Vanguard Instruments ATRT-03 Mounting instructions

OPERATING INSTRUCTIONS
for the
Transformer Ratio Analysis Software
Models ATRT-03, ATRT-03A and ATRT-03B
Transformer Turns-Ratio Meters
Vanguard Instruments Co., Inc.
1710 Grevillea Court
Ontario, California 91761
TEL: [phone] Oct. 2005
FAX: [phone] REV. 04

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Table of Contents
1. INTRODUCTION..........................................................................................................................4
1.1 Hardware Requirements............................................................................................................. 5
1.2 RS-232C Cable.......................................................................................................................... 5
2.0 SOFTWARE INSTALLATION ...................................................................................................6
3.0 STARTING THE PROGRAM......................................................................................................8
3.1 Program Main Screen ................................................................................................................ 8
3.2 Program Setup......................................................................................................................... 10
3.2.1 Printer Setup Menu ............................................................................................................... 10
3.2.2 Program Setup Menu ............................................................................................................ 11
4.0 USING THE PROGRAM...........................................................................................................12
4.1 Calculator................................................................................................................................ 12
4.2 File Utilities menu ................................................................................................................... 13
4.2.1 Delete Test Record or Test Plan Menu.................................................................................. 15
4.2.2 Copy Test Record or Test Plan Menu.................................................................................... 15
4.2.3 Copy a Test Record or Test Plan From a Floppy or Drive ..................................................... 16
4.2.4. Export a Test Record or Test Plan........................................................................................ 18
5.0 EXCHANGING INFORMATION WITH THE ATRT-03..........................................................18
5.1 Retrieving Test Records From the ATRT-03............................................................................ 18
5.2 Retrieving Test Plans From ATRT-03 Memory ....................................................................... 20
5.3 Transfer a Test Plan To The ATRT-03..................................................................................... 21
6.0 CREATING A TEST PLAN.......................................................................................................23
6.1 Creating a Test Plan For a Transformer.................................................................................... 23
6.2 Create a Test Plan for a Load Tap Changer .............................................................................. 29
6.3 Create a Test Plan for a Voltage Regulator............................................................................... 32
6.4 Review and Edit Test Plans..................................................................................................... 34
7.0 RUN TRANSFORMER RATIO TEST.......................................................................................35
7.1 Run a Transformer Ratio Test Using a Test Plan...................................................................... 35
7.2 Run a Transformer Test Using Create Test Command.............................................................. 41
8.0 RECALLA TEST RECORD OR TEST PLAN ..........................................................................43
8.1 Recall a Test Record From Working Directory ........................................................................ 43

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List of Figures
Figure 1. Software Setup Menu #1......................................................................................................6
Figure 2. Software Setup Menu #2......................................................................................................7
Figure 3. Program Main Screen ..........................................................................................................8
Figure 4. Main Menu Bar ...................................................................................................................9
Figure 5. Print Setup Menu...............................................................................................................10
Figure 6. Program Setup menu..........................................................................................................11
Figure 7. Calculator Menu................................................................................................................12
Figure 8. File Utilities menu .............................................................................................................13
Figure 9. Directory Window of Test Plan Menu................................................................................14
Figure 10. Print Test Plan Directory Menu.........................................................................................14
Figure 11. Copy a Test Plan Menu....................................................................................................15
Figure 12. Copy a Test Plan From a Directory Menu 1 .....................................................................16
Figure 13. a Test Plan From a Directory Menu 2...............................................................................17
Figure 14. ATRT-03 Test Record Directory......................................................................................19
Figure 15. ATRT-03 Test Plan Directory..........................................................................................20
Figure 16. Test plan Directory Display .............................................................................................21
Figure 17. ATRT-03 Test Plan Memory Directory............................................................................22
Figure 18. Create a Transformer Test Plan menu 1 ...........................................................................23
Figure 19. Create a Transformer Test Plan Menu 2...........................................................................24
Figure 20. Create a Transformer Test Plan Menu 3...........................................................................25
Figure 21. Create a Transformer Test Plan Menu 4...........................................................................26
Figure 22. Create a Transformer Test Plan Menu 5...........................................................................27
Figure 23. Create a Transformer Test Plan Menu 6...........................................................................28
Figure 24. Create a Test Plan For Load Tap Changer Menu 1...........................................................29
Figure 25. Create a Test Plan for a Load Tap Changer Menu 2 .........................................................31
Figure 26. Create a Test Plan for Voltage Regulator .........................................................................32
Figure 27. Recalled Test Plan ...........................................................................................................34
Figure 28. Run a Transformer Test Using a Test Plan Step 1 ............................................................35
Figure 29. Run a Transformer Test Using a Test Plan Step 2 ............................................................36
Figure 30. Run a Transformer Test Using a Test Plan Step 3 ............................................................37
Figure 31. Run a Transformer Test Using a Test Plan Step 4 ............................................................38
Figure 32. Run a Transformer Test Using a Test Plan Step 5 ............................................................39
Figure 33. Run a Transformer Test Using a Test Plan Step 6 ............................................................40
Figure 34.Create Test Menu 1..........................................................................................................41
Figure 35. Create Test Menu 2..........................................................................................................42
Figure 36. Recall a Test Record Setp 1.............................................................................................43
Figure 37. Recall a Test Record Step 2.............................................................................................44
Figure 38. Recall a Test Record Step 3 .............................................................................................45
Figure 39. Typical Test Record Printout ...........................................................................................46

