ENTER key The test record will be copied to the USB Flash drive and the following screen will be displayed REC 811 SAYED T THUMB DRIVE Press any key to return to the START UP menu TRM 20 AND TRM 40 USER S MANUAL REV1 2 COPY ALL RECORDS Press the 2 key COPY ALL RECORDS to copy all test records from the TRM s Flash EEPROM to the connected USB Flash drive All test records will be copied from the unit to the connected USB Flash drive The following screen will be displayed when the process is finished Press any key to return to the START UP menu REV1 TRM 20 AND TRM 40 USER S MANUAL 3 15 6 Printing a Test Record Directory Use the steps below to print a directory of the test records stored in the TRM s Flash EEPROM a Start from the START UP menu 1 RUM TEST dde SETUP 4 12 12 15 3 USER DTAGMOSTIC Press the 2 key SETUP b The following screen will be displayed 1 RECORD II 2 RECORD 5 SAYE RESTORE RECORD 4 SET TIME LANGUAGE Press the 3 key SAVE RESTORE RECORD
24. M LCD screen output is shown as When instructions are provided the menu item that should be selected is printed in bold as shown below option 3 should be selected in this example Warning messages are indicated as Important notes are indicated as e TRM 20 AND TRM 40 USER S MANUAL REV1 1 0 INTRODUCTION 1 1 General Description and Features The TRM 20 and TRM 40 are Vanguard Instruments third generation transformer winding resistance meters The TRM line is designed specifically to measure DC resistance values of transformer windings rotating machine windings or any dc resistance of an inductive device The TRM line features dual resistance reading input channels that can measure two winding resistances simultaneously primary and secondary windings of a transformer Both the TRM 20 and TRM 40 can provide a fast and stable reading of very large transformers by utilizing a 60Vdc power supply The TRM 20 is capable of outputting a selectable test current from 1A to 20A while the TRM 40 s test current is selectable from 1A to 40A Since the TRM 20 and TRM 40 can accurately measure resistance values from 1 micro ohm to 2 000 Ohms they can be used as micro ohm meters to measure EHV circuit breaker contact resistance or for any low resistance measuring application If the transformer winding resistance temperature is available at the time of testing the TRM can calculate the equivalent resistance value at any tem
25. REV1 TRM 20 AND TRM 40 USER S MANUAL 3 10 Performing a Load Tap Changer Voltage Regulator Resistance Test The Load Tap Changer Voltage Regulator Resistance Test can be used to conveniently measure the resistance at each tap position Once the number of taps has been entered the TRM will request the user to set the tap position starting with the lower taps then to neutral and then to the raise taps At each tap position the resistance is measured displayed on the LCD screen and stored The TRM then instructs the user to change to the next tap position and repeat the testing process Use the steps below to perform an LTC Voltage Regulator Test a Start from the START UP menu 1 FUH TEST 11 8711 EEN 5 49 15 LI P LE Too 2 USER DIAGHOSTICS Press the 1 key RUN TEST b The following screen will be displayed 1 RESISTANCE TEST 2 SPECIAL RES TEST 2 DYNAMIC LTC TEST 4 DEGAUSS WINDING Press the 1 key RESISTANCE TEST c The following screen will be displayed LTC OF YTG FEGULATOR Wes b rm a H Li Press the 1 key YES TRM 20 AND TRM 40 USER S MANUAL d The following screen will be displayed EHTER OF RAISE HOT LOUNT Int 51 25 Type the number of taps the LTC or Voltage Regulator has using the alpha numeric keypad and then press the ENTER key We will enter 3 for our example e The following screen wi
26. RT UP menu 1 RUN TEST M EIS USER DIAGNOSTICS Press the 1 key RUN TEST b The following screen will be displayed RESISTANCE TEST 2 RES TEST 2 LTC TEST i DEGAUSS Press the 1 key RESISTANCE TEST c The following screen will be displayed LTC OF REGULATORY 2 NU Press the 2 key NO d The following screen will be displayed la Vis VZ RES TEST 2 V1 OHLY RES TEST Press the 1 key V1 V2 RES TEST if you would like to perform a V1 amp V2 test Press the 2 key V1 ONLY RES TEST if you would like to perform a V1 test only REV1 TRM 20 AND TRM 40 USER S MANUAL e The following menu will be displayed SELECT TEST CURRENT 1 fe gH 5 lun CUSTOM Select the test current by pressing the corresponding numeric key on the keypad Press the 6 key CUSTOM if you would like to enter a custom test current and then enter the current between 1A 40A on the next screen f The following screen will be displayed CONVERT READINGS TO STANDARD TEMP 1 YES Ze HO 1 YES Press the 1 key YES if you wish to convert readings to standard temperature The following screen will be displayed HIHIIMG MATERIAL 1 COPPER TEK2224 5 2 H UD LH s mem m MAHUALLY EHTEF TK Press the 1 key COPPER 234 5 to select copper as the winding material Continue t
