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EZCT-2000B - Vanguard Instruments Company, Inc.

1. 82 3 5 10 Unloading a Test Plan from the Working Memory 87 4 0 CHANGING SETUP PARAMETERS eee acest rear pea in ud 88 41 Setting the Knee Point dan Ses 88 EZCT 2000B USER S MANUAL REV1 4 2 Enabling and Disabling the Buried CT in Transformer Delta Option 90 4 2 1 Enabling the Buried CT in Transformer Delta Option 90 4 2 2 Disabling the Buried CT in Transformer Delta 91 43 Setting th Clock 95 5 0 DIAGNOSTICS VERIFICATION AND TROUBLESHOOTING 97 5 1 Performing a Diagnostics Test 97 5 2 Verifying the EZCT 2000B s V Sense Circuit Using an External Meter 99 5 3 Verifying the EZCT 2000B s Sense Circuit Using an External Meter 100 5 4 Quickly Verifying the EZCT 2000B s Turns Ratio Circuit 101 55 Troubleshooting Guide 554 pue ne os aasawa aa 102 6 0 UPGRADING FI
2. 14 Fig re 8 Sample CT Name vada nus natu du 15 Figure 9 Typical EZCT 2000B Tabulated Report Printout 27 Figure 10 Typical EZCT 2000B Graphic Report with Multiple Plot 29 Figure 11 EZCT 2000B Typical Burden Test Results Report 34 Figure 12 EZCT 2000B Typical Insulation Resistance Test Results Report Printout 39 Figure 13 Typical Internal Test Record Directory Printout 52 Figure 14 Typical USB Flash Drive Record Directory Printout 54 Figure 15 Typical EZCT 2000B Flash EEPROM Test Plan Directory Printout 67 Figure 16 Typical USB Flash Drive Test Plan Directory Printout 69 Figure 17 Typical Test Plan PrihtOu Chu RR n SUD Rn vL Cu 71 Figure 18 Graphic Report Showing Knee Point Marker 89 Figure 19 Buried CT in a Delta Transformer Illustration 1 93 Figure 20 Buried CT in a Delta Transformer Illustration 2
3. 93 Figure 21 EZCT 2000B V Verification Test Connections 99 Figure 22 EZCT 2000B I Verification Test Connections 100 0 REV1 EZCT 2000B USER S MANUAL Figure 23 EZCT 2000B Turns Ratio Verification Test Connections 101 FIGURE 29 m H 107 sil uy M 108 p 109 PORE GE E NALE 110 du icm 111 aU ED 112 IU LII LITTLE 113 E ana 114 114 REV1 7 2000 USER S MANUAL CONVENTIONS USED IN THIS DOCUMENT This document uses the following conventions e Akeyorswitch on the EZCT 2000B is indicated as KEY e Menu options are referenced as MENU OPTION e Screen and menu names are referenced as SCREEN MENU e The terms test record and test shot used interchangeably e The terms USB Flash drive and USB thumb drive are used interchangeably e EZCT 2000B LCD screen output is show
4. 11 11 11 TEST FLAHS DIAGHOSTICS CURRENT SOURCE Press the 3 key TEST PLANS b The following screen will be displayed LOAD TEST FLA UHLIA TEST FLAH DIRECTORY TEST FLAH FRIHT TEST FLAH ERASE TEST FLAH CORY TO THUMB DRIVE H Press the 6 key ERASE TEST PLAN c The following screen will be displayed ERASE TEST FLAH 1 ERASE SIHGLE PLAH 2 ERASE ALL PLANS The above screen will displayed only if a USB Flash drive is connected to the EZCT 2000B s USB Flash drive port If a USB Flash drive is connected the following screen will be displayed NOTE 1 ERASE IHTERHRAL FLAH 2 ERASE DRY PLAH Press the 1 key ERASE INTERNAL PLAN The following screen will be displayed REV1 EZCT 2000B USER S MANUAL ERASE TEST FLAH 1 ERASE SIHGLE PLAH 2 ERASE ALL PLANS Continue with the steps below 1 ERASE SINGLE PLAN Press the 1 key if you would like to erase a single test plan The following screen will be displayed ERASE TEST FLAH HUMBER Type the test plan number that you would like to erase and press the ENTER key e You press the STOP key to cancel the process e If you do not know the test plan number you can print a test NOTES plan directory using the instructions in section 3 5 2 The selected test plan will be erased and the following screen will be displayed TEST PLAN
5. SOURCE Press the 1 key RUN TEST EZCT 2000B USER S MANUAL REV1 c following screen will be displayed RES ERCIT RATIO ERCITATIOH amp RATIO EXCITATION ONLY RATIO OHLY RESISTAHCE EXCIT TEST OHLY IHSULATION TST OHLY um 2 5 4 T Press the 7 key INSULATION TST ONLY d The following screen will be displayed EHTER TEST 1 HOTE TO POSITIONH EHTER TO ACCEPT Use the alpha numeric keypad to enter a test note and then press the ENTER key e The following screen will be displayed IHS RES TEST VOLTAGE 1 S8 2 lmamv Select the test voltage by pressing either the 1 key 500V or the 2 key 1000V f The following screen will be displayed TEST 1 PARAMETERS IMS RES TEST IHS REST TEST CABLES START TO Connect the insulation resistance cables and then press the START key REV1 EZCT 2000B USER S MANUAL g following screen will be displayed When the test is completed the test results will be displayed temporarily The following screen will then be displayed Print the 1 key YES if you would like to print the test results The test results will be printed on the thermal printer A typical insulation resistance test results report is shown in Figure 12 Press the 2 key NO if you do not want to print the test results EZCT 2000B USE
6. The above screen will be displayed only if a USB Flash drive is NOT connected to the EZCT 2000B s USB Flash drive port If a USB Flash drive is connected the following screen will be displayed NOTE 1 ERASE IHTERHAL REC 2 ERASE THUMB DRY REC Press the 1 key ERASE INTERNAL REC The following screen will be displayed 200 REV1 EZCT 2000B USER S MANUAL ERASE RECORD 1 ERASE SINGLE FEC 2 ERASE ALL RECORDS Continue with the steps below 1 ERASE SINGLE REC Press the 1 key if you would like to erase a single record The following screen will be displayed ERASE RECORD HUMBER Type the record number to be erased and press the ENTER key e Youcan press the STOP key to cancel the process e f you do not know the record number you can first print a test NOTES record directory using the instructions in section 3 4 4 The following screen will be displayed momentarily ERASING RECORD HUMBER 81 PLEASE WAIT Then the following confirmation screen will be displayed RECORD HUMBER 1 ERASED Press any key to return to the START UP menu EZCT 2000B USER S MANUAL REV1 2 ERASE ALL RECORDS Press the 2 key if you would like to erase all of the test records stored in the EZCT 2000B s flash EEPROM The following confirmation screen will be displayed ERASE ALL RECORDS YOU SURE ENTER TO COHMTIHUE If you would like to cancel the erasur
7. HEST PAGE Press the 6 key NEXT PAGE The following screen will be displayed 4 SET TIME BURIED CT DELTA POINT MARKER FAM DATA Press the POINT MARKER REV1 7 2000 USER S MANUAL d The following screen will be displayed 1 IEEE DEGREE 2 IEEE 4 DEGREE 5 1HcVv 5H8AI Press either the 1 key IEEE 30 DEGREE the 2 key IEEE 45 DEGREE or the 3 key IEC 10 gt 50 to select the desired knee point marker The knee point marker will be set and you will be returned to the START UP menu A graphic report showing the knee point marker is shown in Figure 18 Knee Point Knee Point Marker SESS E Bill ooo T LLL TEE MLA MA 1 104 10 Figure 18 Graphic Report Showing Knee Point D gt CT EXCITATION PLOT 14107 50 KNEE MARKER EZCT 2000B USER S MANUAL REV1 42 Enabling and Disabling the Buried CT in Transformer Delta Option 4 2 1 Enabling the Buried CT in Transformer Delta Option Ifyou are measuring the turns ratio of a CT buried in the transformer Delta windings see Figure 19 and Figure 20 and also page 92 for further information you must first select the Buried CT in Delta option from the SETUP menu using the steps below a Start f
8. The following screen will be displayed 1 BURIED CT DELTA 2 BURIED CT DELTA OFF Press the 2 key BURIED CT DELTA OFF The following screen will be displayed BURIED IH DELTA TS RATIOS DISPLAYED AS Press key to return to the START UP menu REV1 EZCT 2000B USER S MANUAL Vh 081121EZCT2kV667D Figure 19 Buried CT in a Delta Transformer Illustration 1 081121EZCT2kV667E Figure 20 Buried CT in a Delta Transformer Illustration 2 EZCT 2000B USER S MANUAL REV1 REV1 EZCT 2000B USER S MANUAL 43 Setting the Clock To set the EZCT 2000B s internal clock a Start from the START UP menu 1 TEST 2 SETUP 18 14 25 5 TEST PLANS 4 DIAGHOSTICS a CURREHT SOURCE Press the 2 key SETUP b The following screen will be displayed RECORD IL FRIHT RECORD RECORD DIRECTORY SAVYE RESTORE RECORD ERASE HEST PAGE Press the 6 key NEXT PAGE c The following screen will be displayed 1 SET TIME 2 BURIED CT IH DELTA 5 POINT MARKER 4 RAH DATA Press the 1 key SET TIME d The following screen will be displayed HH MM SS Enter the month date time hours minutes and seconds 24 hour format using the alpha numeric keypad When the last digit is entered the clock will be set and you will be returned
9. EHTER FLATE RATIO EHTER PLATE RATIO 1808 m a lana 3 8 Type the second number using the keypad and then press the ENTER key Continue to step g 2 NO Press the 2 key if you do not want to enter the CT nameplate values Continue to step g g The following screen will be displayed EHTER TEST 1 TL TO POSITION ENTER TO ACCEPT Use the alpha numeric keys on the keypad to enter a test note The test note field is 20 characters long One test note can be saved for each test 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 button 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 note h The following screen will be displayed CALC ERR VS 1 2 Press the 1 key YES Selecting this option will print the current ratio error table current phase error table as part of the tabulated test results Please see Figure 9 items 19 and 20 EZCT 2000B USER S MANUAL REV1 j The following screen will be displayed Type the burden v
10. 100 120 Vac or 200 240 Vac factory pre set 50 60 Hz ANSI IEEE C57 12 90 IEC 60044 1 and ANSI IEEE C57 13 1 standards 0 50 Vac 10A max 0 300 Vac 10A max 0 500 Vac max 0 1200 Vac 1 2A max 0 2000 Vac 1 max 1 20A 0 15 Vac Test current and current on time 0 2 200 Vac Accuracy 1 0 of reading 1 V 0 10A Accuracy 1 0 of reading 0 02A 0 8 999 0 196 1000 1999 0 396 2 000 5 000 196 0 360 degrees Accuracy 1 0 degree 100 micro ohms 10 ohms Accuracy 2 of reading 1 count 2 Mega ohms 500 Mega ohms Accuracy 396 of reading 500 Vdc or 1000 test voltage Back lit LCD Screen 128 x 64 dot graphic viewable in bright sunlight and low light levels Built in 4 5 inch wide thermal printer One RS 232C 115 000 Baud port One USB port One USB Flash drive interface port Windows XP Vista based CT Analysis software is included with the purchase price Stores 140 test records Each test record may contain up to 10 saturation curves current ratio readings polarity and DC resistance readings insulation resistance test results and CT load burden test results Stores 128 test plans A test plan consists of the saturation test voltage current selection CT nameplate ratios and CT winding terminal combinations X1 to X5 for each test Designed to meet UL 6110A 1 and CAN CSA C22 2 No 1010 1 92 standards Operating 10 C to