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1. INTRODUCTION
The Transformer Ratio Analysis Software is a Windows™based software program to be used with
Vanguard Instruments Company’s line of Three-Phase Transformer Winding-Ratio Testers (ATRT-03,
ATRT-03A, ATRT-03B). The software program operates the same with all Models of the ATRT-03.
The name ATRT-03 will be used to address all the ATRT-03 models in this manual.
The program allows the Model ATRT-03 to test winding turns-ratio of transformers, voltage
regulators, and load-tap changers under the control of an IBM compatible PC. The program has three
main features that simplify and partially automate testing when using the ATRT-03.
?The program allows users to create test plans for transformers, voltage regulators, and load-
tap changers. The user can create a transformer test plan by entering each tap voltage (high side
and low side). Voltage regulator and Load Tap Changer test plans can be created by entering
the neutral position tap voltages and voltage step (as a fraction). The program will
automatically create a “Calculated Ratio” table. This eliminates the time-consuming task of
entering tap voltages.
The test plan can also be stored in the ATRT-03 tester memory. By using the stored test plan in
the ATRT-03 memory, users can quickly test transformers in the field and obtain test results,
percentage-error calculation and PASS/FAIL display. A print out from the thermal printers can
be obtained with the ATRT-03 and ATRT-03A.
?The program allows the users to run transformer turns-ratio test directly from aPC (using the
ATRT-03 under computer control mode). Since test results are sent electronically to the PC, no
manual transfer of data is required, thus eliminating human error in the data collection process.
Running a test using a test plan from the PC, the test results (ratio readings) are recorded, turns-
ratio reading percentage error is calculated and PASS/FAIL flag is also displayed.
?The same program can be used to retrieve test records stored in the ATRT-03 memory. This
feature allows the user to test transformers in the field without the use of aPC. Test records can
be stored in the ATRT-03 internal memory (to be retrieved and sent to the PC later).
The program computes the “Measured Ratio” of the unit under test and compares it to the “Calculated
Ratio.”The program computes the difference and displays it as a percentage difference, which can be
used to determine if a transformer’s windings turns-ratio is within manufacturer's specifications.
The program can also store test plans and test results on any storage medium the PC may have. This
permits users to share test plans, and to recall test results for review or printing. The test record can be
exported to a text file format allowing the user to export the test report into WORD or EXCEL.
NOTE
This software package can also be used with the Models ATRT-01,
ATRT-01B, ATRT-01D under computer control mode. This software
package will support a single-phase transformer test only when usedwith
Models ATRT-01, ATRT-01B, ATRT-01D.

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1.1 Hardware Requirements
The ATRT-03 Software program operates on an IBM compatible PC with the following requirements:
?2 Megabytes of RAM
?1 Megabyte of hard-drive space
?Windows 95 or later version
?RS-232 COM port
1.2 RS-232C Cable
The ATRT-03 Software Package is shipped with a four (4) foot long RS-232 cable. The cable is a
serial communications extension cable that uses male-to-female 9-pin, D-type connectors. The pin
connections are as follows:
Male Female Signal
2 2 Tx
3 3 Rx
5 5 Gnd
NOTE
A null modem cable, which crosses pins 2 and 3, will not work.

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2.0 SOFTWARE INSTALLATION
To install the ATRT-03 Transformer Test Software program, perform the following steps:
1. Place the software CD installation disk into the appropriate PC drive. Some computers will
automatically access the CD drive and a window will appear showing its contents. If not,
the disk’s contents can be accessed by using the “Windows Explorer” or “My Computer”
icons on the desktop.
2. The “ATRT setup revxx-xx.exe” file on the disk can be run from a copy made to an
appropriate folder on the PC’s hard drive or the setup file can be run from the disk.
3. Click on “Next” to complete installation.
Figure 1. Software Setup Menu #1

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4. When the installation is complete, the screen shown in Figure 2.0 will display. It is
recommended that the shortcut be copied or moved to the desktop for quick access.
Figure 2. Software Setup Menu #2