27. TRM 20 and TRM 40 TRANSFORMER RESISTANCE METERS USER S MANUAL 4 Vanguard Instruments Company Inc WS 1520S Hellman Ave Ontario California 91761 USA 909 923 9390 August 2015 FAX 909 923 9391 Revision 1 3 TRM 20 AND TRM 40 USER S MANUAL REV1 SAFETY SUMMARY NOTICE This manual applies to both the TRM 20 TRM 40 transformer resistance meters The operating procedures are virtually the same for both models and any differences are clearly described where applicable FOLLOW EXACT OPERATING PROCEDURES Any deviation from the procedures described in this User s Manual may create one or more safety hazards may damage the TRM 20 40 damage the test transformer or cause errors in the test results Vanguard Instruments Company Inc assumes no liability for unsafe or improper use of the TRM 20 40 safety precautions provided in this manual must be observed during all phases of testing including test preparation test lead connection actual testing and test lead disconnection SAFETY WARNING AND CAUTIONS The TRM 20 40 shall be used only by trained operators All transformers under test shall be off line and fully isolated DO NOT MODIFY TEST EQUIPMENT To avoid the risk of introducing additional or unknown hazards do not install substitute parts or perform any unauthorized modification to any TRM 20 40 test unit To ensure that all designed safety features are maintained it is highly recomme
28. Test Record Header Information 20 37 Setting the Dat and TING Omm 24 3 8 Setting the Interface Language 25 39 3nPerformingaResIStanc8 estu uu uu u 26 3 10 Performing a Load Tap Changer Voltage Regulator Resistance Test 35 3 11 Performing a Special Resistance 0 000000 0 0 44 3 12 Performing a Dynamic LTC 202 0 0000 000 600000000000 nnns 51 3 13 Performing a Diagnostic KE 56 3 14 Demagnetizing the Transformer Core 0 0 0 0 044 4 0 1 58 3 15 Working with Test Records 60 3 15 1 Viewing the Contents of the Working Memory 60 3 15 2 Saving Test Results to a Test Record ue eee ias dr rn Sa t a e id 62 3 15 3 Restoring a Test Record From Flash 64 3 15 4 Restoring a Test Record From a USB Flash Drive 68 3 15 5 Copying Test Records to a USB Flash Drive 70 3 15 6 Printing a Test Record Directory serien dee 73 3 15 7 Erasing Test Records from the Flash EEPROM 75 3 16 Erasing Test Records from a USB Flash Drive
29. The following screen will be displayed Select the test current by pressing the corresponding numeric key on the keypad Press the 6 key CUSTOM if you would like to enter a custom test current and then enter the current between 1A 40A on the next screen f The following screen will be displayed CONVERT READINGS TU 1 YES Press the 1 key YES if you wish to convert readings to standard temperature The following screen will be displayed HIHDIHG MATERIAL 1 TE 234 5 ALUMINUM TEZZZ2S 8 2 MANUALLY ENTER TRM 20 AND TRM 40 USER S MANUAL REV1 Press the 1 key COPPER 234 5 to select copper as the winding material Continue to step g Press the 2 key ALUMINUM 225 to select aluminum as the winding material Continue to step g Press the 3 key MANUALLY ENTER to manually enter the Tk value The following screen will be displayed TO ADJUST TK TO ACCEPT You can increase the Tk value by 0 5 C increments by pressing the PAPER Contrast key You can decrease the Tk value by 0 5 C increments by pressing the PAPER v Contrast key Press the ENTER key to confirm the temperature setting Continue to step e 2 NO Press the 2 key NO if you do NOT wish to convert readings to standard temperature Continue to step I g The following screen will be displayed Hale Ee 25 89000 TT mF Tl TO ADJUST TK