11. aza o0 oO o07T6e AMPS IEEE 30 vouTs o ceso AMPS reese 452 IEEE 45 Ikp 1 NAME PLATE RATIO 1000 5 MEASURED RATIO 199 97 PERCENT ERROR POLARITY OUT Or PHASE PHASE ANGLE 92 EXCITATION 78 9 VOLTS Sx lt CITATION cur 16 AMPS CURRENT RATIO ERROR TABLE BURDEN PERCENT RATED CURRENT 5 0 A Cos p sox 100 120 200 10 00 0 20 0 10 0 08 0 07 0 06 5 00 0 20 0 07 0 06 0 06 0 05 2 50 0 20 0 06 0 05 0 05 0 04 1 25 0 20 O 0 04 0 00 1 00 0 0 03 va 2 cos p 40 10 00 2 0 20 O 10x 5 00 O 20 0 08 2 50 2 0 20 0 07 1 25 0 20 0 06 0 00 1 00 0 05 CURRENT PHASE ERROR TABLE lt PHASE ERROR IN MINUTES gt BURDEN PERCENT RATED CURRENT 5 0 A 2 cose Sox 100 120 200 10 00 0 20 0 17 0 23 0 25 0 30 5 00 0 20 0 64 0 43 0 40 0 29 2 50 2 0 20 1 07 0 80 0 73 0 60 1 25 0 20 1 31 0 99 0 92 0 7 0 00 2 1 00 1 54 1 18 1 10 0 93 va 7 cos p sx 10 20 40 10 00 0 20 O O9 O O09 0 09 0 13 5 00 0 20 1 03 1 02 1 02 0 69 2 50 2 0 20 1 53 1 54 1 53 1 18 1 29 0 20 1 80 1 80 1 81 1 45 9 00 2 1 00 2 07 2 07 2 07 1 70 BURDEN TEST RESULTS x AMP BURDEN TEST MEAS CURRENT A MEAS VOLTAGE es ses v 29 0 IMPEDANCE lt Z gt 47 330 OHMS BURDEN e o vae cose o ec V INSULATION RES TEST VOLTAGE asce c v CURRENT 5 03 MICRO AMPS RE
12. 1773 SETUP 18 10 10 TEST PLAHS DIAGHOSTICS CURRENT SOURCE Press the 3 key TEST PLANS b The following screen will be displayed LOAD TEST PLA UHLIA TEST FLAH FLAH DIRECTORY TEST FLAH FRIHT TEST FLAH ERASE TEST COPY TO THUME DRIVE Press the 1 key LOAD TEST PLAN c The following screen will be displayed 1 IHTERHRAL STORAGE 2 DRIVE Press the 2 key THUMB DRIVE d The following screen will be displayed LOAD TEST HUMBER Type the test plan number that you would like to load and press the ENTER key If you do not know the test plan number you can print a test plan directory using the instructions in section 3 5 3 REV1 EZCT 2000B USER S MANUAL e The following screen will be displayed manc LOADED SAVE PLAH IHTERHBLL 1 1 YES 2 1 YES Press the 1 key if you would like the loaded test plan to be also saved in the EZCT 2000B s Flash EEPROM Any existing test plans in the EZCT 2000B s Flash EEPROM will not be over written The EZCT 2000B will automatically assign a new test plan number and store the test plan in the next available memory location The following screen will be displayed TEST SAVED Press any key to return to the START UP menu 2 NO Press the 2 key if you do not want to save the loaded test plan in the EZCT 2000B s Flash
13. COMPLETE REACTOR MASS 160695 Jib 72890 _Jk CT s 7 TO 12 mmo mana seo 299 54 x xs 509 54 xi x5 1000 54 xz xs 1000 34 xr x 90 54 x32x5 3500 54 5 xi xe 5 xz x 2500 94 x2 x 500 34 xy x 2000 94 400 5 1500 5 arsu 200 54 xi xz 500 54 FUNCTION MADE IN BRAZIL ALSTOM Grid Energia Lida AV GUILHERME SCHELL 11500 CANOAS RS CNPJ 05 356 949 0009 08 Figure 32 Vanguard Instruments Company Inc 1520 S Hellman Ave e Ontario CA 91761 e USA Phone 909 923 9390 e Fax 909 923 9391 www vanguard instruments com Copyright 2014 by Vanguard Instruments Company Inc EZCT 2000B User s Manual e Revision 1 9 e June 4 2014 e TA
14. mE REV1 EZCT 2000B USER S MANUAL r S t u The following screen will be displayed Press the 2 key NO The following screen will be displayed Press the 2 key NO If you would like to run the insulation resistance test as well press the 1 key and then follow the instructions in section 3 3 4 steps c to f The following screen will be displayed Press the 2 key NO If you would like to run the burden test as well press the 1 key and then follow the instructions in section 3 3 3 steps c to e The following screen will be displayed Press the 1 key YES to save the record EZCT 2000B USER S MANUAL REV1 The following screen will be displayed momentarily v The following confirmation screen will then be displayed Press any key to return to the START UP menu REV1 EZCT 2000B USER S MANUAL EXCITATION TEST RESULTS COMPANY VANGUARD INSTRUMENTS STATION Les CIRCUIT a MER MODEL EZcCT2000B SAN comments NO COMMENT OPERATOR VN TESTED TAP xax NOTE DATA POINTS Cum lt A gt VTG lt onms gt i o ooic o Aai 360 0 o ooia 41 25 1 are 2 a s 2 5 95 6 1 22 esi o cosr 2 62 6 3 49 Teo gt maa
15. MER MODEL Fr COMMENTS RECORD NUMBER RECORD NUMBER RECORDO NUMBER RECORD NUMBER RECORD NUMBER RECORD NUMBER RECORD NUMBER gt EZCT 2000B USER S MANUAL REV1 TEST DI RECT ORY 97 x o TESTS L x CIR 1 ABB 2 T 22 O O SN 1 NO COMMENT 27 e ober 2570909 TESTS LABS ABB 2 22 lt lt SN NO COMMENT O6 o Oo lt a5 z 92 1 4 TESTS LAS cir VANGUARD T LOGO0oE SN 1 NO COMMENT 4 s TESTS L x VANGUARD g C T O S SN 2 NO COMMENT oe O Oo lt x s 28 TESTS L x CIR xx VANGUARD 2 O O Oo SN NO COMMENT O lt lt s 25 22 TESTS L x CIR 1 VANGUARD 2 T O O lt SN 1 NO COMMENT Ce O TESTS 5 MAN 2 SN 1 NO COMMENT aa Se 3 4 Figure 13 Typical Internal Test Record Directory Printout REV1 7 2000 USER S MANUAL 3 4 5 Printing a Directory of Test Records Stored in a USB Flash Drive You can print a directory of all the test records stored in a USB Flash drive using the steps below a Make sure the USB Flash drive is inserted in the EZCT 2000B s USB Flash drive port USB port Then start
16. Probable Cause The EZCT 2000B X cables are driving a short circuit The EZCT 2000B X cable is driving an opened circuit CT may not be completely de magnetized Ifthe user runs a dc resistance test the CT will be magnetized The next test the EZCT 2000B executes is an excitation test If the excitation current did not reach at least 0 8A the CT is not completely de magnetized The EZCT 2000B X cable may be opened Each X cable has two conductors going from the clip end to the banana jacks If one of the conductors is opened the V readings will be erratic Vu cables problem Transformer windings opposite side of CT windings is not shorted Suggested Solution e Check CT shorting screws Check X lead connections e Check the CT terminal connection e Raise the excitation voltage setting in the test plan e Re run the excitation test e You quickly verify if the CT was de magnetized by looking at the last excitation graph e Remove X cables from the EZCT 2000B and the CT terminals e Check cable integrity using an Ohm Meter e Check the cable connection Check the Vi cable integrity with an Ohmmeter e SeeFigure 7 REV1 EZCT 2000B USER S MANUAL 60 UPGRADING FIRMWARE The EZCT 2000B s firmware is user upgradeable You can download the latest firmware from the Vanguard Instruments Company web site at http www vanguard instruments com Use the steps below to download
17. Type the record number to be erased and press the ENTER key The following screen will be displayed Press any key to continue The following screen will be displayed You can continue to erase additional records or press the STOP key to exit to the START UP menu REV1 EZCT 2000B USER S MANUAL 2 ERASE ALL RECORDS Press the 2 key ERASE ALL RECORDS if you would like to erase all of the test records stored in the USB Flash drive The following confirmation screen will be displayed ERASE ALL THUMB DRIVE RECORDS ARE YOU SURE ENTER TO COHTINUE If you would like to cancel the erasure process press the STOP key No records will be erased and you will be returned to the START UP menu Press the ENTER key to continue with the erasure process The following screen will be displayed while the records are being erased ERASING ALL THUME DRIVE RECORDS PLEASE WAIT The following screen will be displayed after all of the test records have been erased ALL THUMB DRIVE RECORDS ERASED Press any key to return to the START UP menu EZCT 2000B USER S MANUAL REV1 3 5 Working With Test Plans A test plan is comprised of the saturation test voltage current range selection CT nameplate ratios and CT winding terminal combinations X1 to X5 for each test and also includes the insulation resistance test and CT load burden test definitions Up to 10 test defini
18. 2 LT 4 a Press the 1 key RUN TEST to start a test The following screen will be displayed 1 RES EXCIT amp RATIO 2 EXCITATION amp RATIO EXCITATION OMLY RATIO OHLY RESISTAHCE amp EXCIT TEST OHLY IHSULATIOM TST OHLY Select the test type by pressing the corresponding key 1 5 The following screen will be displayed ELECT TAF be 41 55 51 4 1 59 5 l 2 z 4 5 HEXT PAGE Select the tap connection by pressing the corresponding key 1 4 If the tap connection is not listed press the 5 key to view the next page of options If the selected test included an excitation test the following screen will be displayed SELECT VOLTAGE RANGE gy ag iza zaga 1 2 3 4 a Select a test voltage range by pressing the corresponding key 1 5 EZCT 2000B USER S MANUAL REV1 If the selected test included an excitation test the following screen will be displayed e Select the maximum test current for the excitation test by pressing the corresponding key 1 6 If the selected test included a ratio test the following screen will be displayed 1 YES Press the 1 key if you would like to enter the CT nameplate values The following screen will be displayed Type the first number using the keypad REV1 EZCT 2000B USER S MANUAL Press the ENTER key The following screen will be displayed
19. EEPROM It will be loaded into the working memory and you will be returned to the START UP menu EZCT 2000B USER S MANUAL REV1 3 5 9 Running a Test Using a Loaded Test Plan Once a test plan has been loaded into the working memory see section 3 5 6 for directions it can be used to run a test To run a test using a loaded test plan a Make sure a test plan has been loaded into the working memory and then start from the START UP menu 1 RUM TEST Bs 11 27 TEST PLANS DIAGHOSTICS CURRENT SOURCE Press the 1 key RUN TEST b The following screen will be displayed this screen will only be displayed if a test plan has been loaded first TEST PLAN LOADED 1 RUM WITH PROMPTS 2 RUM AUTOMOMOUSL y 5 UNLOAD TEST FLAH 1 RUN WITH PROMPTS Press the 1 key to run the test with prompts Continue to step c 2 RUN AUTONOMOUSLY Press the 2 key to run the test autonomously The following screen will be displayed CABLES WILL EHERDBIZET START TO Press the START key and the EZCT 2000B will start running the test per the test plan settings The screen will be updated with the test status REV1 7 2000 USER S MANUAL When the test has finished the following screen will be displayed Press the 1 key YES to save the record The following screen will be displayed momentarily Then the following confirmation screen will be displaye
20. Printer Pape ev 8 3 0 dXPERATING PROCEDURES ua sre aenieiai neei a iniinis 10 3 1 EZCI 2DOUB Cable Connections pesa 10 3 2 EZCT 2000B X Input Voltage Warning 15 3 3 Performing pO 16 3 3 1 Entering Test Record Header Information 16 3 3 2 Performing Resistance Excitation and Ratio 19 3 3 3 Performing a CT Burden Test uie titi coe p ao ug eure du 30 3 3 4 Performing an Insulation Resistance Test 35 3 35 Performing a Current Source Test 40 3 4 Working With Test Records 42 3 4 1 Restoring and Printing a Test Record From Flash 42 3 4 2 Restoring and Printing a Test Record From a USB Flash Drive 46 3 4 3 Printing a Restored Test Record 48 3 4 4 Printing a Directory of
21. Start from the START UP menu 1 2 ce 4 d RUM TEST SETUP 18 10 10 TEST PLAHS DIAGHOSTICS SOURCE Press the 3 key TEST PLANS b The following screen will be displayed BUD Re H hi e LOAD TEST FLAH TEST FLAH FLAH DIRECTORY TEST FLAH FRIHT TEST FLAH ERASE TEST FLAH CDF TO THUMB DRIVE Press the 1 key LOAD TEST PLAN c The following screen will be displayed LOAD TEST FLAH HUMBER The above screen will be displayed only if a USB Flash drive is NOT connected to the EZCT 2000B s USB Flash drive port If a USB Flash drive is connected the following screen will be displayed NOTE 1 INTERHAL STORAGE 2 DRIVE Press the 1 key INTERNAL STORAGE The following screen will be displayed REV1 7 2000 USER S MANUAL Type the test plan number that you would like to load and press the ENTER key If you do not know the test plan number you can print a test plan directory using the instructions in section 3 5 2 d The following screen will be displayed Press any key to return to the START UP menu EZCT 2000B USER S MANUAL REV1 3 5 8 Loading a Test Plan from a USB Flash Drive To load a test plan from a USB Flash drive a Make sure the USB Flash drive is inserted in the EZCT 2000B s USB Flash drive port USB MEM port Then start from the START UP menu RUM TEST B
