Vanguard Instruments ATRT-03 Operating Instructions Manual
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Vanguard Instruments ATRT-03 Operating Instructions Manual

Three-phase transformer turns-ratio meter
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Models ATRT-03, ATRT-03A and ATRT-03B
Three-Phase Transformer Turns-Ratio Meter
TEL: 909-923-9390
FAX: 909-923-9391
OPERATING INSTRUCTIONS
for
Vanguard Instruments Co., Inc.
1710 Grevillea Court
Ontario, California 91761
I-917
August 2002
REV. 02

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  • Page 1 I-917 OPERATING INSTRUCTIONS Models ATRT-03, ATRT-03A and ATRT-03B Three-Phase Transformer Turns-Ratio Meter Vanguard Instruments Co., Inc. 1710 Grevillea Court Ontario, California 91761 TEL: 909-923-9390 August 2002 FAX: 909-923-9391 REV. 02...
  • Page 2 Model ATRT-03 (v) Operating Instruction...
  • Page 3 Any deviation from procedures described in this operator’s manual may create one or more safety hazards, damage the ATRT-03 or the test transformer, or cause errors in the test results. Vanguard Instruments Co., Inc. assumes no liability for unsafe or improper use of the ATRT-03.

  • Page 4: Table Of Contents

    14-8. Print Transformer Test Results Menu ................35 14-9. Print Transformer Test Results Format Menu..............36 14-10. ATRT-03/03A Test Result Print Out In Column Format..........37 14-11. ATRT-03/03A Test Result Print Out In Detail Format............ 38 14-12. Keep Transformer Ratio Reading Menu ................39 14-13.
  • Page 5 22-3. Test Result Display Using Test Plan .................. 74 22-4. Test Result Print Out Using Test Plan................75 23.0 Change ATRT-03/03A/03B Real Time Clock ..............76 23-1. Set Real Time Clock Setup Menu ..................76 23-2. Set Time and Date ......................77 24.0...
  • Page 6 Table 5-1. ATRT-03/3A/3B Cable Set ..................... 10 Table 6-1. Cable Markings and Identification .................. 10 Table 7-1. Model ATRT-03 Front-Panel Controls, Indicators, and Connectors ......12 Table 7-2. Model ATRT-03A Front-Panel Controls, Indicators, and Connectors ......14 Table 7-3. Model ATRT-03B Front-Panel Controls, Indicators, and Connectors ......16 Table 10-1.
  • Page 7 Model ATRT-03 (v) Operating Instruction List of Figures Figure 7-1. Model ATRT-03 Front-Panel Controls, Indicators, and Connectors......11 Figure 7-2. Model ATRT-03A Front-Panel Controls, Indicators, and Connectors......13 Figure 7-3. Model ATRT-03B Front-Panel Controls, Indicators, and Connectors ......15 Figure 13A. Typical Connection for Single-Phase Transformer ............19 Figure 13B.
  • Page 8 Figure 22-3. Test Result Display with Test Plan ................74 Figure 22-4. Test Result Print Out of a Single Phase Transformer Test Using Test Plan....75 Figure 23-1. ATRT-03/03A/03B Setup Menu.................. 76 Figure 23-2. Time and Date Display ....................77 Figure 24-2.

  • Page 9: Introduction

    The ATRT-03/03A/03B can be used in the stand-alone or computer control mode. Under computer control, the user can control the ATRT-03/03A/03B via the RS-232C port with an IBM PC. The ATRT-03/03A/03B is supplied with single and three-phase hook-up (H & X) cables. Three phase transformers are tested without changing test leads for each phase tested.

  • Page 10: Principle Of Operation

    Before any tests are performed, the ATRT-03/03A/03B checks test-lead hook-ups for error. The ATRT-03/03A/03B applies a low-level test voltage (300 mV) across the winding being tested and senses the induced secondary voltages. When an induced voltage is greater than the applied excitation voltage the test unit detects a hookup error.

