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IBEKO POWER DV-Power TRT3A Manual

Three phase transformer turns ratio tester
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TRT33A
T H R E E
P H A S E
T R A N S F O R M E R
T U R N S
R A T I O
T E S T E R
Manual
IBEKO P
AB
OWER

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Summary of Contents for IBEKO POWER DV-Power TRT3A

  • Page 1 TRT33A T H R E E P H A S E T R A N S F O R M E R T U R N S R A T I O T E S T E R Manual IBEKO P OWER...

  • Page 2: Table Of Contents

    IBEKO Power AB explicitly exonerates itself from all liability for mistakes in this Manual. IBEKO Power AB translates this Manual from its source language English into a number of other languages. Any translation of this Manual is done for local requirements, and in the event of a dispute between the English and any...

  • Page 3: Introduction

    TRT33A Introduction Introduction This Manual contains helpful instructions on how to use TRT33A in a safe, proper and efficient way. Following these instructions can help you to avoid dangerous situations, repair costs and other miss happenings due to incorrect operation. Furthermore it ensures the reliability and life cycle of your TRT33A.

  • Page 4: Safety Instructions

    TRT33A Safety Instructions Safety Instructions Safety is the responsibility of the user. Before operating TRT33A, please read carefully the following safety instructions. It is not recommended that the TRT33A is used (or even turned on) without the understanding of this Manual.
  • Page 5 • If TRT33A is opened by the customer, all guarantees are invalidated. • If TRT33A seems to be functioning improperly, please contact the IBEKO POWER AB (refer to section ”Manufacturer Contact Information”), after first checking the section Error Messages. •...

  • Page 6: Designated Use

    TRT33A Designated Use Designated Use The Three-phase Transformer Turns Ratio Tester TRT33A is specially designed for turns ratio, phase shift and excitation current measurement of power, distribution and instrument transformers. The TRT33A generates single-phase and true three phase test voltage. When generating a single phase excitation voltage, the TRT33A generates and outputs an excitation test voltage to the three transformer primary windings, in turn.

  • Page 7: Description

    TRT33A Description Description Front Panel Components UP/DOWN navigate and set Figure 4-1: HV connector Front panel Alphanumeric keypad test parameters Display components to enter numerical value to start START to scroll connector TC CONTROL unit the test between main control Tap changer menus to stop STOP...
  • Page 8 TRT33A Description Red LED • Lights continuously in case of operational error. • Lights continuously when test is started and test voltage is applied. Mains power and connectors Connector for mains power supply Figure 4-2: Mains power Power switch and connectors I In this position, TRT33A is connected to the mains power supply.
  • Page 9 TRT33A Description Figure 4-5: The SET TIME AND DATE menu Pressing to confirm returns you to the SETTINGS menu. ENTER Pressing to cancel returns you to one of the two main menus or to the SET TIME AND DATE STOP menu if the change is still active.
  • Page 10 TRT33A Description Figure 4-10: Choosing test voltage in SET menu Figure 4-11: Ready for test After the results for the first channel are displayed, the display shows that the TRT is ready for the next channel to be accuracy controlled. The measuring results are displayed after each channel is accuracy controlled.