22. TO PRIHT Press any key to return to the START UP menu Please see section 3 4 1 for instructions on how to restore a test record REV1 EZCT 2000B USER S MANUAL Press the 1 key to print the tabulated data and graphics results on the thermal printer The test record will be printed on the thermal printer and you will be returned to the START UP menu Press the 2 key to print the test report and graphic results on the thermal printer without the excitation voltage and current data points The test record will be printed on the thermal printer and you will be returned to the START UP menu EZCT 2000B USER S MANUAL REV1 3 4 4 Printing a Directory of Test Records Stored in the EZCT 2000B s Memory You can print a directory of all the test records stored in the EZCT 2000B s Flash EEPROM using the steps below a Start from the START UP menu RUM TEST 06717769 SETUP 18 14 25 TEST PLANS DIAGHOSTICS CURRENT SOURCE Press the 2 key SETUP b The following screen will be displayed RECORD IL FRIHT RECORD RECORD DIRECTOR SAVE RESTORE RECORD ERASE RECORD PAGE T CH Press the 3 key RECORD DIRECTORY c following screen will be displayed FRIHT DIRECTORY 1 FULL DIRECTORY 2 SHORT DIRECTORY The above screen will be displayed only if a USB Flash drive is NOT connected to the EZCT 2000B s USB Flash drive port If a USB Flash drive
23. The test plan will be printed on the thermal printer and you will be returned to the START UP menu A typical test plan printout is shown in Figure 17 Test plan elements are described in Table 4 REV1 EZCT 2000B USER S MANUAL TEST F L car NUMBER OF TESTS KNEE a 5 lt COMPANY VANGUARD INSTRUMENT STATION LAB CCIFCCULUT 2 MER ABS MODE tL E 2 T O O O COMMENT S NO COMMENT TEST NUMBER TYPE EXCI RAT gt Soov INS RES 1 AMP TESTED TAP gt lt 1 gt lt TEST YTG RANGE Soo x lt TEST CUR RANGE 22 A NAME PLATE RATIO Looo 9 TST NOTE 4 9 Figure 17 Typical Test Plan Printout Table 4 Description of Test Plan Elements Description 1 Number of tests in test plan 1 2 Tests to be performed Resistance excitation turns ratio insulation and CT load burden 3 Insulation test voltage 500 Vdc 4 Injection current for load burden test 1 A 5 Terminals used for excitation test X1 X2 6 Maximum excitation voltage 300 V 7 Maximum excitation current 2 0 A 8 CT nameplate ratio 1000 5 9 Test notes if any EZCT 2000B USER S MANUAL REV1 3 5 5 Erasing Test Plans From the Flash EEPROM To erase one or all test plans from the EZCT 2000B s Flash EEPROM a Start from the START UP menu a RUH TEST Bz 17 73
24. and install the latest EZCT 2000B firmware a Visit the Vanguard web site at http www vanguard instruments com and click on the Downloads button Company Product contact Sheets Software Versions Orges Product Demos b You will be taken to the Downloads page and presented with a Download Request Form REQUEST SOFTWARE MANUAL DOWNLOADS Please select the check boxes for the items you would like to download For each selected item please be sure to provide your products serial number Once we receive your download request you will receive an email with links for the requested files Fields in RED are required fields Thank you Name E Mail Company Phone Comments 19140 Enter the security code shown above in the field below Circuit Breaker Timers Product PC Firmware Software User s Spanish Product Serial Number Software Manual Manual Manual Demo CBPS 300 m cT 3500 O D Li creso O o Fill out all required fields marked with labels then click the Firmware checkbox to the right of the EZCT 2000B label Then fill out the serial number field on the right Click on the Submit button once all form fields have been filled out c following confirmation page will be displayed REQUEST SOFTWARE MANUAL DOWNLOADS We have received your download request a
25. oa was o o0o06o s es waa 5 212 lt gt as o o0ize waa o cass as x aces 7 Se as o Foro wae ze o0a 2126 7 war o c2e4 33 99 2 216 45 69 1304 6 26 eo x iaia c eo so asaa 21 o o0e7 1o 1638 4 22 o orses 124 69 1593 5 wes se 25 aaoo wea aam 1205 6 25 o 146 52 26 S ae x asae re 2 o 23e4 151 6 635 5 wee o 2721e 2 2 2 o 3624 155 091 s27 7 o se7rs ase 37 334 5 o asor 319 2 32 157 46 zeo0 9 se 215 7 eo as e z 1 1eo07 ae1 27 e 2 3521 161 81 aa 37 a v x e x 23 0 Fe eo a TABULATED GRAPH POINTS CUR lt A gt VTG cv lt onms gt o o0ozo 1 06 2 89 723 5 o o0oso 3 92 eoe o o1ioo 5 o ozoo za re ss 25 1381 2 75 97 1519 5 125 79 aooo 52 1375 2 2000 aao rae c gt 155 50 156 721 313 4 159 26 ass a 160 160 6 o0o0oo 164 10 ez WINDING RES 307 1 m OHMS rec 107 50 az o0 VOLTS IEC 107 50 c o0m 5o AMPS reee 30
26. required during testing This convenient arrangement allows for testing any of the 10 possible combinations of X1 to X5 Up to 10 saturation tests can be stored in one record Once the test is completed the test report and CT excitation curves can be printed on the built in thermal printer CT Ratio and Polarity Test The CT current ratio is determined using the ANSI IEEE C57 12 90 measurement method A test voltage is applied on any two terminals X1 to X5 of the CT and the induced voltage is measured through the H1 and H2 terminals of the CT The CT current ratio is displayed and also stored in memory The current ratio is measured from 0 8 to 5 000 The CT winding polarity is displayed as a sign in phase or a sign out of phase and is annotated with the phase angle in degrees The CT current ratio error and phase displacement is also calculated based on the CT burden or rated power and rated current CT Winding Resistance Test The EZCT 2000B can measure the DC resistance of the CT winding under test The DC winding resistance reading range is from 100 micro ohms to 10 Ohms Equivalent winding resistance values at different temperatures are also provided in the report CT Winding Insulation Resistance Test The EZCT 2000B can also measure the insulation resistance of the CT s secondary winding using a test voltage up to 1000 Vdc The DC winding resistance reading range is from 2 to 500 Mega ohms The insulation resistance t
27. to the START UP menu EZCT 2000B USER S MANUAL REV1 4 4 Printing Raw Memory Buffer Data You can print the raw data from the EZCT 2000B s memory buffer for diagnostic purposes This will print a table of current and voltage values stored in the unit s working memory To print the raw buffer data a Start from the START UP menu 1 RUM TEST 2 SETUP 18 14 25 5 TEST FLAWS 4 DIAGHOSTICS a CURREMT SOURCE Press the 2 key SETUP b The following screen will be displayed RECORD IL RECORD RECORD DIRECTORY SAVYE RES RECORD ERASE HEAT PAGE Press the 6 key NEXT PAGE c The following screen will be displayed 1 SET TIME 2 BURIED CT IH DELTA 5 POINT MARKER 4 PRINT RAW DATA Press the 4 key PRINT RAW DATA The raw buffer data will be printed and you will be returned to the START UP menu REV1 EZCT 2000B USER S MANUAL 5 0 DIAGNOSTICS VERIFICATION AND TROUBLESHOOTING 5 1 Performing a Diagnostics Test The Diagnostics test mode displays the output voltage at the selected X leads V the voltage sensed by the H leads Vi and the X voltage excitation current 1 These values can then be verified using an external volt meter and ampere meter To perform a diagnostic test a Start from the START UP menu 1 TEST 18 14 25 TEST DIAGHOSTICS CURRENT SOURCE Press the 4 key D
28. 50 C 15 F to 122 F Storage 30 C to 70 22 F to 158 F Five 20 foot X cable sets One 35 foot H cable set current source cables insulation test cables power cord ground cable A transportation case is included with the purchase price One year on parts and labor EZCT 2000B USER S MANUAL REV1 1 4 EZCT 2000B Controls and Indicators The EZCT 2000B s controls and indicators are shown in Figure 1 below A leader line with an index number points to each control and indicator which is cross referenced to a functional description in Table 2 The table describes the function of each item on the control panel The purpose of the controls and indicators may seem obvious but users should become familiar with them before using the EZCT 2000B 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 6 2 Vanguard Instruments Inc 4 Ontario Califor USA Figure 1 EZCT 2000B Controls and Indicators REV1 EZCT 2000B USER S MANUAL Table 2 Functional Descriptions of EZCT 2000B Controls and Indicators Item I Number Panel Markings INSULATION 1 RESISTANCE METER 2 6 X1 X2 X3 X4 X5 H GROUND 9 None 40 100 120Vac 12A 50 60Hz 11 None 12 None 13 HIGH VOLTAGE PRESENT EMERGENCY 14 TURN OFF PUSH 15 USB MEM 16 USB PC 17 RS 232C 18 None AC CURRENT 19 SOURCE 0 20A Functional De
29. CUIT rar re MODEL COMMENTS TEST PLAN NUMBER ccor1rmenrx STAT ION CIRCUIT MER MODEL COMMENTS NUMBER TESTS VANGUARD LAB 4 VANGUARD O O O NO COMMENT NUMBER TESTS VANGUARD L CIR VANGUARD E ZCTIOOOE NO COMMENT Figure 15 Typical EZCT 2000B Flash EEPROM Test Plan Directory Printout EZCT 2000B USER S MANUAL REV1 3 5 3 Printing a Directory of Test Plans Stored in a USB Flash Drive To print a directory of all the test plans stored in a USB Flash drive a Make sure the USB Flash drive is inserted in the EZCT 2000B s USB Flash drive port USB MEM port Then start from the START UP menu RUM TEST 1 SETUP 19 14 25 TEST PLANS DIAGHOSTICS CURRENT SOURCE Press the 3 key TEST PLANS b The following screen will be displayed LOAD TEST PLA UHLIA TEST FLAH FLAH DIRECTORY TEST FLAH FRIHT TEST FLAH ERASE TEST COPY TO THUME DRIVE Press the 3 key PLAN DIRECTORY c The following screen will be displayed 1 IHTERHAL DIRECTORY 2 THUMB DRIVE Press the 2 key THUMB DRIVE DIR d The following screen will be displayed while the test plan directory is being printed FRIHTIHMG DIRECTOR You will be returned to the START UP menu once printing is finished A typical USB Flash drive test plan directory
30. DE FROM FLASH DREW REV1 EZCT 2000B USER S MANUAL When the firmware upgrade has finished the following screen will be displayed You will hear a series of beeps as the unit re boots Once the unit has re booted the START UP menu will be displayed 105 EZCT 2000B USER S MANUAL REV1 REV1 EZCT 2000B USER S MANUAL 7 0 Appendix A Calculating Turns Ratio on a Shunt Reactor The Vanguard EZCT line of products use the voltage method to measure the turns ratio on current transformers A typical connection for a stand alone CT is shown in Figure 24 H1 X1 ee v X2 H2 Figure 24 The EZCT applies a test voltage V1 to the CT secondary winding The induced voltage V2 is sensed through the CT primary winding In this case a single conductor is used By definition the turns ratio is the voltage ratio V1 Ratio 107 EZCT 2000B USER S MANUAL REV1 Figure 25 shows a typical connection of a CT mounted on the primary bushing of a single phase transformer When the voltage V1 is introduced to the CT s secondary winding there is an induced voltage V3 on the primary winding of this single phase transformer Since the only access to the transformer is between terminals H1 H0 The V3 voltage will be included and the turns ratio will be Ratio 7 V3 H1 H2 2 Figure 25 Ideally we would like to eliminate the V3 voltage and only see the V2 voltage If the induced
