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EZCT-2000A
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Manuals and User Guides for Vanguard Instruments EZCT-2000A. We have
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Vanguard Instruments EZCT-2000A manual available for free PDF download: User Manual
Vanguard Instruments EZCT-2000A User Manual (96 pages)
DIGITAL CURRENT-TRANSFORMER TESTER
Brand:
Vanguard Instruments
| Category:
Test Equipment
| Size: 2 MB
Table of Contents
Table of Contents
3
Conventions Used in this Document
5
1 Introduction
6
General Description and Features
6
Furnished Accessories
8
Technical Specifications
9
Table 1. EZCT-2000A Technical Specifications
9
EZCT-2000A Controls and Indicators
10
Figure 1. EZCT-2000A Controls and Indicators
10
Table 2. Functional Descriptions of EZCT-2000A Controls and Indicators
11
2 Pre-Test Setup
12
Operating Voltages
12
LCD Screen Contrast Control
12
Printer Paper Control
12
Printer Paper
12
3 Operating Procedures
14
EZCT-2000A Cable Connections
14
Figure 2. Typical EZCT-2000A Excitation and Ratio Test Cable Connection
14
Figure 3. Bushing CT Connection on Delta Transformer
15
Figure 4. Bushing CT Connection on y Transformer
15
EZCT-2000A X Input Voltage Warning
16
Figure 5. Sample CT Name Plate
16
Performing Tests
17
Entering Test Record Header Information
17
Performing Resistance, Excitation, and Ratio Tests
20
Figure 6. Typical EZCT-2000A Tabulated Report Printout
28
Table 3. Descriptions of Tabulated Test Results Elements
29
Figure 7. Typical EZCT-2000A Graphic Report
30
Figure 8. Typical EZCT-2000A Graphic Report with Multiple Plot Curves
30
Working with Test Records
31
Restoring and Printing a Test Record from Flash EEPROM
31
Restoring and Printing a Test Record from a USB Flash Drive
35
Printing a Restored Test Record
38
Printing a Directory of Test Records Stored in the EZCT-2000A'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
48
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-2000A's Memory
56
Figure 11. Typical EZCT-2000A 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
65
Loading a Test Plan from the EZCT-2000A's Flash EEPROM
68
Loading a Test Plan from a USB Flash Drive
70
Running a Test Using a Loaded Test Plan
72
Unloading a Test Plan from the Working Memory
77
4 Changing Setup Parameters
78
Setting the Knee Point Marker
78
Figure 14. Graphic Report Showing Knee Point Marker
79
Enabling and Disabling the Buried CT in Transformer Delta Option
80
Enabling the Buried CT in Transformer Delta Option
80
Disabling the Buried CT in Transformer Delta Option
81
Figure 15. Buried CT in a Delta Transformer Illustration 1
83
Figure 16. Buried CT in a Delta Transformer Illustration 2
83
Setting the Clock
85
5 Diagnostics, Verification, and Troubleshooting
87
Performing a Diagnostics Test
87
Verifying the EZCT-2000A's
89
Sense Circuit Using an External Meter
89
Figure 17. EZCT-2000A V X Verification Test Connections
89
Verifying the EZCT-2000A's I
90
Sense Circuit Using an External Meter
90
Figure 18. EZCT-2000A I X Verification Test Connections
90
Quickly Verifying the EZCT-2000A's Turns Ratio Circuit
91
Figure 19. EZCT-2000A Turns Ratio Verification Test Connections
91
Troubleshooting Guide
92
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