  • Page 11: Getting Started

    TRT33A Getting Started Getting Started Connecting a Test Object to the TRT33A Before you connect a test object to the TRT33A, make sure that:  The test object is disconnected or separated from its circuit in accordance with the national safety regulations and is properly grounded to protective earth.
  • Page 12 TRT33A Getting Started  If the primarily neutral connection does not exist, the 1N (H0; N) lead is left separate from transformer and other connections leads. It must be placed in such a way to isolate it from other connections or earth. Primarily pay attention that there is no possibility any personnel can touch it! ...
  • Page 13 TRT33A Getting Started 5.1.2 Three-phase transformer Perform the following setup procedure for three-phase transformers:  Connect the ground lead of the test set to a low-impedance earth ground.  Connect the H and X test cables to the corresponding H and X connectors of the TRT33A. ...
  • Page 14 TRT33A Getting Started 5.1.3 Current transformer Testing The largest number of windings are on the „‟X‟‟ or “S” (secondary) side of the current transformer. The primary has only one or two turns, or you have to make one using the test cables. Therefore, when testing current transformer the „‟H”...
  • Page 15 TRT33A Getting Started Figure 5-6: Connection of the single phase autotransformer To test a three-phase autotransformer, perform the following setup procedure:  Connect the ground lead of the test set to a low-impedance earth ground.  Connect the H and X test cables to the corresponding H and X connectors of the TRT33A. ...
  • Page 16 TRT33A Getting Started Note: The TRT33A protects against a wrong hook-up to a transformer (see section 7, Error messages). Setting the Measurement Parameters Directly after the first message on the display, the TRT33A automatically changes to the CONFIGURATION menu and the green LED lights up. By pressing you can switch between CONFIGURATION menu and MEMORY menu.
  • Page 17 TRT33A Getting Started The next display is a selection of the test voltage. The following values can be chosen for the test voltages: 1 V, 8 V, 40 V and 100 V AC. Applied test voltage is single-phase test voltage (see figure and table below). Test voltages of 1 V and 8 V are recommended for testing current transformers.
  • Page 18 TRT33A Getting Started Test Record can contain results of all tap changer positions, or complete results obtained on one transformer. Note: Manual selection of record/reading will delete results from existing memory locations. Once these parameters are defined, press to change to the READY state. ENTER Figure 5-12: The READY state...
  • Page 19 TRT33A Getting Started 5.2.2 Measurement on three-phase transformers After all connections have been made, choose an appropriate transformer vector group in the CONFIGURATION menu. You can also select TRUE 3~ TEST if you want to test ratio by applying true three-phase test voltage.
  • Page 20 TRT33A Getting Started When generating true three phase test voltage, the TRT33A generates and outputs a true three-phase excitation test voltage to three transformer primary windings. The induced three phase voltage across the unloaded transformer windings are measured and the transformer turns ratio is calculated. Figure 5-18: The test voltage selection...
  • Page 21 TRT33A Getting Started Figure 5-20: Three-phase cable set Once the memory location, HV and LV name plate voltages, and the test voltage are defined, press to change to the READY state. ENTER Figure 5-21: The READY state before the test If one of these values has to be changed, press to return to a previous menu.
  • Page 22 TRT33A Getting Started Figure 5-24: Possible vector group When possible vector group is selected, the TRT33A asks to confirm selection. Figure 5-25: Confirm detected vector group Undetected vector groups If it is impossible, either because of some problems inside the transformer under test or due to wrong cable/clamp connections, for the TRT33A to detect vector group correctly, the message “Unable to detect vector group”...
  • Page 23 TRT33A Getting Started If any key is pressed, the following message will be displayed: Figure 5-29: Testing next tap To perform test on the next tap position press YES, or complete the test by selecting NO option. If you choose NO, the device will complete the test, save results in current Test Record, and CONFIGURATION menu will be displayed.
  • Page 24 TRT33A Getting Started The next step is to enter nameplate voltage values or memory location. To confirm the selection press and proceed to the READY state (Figure 5-21). ENTER 5.2.3.2 Measurement on Three-phase Autotransformers Press to choose a configuration in the CONFIG field of the AUTOTRANSFORMER menu. To UP/DOWN Available autotransformer...
  • Page 25 Accuracy Accuracies defined below are valid at 20 C ambient temperature and for results obtained using standard test cables supplied by IBEKO Power. 5.3.1 Typical accuracies of TRT33A Typical Ratio Accuracy is given in the table 9: Table 9: Typical Ratio Accuracy...
  • Page 26 TRT33A Getting Started Figure 5-33: The MEM menu showing the previously saved test results The test results from actual reading, from the MEM menu can be printed by pressing on PRINT Press simultaneously to print all measurements from actual Test Record. START+PRINT Deleting Results In the MEM menu, press...
  • Page 27 TRT33A Getting Started If you want to delete specific Test Records, choose CLEAR TEST RECORDS and enter desired range to be deleted. Press to scroll between FROM and TO positions. The results that are located in the range between these locations, including the two selected locations, will be deleted. Figure 5-35: Delete specific range of Test Records from memory...
  • Page 28 TRT33A Getting Started 5.7. Tap Changer Control Unit The external Tap Changer Remote cable is used for convenient tap changer testing. After the TRT33A has measured a tap, if you choose to test next tap position, it stands by waiting for the operator to move the transformer tap changer to the next tap position and continue the measurement by entering a new name plate voltages.
  • Page 29 TRT33A Getting Started External data exporting to USB flash drive To export the data from internal memory of TRT33A device to the USB flash drive, plug in the USB flash drive into the TRT33A device and press button. The TRT33A will display the USB flash drive PRINT menu is it is shown on the screen below.
  • Page 30 TRT33A Getting Started 5.9. Allowed external signal power levels Figure 5-43: Maximum allowed external voltages Maximum voltage 264 V AC Maximum voltage 0 V AC Maximum voltage 0 V AC Maximum voltage 0 V AC Note: You must not apply any external, active signal power to the H and X connectors. Uncontrolled signal to the connector can damage it.