  • Page 11: Specifications

    Model ATRT-03 (v) Operating Instruction 5.0 Specifications Model ATRT-03/03A/03B specifications are listed in Table 5-0. Table 5-0. Model ATRT-03/03A/03B Turns-Ratio Meter Specifications (Unless otherwise indicated, each specification is the same for all three ATRT-03 models.) Type Portable, Automatic, Three-Phase Transformer Turns-Ratio Meter Size (inches)

  • Page 12: Atrt-03/03A/03B Supplied Cables

    Model ATRT-03 (v) Operating Instruction 5-1. ATRT-03/03A/03B Supplied Cables Table 5-1. ATRT-03/3A/3B Cable Set Item Description H Test-Lead Cable, 15-foot Single-Phase Cables X Test-Lead Cable, 15-foot Single-Phase Cables H Test-Lead Cable, 15-foot Three-Phase Cables X Test-Lead Cable, 15-foot Three-Phase Cables...

  • Page 13: Atrt-03/03A/03B Front Panel Descriptions

    Model ATRT-03 (v) Operating Instruction 7.0 ATRT-03/03A/03B Front Panel Descriptions 7-1. ATRT-03 Operating Controls and Indicators Figure 7-1. Model ATRT-03 Front-Panel Controls, Indicators, and Connectors...

  • Page 14: Table 7-1. Model Atrt-03 Front-Panel Controls, Indicators, And Connectors

    Model ATRT-03 (v) Operating Instruction Table 7-1. Model ATRT-03 Front-Panel Controls, Indicators, and Connectors Fig. 7-1 Index Panel Markings Functional Description EMERGENCY Emergency turn-off test voltage switch. TURN OFF “PUSH” H Voltage Test Connector. None (Display) LCD screen: 4 line by 20 character, back-lighted and legible in the sunlight.

  • Page 15: Atrt-03A Operating Controls And Indicators

    Model ATRT-03 (v) Operating Instruction 7-2. ATRT-03A Operating Controls and Indicators Figure 7-2. Model ATRT-03A Front-Panel Controls, Indicators, and Connectors...

  • Page 16: Table 7-2. Model Atrt-03A Front-Panel Controls, Indicators, And Connectors

    Pushbutton operating controls, 16-keys. TEST IN PROGRESS Red LED, Test In Progress. This LED flashes when the ATRT-03 responds to a command or when test voltage is applied to the test transformer. The ATRT-03 flashes the LED and beeps at a one second rate during tests.

  • Page 17: Atrt-03B Operating Controls And Indicators

    Model ATRT-03 (v) Operating Instruction 7-3. ATRT-03B Operating Controls and Indicators Figure 7-3. Model ATRT-03B Front-Panel Controls, Indicators, and Connectors...

  • Page 18: Table 7-3. Model Atrt-03B Front-Panel Controls, Indicators, And Connectors

    Model ATRT-03 (v) Operating Instruction Table 7-3. Model ATRT-03B Front-Panel Controls, Indicators, and Connectors Fig. 7-3 Index Panel Markings Functional Description None (Display) LCD screen: 4 line by 20 character, back-lighted and legible in the sunlight. Displays menus, test results and status readouts.

  • Page 19: Atrt-03/03A Printer And Printer Paper

    9.0 ATRT-03/03A/03B Storage Capabilities 9-1. ATRT-03/03A/03B Test Record Storage Capabilities The ATRT-03/03A/03B is capable of storing up to 200 transformer test records. These test records are stored in the FLASH EEPROM. Users can retrieve these records from the FLASH EEPROM to be either printed by the thermal printer or transferred to a PC.

  • Page 20: Atrt-03A Operating Voltages

    LCD screen, press and hold the “↓ Contrast” button for two seconds. 11-2. ATRT-03/03B Test Voltages The ATRT-03 and ATRT-03B have 3 selectable test voltages: 8 Vac, 40 Vac, and 100 Vac. The ATRT-03A uses 20 Vac for test voltage. Refer to paragraph 26.0 for test voltage selection.

  • Page 21: Typical Transformer Connection To Atrt-03/03A/03B

    Model ATRT-03 (v) Operating Instruction 13-3. Typical Transformer Connection to ATRT-03/03A/03B Figure 13A. Typical Connection for Single-Phase Transformer Figure 13B. Typical Connection for Single-Phase Auto Transformer...