30. d Click on the Next button The PC will scan for nearby devices and list all available Bluetooth devices Bluetooth Device Selection Select a device Remote devices must be in Discoverable mode for this computer to find them For assistance in making a remote device discoverable refer to the remote device s documentation Show all devices IF the device you looking for is nat in the list verify that the device has power and is operational some devices you must press the Connect button ta make the device discoverable REV1 TRM 20 AND TRM 40 USER S MANUAL will be listed as TRM S N where S N is the device s serial number Click on the icon for the TRM and then click on the Next button d The following window will be displayed asking for a secret key to connect to the r Bluetooth Security Setup Bluetooth Pairing Paired devices exchange a secret key each time they connect This key is unique for each pair of devices it is used to verify identity and to encrypt the data that the devices exchange To complete the pairing process type the required passkey and then click Next If you da not know the passkey see the instructions that came z Back Mext gt Cancel Type the word default without the quotes and in all lower case and then click on the Next button e The following window will be displayed with the option to co
31. e always disable USB and select serial port v Use USB Port COM Port com gt Graph and Overlay Settings N Foreground 70 soot Graph Main Graph Motor Current MEE EE TestCurent Export to Excel Make sure the Use USB Port option is UN checked Then from the COM Port drop down menu select the COM port that corresponds to the port that the TRM is connected to Then click the OK button The LTCA software will now recognize the TRM TRM 20 AND TRM 40 USER S MANUAL REV1 3 2 Connecting the TRM to a PC via Bluetooth The TRM can also be connected wirelessly to a PC using Bluetooth To connect the unit via Bluetooth it must first be paired with the PC Follow the steps below to pair the TRM to a PC via Bluetooth For Windows XP a Make sure the TRM is turned on Then double click on the Bluetooth system tray icon on the bottom right corner of your computer screen b The My Bluetooth Places window will be displayed My Bluetooth Places File Edit View Bluetooth Favorites Tools Help Address E my Buetooth Places 0 00 04 ge So Back e LC Search Folders Bluetooth Tasks Add a Bluetooth Device ae View My Bluetooth services View devices range gt View or modify configuration Click on Add a Bluetooth Device on the left window pane c The Bluetooth Setup Wizard window will be displaye
32. e following screen will be displayed after the last Raise position s resistance reading is stored FEINT RECORD 1 TES Ze 1 YES Press the 1 key YES to print the test results on the built in thermal printer A Typical LTC Voltage Regulator test report is shown in Figure 6 Continue to step r 2 NO Press the 2 key NO to bypass printing of the test results Continue to step r r The following screen will be displayed SAVE THIS RECORD 1 YES 1 YES Press the 1 key YES to save the test record The following screen will be displayed BU TRM 20 AND TRM 40 USER S MANUAL REV1 Press any key to return to the START UP menu 2 NO If you do not wish to save the test record press the 2 key NO The following screen will be displayed Press the 1 key DO NOT SAVE RECORD to NOT save the test record You will be returned to the START UP menu REV1 TRM 20 AND TRM 40 USER S MANUAL TEST RESULTS COMPANY VIC STATION LAB CIRCUIT 16R TO 16L MFR VIC MODEL TRM40 SN 42003 RTG 75 OPERATOR VN Ri 1 461 MILLI 0HMS R2 1 470 MILLI OHMS 40 043 AMPS TAP 2 LOWER R1 1 836 MILLI OHMS R2 1 820 MILLI OHMS I 40 037 AMPS TAP 1 LOWER Ri 3 232 MILLI 0HMS R2 3 210 MILLI OHMS I 40 037 AMPS Figure 6 Typical LTC Voltage Regulator Test Report Printout Test results continued TAP NEUTRAL R1 3 435 MILLI
33. es Connected COM 14 2 View devices in range Ch view or modify configuration Note the port number listed under the device name In the above case the port number is 14 Use this port number the LTCA software to connect to the REV1 TRM 20 AND TRM 40 USER S MANUAL For Windows 7 a Make sure the TRM is turned on Then double click on the Bluetooth system tray icon on the bottom right corner of your computer screen 9 52 AM 07 17 2012 A a 4 lt Devices and Printe Bluetooth Devices Search Devices and Printers p File Edit View Tools Help Add a device Add a printer No items match your search 0 items Click on Add a device TRM 20 AND TRM 40 USER S MANUAL REV 1 c All nearby Bluetooth devices will be listed Select a device to add to this computer Windows will continue to look for new devices and display them here a TRM 20 41003 1 Bluetooth Other What if Windows doesn t find my device The will be listed as TRM S N where S N is the device s serial number Click on the icon for the TRM and then click on the Next button d The device pairing screen will be displayed Select a pairing option gt Create a pairing code for me The device has a keypad TRM 20 41003 Enter the device s pairing code The device comes with a pairing code Check for one on the device or in the device manual Pair w
