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EZCT-2KA
Vanguard EZCT-2KA Manuals
Manuals and User Guides for Vanguard EZCT-2KA. We have
1
Vanguard EZCT-2KA manual available for free PDF download: User Manual
Vanguard EZCT-2KA User Manual (109 pages)
DIGITAL CURRENT-TRANSFORMER TESTER
Brand:
Vanguard
| Category:
Test Equipment
| Size: 4 MB
Table of Contents
Table of Contents
3
Conventions Used in this Document
6
1 Introduction
7
General Description and Features
7
Furnished Accessories
9
Technical Specifications
10
Table 1. EZCT-2KA Technical Specifications
10
EZCT-2KA Controls and Indicators
11
Figure 1. EZCT-2KA Controls and Indicators
11
Table 2. Functional Descriptions of EZCT-2KA Controls and Indicators
12
2 Pre-Test Setup
13
Operating Voltages
13
LCD Screen Contrast Control
13
Printer Paper Control
13
Printer Paper
13
3 Operating Procedures
15
EZCT-2KA Cable Connections
15
Figure 2. Typical EZCT-2KA Excitation and Ratio Test Cable Connection
15
Figure 3. Bushing CT Connection on Delta Transformer
16
Figure 4. Bushing CT Connection on y Transformer
16
EZCT-2KA X Input Voltage Warning
17
Figure 5. Sample CT Name Plate
17
Performing Tests
18
Entering Test Record Header Information
18
Performing Resistance, Excitation, and Ratio Tests
21
Figure 6. Typical EZCT-2KA Tabulated Report Printout
29
Table 3. Descriptions of Tabulated Test Results Elements
30
Figure 7. Typical EZCT-2KA Graphic Report
31
Figure 8. Typical EZCT-2KA Graphic Report with Multiple Plot Curves
31
Working with Test Records
32
Restoring and Printing a Test Record from Flash EEPROM
32
Restoring and Printing a Test Record from a USB Flash Drive
36
Printing a Restored Test Record
38
Printing a Directory of Test Records Stored in the EZCT-2Ka's Memory
40
Figure 9. Typical Internal Test Record Directory Printout
42
Printing a Directory of Test Records Stored in a USB Flash Drive
43
Figure 10. Typical USB Flash Drive Record Directory Printout
44
Copying Test Records to a USB Flash Drive
45
Erasing Test Records from the Flash EEPROM
47
Erasing Test Records from a USB Flash Drive
51
Working with Test Plans
54
Extracting the Test Plan from a Test Record
54
Printing a Directory of Test Plans Stored in the EZCT-2Ka's Memory
56
Figure 11. Typical EZCT-2KA Flash EEPROM Test Plan Directory Printout
57
Printing a Directory of Test Plans Stored in a USB Flash Drive
58
Figure 12. Typical USB Flash Drive Test Plan Directory Printout
59
Printing a Test Plan
60
Table 4. Description of Test Plan Elements
61
Figure 13. Typical Test Plan Printout
61
Erasing Test Plans from the Flash EEPROM
62
Erasing Test Plans from a USB Flash Drive
66
Loading a Test Plan from the EZCT-2Ka's Flash EEPROM
69
Loading a Test Plan from a USB Flash Drive
71
Running a Test Using a Loaded Test Plan
73
Unloading a Test Plan from the Working Memory
78
4 Changing Setup Parameters
79
Setting the Knee Point Marker
79
Figure 14. Graphic Report Showing Knee Point Marker
80
Enabling and Disabling the Buried CT in Transformer Delta Option
81
Enabling the Buried CT in Transformer Delta Option
81
Disabling the Buried CT in Transformer Delta Option
82
Figure 15. Buried CT in a Delta Transformer Illustration 1
83
Figure 16. Buried CT in a Delta Transformer Illustration 2
84
Setting the Clock
85
Toggling the Printing of Impedance Values
87
Figure 17. CT Data Points Printed with Impedance Values
88
Figure 18. CT Data Points Printed Without Impedance Values
88
Toggling the Calibration Notification Feature
89
Figure 19. Sample Test Report Printout with Calibration Due Date
90
Re-Setting the List of Paired Bluetooth Devices
91
Printing Raw Memory Buffer Data
93
5 Diagnostics, Verification, and Troubleshooting
94
Performing a Diagnostics Test
94
Verifying the EZCT-2Ka's
96
Sense Circuit Using an External Meter
96
Figure 20. EZCT-2KA V
96
Verifying the EZCT-2Ka's I
97
Sense Circuit Using an External Meter
97
Figure 21. EZCT-2KA I X
97
Quickly Verifying the EZCT-2Ka's Turns Ratio Circuit
98
Figure 22. EZCT-2KA Turns Ratio Verification Test Connections
98
Troubleshooting Guide
99
7 Appendix A - Calculating Turns Ratio on a Shunt Reactor
101
Figure 23
101
Figure 24
102
Figure 25
103
Figure 26
104
Figure 27
105
Figure 28
106
Figure 29
107
Figure 30
108
Figure 31
108
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