Vanguard EZCT-2000 User Manual download pdf (Page 3)

REV 3 EZCT-2000 USER’S MANUAL

TABLE OF CONTENTS

CONVENTIONS USED IN THIS DOCUMENT ....................................................................... 1

1.0 INTRODUCTION .................................................................................................................. .. 2

1.1 General Description and Features ................................................................................... 2

1.2 Furnished Accessories ...................................................................................................... 3

1.3 Technical Specifications ................................................................................................... 4

1.4 EZCT-2000 Controls and Indicators .................................................................................. 5

2.0 PRE-TEST SETUP ................................................................................................................... 7

2.1 Operating Voltages .......................................................................................................... 7

2.2 LCD Screen Contrast Control ............................................................................................ 7

2.3 Printer Paper Control ....................................................................................................... 7

2.4 Printer Paper .................................................................................................................... 7

3.0 OPERATING PROCEDURES ................................................................................................... 9

3.1 EZCT-2000 Cable Connections ......................................................................................... 9

3.2 EZCT-2000 X Input Voltage Warning .............................................................................. 11

3.3 Performing Tests ............................................................................................................ 12

3.3.1. Entering Test Record Header Information ............................................................. 12

3.3.2. Performing Resistance, Excitation, and Ratio Tests ............................................... 15

3.4 Working With Test Records ........................................................................................... 24

3.4.1. Restoring and Printing a Test Record From Flash EEPROM ................................... 24

3.4.2. Printing a Restored Test Record ............................................................................. 27

3.4.3. Printing a Directory of Test Records Stored in the EZCT-2000’s Memory ............. 28

3.4.4. Erasing Test Records From the Flash EEPROM ...................................................... 30

3.5 Working With Test Plans ................................................................................................ 32

3.5.1. Extracting the Test Plan From a Test Record ......................................................... 32

3.5.2. Printing a Directory of Test Plans Stored in the EZCT-2000’s Memory .................. 34

3.5.3. Printing a Test Plan ................................................................................................. 36

3.5.4. Erasing Test Plans From the Flash EEPROM ........................................................... 38

3.5.5. Loading a Test Plan from the EZCT-2000’s Flash EEPROM ..................................... 40

3.5.6. Running a Test Using a Loaded Test Plan ............................................................... 41

3.5.7. Unloading a Test Plan from the Working Memory ................................................ 44

4.0 CHANGING SETUP PARAMETERS ....................................................................................... 45

4.1 Setting the Knee Point Marker ...................................................................................... 45

4.2 Selecting the Buried CT in Transformer Delta Option ................................................... 47

4.3 Setting the Clock ............................................................................................................ 50

5.0 DIAGNOSTICS, VERIFICATION, AND TROUBLESHOOTING ................................................. 51

5.1 Performing a Diagnostics Test ....................................................................................... 51

5.2 Verifying the EZCT-2000’s V

Sense Circuit Using an External Meter ............................ 53

5.3 Verifying the EZCT-2000’s I

Sense Circuit Using an External Meter ............................. 54

5.4 Quickly Verifying the EZCT-2000’s Turns Ratio Circuit .................................................. 55

5.5 Troubleshooting Guide .................................................................................................. 56

6.0 Appendix A - Calculating Turns Ratio on a Shunt Reactor ................................................. 57

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