34. es a USB Flash drive interface port Up to 999 test records can be stored on a connected USB Flash drive 2000 M REV1 TRM 20 AND TRM 40 USER S MANUAL User Interface The features a back lit graphic LCD screen 124x64 that is clearly viewable in both bright sunlight and low light levels An alpha numeric keypad is used to enter test information and to operate the unit Computer Interfaces The TRM can be connected to a PC via the unit s RS 232C USB or Bluetooth interface A PC can be used to retrieve test records stored in the TRM or USB Flash drive or to run tests using the provided software Test records are automatically exported to PDF Excel and XML formats TRM 20 AND TRM 40 USER S MANUAL REV 1 1 2 Technical Specifications Table 1 TRM 20 40 Technical Specifications TYPE PHYSICAL SPECIFICATIONS OPERATING VOLTAGE RESISTANCE READING RANGE ACCURACY TEST CURRENT TEST VOLTAGE RESISTANCE CHANNELS DISPLAY PRINTER INTERNAL TEST RECORD STORAGE EXTERNAL TEST RECORD STORAGE COMPUTER INTERFACES SAFETY ENVIRONMENT HUMIDITY MAX ALTITUDE MAX CABLES OPTIONS WARRANTY Portable transformer winding resistance meter 21 W x 17 H x 9 D 53 cm x 43 cm x 24 cm Weight 33 Ibs 15 4Kg 100 240 Vac 50 60 Hz 1 micro ohm 2000 Ohms TRM 20 1 micro ohm to 500 Ohms TRM 40 1 19 999 micro ohms 0 5 reading 1 count 20 999 milliohms 1 reading 1 count 1
35. from the pop up menu h The properties window will be displayed Click on the Hardware tab TRM 20 Properties X 1 TRM 20 41003 Device Functions Ports COM amp LPT Device Function Summary Manufacturer Microsoft Location on Bluetooth Device RFCOMM Protocol TDI Device status This device is working properly Apply Note the port number listed after the device name COM23 in the above example Use this port number in the LTCA software to connect to the TRM REV1 TRM 20 AND TRM 40 USER S MANUAL 3 3 Typical Connections to a Load Tap Changer Figure 2 Typical Connections to a Load Tap Changer LTC 3 4 Typical TRM 20 40 Cable Connections Figure 3 Typical TRM Connections Diagram for A Dynamic Resistance Test Ce 20 TRM 20 AND TRM 40 USER S MANUAL REV 1 JUMPER Figure 4 Typical TRM Connections Diagram for 2 Windings REV1 TRM 20 AND TRM 40 USER S MANUAL 3 5 General Procedures The main steps for using the TRM are outlined below a Ground the TRM to the substation ground b Plug the TRM power cable into a power outlet c Insert current cable plugs and voltage sensing cable plugs into the corresponding control panel jacks d Attach the test cable clamps to the transformer terminal for the winding that is to be measured e Turn on the TRM f Theunit will self calibrate and then you will be presented with the START UP menu as shown below
36. he display duration of this message depends on the size of the winding s inductance l The TRM determines when the resistance reading is stable and shows the resistance value on the LCD screen as shown below the first line shows the remaining test time REMAIHIHG TIME 40 84 1 844 2 825 mQ ek REME EHERDGIZED I TEST RESULTS I KI y y E EHERDIZED Press key to continue REV1 TRM 20 AND TRM 40 USER S MANUAL m The following screen will be displayed 1 YES Press the 1 key YES to save the test record Continue to step m 2 NO Press the 2 key NO if you do not want to save the test record The following screen will be displayed Press the 1 key DO NOT SAVE RECORD if you do not want to save the record You will be returned to the START UP menu Press the 2 key SAVE RECORD to save the record Continue to step m n The following screen will be displayed 4 Press any key to return to the START UP menu K feg TRM 20 AND TRM 40 USER S MANUAL REV 1 RECORD NUMBER 79 TEST RESULTS DATE 11 07 11 TIME 14 59 54 VIC LAB 16 TO 16L VIC TRMAO 42003 TSKVA OPERATOR VN amp V2 SPECIAL TEST TESTED 20 AMPS O MIN Ri 1 702 MILLI OHMS R2 1 963 MILLI OHMS 20 016 AMPS 1 701 MILLI OHMS 1 968 MILLI OHMS 20 017 AMPS Figure 7 Typical Special Test Report Printout REV1 TRM 20
