Vanguard EZCT-2000C Plus User Manual
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REV 1 EZCT-2000C USER’S MANUAL
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TABLE OF CONTENTS
CONVENTIONS USED IN THIS DOCUMENT ........................................................................................................................................ 1
1.0 INTRODUCTION .................................................................................................................................................................. 2
1.1
General Description and Features................................................................................................................................. 2
1.2
Common Features (EZCT-2000C and EZCT-2000C Plus) ................................................................................................ 2
1.3
EZCT-2000C Plus Features ............................................................................................................................................. 4
1.4 Ordering
Information .................................................................................................................................................... 5
1.5 Technical
Specifications ................................................................................................................................................ 6
1.6 EZCT-2000C
Controls and Indicators ............................................................................................................................. 7
2.0 PRE-TEST SETUP ................................................................................................................................................................. 9
2.1
Operating Voltages ....................................................................................................................................................... 9
2.2
LCD Screen Contrast Control ......................................................................................................................................... 9
2.3 Printer
Paper Control .................................................................................................................................................... 9
2.4 Printer Paper ................................................................................................................................................................. 9
3.0 OPERATING
PROCEDURES ................................................................................................................................................ 11
3.1
EZCT-2000C Cable Connections .................................................................................................................................. 11
3.2
EZCT-2000C X Input Voltage Warning ......................................................................................................................... 17
3.3 Performing
Tests
......................................................................................................................................................... 18
3.3.1.
Entering Test Record Header Information ........................................................................................................ 18
3.3.2. Performing
Resistance,
Excitation, and Ratio Tests .......................................................................................... 21
3.3.3.
Performing a CT Burden Test (EZCT-2000C Plus Only) ...................................................................................... 32
3.3.4.
Performing an Insulation Resistance Test ......................................................................................................... 37
3.3.5.
Performing a Current Source Test (EZCT-2000C Plus Only) ............................................................................... 42
3.4
Working With Test Records ........................................................................................................................................ 44
3.4.1.
Restoring and Printing a Test Record From Flash EEPROM ............................................................................... 44
3.4.2.
Restoring and Printing a Test Record From a USB Flash Drive .......................................................................... 48
3.4.3.
Printing a Restored Test Record ........................................................................................................................ 50
3.4.4.
Printing a Directory of Test Records Stored in the EZCT-2000C’s Memory ....................................................... 52
3.4.5.
Printing a Directory of Test Records Stored in a USB Flash Drive ...................................................................... 55
3.4.6.
Copying Test Records to a USB Flash Drive ....................................................................................................... 57
3.4.7.
Erasing Test Records From the Flash EEPROM .................................................................................................. 60
3.4.8.
Erasing Test Records From a USB Flash Drive ................................................................................................... 63
3.5
Working With Test Plans ............................................................................................................................................. 66
3.5.1.
Extracting the Test Plan From a Test Record ..................................................................................................... 66
3.5.2.
Printing a Directory of Test Plans Stored in the EZCT-2000C’s Memory ........................................................... 68
3.5.3.
Printing a Directory of Test Plans Stored in a USB Flash Drive .......................................................................... 70
3.5.4.
Printing a Test Plan ............................................................................................................................................ 72
3.5.5.
Erasing Test Plans From the Flash EEPROM ...................................................................................................... 74
3.5.6.
Erasing Test Plans From a USB Flash Drive ........................................................................................................ 77
3.5.7.
Loading a Test Plan from the EZCT-2000C’s Flash EEPROM .............................................................................. 80
3.5.8.
Loading a Test Plan from a USB Flash Drive ...................................................................................................... 82
3.5.9.
Running a Test Using a Loaded Test Plan .......................................................................................................... 84
3.5.10.
Unloading a Test Plan from the Working Memory ............................................................................................ 88
4.0
CHANGING SETUP PARAMETERS ...................................................................................................................................... 89
4.1
Setting the Knee Point Marker .................................................................................................................................... 89
4.2
Enabling and Disabling the Buried CT in Transformer Delta Option ........................................................................... 91
4.2.1.
Enabling the Buried CT in Transformer Delta Option ........................................................................................ 91
4.2.2.
Disabling the Buried CT in Transformer Delta Option ....................................................................................... 92
4.3 Setting
the Clock ......................................................................................................................................................... 96
4.4
Setting the Preferred Interface Language ................................................................................................................... 97
4.5
Printing Raw Memory Buffer Data .............................................................................................................................. 99
4.6
Disabling the H Voltage Checking Feature ................................................................................................................ 100
5.0 DIAGNOSTICS,
VERIFICATION, AND TROUBLESHOOTING ............................................................................................... 102
5.1
Performing a Diagnostics Test ................................................................................................................................... 102
5.2
Verifying the EZCT-2000C’s V
x
Sense Circuit Using an External Meter ...................................................................... 104
5.3
Verifying the EZCT-2000C’s I
x
Sense Circuit Using an External Meter ....................................................................... 105
5.4
Quickly Verifying the EZCT-2000C’s Turns Ratio Circuit ............................................................................................ 106