  • Page 31: Dv-Win Software

    TRT33A DV-Win Software DV-Win Software DV-Win is a Windows program for working with Transformer Turns ratio Tester TRT33A. It enables the two-way communication TRT33A to a PC over the USB. DV-Win supports the following functions:  Controlling and starting TRT33A when the tests are performed from the PC; the results could be stored to PC;...
  • Page 32 TRT33A DV-Win Software Starting DV-Win Connect the USB port of the TRT33A Transformer Turns Ratio Tester and the PC, using a serial cable. Turn TRT33A on. Start DV-Win: - Click on ”Start”, - Click on ”Programs”, - Click on ''DV-Win‟‟, or double click at icon on the desktop.
  • Page 33 TRT33A DV-Win Software Test info Test object Test object field is intended to store test results in a database, so it can be later recalled to be analyzed and compared with previous test results. Test information In this field the operator can enter basic information about the operator, supervisor and the Job ID of a certain test.
  • Page 34 TRT33A DV-Win Software All tests are stored in the internal memory of the device. Once the test is finished, the device automatically switches to next memory location. If you want to set particular location where the test is to be stored, you can do it by choosing Tools → Options → Settings. The new window will come up, and you can set particular memory location.
  • Page 35 TRT33A DV-Win Software When the tap is changed, press OK to test the next tap changer position. Repeat this procedure until you get results in all tap changer positions. Once you have obtained all results you want, just press “No” when asked “Test Next tap changer position?” The test will be stopped. Make report Once the measurement is completed click on the Make report button to save results.
  • Page 36 TRT33A DV-Win Software In the Report sections, user can enter title of the report, and can choose which of the previously entered information will be visible in the report. Once all the information have been entered, click Refresh report button to refresh the report and to preview it. When the report is done, user can save it as PDF, XLS, DOC or RTF file, by clicking on the Export report button.
  • Page 37 TRT33A DV-Win Software Download With this command the results from the internal TRT33A memory can be transferred to the PC. The transfer is possible only if the serial port TRT33A is connected, with the appropriate cable, to the PC. The results which user wants to transfer from the TRT33A memory to the PC can be selected according to following criterion: All the test results are being transferred from the internal TRT33A memory to the PC.
  • Page 38 TRT33A DV-Win Software Date range After choosing this option, a new window appears. It provides a choice to select a time- interval when the measurement was done. The results obtained during the time period between the chosen dates, including the chosen dates, are going to be transferred to the PC.
  • Page 39 TRT33A DV-Win Software The results table The results from internal memory of TRT33A are transferred to the PC in the data table; the following layout will be displayed: - Date and Time: the date and the time of the test - Memory location: the Test Record and the Test Reading positions of saved results - Vector group:...

  • Page 40: Error Messages

    TRT33A Error Messages Error Messages Any operational error is indicated by a red LED and accompanied by a sound alarm. Furthermore, the display indicates an error status message. To remove the status message on the display, and return to the main menu, press STOP If abnormal operating conditions occur during transformer testing, the following error messages will appear on the test.
  • Page 41 TRT33A Error Messages Error Message "Malfunction" In case of some internal error, the TRT33A will display massage “Malfunction”. In this case restart the TRT33A device. AB (refer to section ”Manufacturer Contact If the error occurs repeatedly, please contact IBEKO P OWER Information”).

  • Page 42: Troubleshooting

    TRT33A Troubleshooting Troubleshooting In case when the operator experiences problems with wrong results while measuring a three-phase transformer, we recommend performing the steps listed below: 1. Check that all connections to the transformer side are properly done. If everything is OK and you still have wrong results, continue with the next 3 steps.

  • Page 43: Technical Data

    TRT33A Technical Data Technical Data Mains Power Supply - Voltage: 110 - 230 V AC - Frequency: 50 - 60 Hz - Input power: 200 VA - Fuse: 2 A / 250 V, type F Output data - Test Voltage 1 V AC, 8 V AC, 40 V AC, 100 V AC 3 x (1, 8, 40, 100)3 V AC - Ratio Measuring Range...