37. ithout using a code This type of device such as a mouse does not require a secure connection How I tell if my device has a pairing code Click on Enter the device s pairing code option BEES S E REV1 TRM 20 AND TRM 40 USER S MANUAL e The following window will be displayed Enter the pairing code for the device This will verify that you are connecting to the correct device l The code is either displayed on your device or in the information that came with the device TRM 20 41003 What if I can t find the device pairing code Type the word default without the quotes and in all lower case in the text box and click on the Next button f The following screen will be displayed This device has been successfully added to this computer Windows is now checking for drivers and will install them if necessary You may need to wait for this to finish before your device is ready to use To verify if this device finished installing properly look for it in Devices and Printers TRM 20 41003 Click on the Close button TRM 20 AND TRM 40 USER S MANUAL REV 1 g The TRM will now be listed under Bluetooth Devices 9 Ci w lt Devices Printe Bluetooth Devices v Search Devices and Printers p File Edit View Tools Help Add a device Add a printer 4 Devices 1 3 TRM 20 41003 Right click on the TRM 20 icon and select Properties
38. key USER DIAGNOSTICS b The following screen will be displayed 5 A me CLES TOM Select the test current by pressing the corresponding numeric key on the keypad Press the 6 key CUSTOM if you would like to enter a custom test current and then enter the current between 1A 40A on the next screen c The following warning screen will be displayed suene DANGEROUS FLASH OVER HILL IF CABLES DIZCDOHHECTELD i r rh rt rt e vn Press any key to continue REV1 TRM 20 AND TRM 40 USER S MANUAL d The following screen will be displayed Press the START key e The V1 V2 and test current I will be displayed as shown below Press the STOP key to end the test and return to the START UP menu TRM 20 AND TRM 40 USER S MANUAL REV1 3 14 Demagnetizing the Transformer Core You can demagnetize the transformer core using the steps below a Start from the Start Up menu 1 FUH TEST 118711 2 SE DOS 15 for E F XL Too 2 USER DInpGHOSTICS Press the 1 key RUN TEST b The following screen will be displayed RESISTANCE TEST 2 SPECIAL RES TEST 2 LTC TEST 4 DEGAUSS WINDING Press the 4 key DEGAUSS WINDING c The following screen will be displayed DEGAUSS CURRENT 1 0 2 1 2 2 AMPS 4 2 AMPS a LE AMPS Select the degaussing current by
39. ll be displayed f Z2 LOMERs 3 RAISE IS THIS CORRECT YES Z HD If the tap information is correct press the 1 key YES and continue to step f If the tap information is incorrect press the 2 key NO and return to step d The following screen will be displayed 1 Vis Ve RES TEST 2 1 ONLY REST TEST Press the 1 key V1 V2 RES TEST if you would like to perform a V1 amp V2 test Continue to step g Press the 2 key V1 ONLY RES TEST if you would like to perform a V1 test only Continue to step g REV1 TRM 20 AND TRM 40 USER S MANUAL g The following screen will be displayed SELECT TEST CURRENT 1 fe gH 5 lun CUSTOM Select the test current by pressing the corresponding numeric key on the keypad Press the 6 key CUSTOM if you would like to enter a custom test current and then enter the current between 1A 40A on the next screen h The following screen will be displayed CONVERT READINGS TO STANDARD TEMP 1 YES Ze HO 1 YES Press the 1 key YES if you wish to convert readings to standard temperature The following screen will be displayed HIHIIMG MATERIAL 1 COPPER TEK2224 5 za s mem m MAHUALLY EHTEF TK Press the 1 key COPPER 234 5 to select copper as the winding material Continue to step i Press the 2 key ALUMINUM 225 to select aluminum as the winding material Continue to step i Pre
40. nded that repairs be performed only by Vanguard Instruments Company factory personnel or by an authorized repair service provider Unauthorized modifications can cause safety hazards and will void the manufacturer s warranty WARNING Do not remove test leads during a test Failure to heed this warning can result in electrical shock to personnel and damage to the equipment REV1 TRM 20 AND TRM 40 USER S MANUAL TABLE OF CONTENTS CONVENTIONS USED IN THIS DOCUMENT 1 LO uU sPpUSis 2 11 General Description e qa egeo eR Soho ax Saa r 2 1 2 Technical Specifications 4 L3 TRM Controls and Rue et EC 5 20 PRI P TILL a cepi uem tU E E 6 21 Op rating Voltages RE 6 22 LCD Screen Contrast E 6 23 PAC PAD Cl eng E 6 240 Primer Pap 6 2 5 Replacing the Thermal Printer 2 2 0 440 6 7 22 OPERATING Dee REI 8 3 1 Configuring the LTCA Software for use with the TRM 8 3 2 Connecting the to a PC via Bluetooth 1 000 224 6 10 3 3 Typical Connections to a Load Tap Changer LTC 17 3 4 Typical TRM 20 40 Cable Conpnections eene nnns 17 SEENEN 19 3 6 Entering