31. EST 2 SETUP 18 14 25 5 TEST FLAHS 4 DIAGHOSTICS SOURCE Press the 5 key CURRENT SOURCE REV1 7 2000 USER S MANUAL The following screen will be displayed Press and hold the PAPER Contrast key to increase the current Press and hold the PAPER v Contrast key to decrease the current A timer will display the elapsed time that the current has been on le d Press the STOP key to turn off the current source and return to the START UP menu EZCT 2000B USER S MANUAL REV1 3 4 Working With Test Records 3 4 1 Restoring and Printing a Test Record From Flash EEPROM You can restore a test record from the EZCT 2000B s Flash EEPROM to the working memory You can then print the restored test record on the unit s built in thermal printer To restore a test record a Start from the START UP menu RUM TEST SETUP TEST PLANS DIAGHOSTICS SOURCE 1 2 3 4 d Press the 2 key SETUP b The following screen will be displayed RECORD ID FRIHT RECORD RECORD DIRECTOR SAVE RESTORE RECORD ERASE HEST PAGE dH Press the 4 key SAVE RESTORE RECORD following screen will be displayed RESTORE RECORD 1 ENTER RECORD HUMBER 2 SCRELE TB SELECT If you have a USB Flash drive inserted in the EZCT 2000B s USB MEM port the following screen will be displayed ins
32. HUMBER 1 ERRSET Press any key to return to the START UP menu 2 ERASE ALL PLANS Press the 2 key if you would like to erase all test plans The following screen will be displayed EZCT 2000B USER S MANUAL REV1 If you would like to cancel the erasure process press the STOP key No test plans will be erased and you will be returned to the START UP menu Press the ENTER key to continue with the erasure process The following screen will be displayed while the test plans are being erased The following screen will be displayed after all of the test plans have been erased Press any key return to the START UP menu REV1 EZCT 2000B USER S MANUAL 3 5 6 Erasing Test Plans From a USB Flash Drive To erase one or all test plans stored on a USB Flash drive a Make sure the USB Flash drive is inserted in the EZCT 2000B s USB Flash drive port USB MEM port Then start from the START UP menu a RUM TEST SETUP 15 13 TEST PLAHS DIAGHOSTICS CURRENT SOURCE Press the 3 key TEST PLANS b The following screen will be displayed LOAD TEST PLA UHLIA TEST FLAH FLAH DIRECTORY TEST FLAH FRIHT TEST FLAH ERASE TEST FLAH CORY TO THUME DRIVE BC T H Press the 6 key ERASE TEST PLAN c The following screen will be displayed 1 ERASE IHTERHAL PLA 2 ERASE THME DRY FLA Press the 2 key ERASE THMB DRV PLAN d The following s
33. IAGNOSTICS b The following screen will be displayed SELECT TAP 41 52 2 81 55 51 4 51 59 HEST PAGE Select the tap connection pressing the corresponding key 1 4 If the connection is not listed press the 5 key to view the next page of options and then select the correct tap connection following screen will be displayed SELECT VOLTAGE RANGE SEN 208 1286 2080 Select the maximum output voltage on the X terminals by pressing the corresponding key 11 EZCT 2000B USER S MANUAL REV1 d The following screen will be displayed CAUTIOHM CABLES HILL BE EHERGIZET ENTER TO COHTIHLIE Press the ENTER key to continue e The following screen will be displayed and the V Vr and values will be continuously updated for 15 seconds DIAGHOSTIC 2 2 B B again Tl STOP TO EXIT You can press the PAPER Contrast or PAPER v Contrast key to increase or decrease the V voltage respectively You can press the STOP key to end the test immediately and return to the START UP menu The test will automatically end after 15 seconds and you will be returned to the START UP menu REV1 EZCT 2000B USER S MANUAL 5 2 Verifying the EZCT 2000B s V Sense Circuit Using an External Meter The excitation voltage V sensed by the EZCT 2000B can be verified using an external RMS volt meter Follow the steps bel
34. IR VANGUARD 2 O O O SN 1 NO COMMENT Figure 14 Typical USB Flash Drive Record Directory Printout REV1 EZCT 2000B USER S MANUAL 3 4 6 Copying Test Records to a USB Flash Drive You can easily copy test records stored in the EZCT 2000B s Flash EEPROM to a connected USB Flash drive using the steps below a Make sure a USB Flash drive is inserted in the EZCT 2000B s Flash drive port USB MEM port Then start from the START UP menu 1 RUM TEST se 1UP 18 14 25 TEST PLAS DIAGHOSTICS CURRENT SOURCE Press the 2 key SETUP b The following screen will be displayed RECORD ID FRIHT RECORD RECORD DIRECTOR SAVE RESTORE RECORD ERASE FECORD HEST PAGE mcn dH Press the 4 key SAVE RESTORE RECORD c following screen will be displayed 1 RESTORE RECORD 2 COPY TO THUMB DRIVE Press the 2 key COPY TO THUMB DRIVE d The following screen will be displayed COPY REC TO THUMB 1 SIHGLE RECORD 2 COPY ALL RECORDS EZCT 2000B USER S MANUAL REV1 1 COPY SINGLE RECORD Press the 1 key COPY SINGLE RECORD if you would like to copy a single record from the EZCT 2000B to the USB Flash drive The following screen will be displayed Type the record number that you would like to copy to the USB Flash drive and then press the ENTER key The following screen will be displayed showing the status of the copy proces
35. R S MANUAL REV1 The following screen will be displayed Press the 1 key YES to keep the test results The following screen will be displayed Press the ENTER key to continue The following screen will be displayed Press the 2 key NO The following screen will be displayed Press the 1 key YES to save the record REV1 EZCT 2000B USER S MANUAL The following screen will be displayed momentarily l following confirmation screen will then be displayed Press the ENTER key and you will be returned to the START UP menu EXCITATION TEST RESULTS COMPANY VANGUARD INSTRUMENTS STATION LAB CIRCUIT a MAER ABB MODEL ECLCCYIOGOOoE s N zeooz COMMENTS NO COMMENT OPERATOR YN TST NOTE Soov INSULATION RES TEST VOLTAGE 495 5 M CURRENT 4 MICRO AMPS RESI STANCE c sso MEG OHMS Figure 12 EZCT 2000B Typical Insulation Resistance Test Results Report Printout EZCT 2000B USER S MANUAL REV1 3 3 5 Performing a Current Source Test The EZCT 2000B s programmable current source can be used to verify CT loads The EZCT 2000B can output up to a 20A current 0 15Vac To perform a current source test a Make connections per the figure below AC CURRENT SOURCE 0 20A C 7 20008 Current Transformer Tester LJ Vanguard Instruments Co Inc Ontario California USA b Start from the START UP menu 1 T
36. RMWARE 103 7 0 Appendix A Calculating Turns Ratio on a Shunt Reactor 107 LIST OF TABLES Table 1 EZCT 2000B Technical Specifications 5 Table 2 Functional Descriptions of EZCT 2000B Controls and 7 Table 3 Descriptions of Tabulated Test Results Elements 28 Table 4 Description of Test Plan 71 LIST OF FIGURES Figure 1 EZCT 2000B Controls and Indicators 6 Figure 2 Typical EZCT 2000B Excitation and Ratio Test Cable Connection 10 Figure 3 EZCT 2000B Insulation Resistance Test Cable Connection 11 Figure 4 EZCT 2000B CT Load Burden Test Cable Connection 12 Figure 5 EZCT 2000B Typical Current Source 00 1 13 Figure 6 Bushing CT Connection on Delta Transformer 14 Figure 7 Bushing CT Connection on Y Transformer
37. SISTANCE lt lt 1 lt MEG OHMS Figure 9 Typical EZCT 2000B Tabulated Report Printout 27 EZCT 2000B USER S MANUAL REV1 Table 3 Descriptions of Tabulated Test Results Elements Sun Description 1 Test record header information 2 The EZCT 2000B X terminals taps that were selected for this test 3 Test note for this particular test The test note can be up to 20 characters long 4 Recorded excitation current readings on the CT secondary winding 5 Recorded excitation test voltages applied to the CT secondary winding 6 Impedance calculated at each data point 7 The voltage current and impedance data points recorded on the graph grid marks 8 Measured DC resistance value of CT under test 9 IEC 10 50 knee point voltage and excitation current 60044 1 10 50 This knee point voltage is the same as the ANSI 10 50 knee point voltage 10 IEEE 30 knee point voltage and excitation current 11 IEEE 45 knee point voltage and excitation current 12 CT nameplate turns ratio 13 Measured turns ratio 14 Turns ratio percentage error 15 Polarity of the CT 16 Measured phase angle 17 Excitation voltage used in CT turns ratio test 18 Excitation current in turns ratio test 19 Current ratio error table This information will be printed only if you selected YES for the CALC ERR VS BURDEN option when running a test See section 3 3 2 step h for details 20 Current phase error table This information will
38. T 2000B can store up to 140 test records in Flash EEPROM Each test record may contain up to 10 saturation curves current ratio readings polarity and DC resistance readings insulation test results and load burden test results Test records can be recalled and printed by the built in thermal printer Test records can also be transferred to a PC using the RS 232C port USB port or via the USB Flash drive interface port Internal Test Plan Storage Capacity The EZCT 2000B can store up to 128 CT test plans in Flash EEPROM A test plan is comprised of the saturation test voltage current range selection CT nameplate ratios and CT winding terminal combinations X1 to X5 for each test and also includes the insulation and CT load burden test definitions Up to 10 test definitions can be stored per test plan The ability to store test plans makes CT testing an extremely simple process To perform a test the EZCT 2000B is connected to the CT terminals and a test plan is selected to run Creating test plans for the EZCT 2000B is also a simple process A test plan can be created using the EZCT 2000B s keypad or can be created on a PC with provided software and then downloaded to the EZCT 2000B via the RS 232C or USB ports For added convenience test plans can also be copied from a USB Flash drive to the EZCT 2000B via the USB Flash drive interface EZCT 2000B USER S MANUAL REV1 Computer Interface The EZCT 2000B can be used as a stand alone uni
39. TART UP menu If you would like to print the test record press the 1 key YES Continue to step g g Thefollowing screen will be displayed OPTIONS FULL DATA ABBREVIATED DATA Press the 1 key to print the full tabulated data and graphics results on the thermal printer After printing is finished you will be returned to the START UP menu Press the 2 key to print the test report and graphic results on the thermal printer without the excitation voltage and current data points After printing has finished you will be returned to the START UP menu EZCT 2000B USER S MANUAL REV1 3 4 3 Printing a Restored Test Record You can print a test record at the time that it is restored from the Flash EEPROM see section 3 4 1 or you can restore it to the working memory and print it later To print the current test record in the working memory a Start from the START UP menu RUM TEST a6 17 89 SETUP 18 14 25 TEST PLANS DIAGHOSTICS CURRENT SOURCE Press the 2 key SETUP b The following screen will be displayed RECORD IL FRIHT RECORD RECORD DIRECTOR SAVE RESTORE RECORD ERASE RECORD HEST PAGE mcn P Lal bo Press the 2 key PRINT RECORD c following screen will be displayed FRIHT OPTIONS 1 FULL DATA 2 ABBREVIATED DATA If there is no test record in the working memory the following screen will be displayed NOTE SHOTS