  • Page 44: Accessories

    TRT33A Accessories, Manufacturer Contact Information 9.9 Electromagnetic Compatibility (EMC) - CE conformity EMC directive 2004/108/EC - Emission EN 61326-1 - Interference Immunity EN 61326-1 9.10 USB Interface - TRT33A is equipped with an USB serial interface to connect to an external computer. Figure 9-1: USB Flash drive Accessories...
  • Page 45 TRT33A Vector Groups IEC Single-phase test of three-phase transformers IEC Table of vector group connections (IEC) Winding connections Tested winding Short Vector Calculated Connections Phase Limb circuit group HV winding XV winding HV winding XV winding ratio 1ø 1ø 1.1-1.2 2.1-2.2 1ph0 1ø...
  • Page 46 TRT33A Vector Groups IEC Table of vector group connections (IEC) Winding connections Tested winding Short Vector Calculated Connections Phase Limb circuit group HV winding XV winding HV winding XV winding ratio 1U-1N 2N-2U YNyn6 1V-1N 2N-2V 1W-1N 2N-2W I+II+III 1V-1W 1U-(1V+1W) 2U-2V ...
  • Page 47 TRT33A Vector Groups IEC Table of vector group connections (IEC) Winding connections Tested winding Short Vector Calculated Connections Phase Limb circuit group HV winding XV winding HV winding XV winding ratio 1U-1N 2U-2W YNd11 1V-1N 2V-2U  1W-1N 2W-2V I+II+III 1V-1W 1U-(1V+1W) 2U-2V...
  • Page 48 TRT33A Vector Groups IEC Table of vector group connections (IEC) Winding connections Tested winding Short Vector Calculated Connections Phase Limb circuit group HV winding XV winding HV winding XV winding ratio U  II+I 1V-1U 2U-2N YNzn5 III+II 1W-1V 2V-2N I+III 1U-1W 2W-2N...
  • Page 49 TRT33A Vector Groups IEC Table of vector group connections (IEC) Winding connections Tested winding Short Vector Calculated Connections Phase Limb circuit group HV winding XV winding HV winding XV winding ratio U  II+I 1V-1U 2N-2U YNzn1 III+II 1W-1V 2N-2V I+III 1U-1W 2N-2W...
  • Page 50 TRT33A Vector Groups IEC Table of vector group connections (IEC) Winding connections Tested winding Short Vector Calculated Connections Phase Limb circuit group HV winding XV winding HV winding XV winding ratio U  1V-1U 2V-2N Dyn1 1W-1V 2W-2N 1U-1W 2U-2N U ...
  • Page 51 TRT33A Vector Groups IEC Table of vector group connections (IEC) Winding connections Tested winding Short Vector Calculated Connections Phase Limb circuit group HV winding XV winding HV winding XV winding ratio U  I (II) 1V-1U 2W-2N Dyn9 II (III) 1W-1V 2U-2N III (I)
  • Page 52 TRT33A Vector Groups IEC Table of vector group connections (IEC) Winding connections Tested winding Short Vector Calculated Connections Phase Limb circuit group HV winding XV winding HV winding XV winding ratio U  I+III 1V-1W 1U-(1V+1W) 2W-2N Dzn4 I+II 1W-1U 1V-(1W+1U) 2U-2N II+III...
  • Page 53 TRT33A Vector Groups IEC Table of vector group connections (IEC) Winding connections Tested winding Short Vector Calculated Connections Phase Limb circuit group HV winding XV winding HV winding XV winding ratio I+II 1U-1W 1V-1U 2U-2V  II+III 1V-1U 1W-1V 2V-2W III+I 1W-1V 1U-1W...
  • Page 54 TRT33A Vector Groups IEC Table of vector group connections (IEC) Winding connections Tested winding Short Vector Calculated Connections Phase Limb circuit group HV winding XV winding HV winding XV winding ratio 1U-1V 2U-2V 1V-1W 2V-2W 1W-1U 2W-2U I+III 1V-1W 1U-1N 2U-2V ...
