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Vanguard Instruments Company EZCT-2000C Manuals
Manuals and User Guides for Vanguard Instruments Company EZCT-2000C. We have
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Vanguard Instruments Company EZCT-2000C manual available for free PDF download: User Manual
Vanguard Instruments Company EZCT-2000C User Manual (122 pages)
DIGITAL CURRENT-TRANSFORMER TESTER
Brand:
Vanguard Instruments Company
| Category:
Test Equipment
| Size: 5.39 MB
Table of Contents
Table of Contents
3
Conventions Used in this Document
6
1 Introduction
7
General Description and Features
7
Common Features (EZCT-2000C and EZCT-2000C Plus)
7
EZCT-2000C Plus Features
9
Ordering Information
10
Table 1. Ordering Information
10
Technical Specifications
11
Table 2. EZCT-2000C Technical Specifications
11
EZCT-2000C Controls and Indicators
12
Figure 1. EZCT-2000C Controls and Indicators
12
Table 3. Functional Descriptions of EZCT-2000C Controls and Indicators
13
2 Pre-Test Setup
14
Operating Voltages
14
LCD Screen Contrast Control
14
Printer Paper Control
14
Printer Paper
14
3 Operating Procedures
16
EZCT-2000C Cable Connections
16
Figure 2. Typical EZCT-2000C Excitation and Ratio Test Cable Connections
16
Figure 3. Connections for a Typical High Resistance Measuring Application
17
Figure 4. Connections for Insulation Resistance Measurement for a CT with 5 Terminals
17
Figure 5. Connections for Insulation Resistance Measurement for a CT with 2 Terminals
18
Figure 6. EZCT-2000C CT Burden Test Cable Connection (EZCT-2000C Plus Only)
19
Figure 7. EZCT-2000C Typical Current Source Connection (EZCT-2000C Plus Only)
20
Figure 8. Bushing CT Connection on Delta Transformer
21
Figure 9. Bushing CT Connection on y Transformer
21
EZCT-2000C X Input Voltage Warning
22
Figure 10. Sample CT Name Plate
22
Performing Tests
23
Entering Test Record Header Information
23
Performing Resistance, Excitation, and Ratio Tests
26
Figure 11. Typical EZCT-2000C Tabulated Report Printout
34
Table 4. Descriptions of Tabulated Test Results Elements
35
Figure 12. Typical EZCT-2000C Graphic Report with Multiple Plot Curves
36
Performing a CT Burden Test (EZCT-2000C Plus Only)
37
Figure 13. EZCT-2000C Typical Burden Test Results Report Printout
41
Performing an Insulation Resistance Test
42
Figure 14. Connections for a Typical High Resistance Measuring Application
42
Figure 15. Connections for Insulation Resistance Measurement for a CT with 5 Terminals
42
Figure 16. Connections for Insulation Resistance Measurement for a CT with 2 Terminals
42
Figure 17. EZCT-2000C Typical Insulation Resistance Test Results Report Printout
46
Performing a Current Source Test (EZCT-2000C Plus Only)
47
Working with Test Records
49
Restoring and Printing a Test Record from Flash EEPROM
49
Restoring and Printing a Test Record from a USB Flash Drive
53
Printing a Restored Test Record
56
Printing a Directory of Test Records Stored in the EZCT-2000C's Memory
58
Figure 18. Typical Internal Test Record Directory Printout
60
Printing a Directory of Test Records Stored in a USB Flash Drive
61
Figure 19. Typical USB Flash Drive Record Directory Printout
62
Copying Test Records to a USB Flash Drive
63
Erasing Test Records from the Flash EEPROM
66
Erasing Test Records from a USB Flash Drive
69
Working with Test Plans
72
Extracting the Test Plan from a Test Record
72
Printing a Directory of Test Plans Stored in the EZCT-2000C's Memory
74
Figure 20. Typical EZCT-2000C Flash EEPROM Test Plan Directory Printout
75
Printing a Directory of Test Plans Stored in a USB Flash Drive
76
Figure 21. Typical USB Flash Drive Test Plan Directory Printout
77
Printing a Test Plan
78
Table 5. Description of Test Plan Elements
79
Figure 22. Typical Test Plan Printout
79
Erasing Test Plans from the Flash EEPROM
80
Erasing Test Plans from a USB Flash Drive
83
Loading a Test Plan from the EZCT-2000C's Flash EEPROM
86
Loading a Test Plan from a USB Flash Drive
88
Running a Test Using a Loaded Test Plan
90
Unloading a Test Plan from the Working Memory
94
4 Changing Setup Parameters
95
Setting the Knee Point Marker
95
Figure 23. Graphic Report Showing Knee Point Marker
96
Enabling and Disabling the Buried CT in Transformer Delta Option
97
Enabling the Buried CT in Transformer Delta Option
97
Disabling the Buried CT in Transformer Delta Option
98
Figure 24. Buried CT in a Delta Transformer Illustration 1
100
Figure 25. Buried CT in a Delta Transformer Illustration 2
100
Setting the Clock
102
Setting the Preferred Interface Language
103
Printing Raw Memory Buffer Data
105
Disabling the H Voltage Checking Feature
106
5 Diagnostics, Verification, and Troubleshooting
108
Performing a Diagnostics Test
108
Verifying the EZCT-2000C's
110
Sense Circuit Using an External Meter
110
Figure 26. EZCT-2000C V Verification Test Connections
110
Verifying the EZCT-2000C's I X Sense Circuit Using an External Meter
111
Figure 27. EZCT-2000C I Verification Test Connections
111
Quickly Verifying the EZCT-2000C's Turns Ratio Circuit
112
Figure 28. EZCT-2000C Turns Ratio Verification Test Connections
112
Troubleshooting Guide
113
6 Appendix A - Calculating Turns Ratio on a Shunt Reactor
114
Figure 29
114
Figure 30
115
Figure 31
116
Figure 32
117
Figure 33
118
Figure 34
119
Figure 35
120
Figure 36
121
Figure 37
121
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