40. TM EZCT 2000B DIGITAL CURRENT TRANSFORMER TESTER USER S MANUAL A Vanguard Instruments Company Inc y 1520S Hellman Ave Ontario California 91761 USA TEL 909 923 9390 June 2014 FAX 909 923 9391 Revision 1 9 EZCT 2000B USER S MANUAL REV1 SAFETY SUMMARY 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 EZCT 2000B or cause errors in the test results Vanguard Instruments Company Inc assumes no liability for unsafe or improper use of the EZCT 2000B All 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 WARNINGS AND CAUTIONS The EZCT 2000B can produce a voltage up to 2 000 Vac that can cause severe injury and or equipment damage Due to this reason the EZCT 2000B shall be used only by trained operators The EZCT 2000B s X output terminals are rated to 2 000 Vac working voltage Any voltage above 2 000 Vac will damage the input circuitry Please see section 3 2 for further information All devices under test shall be off line and fully isolated Never attempt to test any current transformer still connected to a circuit All current transformer terminals shall be isolated before conducting any test with the EZCT 2000B Always ground the EZCT 2000B to a
41. Test Records Stored in the EZCT 2000B s Memory 50 3 4 5 Printing a Directory of Test Records Stored a USB Flash Drive 53 3 4 6 Copying Test Records to a USB Flash Drive 55 3 4 7 Erasing Test Records From the Flash EEPROM 58 3 4 8 Erasing Test Records From a USB Flash Drive 61 3 5 Working With Test Plaines enc aec breue npo ie oben karen rania aa qa sasaqa ETEN TAE 64 3 5 1 Extracting the Test Plan From a Test Record 64 3 5 2 Printing a Directory of Test Plans Stored in the EZCT 2000B s Memory 66 3 5 3 Printing a Directory of Test Plans Stored in a USB Flash Drive 68 3 5 Printing a 70 3 5 5 Erasing Test Plans From the Flash EEPROM 72 3 5 6 Erasing Test Plans From a USB Flash Drive 75 3 5 7 Loading a Test Plan from the EZCT 2000B s Flash EEPROM 78 3 5 8 Loading a Test Plan from a USB Flash Drive 80 3 5 9 Running a Test Using a Loaded Test Plan
42. V3 voltage on the transformer winding cannot be eliminated the turns ratio measured will be wrong REV1 EZCT 2000B USER S MANUAL Since this is a single phase transformer and the transformer secondary winding is accessible the user can apply a jumper to short out the transformer secondary winding as shown in Figure 26 By shorting out the transformer secondary winding the user can eliminate most of the V3 voltage V3 0V Now the turns ratio will be V1 Ratio H1 v2 gt V1 X1 Install Jumper _ H2 X2 Figure 26 109 EZCT 2000B USER S MANUAL REV1 Figure 27 shows a CT mounted on an auto transformer This configuration is very similar to the CT mounted on a single phase transformer the main difference being that the secondary winding is part of the primary winding The turns ratio in this case will be n vi V4 V24V3 Ratio V2 5 V1 X1 Jumper H0 X0 Figure 27 By shorting out the transformer s secondary winding X1 to H0 X0 we can eliminate the voltage induced from X1 to H0 X0 The voltage V3 cannot be eliminated and will create an error in the CT turns ratio measurement The amount of error depends on the amount of turns of the secondary windings The alternative method to verify the CT turns ratio is shown in Figure 29 and Figure 30 REV1 7 2000 USER S MANUAL Figure 28 show a CT mounted on a typical shunt reactor This configuration is very simi
43. a USA Figure 22 EZCT 2000B I Verification Test Connections REV1 EZCT 2000B USER S MANUAL 5 4 Quickly Verifying the EZCT 2000B s Turns Ratio Circuit You can quickly verify the EZCT 2000B s turns ratio circuit by performing the following ratio test a Connect the X1 test lead to the H1 test lead as shown in Figure 23 b Connect the X2 test lead to the H2 test lead as shown in Figure 23 c Run a turns ratio test see section 3 3 2 d Observe the turns ratio test on the LCD screen The turns ratio should be 1 000 since the excitation voltage is the same as the sensed voltage AC CURRENT SOURCE 0 20A C 7 20008 Current Transformer Tester 62 Vanguard Instruments Inc Ontario California USA Figure 23 EZCT 2000B Turns Ratio Verification Test Connections 101 EZCT 2000B USER S MANUAL REV1 5 5 PROBLEM DESCRIPTION When running the excitation test the V voltage is always zero The excitation current can be raised during a test When running the excitation test the V voltage can be raised but the excitation current is always zero during a test CT excitation knee point voltages and turns ratio readings are incorrect When running the excitation test the V reading is erratic Saturation test is correct but turns ratio test is erroneous Turns ratio test of a CT mounted on a transformer bushing is incorrect Troubleshooting Guide
44. alue using the keypad and then press the ENTER key The following screen will be displayed Type the Cos value using the keypad and then press the ENTER key k The following screen will be displayed Select the rated secondary current by pressing the 1 key 5A or 2 key 1A The following screen will be displayed showing a summary of the test parameters Press the START key to start the test REV1 EZCT 2000B USER S MANUAL m If the selected test included a resistance test the following screen will be displayed momentarily The following screen will then be displayed n Ifthe selected test included a ratio test the following screen will be displayed momentarily The following screen will then be displayed EZCT 2000B USER S MANUAL REV1 When the testing is finished the test results graph will be displayed Press any key on the keypad to continue o The following screen will be displayed Pressthe 1 key YES if you would like to print the test results The test results will be printed on the thermal printer A typical EZCT 2000B tabulated test report printout is shown in Figure 9 A typical graphic report is shown in Figure 10 Press the 2 key NO if you do not want to print the test results p The following screen will be displayed Pressthe 1 key YES to keep the test results q The following screen will be displayed Press any key to continue
45. be printed only if you selected YES for the CALC ERR VS BURDEN option when running a test See section 3 3 2 step h for details 21 Burden test results This information will be printed only if you chose to run the burden test Please see section 3 3 2 step p for details 22 Insulation resistance test results This information will be printed only if you chose to run the insulation resistance test Please see section 3 3 2 step o for details REV1 EZCT 2000B USER S MANUAL 100 V He EU YIL EL 1 gt CT EXCITATION PLOT Tec 1075090 KNEE MARKER MLA MA 014 101 10A Figure 10 Typical EZCT 2000B Graphic Report with Multiple Plot Curves EZCT 2000B USER S MANUAL REV1 3 3 3 Performing a CT Burden Test The CT burden test verifies the actual CT burden before putting the CT in service The CT s secondary burden is measured by injecting a 1A or 5A test current into the load To perform a CT burden test a Make connections per the figure below AC CURRENT SOURCE 0 20A Vanguard Instruments Co Inc Ontario California USA b Start from the START UP menu 1 EUH TEST 2 SETUP Z 3 TEST PLAHS 4 DIAGHOSTICS 5 CLUEREHT SOURCE REV1 EZCT 2000B USER S MANUAL C d e Press the 1 key RUN TEST The following screen will b
46. creen will be displayed ERASE TEST FLAN 1 ERASE SIHGLE FLAH 2 ERASE ALL PLANS 1 ERASE SINGLE PLAN EZCT 2000B USER S MANUAL REV1 Press the 1 key ERASE SINGLE PLAN if you would like to erase a single plan from the USB Flash drive The following screen will be displayed Type the test plan number that you would like to erase and press the ENTER key The selected test plan will be erased and the following screen will be displayed Press any key to return to the START UP menu 2 ERASE ALL PLANS Press the 2 key ERASE ALL PLANS if you would like to erase all the test plans on the USB Flash drive The following screen will be displayed If you would like to cancel the erasure process press the STOP key No test plans will be erased and you will be returned to the START UP menu Press the ENTER key to continue with the erasure process The following screen will be displayed while the test plans are being erased 200 1 REV1 2 2000 USER S MANUAL The following screen will be displayed after all of the test plans have been erased from the USB Flash drive Press any key to return to the START UP menu EZCT 2000B USER S MANUAL REV1 3 5 7 Loading a Test Plan from the EZCT 2000B s Flash EEPROM To use a test plan for running a test it must first be loaded into the working memory To load a test plan from the EZCT 2000B s Flash EEPROM into the working memory a
47. d Press any key to return to the START UP menu 3 UNLOAD TEST PLAN Press the 3 key to unload the test plan and run a test without a test plan This will unload the test plan from the working memory and bring up the standard RUN TEST menu Please see section 3 3 2 step b EZCT 2000B USER S MANUAL REV1 c The following screen will be displayed ENTER TEST 1 14 TO POSITIOH ENTER ACCEPT Use the alpha numeric keys on the keypad to enter a test note and press the ENTER key d The following confirmation screen will be displayed showing the test parameters TEST 1 PARAMETERS BI ZR START TO Press the START key to begin the test e The EZCT 2000B will start performing the test per the test plan parameters When the test has finished the following screen will be displayed AHY KEY TO COHTIHLE Mya 3174 I 8 8324 199 35 Press any key to continue f The following screen will be displayed TEST RESULTS I TES 2 Press the 1 key YES if you would like to print the test results Press the 2 key NO if you do not want to print the test results REV1 EZCT 2000B USER S MANUAL g following screen will be displayed Press the 1 key YES to keep the test results h The following screen will be displayed Press any key to continue i The following scre
48. e displayed RES ERCIT amp RATIO EXCITATION amp RATIO EXCITATION OHLY RATIO OHLY RESISTAHCE EXCIT TEST OHLY IHSULATION TST OHLY 1 2 5 4 e T Press the 6 key BURDEN TEST ONLY The following screen will be displayed EHTER TEST 1 HOTE 14 TO POSITIOMH ENTER TO ACCEPT Use the alpha numeric keypad to enter a test note and then press the ENTER key The following screen will be displayed BUFTEH TEST 1 1A 2 uH Select the burden test current by pressing either the 1 key 1 the 2 key 5A The following screen will be displayed TEST 1 PARAMETERS 1 AMP TEST x1 52 CABLES TO BURDEH HOW START TO Press the START key to begin the test EZCT 2000B USER S MANUAL REV1 g following screen will be displayed The following screen will be displayed momentarily Then the following screen will be displayed When the test is completed the test results will be displayed temporarily REV1 EZCT 2000B USER S MANUAL Then the following screen will be displayed Print the 1 key YES if you would like to print the test results The test results will be printed on the thermal printer A typical burden test results report is shown in Figure 11 Press the 2 key NO if you do not want to print the test results h The following screen will be displa