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3.0 STARTING THE PROGRAM
The program does not have to be connected to an ATRT-03 to operate. Many of its functions only
require a computer. To start the program on the PC, double click the Transformer Tester icon (shown
in Figure 2) on the desktop or the “attr.exe” file.
3.1 Program Main Screen
Once the program has started, the main screen shown in Figure 3 will display.
Figure 3. Program Main Screen

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Click the “File” button to see the drop down menu (see Figure 4). The options with right-facing arrows
(?) have sub options that are also available. Clicking on one of these options will list its sub options.
Clicking on the sub option will select it.
Figure 4. Main Menu Bar

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3.2 Program Setup
3.2.1 Printer Setup Menu
Before using the program, the “Print setup…” and “Program setup…” menu options should be selected
and performed, especially when the program is being used for the first time on a particular PC or when
the printer or communications port being used has changed.
Selecting the “Printer Setup…” menu option will display the standard Windows TM Printer Setup
dialogue box as shown in Figure 5. Select the printer to be used and the appropriate options with the
dialogue box.
Figure 5. Print Setup Menu

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3.2.2 Program Setup Menu
Selecting the “Program Setup…” menu option will display the dialogue box shown in Figure 6. Select
the correct communications port to be used from the port list.
Test limit defines the number of tests to be used in the transformer test plan. If the transformer has 10
tap positions, the test limit should be set to 10. Type the maximum number of tests that need to be run
in the Test Limit box. Clicking the “Save Setup File” will use these selections as default values when
the program is run again.
Figure 6. Program Setup menu

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4.0 USING THE PROGRAM
The users can now use the program to create test plans, run tests, and retrieve test records stored in the
ATRT-03 memory. Each of the menu options and sub options will be described in the following
sections.
4.1 Calculator
The “Calculator” option is used to quickly calculate the turns winding ratio of a transformer. To access
the calculator, select the calculator option of the “File” menu. It displays the calculator dialog box
shown in Figure 7. To use the calculator, type in the H voltage, X voltage and select transformer type.
Click on the “Calculator” button to get the ratio.
The percent option allow the user to calculate turn ratio at a percentage based on the name plate
voltages.
Figure 7. Calculator Menu
NOTE
The above figure shows H name plate voltage of 12,000 V and X name plate voltage of 1200
V. The transformer type is single phase, the turn ratio should be calculated as follows:
Ratio = (VH)/(Vx) = 12000/1200 = 10
Since the “Percent” setting is 80%, the ratio is now changedto:
Ratio = 10 x 80% = 8.00

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4.2 File Utilities menu
The “Utilities” option of the “File” menu is a collection of utilities that can be used to manipulate test
plan or test records. Clicking the “Utilities” option displays the sub options available. Each sub option
also has a second level of sub options. The second level of sub options is always the same for each of
the sub options; it allows the user to perform the function with either a test plan or a test record. This
can be seen inFigure 8.
Figure 8. File Utilities menu
Each of the four file functions (Delete, Copy, Copy From Floppy, Export) accesses test plans and tests
records in the same way. Figure 9 shows the directory window that appears after anyone of the file
functions is selected. The directory window only shows the type of files that were selected in the
second level sub option. If test plans were selected then only “*.PLN” files will be displayed. If tests
were selected, then only “*.tst” files will be displayed. Test plan files are selected in Figure 8 above.
To select a file displayed in the window click on the file to highlight it, then click the “OK” button.
Clicking the “Cancel” button in any window closes the window and cancels the file function that was
selected.
The user is given the ability to change directories by clicking the “Change Dir” button. This brings up
the “Browse Folder” that gives the user access to all the drives and folders available to the PC being
used. This is also shown in Figure 9.0. To select a folder, click on it to highlight it, then click the
“OK” button. The files of the specific type selected will be displayed in the directory window and the
directory path will be updated.

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Figure 9. Directory Window of Test Plan Menu
The user can also print the directory by clicking the “Print Directory” button. The Windows TM Printer
Setup dialogue box appears and is defaulted to the printer selected in Section 3.2. This is shown in
Figure 10.
Figure 10. Print Test Plan Directory Menu

