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Mie12110-t2000 Introductory Guide

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Introductory guide

Text of Mie12110-t2000 Introductory Guide

  • DATE: 20/04/2011

    DOC.MIE12110 REV.4

    T 2000

    INTRODUCTORY GUIDE

  • DOC. MIE12210 Rev. 4 Page 2 of 86

    REVISIONS SUMMARY VISA N PAGE DATE 1 All 25/04/2006 Issued Lodi.

    2 39 to 43 8/06/2006 Added the Calibration chapter

    Lodi

    3 All 23/11/2009 Minor corrections Lodi

    4 71, 72 20/4/2011 Modified for the firmware revision 1.40

    Lodi

  • DOC. MIE12210 Rev. 4 Page 3 of 86

    SHORT FOREWORD .......................................................................................................5

    INTRODUCTION ................................................................................................................6

    1 TEST SET DESCRIPTION AND USE ...................................................................9

    1.1 THE FRONT PANEL..................................................................................................... 9 1.2 THE POP-UP MENU.................................................................................................. 12

    1.2.1 Transformers selection.................................................................... 13 1.3 POWER-ON................................................................................................................ 18 1.4 OUTPUTS DESCRIPTION AND HAZARDOUS SITUATIONS.......................... 20

    1.4.1 Main current and voltage outputs ........................................... 20 1.4.2 HV voltage output ............................................................................... 22 1.4.3 Hazardous situation summary .................................................. 23

    1.5 CURRENT GENERATION ......................................................................................... 24 1.6 OPTIONAL THERMAL PRINTER ............................................................................. 27 1.7 PROTECTIONS .......................................................................................................... 27

    2 TRANSFORMERS TESTING FUNDAMENTALS .......................................... 30

    2.1 CURRENT TRANSFORMERS ................................................................................... 30 2.2 REMANENCE .............................................................................................................. 31 2.3 HIGH CURRENT TESTS .......................................................................................... 31 2.4 WINDING RESISTANCE TEST.............................................................................. 31

    3 WHATS INSIDE? ...................................................................................................... 33

    3.1 PHYSICAL DESCRIPTION...................................................................................... 33 3.2 DETAILED FUNCTION DESCRIPTION................................................................. 37

    3.2.1 Main output transformer, XTF10350 (5) ............................ 37 3.2.2 Main front board PWA11411 (17) ............................................ 38 3.2.3 TRANSFORMERS board PWA21412 (83)............................... 38 3.2.4 CONV-T 3000 board PWA21401 (16)..................................... 39 3.2.5 INTE ON-OFF T 3000 board PWA11410 (7) ....................... 40 3.2.6 MICR T1000 board PWA41300 (15)........................................ 40

    4 THE HELL, IT DOESNT WORK.......................................................................... 42

    4.1 INTRODUCTION ....................................................................................................... 42 4.2 ERROR MESSAGES.................................................................................................. 42 4.3 TROUBLE SHOOTING ............................................................................................. 46 4.4 AT POWER-ON DOES NOT TURN ON ................................................................. 47 4.5 NO OUTPUT FROM THE MAIN CURRENT AND VOLTAGE............................... 48 4.6 THE AC VOLTAGE MEASUREMENT IS NOT STABLE ...................................... 48 4.7 PROBLEMS DURING UPGRADE ............................................................................ 48 4.8 FALSE ALARM OF MISSING GROUND CONNECTION .................................... 49

  • DOC. MIE12210 Rev. 4 Page 4 of 86

    4.9 THE DISPLAY BACKLIGHT DOES NOT TURN ON OR THE DISPLAY DOES NOT OPERATE ....................................................................................................... 49 4.10 A 110 V RATED TEST SET WAS POWERED AT 220 V.............................. 51 4.11 THE TEST SET DOES NOT COMMUNICATE WITH THE PC ........................ 53 4.12 FAULT ON THE 10 V OR 600 V EXTERNAL MEASUREMENT..................... 55 4.13 FAULT ON THE 10 A EXTERNAL MEASUREMENT ......................................... 65 4.14 FAULT ON THE REAL TIME CLOCK................................................................... 69 4.15 THE ENCODER IS BROKEN ................................................................................ 70 4.16 UPGRADE TO FIRMWARE REVISION 1.40 .................................................... 71 4.17 THE FAULT CANNOT BE FIXED ......................................................................... 73