  • Page 22: Figure 13C. Typical Connection For Type A Voltage Regulator

    Model ATRT-03 (v) Operating Instruction Figure 13C. Typical Connection for Type A Voltage Regulator Figure 13D. Typical Connection for Type B Voltage Regulator...

  • Page 23: Figure 13E. Typical Connection For Donut Type (Un-Mounted) Ct

    Model ATRT-03 (v) Operating Instruction Figure 13E. Typical Connection for Donut Type (un-mounted) CT Figure 13F. Typical Connection for Multi-tap CT...

  • Page 24: Figure 13G. Typical Connection For Bushing-Mount-Ct

    Model ATRT-03 (v) Operating Instruction Figure 13G. Typical Connection for Bushing-Mount-CT (single-phase, 2-winding transformer)

  • Page 25: Figure 13H. Typical Connection For Bushing Mount Cts On Delta Transformer

    Model ATRT-03 (v) Operating Instruction Figure 13H. Typical Connection for Bushing Mount CTs on Delta Transformer...

  • Page 26: Figure 13I. Typical Connection For Bushing Mount Cts On Wye Transformer

    Model ATRT-03 (v) Operating Instruction Figure 13I. Typical Connection for Bushing Mount CTs on Wye Transformer...

  • Page 27: Single-Phase Transformer Test Procedure

    Model ATRT-03 (v) Operating Instruction 14.0 Single-Phase Transformer Test Procedure Table 14-0 shows the steps to test a single-phase transformer (7,200V/480V). Each of the menus is described in detail in the following paragraphs: Table 14-0. Single-Phase Transformer Test Procedure Steps...

  • Page 28: Table 14-0. Single-Phase Transformer Test Procedure Steps (Cont.)

    Model ATRT-03 (v) Operating Instruction Table 14-0. Single-Phase Transformer Test Procedure Steps (cont.) STEP DESCRIPTION DISPLAY ACTION Store reading in buffer KEEP THIS READING? Press key 1 1.YES 2.NO If first time saved TEST SAVED Press any key Clear previous results in PREVIOUS DATA IN BUF.

  • Page 29: Start-Up Menu

    Origin: The “Start-Up” menu first displays after power is applied to the ATRT-03/03A/03B. c. Action Options: Press key 1 to initiate a transformer test.

  • Page 30: Test Transformer Selection Menu

    Press STOP to return to the “Start-Up” menu. Note: 1. The ATRT-03/03A/03B will support 36 “Non-Standard Transformer” type tests. These “Non- Standard Transformer” tests are identified under special test (selection #6 of Figure 14-2). 2. Non-Standard Transformer configurations are shown in Appendix B.

  • Page 31: Transformer Test Procedure Menu

    Model ATRT-03 (v) Operating Instruction 14-3. Transformer Test Procedure Menu STOP BETWEEN PHASES? 1.NO 2.YES Figure 14-3. Transformer Test Procedure Menu a. Description: This menu allows the operator to pause between phases or proceed to the next phase automatically. b. Origin: This menu is displayed after the operator selects the transformer type to be tested.

  • Page 32: Transformer Voltage Name Plate Menu

    Model ATRT-03 (v) Operating Instruction 14-4. Transformer Voltage Name Plate Menu XFMR NAME PLATE VLTG 1.YES 2.NO Figure 14-4. Nameplate Voltage Selection Menu a. Description: This menu allows the operator to use the transformer nameplate voltages to derive a calculated turns ratio. This calculated turns ratio is then used to compare with the measured turns ratio, which produces an error-difference percentage.