41. nguard Instruments Co Inc 1520 S Hellman Avenue Ontario CA 91761 Tel 909 923 9390 Fax 909 923 9391 Part Number VIC TP 3 paper BG Instrument Co 13607 E Trent Avenue Spokane WA 99216 Tel 509 893 9881 Fax 509 893 9803 Part Number VIC TP 3 paper REV1 TRM 20 AND TRM 40 USER S MANUAL 2 5 Replacing the Thermal Printer Paper The roll of thermal paper is housed inside a dispenser underneath the printer cover To replace the paper follow the steps below Unscrew the two large printer cover screws and remove the printer cover e Remove the leftover thermal paper roll from the paper holder Unroll the new thermal paper roll Feed the thermal paper into the slot between the paper pocket and the rubber roller The printer will automatically pull the paper under the thermal head e Place the paper roll into the paper holder e Lift the thermal head and align the thermal paper if necessary e Re install the printer cover TRM 20 AND TRM 40 USER S MANUAL REV 1 3 0 3 1 OPERATING PROCEDURES Configuring the LTCA Software for use with the TRM The TRM can be used with a PC using the Vanguard LTCA software Follow the steps below to properly connect the TRM and configure the LTCA application to recognize the unit b Install the LTCA software please see the LTCA software user s manual for details Connect the TRM to the PC by connecting a USB cable from an open USB port on the PC to the u
42. nit s USB PC port Turn on the power on the TRM If this is the first time you are connecting the unit to the PC Windows will recognize it as a new device and automatically install necessary drivers If using Windows XP you may be prompted to install drivers Select the automatic installation option and Windows will locate the generic drivers necessary Please note that although the unit is connected via USB it uses an internal serial interface to communicate with the PC As such it will appear in the windows Device Manager as a USB Serial Port Open the Device Manager from the Windows Control Panel and note the COM port number For example in the installation shown below the is shown as COM10 USB Serial Port gt Device Manager File Action View Help E EP DB Computer Ze Disk drives E Display adapters b DVD CD ROM drives ie Floppy disk controllers i H Floppy disk drives ka Human Interface Devices IDE ATA ATAPI controllers cw Keyboards Mice and other pointing devices SS Monitors BB Network adapters ERM Belkin Wireless G Desktop Card 2 B Realtek RTL8168 8111PCI E Gigabit Ethernet NIC GN Ports amp LPT USB Serial Port COM10 Processors COM 71 REV1 TRM 20 AND TRM 40 USER S MANUAL f Launch the LTCA application and then click on the Settings icon The following window will be displayed Application Setup Communications For Devic
43. nnect to the as a serial port Bluetooth Service Selection k Select the services you are interested in The following services are available through the selected Bluetooth Device Select the service that you want to access on the selected device Connect to this service Establish a virtual serial port connection with a remote Bluetooth device The connection can then be used by any Configure application that supports the COM port number assigned Make sure to check the box next to AT Serial and then click on the Next button DO 0 TRM 20 AND TRM 40 USER S MANUAL REV1 f The following confirmation screen will be displayed Bluetooth Setup Wizard Completion Page _ Wizard d NEL J TRM 20 41003 AT Serial Completing Bluetooth Setup TN IAN Connect to the remote device using this connection shortcut Create a shortcut and then restart this wizard so that can create additional shortcuts To complete this connection click Finish Click on the Finish button The TRM 20 will now be displayed in the My Bluetooth Places window My Bluetooth Places Fie View Bluetooth Favorites Tools Help Address Bluetooth Places Om O A Pme bmn B TRM 20 41003 Bluetooth Tasks 6 Add a Bluetooth Device TRM 20 41003 Serial onnected COM14 View My Bluetooth servic