    5 CALIBRATION............................................................................................................. 77

    5.1 INTRODUCTION ...................................................................................................... 77 5.2 CALIBRATION PROCEDURE ................................................................................ 77 5.3 T 2000 OUTPUT CALIBRATION......................................................................... 79

    5.3.1 OUTPUT CURRENTS CALIBRATION ............................................ 79 5.3.2 OUTPUT VOLTAGES CALIBRATION ............................................. 80

    5.4 EXTERNAL INPUT CURRENTS......................................................................... 82 5.5 EXTERNAL INPUT VOLTAGES ........................................................................ 84

    APPENDIX 1 SPARE PARTS LIST ........................................................................ 86

  • DOC. MIE12210 Rev. 4 Page 5 of 86

    SHORT FOREWORD

    Dear T 2000 user, I often wondered why the users manual is not very much used, even if it includes valuable information. As me too I am a user of such manuals, the answer I have given myself is that valuable information are concealed somewhere in the thick thing, and I do not have time to waste to find it. So, either the manual is actually of help, or I ignore it. This is why I decided to split the T 2000 manual in three: specification, with all performance details; application manual, with instructions about how to use it one its operation is understood; introductory guide, with the device description and basic information. The idea is that you may read once the device description, while you need application examples more than once; so, why not to split the manual in three? The only exception to this organization is next page: it reminds to be cautious when using these test sets. We are on the field since more than 50 years, and no injury has ever been reported; yet, your kids want you back home after work. Have a good work with T 2000! Primo Lodi Q&A Manager

  • DOC. MIE12210 Rev. 4 Page 6 of 86

    INTRODUCTION

    T 2000 allows performing all the test to be performed on current and voltage transformers. The following table lists the tests that can be performed on CT and VT.

    N. TEST OF

    TEST DESCRIPTION

    1 CT Ratio, Voltage mode 2 CT Ratio, polarity and burden 3 CT Burden; secondary side 4 CT Excitation curve 5 CT Winding or burden resistance 6 CT Voltage withstand 7 CT Polarity by impulses 8 VT Ratio; polarity 9 VT Burden, secondary side 10 VT Ratio, electronic transformers 11 VT Voltage withstand 12 VT Secondary over-current protection 13 PT Ratio per TAP 14 PT Resistance of Tap Changer

    contacts 15 PT Tap Changer dynamic resistance

    test 16 R Ground resistance and resistivity

    With external options, T 2000 can test: . With the High IDC module, up to 400 A: contact resistances, in the micro-Ohm range; . With the high current booster: primary tests, up to 2000 A; . With the very high current booster: primary tests, up to 4000 A. The basic T 2000 function is to generate current and voltages, as requested by the type of test to be performed, that is selected on the LCD screen by means of the multi-function knob. Test results are kept in memory, and can be transferred to a PC at a later time, along with settings.

  • DOC. MIE12210 Rev. 4 Page 7 of 86

    The instrument contains one generator with many outputs: High AC current; Low AC current; Low DC current; Current impulses; High AC voltage; Low AC voltage; Low DC voltage. All outputs are adjustable and metered on the large, graphic LCD display. With the multi-purpose knob and the LCD display it is possible to enter the MENU mode, that allows to set many functions, that make T 2000 a very powerful testing device, with manual and semi-automatic testing capabilities, and with the possibility to transfer test results to a PC via the RS232 interface. These results can be recorded, displayed and analysed by the powerful TDMS software, which allows creating a data base of test results for all the plant. The ease of operation has been the first goal of T 2000: this is why the LCD is graphic, and so large. With it, the dialogue in MENU mode is made easy. Besides, all T 2000 outputs relevant to the selected test are continuously measured, and output values are displayed, with