  • Page 33: Transformer Voltage Data Entry Menu

    Model ATRT-03 (v) Operating Instruction 14-5. Transformer Voltage Data Entry Menu ENTER H WINDING NAME-PLATE VOLTAGE: Figure 14-5A. H-Winding Voltage Entry Display #1 ENTER H WINDING NAME-PLATE VOLTAGE: 7200V Figure 14-5B. H-Winding Voltage Entry Display #2 ENTER X WINDING NAME-PLATE VOLTAGE: Figure 14-5C.
  • Page 34 Model ATRT-03 (v) Operating Instruction a. Description: This menu allows the user to enter the H and X voltages of the transformer to be used in the turns-ratio calculation. The user must enter the transformer nameplate line voltages. b. Origin: H and X voltage data entry menu will appear if the user has pressed the YES key on the Nameplate Voltage-Selection menu (see Figure 14-4).

  • Page 35: Start Test Menu

    Model ATRT-03 (v) Operating Instruction 14-6. Start Test Menu SINGLE PHASE XFRMER “START” TO RUN TEST “STOP” TO ABORT Figure 14-6. Start Test Menu a. Description: This menu allows the user to start or abort a test. b. Origin: After the user enters the nameplate voltages (see Figure 14-5) or selects NO on the “XFMR NAME PLATE VLTG”...

  • Page 36: Transformer Turns-Ratio Test Result Display

    0.04 Figure 14-7. Test Result Display a. Description: The ATRT-03/03A/03B displays the transformer winding polarity, turns-ratio, excitation current (in milliamps) and turns-ratio error percentage. A typical turns-ratio test-result screen is shown on Figure 14-7 above. The display result is explained below.

  • Page 37: Print Transformer Test Results Menu

    2.NO Figure 14-8. Print Transformer Test Results Menu a. Description: The ATRT-03/03A can print the current test result (displayed on the LCD screen) using the built-in thermal printer. Follow the step below to print test results. b. Origin: Menu appears after operator presses any key from “Transformer Turns-Ratio Test Result Display Menu”...

  • Page 38: Print Transformer Test Results Format Menu

    Figure 14-9. Print Transformer Test Results Format Menu a. Description: The ATRT-03/03A will ask for the report format when the operator first asks for “Print Test Results.” See Figure 14-10 for a typical column format printout. See Figure 14-11 for a detailed format printout.

  • Page 39: Atrt-03/03A Test Result Print Out In Column Format

    Model ATRT-03 (v) Operating Instruction 14-10. ATRT-03/03A Test Result Print Out In Column Format Figure 14-10. Column Format Printout Test Result Print Out is explained below: 1. Test record time and date is printed at the top line of print out.

  • Page 40: Atrt-03/03A Test Result Print Out In Detail Format

    Model ATRT-03 (v) Operating Instruction 14-11. ATRT-03/03A Test Result Print Out In Detail Format Figure 14-11. Detail Format Printout Test Results Print-Out is explained below: 1. Test record time and date is printed at the top line of print out.

  • Page 41: Keep Transformer Ratio Reading Menu

    Description: The user has the option to store the current test result in a scratch pad memory or disregard the current results. After the last test, the ATRT-03/03A/03B will ask if the user wants to store all test results in the scratch pad memory into the FLASH EEPROM.

  • Page 42: Append This Reading Menu

    Wye” test before powering down the unit. The user is now running another “Delta to Wye” test. The ATRT-03/03A/03B will present this menu after the first result displayed. The user can append this new test results to the previous test results still residing in the scratch pad memory.

  • Page 43: Repeat Test Menu

    Model ATRT-03 (v) Operating Instruction 14-14. Repeat Test Menu RUN ANOTHER TEST? 1.YES 2.NO Figure 14-14. Repeat Test Menu a. Description: The user can select to run another test on the transformer or end the current test from this menu.

  • Page 44: Save Test Record Menu

    Figure 14-15. Print Transformer Test Results Menu a. Description: The user can transfer all test results from the scratch pad memory and save these in the FLASH EEPROM. The ATRT-03/03A/03B can store up to 200 test-records in the FLASH EEPROM.

  • Page 45: Record Storage Confirmation Menu

    HAS BEEN SAVED! Figure 14-16. Record Storage Confirmation Menu a. Description: The ATRT-03/03A/03B will assign a test record identification number to each of the records saved in the FLASH EEPROM. b. Origin: Select key 1 from “Save Test Record” menu.