49. e process press the STOP key No records will be erased and you will be returned to the START UP menu Press the ENTER key to continue with the erasure process The following screen will be displayed while the records are being erased ERASING RECORDS PLEASE WAIT The following screen will be displayed after all of the test records have been erased RECORDS ERASED Press any key to return to the START UP menu REV1 7 2000 USER S MANUAL 3 4 8 Erasing Test Records From a USB Flash Drive You can erase individual or all test records stored in a USB Flash drive To erase a test record a Make sure the USB Flash drive is inserted in the EZCT 2000B s USB Flash drive port USB MEM port Then start from the START UP menu RUM TEST 66717709 SETUP 18 14 25 TEST PLANS DIAGHOSTICS SOURCE Press the 2 key SETUP b The following screen will be displayed RECORD ID FRINT RECORD RECORD DIRECTORY SAVYE RESTORE RECORD ERASE PAGE Press the 5 key ERASE RECORD c The following screen will be displayed 1 ERASE REC 2 ERASE THUMB DRY REC Press the 2 key ERASE THUMB DRV REC EZCT 2000B USER S MANUAL REV1 d The following screen will be displayed 1 ERASE SINGLE REC Press the 1 key ERASE SINGLE REC if you would like to erase a single record The following screen will be displayed
50. en will be displayed Press the 1 key YES to save the record The following screen will be displayed momentarily EZCT 2000B USER S MANUAL REV1 The following confirmation screen will then be displayed Press any key to return to the START UP menu REV1 EZCT 2000B USER S MANUAL 3 5 10 Unloading a Test Plan from the Working Memory To unload the test plan from the working memory and clear all the test plan parameters a Start from the START UP menu RUH TEST Be 1T a9 18 14 25 TEST FLAHS DIAGHOSTICS CURRENT SOURCE Press the 3 key TEST PLANS b The following screen will be displayed J Ov OB H LOAD TEST FLAH TEST FLAH FLAH DIRECTORY EXTRACT TEST FLAH FRIHT TEST FLAH ERASE TEST FLAH CORY TO THUMB DRIVE Press the 2 key UNLOAD TEST PLAN c The following screen will be displayed TEST LUHL O RTDET Press any key to return to the START UP menu EZCT 2000B USER S MANUAL REV1 40 CHANGING SETUP PARAMETERS 41 Setting the Knee Point Marker Use the steps below to change the knee point marker for the excitation graph a Start from the START UP menu a RUM TEST Be1T 9 SETUP Bat les 58 TEST DIAGHOSTICS CURRENT SOURCE Press the 2 key SETUP b The following screen will be displayed RECORD II FRIHT RECORD RECORD DIRECTORY SAVYE RESTORE RECORD ERASE
51. en will be displayed 1 RECORD IL 2 PRIMT RECORD RECORD DIRECTORY SAVYE RESTORE RECORD ERASE HEST PAGE Press the 1 key RECORD ID c The following screen will be displayed COMPANY VAHGUART 14 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 REV1 EZCT 2000B USER S MANUAL d The following screen will be displayed STRTIOH LAB TL TO POSITION TO ACCEPT Type the station name using the alpha numeric keypad and then press the ENTER key e The following screen will be displayed CIRCUIT CIRCUIT 1 Ti TO POSITIOH EHTER TO ACCEPT Type the circuit information using the alpha numeric keypad and then press the ENTER key f The following screen will be displayed MANUFACTURER Ti TO POSITIOH EHTER TO ACCEPT Type the manufacturer name usin
52. est results are displayed and printed on the report 22 jiww i REV1 EZCT 2000B USER S MANUAL CT Burden Test The EZCT 2000B can measure the CT s secondary burden by injecting a 1A or 5A test current into the load The CT burden measurements Voltage current Cos and burden impedance are displayed on the screen and printed on the test report This important test verifies the actual CT burden before putting the CT in service thus avoiding any potential configuration conflicts Current Source EZCT 2000B s programmable current source 0 20 0 15Vac be used to verify CT loads The on time timer and output current are displayed on the LCD screen Test Record Header Information Test record header information including the company substation name circuit ID manufacturer mode CT serial number and the operator s name can be stored with each record In addition to the test record header a 20 character test description for each test in the record 10 tests per record can also be entered User Interface and Display The EZCT 2000B features a back lit LCD screen 128 x 64 dot graphic that is clearly viewable in both bright sunlight and low light levels An alpha numeric keypad is used to enter test information and to control the unit s functions Built in Thermal Printer A 4 5 inch wide built in thermal printer can print the CT test results and saturation curves Internal Test Record Storage Capacity The EZC
53. from the START UP menu 1 RUM TEST 18 14 25 TEST PLANS DIAGHOSTICS CURRENT SOURCE Press the 2 key SETUP b The following screen will be displayed RECORD IL RECORD RECORD DIRECTORY SAVYE RESTORE RECORD ERASE FECORD HEST PAGE Press the 3 key RECORD DIRECTORY c The following screen will be displayed 1 IHTERHAL DIRECTORY 2 THUME DRIVE DIF Press the 2 key THUMB DRIVE DIR d The following screen will be displayed while the directory is printed FRIHTIHG DIRECTOR When printing is finished you will be returned to the START UP menu A sample directory printout is shown in Figure 14 EZCT 2000B USER S MANUAL REV1 T FAL Jr1E prt DIR THUMB orv DAT Er T X ME NUMBER OF STATION CIRCUIT MER MODEL s S N COMMENTS THUMB DRY E r T oF STATION CIRCUIT MFR MODEL SAN COMMENTS THUMBS DRY DAT T IME NUMBER OF STATION rar re MODEL SMAN COMMENT S coe x s c gt x FILENAME 1 0 lt LAB CIR ABB T O O OE SN 1 No COMMENT rer cot L3 290 F 1 lt lt lt Tests LAS ABS g T O O O SN c NO COMMENT OOZ 59 FILENAME i9 TESTS L x C
54. g the alpha numeric keypad and then press the ENTER key g The following screen will be displayed MODEL EZCTZ2aBDBB Ti TO POSITIONH EHTER TO Type the model information using the alpha numeric keypad and then press the ENTER key EZCT 2000B USER S MANUAL REV1 h The following screen will be displayed SERIAL HUMBER 260 2 TL TO POSITION TO ACCEPT Type the serial number using the alpha numeric keypad and then press the ENTER key i The following screen will be displayed COMMENTS COMMENT Ti TO POSITIOH EHTER ACCEPT Enter any relevant comments using the alpha numeric keypad and then press the ENTER key j following screen will be displayed OFERATOR VH TO POSITIONH TO ACCEPT 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 REV1 EZCT 2000B USER S MANUAL 3 3 2 Performing Resistance Excitation and Ratio Tests The following procedure describes the general steps for performing excitation resistance and ratio tests a b C When the EZCT 2000B is turned on it will first go through a start up cycle and load the firmware Then the START UP menu will be displayed as shown below 1 RUM TEST SETUF 11 18 25 TEST PLAHS DIAGHOSTICS CLURREHT SOURCE
55. is connected the following screen will be displayed NOTE 1 IHTERHAL DIRECTORY 2 THUME DRIVE Press the 1 key INTERNAL DIRECTORY The following screen will be displayed REV1 EZCT 2000B USER S MANUAL Press the 1 key to print a full directory listing of all the test records stored in the EZCT 2000B s Flash EEPROM The directory listing will be printed on the thermal printer and you will be returned to the START UP menu A sample directory listing printout is shown in Figure 13 Press the 2 key to print a short directory listing of the stored test records The short directory option prints the last 10 records stored in the EZCT 2000B s Flash EEPROM The short directory listing will be printed on the thermal printer and you will be returned to the START UP menu DATE TIME NUMBER OF STATION CIRCUIT mer MODEL en COMMENTS DATE TIME NUMBER OF STATION CIRCUIT MER MODEL 27 COMMENTS X NUMBER OF STAT ION CIRCUIT MER MODEL SAN COMMENT DATE T X gt NUMBER OF STAT CIRCUIT rar re MODEL COMMENTS DATE TIME NUMBER OF STATION CIRCUIT MER gt MODEL r COMMENTS DATE TIME NUMBER OF STATION CIRCUIT S MER MODEL r COMMENTS DATE TIME NUMBER OF STATION CIRCUIT
56. lar to the CT mounted on a single phase transformer the main difference being the lack of the secondary winding The turns ratio in this case will be V1 Ratio v3 Figure 28 Since there is no secondary winding on the shunt reactor the V3 voltage cannot be eliminated from the connection The turns ratio measurement from using this method will always have some built in error The amount of error depends on the size of the reactor winding and the number of turns on the CT s secondary winding The alternative method to verify the CT turns ratio is shown in Figure 29 and Figure 30 111 EZCT 2000B USER S MANUAL REV1 Figure 29 show a CT with 5 taps The turns ratio of the CT can be measured by treating the CT secondary winding as an auto transformer When using this method the effect of the shunt reactor winding is totally eliminated The turns ratio X1 X5 X2 X5 measured by the EZCT or any electronic TTR will be as follows Ratio v2 H1 X1 X2 X3 2 V2 4 5 H2 Figure 29 From the name plate of the CT show in table below the turns ration can be calculated as follows Ratio Terminal 1200 5A X1 X5 1000 5A X2 X5 Ratio X1 X5 240 Ratio QS _ 24 120 Ratio X2 X5 200 Calculated Ratio REV1 EZCT 2000B USER S MANUAL A common practice for verifying the CT turns ratio in the field is to apply an AC voltage to the CT secondary full winding X1 X5 A vo
57. late For the above example CT the turns ratio between X1 X4 is 3150 to 1 The turns ratio between X1 X2 is 400 to 1 The turns ratio between X1 X4 and X1 X2 is 7 88 3150 400 If a test voltage of 300 Vac is applied to the X1 X2 terminals a voltage of 2 364 Vac 300 Vac x 7 88 will be induced at the X1 X4 terminals If all the test leads are connected to the EZCT 2000B and the excitation test is performed on the X1 X2 terminals the voltage induced at the X1 X4 terminals will exceed 2 000 Vac as the voltage across the X1 X2 terminals increases above 250 Vac A Flash Over condition may occur and damage the EZCT 2000B In this case the user should only connect the X1 X2 leads and run its excitation test then connect the X4 lead before running the X1 X4 excitation test EZCT 2000B USER S MANUAL REV1 333 Performing Tests 3 3 1 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 When the unit is turned on and the firmware has been loaded you will be presented with the START UP menu as shown below RUM TEST g6 17 89 SETUP 19 14 25 TEST PLANS DIAGHOSTICS CURRENT SOURCE Press the 2 key SETUP b The following scre
58. lt meter can be used to verify the voltage drop across the CT terminals For example if a 120Vac voltage is applied to the X1 X5 of this CT the voltage reading across X2 X5 shall be expected as follows 1 5 _ 1200 1 2 V X2 X5 1000 120v 12 V X2 X5 V x2 x5 100V H1 X1 X2 X3 V1 120V V2 100V X4 X5 H2 Figure 30 This method also eliminates the effect of the auto transformer or reactor windings 113 EZCT 2000B USER S MANUAL REV1 ALSTOM SHUNT REACTOR SERIAL NUMBER INSTRUCTION BOOK 111583 510 N or PHASE 3 STANDARD ANS COOLING TYPE FREQUENCY 60 Hz INSULATING LIQUID NAPHTHENIC ASTM D 3487 88 MINERAL OIL CONTAINS NO PCB YEAR IMPEDANCE PER PHASE AT 60Hz AND 75 C 23732 CORF TYPE DESIGN SOUND LEVEL SOMVAr dB WINDING CONDUCTOR COPPER RATED VOLTAGE kV PHASORIAL DIAGRAM TEMPERATURES CORE AND COILS MASS 70768 Jib 32100 kg 345 H2 MAXIMUM AMBIENT TEMPERATURE 40 uraan Amen TEMPERATURE 30 MASS 48921 ip 22190 kg WINDING AVERAGE RISE RATED POWER MVAr nor ssor mat OIL VOLUME 6586 gor 29930 TANK AND FITTINGS MASS 41006 Jib 718600 kg SHUNT REACTOR TERMINALS UNE HT M2 M3 WO RATED VOLTAGE V RATED CURRENT A L 300 INSULATION LEVELS NEUTRAL wm sam an wed SHIPPING WITHOUT OIL MASS 100751 Jio 45700 kg