44. o step g Press the 2 key ALUMINUM 225 0 to select aluminum as the winding material Continue to step g Press the 3 key MANUALLY ENTER to manually enter the Tk value The following screen will be displayed LIUM TRM 20 AND TRM 40 USER S MANUAL REV1 TL TO ADJUST TK T You increase the Tk value by 0 5 C increments by pressing the PAPER Contrast key You can decrease the Tk value by 0 5 C increments by pressing the PAPER v Contrast key Press the ENTER key to confirm the temperature setting Continue to step g 2 NO Press the 2 key NO if you do NOT wish to convert readings to standard temperature Continue to step i g The following screen will be displayed TO ADJUST TK TO ACCEPT Use the PAPER Contrast and PAPER v Contrast keys to adjust the D U T Device Under Test temperature Press the ENTER key to confirm the D U T temperature setting h The following screen will be displayed DC 167 BOF Tl TO ADJUST TE TO ACCEPT Use the PAPER Contrast and PAPER v Contrast keys to adjust the reference temperature Press the ENTER key to confirm the reference temperature setting REV1 TRM 20 AND TRM 40 USER S MANUAL i Thefollowing warning screen will be displayed This warning is a reminder that the next sequence of test ste
45. ore using the alpha numeric keypad and then press the ENTER key f Thetest record will be restored to the unit s working memory and the following screen will be displayed REC 881 RESTORED PRINT RECORD 1 YES 2 HU Press the 1 key YES if you would like to print the restored test record on the unit s built in thermal printer You will be returned to the START UP menu after printing is finished Press the 2 key NO if you do not want to print the restored test record You will be returned to the START UP menu TRM 20 AND TRM 40 USER S MANUAL REV1 3 15 5 Copying Test Records to a USB Flash Drive Use the steps below to copy one or all test records from the unit s Flash EEPROM to a connected USB Flash drive a Make sure a USB Flash drive is connected to the unit s USB MEM port and then start from the START UP menu 1 RUM TEST rs 2 SETUP 29D FEF 2 USER DIAGMOSTICS Press the 2 key SETUP b The following screen will be displayed 1 RECORD II 2 RECORD 5 SAYE RESTORE RECORD 4 SET TIME LANGUAGE Press the 3 key SAVE RESTORE RECORD The following screen will be displayed RESTORE RECORD 2 RECORD 5 RECORD DIRECTORY 4 ERASE RECORD COPY TO THUMB DRIVE Press the 5 key COPY TO THUMB DRIVE REV1 TRM 20 AND TRM 40 USER S MANUAL d The following screen will be displayed CORY REC TO THUMB DEY l LOFTY SIH
46. perature value This useful feature allows the user to compare the field readings against the factory test resistance values A special test mode allows the TRM to collect data automatically for up to 90minutes at 60 second sampling interval or 45 minutes at 30 second sampling interval Test data is recorded with a time stamp All test results can be printed on a 2 5 wide thermal printer Test record header information including the company substation name transformer information can also be entered using the 16 key key pad The TRM 20 and TRM 40 can also demagnetize the inductive device under test eliminating the manual task of demagnetizing the transformer core after a resistance test The TRM also has a make before break test mode that can be used to test the load tap changer LTC or voltage regulator test sequence The TRM produces a Dynamic Resistance graph of the LTC or voltage regulator contact under operation An opened contact can be detected visually from this resistance chart The TRM s built in LTC Voltage regulator can be used to change the LTC Voltage regulator tap position from the TRM front panel Safety Features The TRM automatically dissipates the energy stored in the transformer at the end of each test The discharge circuit will continue to work even if the TRM power supply is lost Test Record Storage The TRM can store up to 100 test records internally For external test record storage the TRM featur
47. ps will run current through the test load Press any key to continue j The following screen will be displayed Press the START key to run the test k The following screen will be displayed momentarily TRM 20 AND TRM 40 USER S MANUAL REV1 After the TRM finishes its internal calibration the following screen will be displayed This is only an informational screen to remind the operator that a test is in progress The display duration of this message depends on the size of the winding s inductance The TRM determines when the resistance reading is stable and displays the resistance values on the LCD screen as shown below The TRM will continue the test and update the resistance values on the LCD screen While the test is in progress you can press the ENTER key to save the current readings from the LCD screen to the TRM s internal working memory You can store up to 99 readings per test If the ENTER key is pressed the data is saved and the following screen will be displayed on the LCD screen REV1 TRM 20 AND TRM 40 USER S MANUAL Once the data is saved the following screen will be displayed PROGFESS 14 owe D 198 81 ARPS 1 465 mQ 1 442 mQ FMR ENERGIZED Press the STOP key to stop running the test The test results will be displayed as shown TEST FESULTS iB B81 mlPz 1 465 mQ 1 445 mQ Press any key to continue m The following screen will be