  • Page 55 TRT33A Vector Groups IEC Table of vector group connections -autotransformers (IEC) Tested winding Short Vector Calculated Winding connections Connections Phase Limb circuit group HV winding XV winding ratio I+II 1U-1V 2U-2V II+III 1V-1W 2V-2W III+I 1W-1U 2W-2U 1V 2V 1U-1N 2U-2N YNa0 1V-1N...
  • Page 56 TRT33A Vector Groups ANSI Single-phase test of three-phase transformers ANSI Table of vector group connections (ANSI) Winding connections Tested winding Short Vector Calculated Connections Phase Limb circuit group HV winding XV winding HV winding XV winding ratio 1ø 1ø H1-H2 X1-X2 1ph0 1ø...
  • Page 57 TRT33A Vector Groups ANSI Table of vector group connections (ANSI) Winding connections Tested winding Short Vector Calculated Connections Phase Limb circuit group HV winding XV winding HV winding XV winding ratio H1-H0 X0-X1 YNyn6 H2-H0 X0-X2 H3-H0 X0-X3 I+II+III H2-H3 H1-(H2+H3) X1-X2 ...
  • Page 58 TRT33A Vector Groups ANSI Table of vector group connections (ANSI) Winding connections Tested winding Short Vector Calculated Connections Phase Limb circuit group HV winding XV winding HV winding XV winding ratio H1-H0 X1-X3 YNd11 H2-H0 X2-X1  H3-H0 X3-X2 I+II+III H2-H3 H1-(H2+H3) X1-X2...
  • Page 59 TRT33A Vector Groups ANSI Table of vector group connections (ANSI) Winding connections Tested winding Short Vector Calculated Connections Phase Limb circuit group HV winding XV winding HV winding XV winding ratio  II+I 1V-1U 2U-2N YNzn5 III+II 1W-1V 2V-2N I+III 1U-1W 2W-2N I+II+III...
  • Page 60 TRT33A Vector Groups ANSI Table of vector group connections (ANSI) Winding connections Tested winding Short Vector Calculated Connections Phase Limb circuit group HV winding XV winding HV winding XV winding ratio  II+I H2-H1 X0-X1 34 YNzn11 III+II H3-H2 X0-X2 I+III H1-H3 X0-X3...
  • Page 61 TRT33A Vector Groups ANSI  H2-H1 X2-X0 Dyn1 H3-H2 X3-X0 H1-H3 X1-X0  H3-H2 H1-(H3+H2) X1-X2 H1-H3 H2-(H1+H3) X2-X3 H2-H1 H3-(H2+H1) X3-X1  I (II) H2-H1 X0-X3 Dyn3 II (III) H3-H2 X0-X1 III (I) H1-H3 X0-X2  I+III H3-H2 H1-(H3+H2) X3-X2 I+II H1-H3...
  • Page 62 TRT33A Vector Groups ANSI  I (II) H2-H1 X3-X0 Dyn9 II (III) H3-H2 X1-X0 III (I) H1-H3 X2-X0  I+III H3-H2 H1-(H3+H2) X2-X3 Dy11 I+II H1-H3 H2-(H1+H3) X3-X1 II+III H2-H1 H3-(H2+H1) X1-X2  H2-H1 X0-X1 Dyn11 H3-H2 X0-X2 H1-H3 X0-X3 H2-H1 X2-X1 H3-H2...
  • Page 63 TRT33A Vector Groups ANSI Table of vector group connections (ANSI) Winding connections Tested winding Short Vector Calculated Connections Phase Limb circuit group HV winding XV winding HV winding XV winding ratio V  I+III H2-H3 H1-(H2+H3) X3-X0 Dzn4 I+II H3-H1 H2-(H3+H1) X1-X0 II+III...
  • Page 64 TRT33A Vector Groups ANSI Table of vector group connections (ANSI) Winding connections Tested winding Short Vector Calculated Connections Phase Limb circuit group HV winding XV winding HV winding XV winding ratio I+II H1-H3 H2-(H1+H3) X1-X2  II+III H2-H1 H3-(H2+H1) X2-X3 III+I H3-H2 H1-(H3+H2)
  • Page 65 TRT33A Vector Groups ANSI Table of vector group connections (ANSI) Winding connections Tested winding Short Vector Calculated Connections Phase Limb circuit group HV winding XV winding ratio H1-H2 X1-X2 H2-H3 X2-X3 H3-H1 X3-X1 I+III H2-H3 H1-H0 X1-X2  ZNd0 II+I H3-H1 H2-H0 X2-X3...
  • Page 66 TRT33A Vector Groups ANSI Table of vector group connections (ANSI) Winding connections Tested winding Short Vector Calculated Connections Phase Limb circuit group HV winding XV winding ratio I+II H1-H2 X1-X2 II+III H2-H3 X2-X3 III+I H3-H1 X3-X1 H1-H0 X1-X0 YNa0 H2-H0 X2-X0 H3-H0 X3-X0...

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