  • Page 46: Three-Phase Transformer Test Procedure Using Nameplate Voltages

    Model ATRT-03 (v) Operating Instruction 15.0 Three-Phase Transformer Test Procedure Using Nameplate Voltages Table 15-1 shows the steps to test a Delta to WYE (12,000/208V) transformer. Table 15-1. Three-Phase Transformer Test Procedure Steps STEP DESCRIPTION DISPLAY ACTION Initiate Transformer Test 1.TEST XFMR...
  • Page 47 Model ATRT-03 (v) Operating Instruction Table 15-1. Three-Phase Transformer Test Procedure Steps (cont.) STEP DESCRIPTION DISPLAY ACTION Select print format PRINT FORMAT Select Column 1.COLUMN format print 2.DETAILED report Store reading in buffer KEEP THIS READING? Press key 1 1.YES 2.NO...

  • Page 48: Print Out Of A Delta-To-Wye Transformer Test In Column Format

    Model ATRT-03 (v) Operating Instruction 15-1. Print Out of a Delta-to-Wye Transformer Test in Column Format Figure 15-1. Delta-to-Wye Column Format Printout Test Result Print Out is explained below: 1. Test record time and date is printed at the top line of print out.

  • Page 49: Running A Special Transformer Test

    Model ATRT-03 (v) Operating Instruction 16.0 Running a Special Transformer Test Table 16-1 shows the steps to test a Dy11 transformer. Table 16-1. Three-Phase Transformer Test Procedure Steps STEP DESCRIPTION DISPLAY ACTION Initiate Transformer Test 1.TEST XFMR 04/12/00 Press key 1 2.SETUP...

  • Page 50: Table 15-1. Three-Phase Transformer Test Procedure Steps (Cont.)

    Model ATRT-03 (v) Operating Instruction Table 16-1. Three-Phase Transformer Test Procedure Steps (cont.) STEP DESCRIPTION DISPLAY ACTION Store reading into the buffer KEEP THIS READING? Press key 1 1YES 2.NO End test RUN ANOTHER TEST? Press key 2 1.YES 2.NO...

  • Page 51: Special Transformer Test Print Out

    Model ATRT-03 (v) Operating Instruction 16-1. Special Transformer Test Print Out Figure 16-1. Special Dy11Transformer Test Print Out...

  • Page 52: Printing Test Record Directory

    Model ATRT-03 (v) Operating Instruction 17.0 Printing Test Record Directory The following steps allow the user to print the directory of the test record stored in FLASH EEPROM. Table 17-1. Print Test Record Directory STEP DESCRIPTION DISPLAY ACTION 1.TEST XFMR 04/12/00 Select “Set Up”...

  • Page 53: Print Test Record Directory Menu

    Model ATRT-03 (v) Operating Instruction 17-2. Print Test Record Directory Menu PRINT DIRECTORY 1.FULL DIRECTORY 2.SHORT DIRECTORY Figure 17-2. Print Directory Menu a. Description: From the “Print Directory” menu, the user can print a short directory or long directory. Short directory selection will print the last 10 record headers in FLASH EEPROM. Long directory selection will print all test record headers in FLASH EEPROM.

  • Page 54: Test Record Directory Print Out

    Model ATRT-03 (v) Operating Instruction 17-3 Test Record Directory Print Out Figure 17-3. Test Record Directory Print Out...

  • Page 55: Restoring A Test Record To Thermal Printer

    Model ATRT-03 (v) Operating Instruction 18.0 Restoring a Test Record to Thermal Printer. The following steps allow the user to restore a test record from FLASH EEPROM to the thermal printer. Table 18-1. Restoring a Test Record to Thermal Printer...

  • Page 56: Test Record Menu

    Model ATRT-03 (v) Operating Instruction 18-1. Test Record Menu 1.RESTORE RECORD 2.DIRECTORY 3.ERASE RECORDS Figure 18-1. Test Record Menu a. Description: From the “Save/Restore” menu, the user can: 1. Restore a test record. 2. Print record directory in FLASH EEPROM.