59. n as e Warning messages are indicated as e Important notes are indicated as EZCT 2000B USER S MANUAL REV1 1 0 INTRODUCTION 1 1 General Description and Features The EZCT 2000B is Vanguard s third generation microprocessor based current transformer test set Designed specifically for CT testing the EZCT 2000B has the following outstanding features that can greatly increase productivity and save time during the commissioning stage e Performs CT excitation current ratio polarity and phase angle tests e Measures insulation resistance and winding resistance of the CT secondary windings e Measures the CT s secondary burden The EZCT 2000B s test leads can be connected to all the CT output terminals and the complete CT test can be performed automatically without any operator intervention Saturation Test The CT saturation test is performed in compliance with the ANSI IEEE C57 13 1 and IEC 60044 standards Test voltage ranges from 50 300 500 1200 and 2000 Vac can be selected for the saturation test The test voltage is raised and lowered automatically by the EZCT 2000B The saturation test voltage and current data is collected and stored in the EZCT 2000B s internal memory Knee point voltages ANSI 10 50 IEC 10 50 IEEE 30 IEEE 45 are calculated and printed on the test report All of the EZCT 2000B s test leads can be connected to the CT output terminals X1 X2 X3 X4 and X5 and there is no lead switching
60. nd an email will be sent to you with the download links within the next 24 hours Thank you 103 EZCT 2000B USER S MANUAL REV1 d You will also receive an email confirming the receipt of your download request Once your request has been received you will receive a second email usually within 1 2 business hours containing a download link for the firmware file Click on this link and download the firmware file to your computer The downloaded file will be in ZIP compressed format Unzip this file to an empty directory you can use a utility like Winzip 7Zip Winrar Once un compressed you should see a file named EZCT2B M hex Copy this file to the root of a USB Flash drive Make sure the EZCT 2000B s power if OFF and then insert the USB Flash drive containing the firmware file in the EZCT 2000B s Flash drive interface port USB MEM port While holding down the STOP key turn on the EZCT 2000B Continue to hold down the STOP key while the EZCT 2000B powers up After the initial logo screen the following screen will be displayed START HANDSHAKE IHSERT DRY Continue to hold down the STOP key The firmware upgrade process will start and the following screen will be displayed ERASING EXT 4 LOADING CODE FROM FLASH DRY You can release the STOP key at this point The EZCT 2000B will continue the upgrade process and display the following screen ERASING BLOCK 4 LOADING CO
61. nformation will be displayed as shown H1 Beds 18 11 3 TESTS CIR 1 2 SH 1 When you have located the test record that you would like to restore press the ENTER key The following screen will be displayed RECORD RESTORED PRIHT RECORD 1 YES 2 HO If you do not want to print the test record press the 2 key NO The test record will be restored to the working memory and you will be returned to the START UP menu If you would like to print the test record press the 1 key YES Continue to step d REV1 EZCT 2000B USER S MANUAL d The following screen will be displayed Press the 1 key to print the tabulated data and graphics results on the thermal printer The test record will be restored to the working memory and will be printed on the thermal printer and then you will be returned to the START UP menu Press the 2 key to print the test report and graphic results on the thermal printer without the excitation voltage and current data points The test record will be restored to the working memory and will be printed on the thermal printer and then you will be returned to the START UP menu EZCT 2000B USER S MANUAL REV1 3 4 2 Restoring and Printing a Test Record From a USB Flash Drive You can restore a test record from a USB Flash drive to the EZCT 2000B s working memory using the steps below a Make sure the USB Flash drive containing the test reco
62. nnection EZCT 2000B USER S MANUAL REV1 CT LOAD BURDEN o o Current Transformer Tester o o 110 120V2c 12A 50 60Hz Vanguard Instruments Inc Ontario California USA Figure 4 EZCT 2000B CT Load Burden Test Cable Connection REV1 EZCT 2000B USER S MANUAL Figure 5 EZCT 2000B Typical Current Source Connection EZCT 2000B USER S MANUAL REV1 NOTE JUMPER INSTALLATION ON SECONDARY WINDING H1 JUMPER EZCT CABLES TYP 3 PLACES amp X2 x 1 EZCT B PHASE BUSHING CT 1 A PHASE C PHASE BUSHING CT BUSHING CT a ge H1 H2 EZCT EZCT X1 amp X2 X1 amp X2 EZCT EZCT 041122ATRTO1 Figure 6 Bushing CT Connection on Delta Transformer S EN CHE m TYP 3 PLACES TYP 3 PLACES H1 EZCT X1 amp X2 NOTES EZCT 1 JUMPER INSTALLATION ON PRIMARY WINDING X1 amp X2 EZCT BUSHING CT H2 EZCT X1 amp X2 EZCT C PHASE BUSHING CT 52 041122ATRTO2 Figure 7 Bushing Connection on Y Transformer REV1 EZCT 2000B USER S MANUAL 3 2 EZCT 2000B X Input Voltage Warning The EZCT 2000B X output terminals are rated to 2 000 Vac working voltage Any voltage present at these terminals above 2 000 Vac may damage the X sense circuitry cause false readings or both An example of a typical situation where this may occur is shown in Figure 8 below Figure 8 Sample CT Name P
63. ow to verify the EZCT 2000B s V sense circuit a b C Connect the X cables to an RMS volt meter as shown in Figure 21 Select the EZCT 2000B s Diagnostics mode see section 5 1 Press the PAPER Contrast key to raise the V voltage Verify the V voltage displayed on the EZCT 2000B LCD screen against the value displayed on the external volt meter Press the STOP key to end the test x2 VOLT METER CURRENT SOURCE EZL 7 20008 Current Transformer Tester EMERGENCY TURN OFF PUSH Vanguard Instruments Co Inc Ontario California USA Figure 21 EZCT 2000B V Verification Test Connections EZCT 2000B USER S MANUAL REV1 5 3 Verifying the EZCT 2000B s I Sense Circuit Using an External Meter You can verify the excitation current lx sensed by the EZCT 2000B by using an external RMS ampere meter Follow the steps below to verify the EZCT 2000B s sense circuit a Connectthe X cables to a power resistor and an RMS ampere meter as shown in Figure 22 b Select the EZCT 2000B s Diagnostics mode see section 5 1 c Press the PAPER Contrast key to raise the V voltage d Verify the voltage displayed on the EZCT 2000B s LCD screen against the value displayed on the external RMS ampere meter e Press the STOP key to end the test POWER RESISTOR EZL 7 20008 Current Transformer Tester Vanguard Instruments Co Inc Ontario Californi
64. printout is shown in Figure 16 REV1 EZCT 2000B USER S MANUAL T DIR THUMBS DRY NUMBER OF COMPANY STAT ION CIRCUIT CIRCUIT MODEL COMMENTS THUMBS DRY NUMBER OF COMPANY STAT ION CIRCUIT CIRCUIT MODEL COMMENTS THUMBS DRY NUMBER OF ccor1renmcx STAT ION CIRCUIT CIRCUIT MODEL COMMENT S FILENAME FLAN lt lt lt TESTS VANGUARD LAB CIR 2 OO S FILENAME F L exn ooo Tests VANGUARD LAB CIR i gt O OO FILENAME F L exn ooo TESTS VANGUARD LABS CIR 1 T O Figure 16 Typical USB Flash Drive Test Plan Directory Printout EZCT 2000B USER S MANUAL REV1 3 5 4 Printing a Test Plan To print a test plan a Start from the START UP menu 1 TEST THE 18 14 25 TEST FLAHS DIAGHOSTICS CURRENT SOURCE Press the 3 key TEST PLANS b The following screen will be displayed LOAD TEST FLAH TEST FLAH FLAH DIRECTORY EXTRACT TEST FLAH FRIHT TEST FLAH ERASE TEST COPY TO THUME DRIVE RH Ra e Press the 5 key PRINT TEST PLAN c The following screen will be displayed FRIHT TEST FLAW HUMBER Type the test plan number that you would like to print and press the ENTER key If you do not know the test plan number you can first print the test plan directory using the instructions in section 3 5 2
65. r Interface Ports The EZCT 2000B features one USB and one RS 232C PC interface port A Windows based Current Transformer Analysis software application is supplied with the EZCT 2000B For further information please see the software user s manual EZCT 2000B USER S MANUAL REV1 3 0 OPERATING PROCEDURES 3 1 EZCT 2000B Cable Connections Always connect the EZCT 2000B to the substation ground before connecting any test cables The EZCT 2000B is supplied with five 20 foot X test cables and one 35 foot H cable The X cable connections are required to run the current transformer excitation test The H and X cable connections are required to run the transformer turns ratio test A typical excitation and ratio test connection is shown in Figure 2 The insulation resistance test connection is shown in Figure 3 The burden test connection is shown in Figure 4 The current source test connection is shown in Figure 5 Transformer bushing CT connections for Delta and Y transformers are shown in Figure 6 and Figure 7 respectively optional ground AC CURRENT SOURCE 0 20A e EMERGENCY California U Figure 2 Typical EZCT 2000B Excitation and Ratio Test Cable Connection 2 2 REV1 7 2000 USER S MANUAL X1 X2 X3 X4 X5 GND AC CURRENT SOURCE 0 20A LJ TURN OFF PUSH Vanguard Instruments Co Inc Ontario California USA Figure 3 EZCT 2000B Insulation Resistance Test Cable Co
66. rd s is inserted in the EZCT 2000B s USB Flash drive port USB MEM port Then start from the START UP menu 1 EUH TEST 17709 a Ee UP BPs 3 ma TEST PLAHS DIAGHOSTICS CURRENT SOURCE Press the 2 key SETUP b The following screen will be displayed RECORD ID FRIHT RECORD RECORD DIRECTOR SAVE RESTORE RECORD ERASE HEST PAGE Hirn dH Press the 4 key SAVE RESTORE RECORD c The following screen will be displayed 1 RESTORE RECORD 2 COPY TO THUMB DRIVE Press the 1 key RESTORE RECORD d The following screen will be displayed 1 INTERHAL STORAGE 2 THUMB DRIVE Press the 2 key THUMB DRIVE REV1 EZCT 2000B USER S MANUAL e The following screen will be displayed RESTORE THUME DRIVE REC Type the record number that you would like to restore and press the ENTER key If you do not know the record number you can print a test record directory Please see section 3 4 5 for details f The following screen will be displayed while the record is being restored RESTORIHG THUMB DRIVE REC EB _ PLEASE WAIT The following screen will be displayed once the test record has been restored RECORD 861 RESTORED PRIHT RECORD YES If you not want to print the test record press the 2 key The test record will be restored to the working memory and you will be returned to the S
67. rol To advance the thermal printer paper press and release the PAPER Contrast key To retract the thermal printer paper press and release the PAPER v Contrast key 24 Printer Paper The EZCT 2000B s built in thermal printer uses 4 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 Vanguard Instruments Co Inc 1520 S Hellman Avenue Ontario CA 91761 Tel 909 923 9390 Fax 909 923 9391 Part Number VIC TP 4 paper BG Instrument Co 13607 E Trent Avenue Spokane WA 99216 Tel 509 893 9881 Fax 509 893 9803 Part Number VIC TP 4 paper REV1 EZCT 2000B USER S MANUAL 25 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 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 Place the paper roll into the paper holder Lift the thermal head and align the thermal paper if necessary e Re installthe printer cover 2 6 Compute
