Vanguard EZCT-2000C Plus - Manual (Page 4)

EZCT-2000C USER’S MANUAL REV 1
iii
5.5 Troubleshooting Guide ............................................................................................................................................. 107
6.0 Appendix A - Calculating Turns Ratio on a Shunt Reactor .............................................................................................. 108
LIST OF TABLES
Table 1. Ordering Information .......................................................................................................................................................... 5
Table 2. EZCT-2000C Technical Specifications .................................................................................................................................. 6
Table 3. Functional Descriptions of EZCT-2000C Controls and Indicators ........................................................................................ 8
Table 4. Descriptions of Tabulated Test Results Elements .............................................................................................................. 30
Table 5. Description of Test Plan Elements ..................................................................................................................................... 73
LIST OF FIGURES
Figure 1. EZCT-2000C Controls and Indicators .................................................................................................................................. 7
Figure 2. Typical EZCT-2000C Excitation and Ratio Test Cable Connections ................................................................................... 11
Figure 3. Connections for a typical high resistance measuring application .................................................................................... 12
Figure 4. Connections for a typical insulation resistance measurement for a CT with 5 terminals ................................................ 12
Figure 5. Connections for a typical insulation resistance measurement for a CT with 2 terminals ................................................ 13
Figure 6. EZCT-2000C CT Burden Test Cable Connection (EZCT-2000C Plus Only) .......................................................................... 14
Figure 7. EZCT-2000C Typical Current Source Connection (EZCT-2000C Plus Only) ........................................................................ 15
Figure 8. Bushing CT Connection on Delta Transformer ................................................................................................................. 16
Figure 9. Bushing CT Connection on Y Transformer ........................................................................................................................ 16
Figure 10. Sample CT Name Plate ................................................................................................................................................... 17
Figure 11. Typical EZCT-2000C Tabulated Report Printout ............................................................................................................. 29
Figure 12. Typical EZCT-2000C Graphic Report with Multiple Plot Curves ..................................................................................... 31
Figure 13. EZCT-2000C Typical Burden Test Results Report Printout ............................................................................................. 36
Figure 14. Connections for a typical high resistance measuring application .................................................................................. 37
Figure 15. Connections for a typical insulation resistance measurement for a CT with 5 terminals .............................................. 37
Figure 16. Connections for a typical insulation resistance measurement for a CT with 2 terminals .............................................. 37
Figure 17. EZCT-2000C Typical Insulation Resistance Test Results Report Printout ....................................................................... 41
Figure 18. Typical Internal Test Record Directory Printout ............................................................................................................. 54
Figure 19. Typical USB Flash Drive Record Directory Printout ........................................................................................................ 56
Figure 20. Typical EZCT-2000C Flash EEPROM Test Plan Directory Printout ................................................................................... 69
Figure 21. Typical USB Flash Drive Test Plan Directory Printout ..................................................................................................... 71
Figure 22. Typical Test Plan Printout .............................................................................................................................................. 73
Figure 23. Graphic Report Showing Knee Point Marker ................................................................................................................. 90
Figure 24. Buried CT in a Delta Transformer Illustration 1 .............................................................................................................. 94
Figure 25. Buried CT in a Delta Transformer Illustration 2 .............................................................................................................. 94
Figure 26. EZCT-2000C V
x
Verification Test Connections .............................................................................................................. 104
Figure 27. EZCT-2000C I
x
Verification Test Connections ............................................................................................................... 105
Figure 28. EZCT-2000C Turns Ratio Verification Test Connections ............................................................................................... 106
Figure 29 ....................................................................................................................................................................................... 108
Figure 30 ....................................................................................................................................................................................... 109
Figure 31 ....................................................................................................................................................................................... 110
Figure 32 ....................................................................................................................................................................................... 111
Figure 33 ....................................................................................................................................................................................... 112
Figure 34 ....................................................................................................................................................................................... 113
Figure 35 ....................................................................................................................................................................................... 114
Figure 36 ....................................................................................................................................................................................... 114