  • Page 57: Restore Test Record Menu

    Model ATRT-03 (v) Operating Instruction 18-2. Restore Test Record Menu RESTORE RECORD: 1.ENTER RECORD NUMBER 2.SCROLL TO SELECT Figure 18-2. Restore Test Record Menu. a. Description: The user can restore a test record from FLASH EEPROM as follows: 1. Select key 1 to enter a specific record number.

  • Page 58: Restore Test Record Using Record Number

    Model ATRT-03 (v) Operating Instruction 18-3. Restore Test Record Using Record Number RESTORE RECORD NUMBER: “ENTER” TO CONFIRM Figure 18-3. Restore Test Record Menu #2 a. Description: The user can restore a test record from FLASH EEPROM by entering the record number.

  • Page 59: Print /Scroll A Test Record Menu

    NUMBER). Enter record number using key 0-9, Press “ENTER”. c. Action Option: Press key 1 (SCROLL TEST RECORD) to view test record on the LCD. Press key 2 (PRINT TEST RECORD) to output record on to the thermal printer (ATRT-03 and ATRT- 03A only).

  • Page 60: Restore A Test Record To Lcd

    Model ATRT-03 (v) Operating Instruction 19.0 Restore a Test Record to LCD. The following steps allow the user to restore a test record from FLASH EEPROM and to be viewed on LCD. Table 19-1. Restoring a Test Record to LCD...

  • Page 61: Scroll Test Record Menu

    Model ATRT-03 (v) Operating Instruction 19-1. Scroll Test Record Menu: RECORD ID INFO: ONTARIO AIRPORT 220KV EAST Figure 19-1A. Scroll Test Record LCD Display First Screen Note: 1. The second line of the Record ID Info displays the Substation Name.

  • Page 62: Figure 19-1C. Scroll Test Record Lcd Display Third Screen

    Model ATRT-03 (v) Operating Instruction #1 SINGLE PHASE RATIO mA %DIFF +100.00 0.00 0.00 Figure 19-1C. Scroll Test Record LCD Display Third Screen Note: 1. The first line of the screen displays the test number. In the example above, the display is showing the test results from test #1 of the record.

  • Page 63: Print A Test Plan In Memory

    Transformer test plan contains transformer test voltage at different taps. Calculated ratio (derived from transformer voltages) is compared with the tested ratio for a percentage error. A transformer test report containing test plans will show “PASS” or “FAIL” results. Table 20-1. Print A Test Plan from ATRT-03/03A Memory STEP DESCRIPTION...

  • Page 64: Printing Test Plan Menu 1

    Model ATRT-03 (v) Operating Instruction 20-1. Printing Test Plan Menu 1 1.LOAD TEST PLAN 2.UNLOAD TEST PLAN 3.PRN TST PLAN DIR. 4.PRINT TEST PLAN Figure 20-1. Test Plan Menu 1 a. Description: From the “Test Plan” menu, the user can: 1.

  • Page 65: Printing Test Plan Menu 2

    Model ATRT-03 (v) Operating Instruction 20-2. Printing Test Plan Menu 2 PRINT TEST PLAN 1.ENTER PLAN NUMBER 2.SCROLL TO SELECT Figure 20-2. Print Test Plan Menu 2 a. Description: Test plans from the FLASH EEPROM can be printed from this menu. The user can select the Test Plan by entering the Test Plan number or scroll through the directory.

  • Page 66: Printing Test Plan Menu 3

    Model ATRT-03 (v) Operating Instruction 20-3. Printing Test Plan Menu 3 TEST PLAN DIRECTORY “UP” TO SCROLL FWD “DWN” TO SCROLL RVS Figure 20-3. Test Record Menu a. Description: The user scrolls to the selected test plan stored in memory to print.

  • Page 67: Typical Single Phase Voltage Regulator Test Plan Print Out

    Model ATRT-03 (v) Operating Instruction 20-4. Typical Single Phase Voltage Regulator Test Plan Print Out Figure 20-4. Typical Single Phase Voltage Regulator Print Out...