68. rom the START UP menu 1 EUH TEST B2 16 18 2 SETUP 18 24 25 5 TEST FLAHS 4 DIBGH STIC 5 SOURCE Press the 2 key SETUP b The following screen will be displayed a RECORD IL FRINT FECORD RECORD DIRECTORY SAVE RES RECORD ERASE HEAT PAGE Press the 6 key NEXT PAGE c The following screen will be displayed 1 SET TIME 2 BURIED CT DELTA 5 KHEE MARKER 4 PRIHT FAH DATA Press the 2 key BURIED CT IN DELTA d The following screen will be displayed 1 BURIED CT DELTA 2 BURIED DELTA OFF Press the 1 key BURIED CT DELTA ON REV1 EZCT 2000B USER S MANUAL e The following screen will be displayed Press the 1 key YES f Thefollowing screen will be displayed Press any key to return to the START UP menu 4 2 2 Disabling the Buried CT in Transformer Delta Option To disable the Buried CT in Transformer Delta Option a Start from the START UP menu Press the 2 key SETUP EZCT 2000B USER S MANUAL REV1 The following screen will be displayed RECORD IL FRIHT RECORD RECORD DIRECTORY SAVYE RES RECORD ERASE HEAT PAGE Press the 6 key NEXT PAGE The following screen will be displayed 1 SET TIME 2 BURIED CT IN DELTA 5 POINT MARKER 4 DATA Press the 2 key BURIED CT IN DELTA
69. s After the record has been copied the following screen will be displayed Press the 1 key YES if you would like to copy another record and repeat the process above Press the 2 key NO to return to the START UP menu REV1 EZCT 2000B USER S MANUAL 2 COPY ALL RECORDS Press the 2 key COPY ALL RECORDS if you would like to copy all the test records from the EZCT 2000B to the USB Flash drive The following screen will be displayed SAVIHG RECORD 1 TO THUMB DRIVE PLEASE WAIT above progress screen will displayed for each test record being copied When all the test records have been copied the following screen will be displayed ALL RECORDS HAVE BEEH TRAHSFERRED TO THUMB DRIVE Press any key to return to the START UP menu EZCT 2000B USER S MANUAL REV1 3 4 7 Erasing Test Records From the Flash EEPROM You can erase individual or all test records stored in the EZCT 2000B s Flash EEPROM To erase a test record a Start from the START UP menu RUM TEST Bel n9 SETUP 18 14 25 TEST FLAHS DIAGHOSTICS CURRENT SOURCE Press the 2 key SETUP b The following screen will be displayed RECORD IL FRIHT RECORD RECORD DIRECTOR SAVE RESTORE RECORD ERASE HEST PAGE OO Es Lal be Press the 5 key ERASE RECORD c The following screen will be displayed ERASE RECORD 1 ERASE SINGLE FEC 2 ERASE ALL RECORDS
70. scription Insulation resistance meter connectors Current transformer excitation voltage connectors Each set of connectors contains a test voltage connector and sensing connector The EZCT 2000B s X output terminals are rated to 2000 Vac working voltage Any voltage above 2000 Vac will damage the input circuitry Current transformer primary input test cable connector Grounding stud AC receptacle Power switch with built in circuit breaker Back lit graphic LCD screen 128 x 64 viewable in bright sunlight and low light levels Rugged alpha numeric membrane keypad LED warning indicator that is illuminated when high voltage is present Emergency turn off switch USB Flash drive interface USB PC interface RS 232C PC interface Baud rate is set for 115KB 8 data bits 2 stop bits Built in 4 5 inch wide thermal printer AC current source connectors EZCT 2000B USER S MANUAL REV1 2 0 PRE TEST SETUP 2 1 Operating Voltages The EZCT 2000B s operating voltage is preset at the factory for 100 120 Vac 50 60 Hz or 200 240 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 Release the button when the desired contrast level has been reached To decrease the LCD screen contrast press and hold the PAPER v Contrast key for two seconds Release the button when the desired contrast level has been reached 2 3 Printer Paper Cont
71. substation ground before connecting the test cables to a transformer 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 EZCT 2000B test unit To ensure that all designed safety features are maintained it is highly recommended 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 EZCT 2000B USER S MANUAL TABLE OF CONTENTS CONVENTIONS USED IN THIS DOCUMENT nnn nns 1 1 0 INTRODUCTION CT 2 11 General Description and rere ve reb DOR pa uk eu ug eo Db XE 2 1 2 Furnished Test Accessories n e PEE RUDI ida RUE 4 13 Technical Specifications s s NER UE e MIND DU DRE EUR BU IR E 5 14 EZCT 20DUB Controls and Indicators enu Ev Ead 6 428 PRE TEST SETUP nr 8 221 Operating IS i ERO mec 8 2 2 LCD Screen Contrast ou qaa raa iude Read casta cd 8 2 3 Printer Paper Mm 8 2 4
72. t or can be computer controlled It can be connected to a PC via the standard RS 232C or USB port In computer controlled mode test records can be downloaded from the EZCT 2000B s memory or CT tests can be run from the PC A Windows XP Vista based Current Transformer Analysis software application is provided with the EZCT 2000B and can be used to transfer test records from the EZCT 2000B to a PC Test plans can also be created with the provided software Additionally tabulated test records can be exported to Microsoft Excel 1 2 Furnished Test Accessories The EZCT 2000B comes furnished with the following 1 Power Cord 5 20 foot X Cable Sets 1 35 foot H Cable Set Current Source Cables Insulation Test Cables Ground Cables Transportation Case REV1 EZCT 2000B USER S MANUAL 1 3 Technical Specifications Table 1 EZCT 2000B Technical Specifications TYPE PHYSICAL SPECIFICATIONS INPUT POWER MEASUREMENT METHOD TEST OUTPUT VOLTAGES CURRENT SOURCE CURRENT SOURCE DISPLAY VOLTAGE READING RANGE CURRENT READING RANGE CT CURRENT RATIO RANGE PHASE ANGLE MEASUREMENT RESISTANCE READING RANGE INSULATION RESISTANCE READING RANGE DISPLAY PRINTER COMPUTER INTERFACES EXTERNAL DATA STORAGE PC SOFTWARE INTERNAL TEST RECORD STORAGE INTERNAL TEST PLAN STORAGE SAFETY ENVIRONMENT CABLES WARRANTY Portable current transformer test set 19 W X 13 H x 15 8 D 48 3 cm x 33 0 cm x 40 1 cm Weight 73 Ibs 33 1 kg
73. tead of the above screen NOTE 1 RESTORE RECORD 2 COPY TO THUMB DRIVE Press the 1 key RESTORE RECORD The following screen will be displayed REV1 EZCT 2000B USER S MANUAL 1 IHTERHAL STORAGE 2 THUMB DRIVE Press the 1 key INTERNAL STORAGE The following screen will then be displayed RESTORE RECORD 1 EHTER RECORD HUMBER 2 SCROLL SELECT Continue with the steps below 1 ENTER RECORD NUMBER If you know the record number that you would like to restore press the 1 key 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 RECORD RESTORED FRIHT RECORD 1 WES 2 If you do not want to print the test record press the 2 key NO The test record will be restored to the working memory and you will be returned to the START UP menu If you would like to print the test record press the 1 key YES Continue to step d EZCT 2000B USER S MANUAL REV1 2 SCROLL TO SELECT Press the 2 key if you would like to scroll through a directory of the stored test records The following screen will be displayed RECORD DIRECTORY SCROLL TO SCROLL Press the PAPER Contrast button or the PAPER v Contrast key to display the next or previous test record respectively The test record i
74. tions can be stored per test plan and up to 128 CT test plans can be stored in the EZCT 2000B s Flash EEPROM The ability to use test plans makes CT testing an extremely simple process To perform a test the EZCT 2000B is connected to the CT terminals and a test plan is selected to run 3 5 1 Extracting the Test Plan From a Test Record A test plan can be extracted from a test record for immediate or future use You can extract the test plan immediately after performing a test or you can extract the test plan from a restored test record see section 3 4 1 for instructions on how to restore a test record To extract a test plan from a test record a Either perform a test see section 3 2 or recall a test record see section 3 4 1 that you would like to extract the test plan from b Start from the START UP menu RUN TEST 6 17 89 SETUP 19 14 25 TEST PLANS DIAGHOSTICS CURRENT SOURCE Press the 3 key TEST PLANS c The following screen will be displayed 1 LOAD TEST UHLIA TEST FLAH FLAH DIRECTORY TEST FLAH FRIHT TEST FLAH ERASE TEST FLAH COPY TO THUME DRIVE Uh CD Press the 4 key EXTRACT TEST PLAN REV1 EZCT 2000B USER S MANUAL d The following screen will be displayed The test plan will be extracted from the test record in the working memory and will be saved to the EZCT 2000B s Flash EEPROM as a new test plan The test plan number will be au
75. tomatically incremented by the EZCT 2000B Press any key to return to the START UP menu EZCT 2000B USER S MANUAL REV1 3 5 2 Printing a Directory of Test Plans Stored in the EZCT 2000B s Memory You can print a directory of all the test plans stored in the EZCT 2000B s Flash EEPROM using the steps below a Start from the START UP menu 1 2 ce 4 d RUM TEST SETUP 18 14 25 TEST FLAHS DIAGHOSTICS SOURCE Press the 3 key TEST PLANS b The following screen will be displayed BUD LOAD TEST FLAH JUHLAT TEST PLAH FLAH DIRECTORY TEST FLAH FRIHT TEST FLAH ERASE TEST FLAH CDF TO THUMB DRIVE Press the 3 key PLAN DIRECTORY The following screen will be displayed while the test plan directory is printed on the thermal printer FRIHTIMG DIRECTOR The above screen will be displayed only if a USB Flash drive is NOT connected to the EZCT 2000B s USB Flash drive port If a USB Flash drive is connected the following screen will be displayed NOTE 1 IHTERHAL DIRECTORY 2 THUMB DRIVE DIR Press the 1 key INTERNAL DIRECTORY Continue with the steps below TS REV1 EZCT 2000B USER S MANUAL You will be automatically returned to the START UP menu after the directory printing is finished A typical Flash EEPROM test plan directory printout is shown in Figure 15 TESE PLAN DI F TEST PLAN NUMBER OF COMPANY STATION CIR
76. yed Pressthe 1 key YES to keep the test results i following screen will be displayed Press the ENTER key to continue j following screen will be displayed Press the 2 key NO O 9 EZCT 2000B USER S MANUAL REV1 k The following screen will be displayed Pressthe 1 key YES to save the record The following screen will be displayed momentarily l following confirmation screen will then be displayed Press the ENTER key and you will be returned to the START UP menu EXCITATION TEST RESULTS DATE 1 O TIME R0 chc COMPANY VANGUARD STATION CIRCUIT MER MODEL s N COMMENTS OPERATOR TST NOTE BURDEN TEST RESULTS 5 AMP BURDEN TEST MEAS CURRENT S 5 A MEAS VOLTAGE 983 lt 4e IMPEDANCE c gt OHMS BURDEN A e cos e c Figure 11 EZCT 2000B Typical Burden Test Results Report Printout E REV1 7 2000 USER S MANUAL 3 3 4 Performing an Insulation Resistance Test To perform an insulation resistance test a Make connections per the figure below X1 X2 X3 X4 X5 GND AC CURRENT SOURCE 0 20A EZL 7 20008 Current Transformer Tester Vanguard Instruments Co Inc Ontario California USA b Start from the START UP menu 1 RUM TEST 2 SETUP 18 14 29 5 TEST FLAHS 4 DIAGHOSTICS 9

EZCT-2000B - Vanguard Instruments Company, Inc.

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