48. s and hold the RAISE or LOWER LTC control button on the front panel Release the button when the tap position has been set to the position indicated on the screen Press the START key m The following screen will be displayed momentarily n TRM 20 AND TRM 40 USER S MANUAL REV1 After the TRM finishes its internal calibration the following screen will be displayed CHAR IHE FLEASE WAIT 1 81 AMPS FMR ENERGIZED The determines when the resistance reading is stable and displays the resistance values on the LCD screen as shown below TEST FEDDGEESS 14 48 84 AMPs 1 461 mQ 1 469 mQ FMR ENERGIZED Press the ENTER key to accept and save the readings The following screen will be displayed TEST PROGRESS 14 gt SAVING TEST lt 48 84 AMPS 1 469 EHERDIZED PROGRESS 14 of SAVED lt 40 84 AMPS 1 461 mQ 1 469 m REV1 TRM 20 AND TRM 40 USER S MANUAL p After saving the readings the following screen will be displayed SET TO LOWER L START TO CONTIHUE FMR ENERGIZED Set the LTC or Voltage Regulator tap position to the position indicated on the LCD screen and press the START key The TRM will continue the test and display the results as in step n Repeat steps through o for all Lower positions and then through all Raise positions q Th
49. ss the 3 key MANUALLY ENTER to manually enter the Tk value The following screen will be displayed 000000000 0 TRM 20 AND TRM 40 USER S MANUAL REV1 TL TO ADJUST TK T You increase the Tk value by 0 5 C increments by pressing the PAPER Contrast key You can decrease the Tk value by 0 5 C increments by pressing the PAPER v Contrast key Press the ENTER key to confirm the temperature setting Continue to step i 2 NO Press the 2 key NO if you do NOT wish to convert readings to standard temperature Continue to step k i Thefollowing screen will be displayed TO ADJUST TK TO ACCEPT Use the PAPER Contrast and PAPER v Contrast keys to adjust the D U T Device Under Test temperature Press the ENTER key to confirm the D U T temperature setting j The following screen will be displayed DC 167 BOF Tl TO ADJUST TE TO ACCEPT Use the PAPER Contrast and PAPER v Contrast keys to adjust the reference temperature Press the ENTER key to confirm the reference temperature setting REV1 TRM 20 AND TRM 40 USER S MANUAL N k The following screen will be displayed Press any key to continue l Thefollowing screen will be displayed Set the LTC or Voltage Regulator tap position to the position indicated on the screen To change tap positions pres
50. ter Changer Raise amp Lower 128 x 64 pixels Connector with Stud Interface Control Fuses Viewable in direct Third wire USB Computer sunlight and low light Safety Ground Interface Bluetooth Indicator dA b ros Bi TRANG ORME ERATE sar FE H Voltage Sensing Current LTC Rugged Connector Jacks Lead Raise and Lower Membrane Keypad Conenctors Switches Voltage Presence Transformer Warning Energy Discharge Indicator Indicator Figure 1 TRM 20 40 Controls and Indicators 2 5 Wide Thermal Printer Ce TRM 20 AND TRM 40 USER S MANUAL REV1 2 0 PRE TEST SETUP 2 1 Operating Voltages The TRM s operating voltages are 90 240 Vac 50 60 Hz 2 2 LCD Screen Contrast Control To increase the LCD screen contrast press and hold the PAPER Contrast key for two seconds To decrease the LCD screen contrast press and hold the PAPER v Contrast key for two seconds 2 3 Printer Paper Control To advance the TRM printer paper press and release the PAPER Contrast key To retract the TRM printer paper press and release the PAPER v Contrast key 2 4 Printer Paper The TRM s built in thermal printer uses 2 5 inch wide thermal paper for printing test results To maintain the highest print quality and to avoid paper jams the use of thermal paper supplied by Vanguard Instruments Company is highly recommended Additional paper can be ordered from the following sources Va

TRM-20/40 User`s Manual - Vanguard Instruments Company, Inc.

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