  • Page 68: Typical Three Phase Load Tap Changer Test Plan Print Out

    Model ATRT-03 (v) Operating Instruction 20-5. Typical Three Phase Load Tap Changer Test Plan Print Out Figure 20-5. Typical Three Phase Load Tap Changer Test Plan Print Out...

  • Page 69: Typical Wye To Delta Test Plan Print Out

    Model ATRT-03 (v) Operating Instruction 20-6. Typical Wye to Delta Test Plan Print Out Figure 20-6. Typical Wye to Delta Test Plan Print Out...

  • Page 70: Load A Test Plan From Memory

    Calculated ratio (derived from transformer voltages) is then compared with tested ratio for percentage error. A test report using test plan shows “PASS” or “FAIL” results. Table 21-1. Load A Test Plan from ATRT-03/03A/03B Memory STEP DESCRIPTION...

  • Page 71: Load Test Plan Menu

    2.SCROLL TO SELECT Figure 21-1. Test Record Menu a. Description: The ATRT-03/03A/03B Test Plan from FLASH EEPROM is loaded to memory to be used for testing a transformer. The user can select the Test Plan by entering Test Plan number or Scroll through the directory.

  • Page 72: Test A Transformer Using A Test Plan

    Model ATRT-03 (v) Operating Instruction 22.0 Test a Transformer Using a Test Plan. Table 22-1 shows the steps to test a single-phase transformer. Each of the menus is described in detail in the following paragraphs: Table 22-1. Test a Transformer Using a Test Plan...

  • Page 73: Table 22-1. Test A Transformer Using A Test Plan (Cont.)

    Model ATRT-03 (v) Operating Instruction Table 22-1. Test a Transformer Using a Test Plan (cont.) STEP DESCRIPTION DISPLAY ACTION Observe ratio, excitation RATIO %DIFF None current and percentage error +26.615 0001 0.19 P Go to next screen RATIO %DIFF Press any key +26.615...

  • Page 74: Test Plan Identification Menu

    Model ATRT-03 (v) Operating Instruction 22-1. Test Plan Identification Menu 2 SNG PHS TAPS:2 12 445 JUST A TEST Figure 22-1. Test Plan Identification Menu a. Description: Test plan identification screen shows transformer type, transformer manufacturer, transformer model, number of test on test plan and special note from the user.

  • Page 75: Test Plan Loaded In Memory Menu

    Model ATRT-03 (v) Operating Instruction 22-2. Test Plan Loaded in Memory Menu 2 SNG PHS TAPS:2 TEST PLAN LOADED 1.CONTINUE 2.UNLOAD TEST PLAN Figure 22-2. Test Plan Loaded in Memory Menu a. Description: This menu indicates that Test Plan #2 is loaded in memory.

  • Page 76: Test Result Display Using Test Plan

    Description: This display shows the measured transformer ratio, excitation current, percentage error and “PASS/FAIL” condition of this test. b. Origin: This menu is shown after the ATRT-03/03A/03B ran a test. c. Action Option: Press any key to advance to next test.

  • Page 77: Test Result Print Out Using Test Plan

    Model ATRT-03 (v) Operating Instruction 22-4. Test Result Print Out Using Test Plan Figure 22-4. Test Result Print Out of a Single Phase Transformer Test Using Test Plan Note: “PASS” and “FAIL” status is shown as “P” or “F” next to the “%DIFF” printout.

  • Page 78: Change Atrt-03/03A/03B Real Time Clock

    Model ATRT-03 (v) Operating Instruction 23.0 Change ATRT-03/03A/03B Real Time Clock The following steps show how to change the ATRT-03/03A/03B real time clock. Table 23-1. Change ATRT-03/03A/03B Real Time Clock STEP DESCRIPTION DISPLAY ACTION 1.TEST XFMR 04/12/00 Select “Set Up” menu Press key 2 2.SETUP...

  • Page 79: Set Time And Date

    HH:MM:SS Figure 23-2. Time and Date Display a. Description: The ATRT-03/03A/03B has a real time clock powered with a back-up battery. The ATRT-03/03A/03B displays the current time and date in the upper right of the “Start-Up” menu screen (see Figure 14-1).