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4.2.1 Delete Test Record or Test Plan Menu
The delete function removes a test plan or test record from the directory to which the program is
pointing. Care must be used with this function as it is permanent and deleted files cannot be recovered.
The deleted files are not sent to the Windows TM Recycle Bin.
Select the “Delete” sub option from the “Utilities” menu and then select the type of file to be deleted
(Figure 8). Select the file to be deleted from the directory window and click the “OK” button. The file
will be permanently removed.
4.2.2 Copy Test Record or Test Plan Menu
The copy function permits the copying of a test record or test plan stored on the PC to any destination
that is available to the PC. This can range from another folder on the same drive, to a floppy disk,
Flash drive, or a network drive. This function allows users to share test plans and test records.
Select the “Copy” sub option from the “Utilities” menu and then select the type of file to be copied
(Figure 8). Select the file to be copied from the directory window and click the “OK” button. A
dialogue box asking for the destination will appear as shown in Figure 1. Type in the path to the
destination and click the “OK” button of the dialogue box (default destination is A drive). The file will
be copied to the destination and both the directory window and the dialogue box will be closed.
Figure 11.Copy a Test Plan Menu

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4.2.3 Copy a Test Record or Test Plan From a Floppy or Drive
This function permits the program to copy a test plan or test record from a floppy disk or another
source or location to the folder to the working folder.
Select the “Copy From Floppy” sub option from the “File” menu (Figure 8). A dialogue box asking for
the path of the source files to be copied will appear (as shown in Figure 12). The default path is set for
A drive. The user can type in the path to the source and click the “OK” button of the dialogue box.
Figure 12. Copy a Test Plan From a Directory Menu 1

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A directory window will appear with a list of files to be selected. Select the filesto be copied. Click the
“OK” button of the directory window and the file will be copied to the folder to which the program is
pointing and the directory window will be closed.
Figure 13. a Test Plan From a Directory Menu 2

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4.2.4. Export a Test Record or Test Plan
Export is a function that generates a formatted text file of a test plan or test report file. This function
gives the user the ability to work with a neatly formatted text file to include in a report. The file can
also be opened in a spreadsheet (such as Microsoft Excel) if desired.
5.0 EXCHANGING INFORMATION WITH THE ATRT-03
The program has the capability of transferring test plans (created on the PC) to the ATRT-03, which
then can be run without a PC from the ATRT-03’s keypad. The program also allows the users to
retrieve test records and test plans stored in the ATRT-03’s FLASH memory to the PC.
The users need to put the ATRT-03 under computer interface before trying the above features. To put
the ATRT-03 under computer interface, perform the following steps:
1. Use the provided RS232 cable to connect the ATRT-03 to the PC.
2. Put the ATRT-03 into computer interface, press key #2 (SETUP), press key #4 (NEXT
PAGE), press key #1 (COMP ITF).
The order in which the previous steps are performed is not important. It is only necessary that the steps
be completed. Failure to complete any step will result in a communications error, but will not damage
the PC or the ATRT-03.
5.1 Retrieving Test Records From the ATRT-03.
Select the “Retrieve Test from TTR” menu option. The ATRT-03 will audibly beep once to indicate it
has been accessed. The ATRT-03 Directory screen will display all the test records stored in the ATRT-
03’s memory (Figure 14).
Click on the test record to highlight the test record selection. More than one test record can be selected
by holding the computer’s CTRL key when clicking a file. All the test records can be also selected by
clicking the “Select All” button in the dialogue box.

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Figure 14. ATRT-03 Test Record Directory
Click “OK” button to retrieve the selected test records from the ATRT-03 now. The program will
retrieve the test records from the ATRT-03 and store in the program working directory. The Test
Record Directory menu will disappear after the file transfer is completed.
The test record file name uses the file name prefix and the test plan number listed in the directory.
For example, select test record # 1 from the ATRT-03 memory, the file name shall be “TEST1”.
The “Filename Prefix” box allows the user to type in text that will precede the test record number. The
default file name prefix is “TEST”. All the files selected will have the same prefix when uploaded to
the PC.

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5.2 Retrieving Test Plans From ATRT-03 Memory
Select the “Retrieve Test Plan from TTR” menu option (Figure 8). The ATRT-03 will beep once to
indicate it has been accessed. The ATRT Test Plan Directory screen will display all the test plans
stored in the ATRT-03’s memory (Figure 15).
Click on the test plan to highlight the selection. More than one test plan can be selected by holding the
computer’s CTRL key when clicking a file. All the test plans can also be selected by clicking the
“Select All” button in the dialogue box.
Figure 15. ATRT-03 Test Plan Directory
Click the “OK” button to retrieve the selected test plans from the ATRT-03 memory now. The
program will retrieve the test plans from the ATRT-03 and store in the working directory. The Test
Plan Directory screen will disappear after the file transfer is completed.
The test plan file name uses the file name prefix and the test plan number listed in the directory.
For example, select test plan # 1 from the ATRT-03 memory, the file name shall be “PLAN1”.
The “Filename Prefix” box allows the user to type in text that will precede the test plan number. The
default file name prefix is “PLAN.”All the files selected will have the same prefix when uploaded to
the PC.