  • Page 80: Enable Computer Interface

    Model ATRT-03 (v) Operating Instruction 24.0 Enable Computer Interface The following steps will put the ATRT-03 under computer interface mode. Table 24-1. Change ATRT-03/03A/03B Real Time Clock STEP DESCRIPTION DISPLAY ACTION 1.TEST XFMR 04/12/00 Select “Set Up” menu Press key 2 2.SETUP...

  • Page 81: Atrt-03/03A/03B Computer Interface Menu

    RS-232C port. In this mode, the Transformer Analysis software (provided with the ATRT-03/03A/03B) allows the user to control the ATRT-03 from a PC. Using this software, the user can transfer test records stored in the ATRT-03/03A/03B FLASH EEPROM to a PC or store transformer test plan into ATRT-03/03A/03B memory.

  • Page 82: Entering Transformer Identification For Test Record Menu

    Model ATRT-03 (v) Operating Instruction 25.0 Entering Transformer Identification for Test Record Menu The following steps allow the user to enter transformer identification for test record. Table 25-1. Enter Transformer Identification for Test Record STEP DESCRIPTION DISPLAY ACTION 1.TEST XFMR 04/12/00 Select “Set Up”...

  • Page 83: Table 25-1. Enter Transformer Identification For Test Record (Cont.)

    Model ATRT-03 (v) Operating Instruction Table 25-1. Enter Transformer Identification for Test Record (cont.) STEP DESCRIPTION DISPLAY ACTION Enter Transformer Model MODEL: Use 0-9 keys to enter Transformer model. Use “Enter” key to confirm. Enter Transformer Serial Number SERIAL NUMBER:...

  • Page 84: Atrt-03/03B Test Voltage Selections

    Note: 1. The ATRT-03/03B will default to 40 Vac test voltage when power is first applied to the unit. Once the new test voltage is selected, this voltage will be active until a new voltage is selected.

  • Page 85: Test Voltage Selection

    1. The ATRT-03, ATRT-03B will always default to 40 Vac test voltage when power is first applied to the unit. 2. The ATRT-03B uses 20 Vac test voltage generated by an internal oscillator. 3. After new voltage is selected, the ATRT-03/03B will use this voltage until a new test voltage is selected.

  • Page 86: Atrt-03/03A/03B Cable Test

    Model ATRT-03 (v) Operating Instruction 27.0 ATRT-03/03A/03B Cable Test The following steps allow the user to run diagnostics on the ATRT-03/03A/03B cables. Table 27-1. ATRT-03/03A/03B Cable Diagnostic STEP DESCRIPTION DISPLAY ACTION Select “Diagnostic” menu 1.TEST XFMR 04/12/00 Press key 4 2.SETUP...

  • Page 87: Atrt-03/03A/03B Verification Test

    Model ATRT-03 (v) Operating Instruction 28.0 ATRT-03/03A/03B Verification Test The following steps allow the user to run verification test on the ATRT-03/03A/03B electronics. Table 28-1. ATRT-03/03A/03B Verification Test STEP DESCRIPTION DISPLAY ACTION 1.TEST XFMR 04/12/00 Select “Diagnostic” menu Press key 4 2.SETUP...
  • Page 88 Model ATRT-03 (v) Operating Instruction APPENDEX A Table of Standard Transformers...
  • Page 89 Model ATRT-03 (v) Operating Instruction APPENDIX B Table of Non-Standard Transformers...
  • Page 90 Model ATRT-03 (v) Operating Instruction APPENDIX B Table of Non-Standard Transformers (cont.)
  • Page 91 Model ATRT-03 (v) Operating Instruction APPENDIX B Table of Non-Standard Transformers (cont.)
  • Page 92 Model ATRT-03 (v) Operating Instruction APPENDIX B Table of Non-Standard Transformers (cont.)
  • Page 93 Model ATRT-03 (v) Operating Instruction 1710 Grevillea Court, Ontario, CA 91761, USA Phone: 909-923-9390 Fax: 909-923-9391 Website: http//www.vanguard-instruments.com...

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