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TRF-250
Vanguard Instruments TRF-250 Manuals
Manuals and User Guides for Vanguard Instruments TRF-250. We have
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Vanguard Instruments TRF-250 manual available for free PDF download: User Manual
Vanguard Instruments TRF-250 User Manual (134 pages)
THREE-PHASE TRANSFORMER TURNS-RATIO METER
Brand:
Vanguard Instruments
| Category:
Measuring Instruments
| Size: 10 MB
Table of Contents
Table of Contents
3
Conventions Used in this Document
6
1 Introduction
7
General Description and Features
7
Technical Specifications
9
Table 1. TRF-250 Technical Specifications
9
Controls and Indicators
10
Figure 1. TRF-250 Controls and Indicators
10
Table 2. Functional Descriptions of TRF-250 Controls and Indicators
11
2 Pre-Test Setup
12
Operating Voltages
12
LCD Screen Contrast Control
12
Printer Paper Control
12
Printer Paper
12
Replacing the Load Tap Changer Controller Fuses
13
3 Operating Procedures
14
Connection Diagrams
14
Typical Connections to a Load Tap Changer (LTC)
14
Figure 2. Typical Connections to a Load Tap Changer (LTC)
14
Typical Connections to a Delta-Wye Transformer
15
Figure 3. Typical H & X Cable Connections to a Delta-Wye Transformer
15
Figure 4. Typical Connections to a Single Phase Transformer
16
Figure 5. Typical Connections to a Single Phase Auto Transformer
16
Figure 6. Typical Connections to a Type a Voltage Regulator
17
Figure 7. Typical Connections to a Type B Voltage Regulator
17
Figure 8. Typical Connections to a Donut Type (Un-Mounted) Current Transformer (CT)
18
Figure 9. Typical Connections to a Multi-Tap Current Transformer
19
Figure 10. Typical Connections to a Bushing Mount CT on a Single Phase Transformer
20
Figure 11. Typical Connections to Bushing Mount Ct's on Delta Transformer
21
Figure 12. Typical Connections to Bushing Mount Ct's on Wye Transformer
22
Setting the Test Voltage
23
Setting the Date and Time
25
Setting the User Interface Language
27
Clearing the List of Trusted Bluetooth Devices
29
Performing Tests
31
Entering Test Record Header Information
31
Testing a Single Phase Transformer
34
Table 3. Descriptions of Single Phase Test Results Elements (Column Format)
40
Figure 13. Single Phase Test Results Printout - Column Format
40
Figure 14. Single Phase Test Results Printout - Detailed Format
41
Table 4. Descriptions of Single Phase Test Results Elements (Detailed Format)
42
Testing a Dyn1 (12,000 V/208 V) Transformer
43
Figure 15. Dyn1 Test Results Printout - Column Format
49
Table 5. Descriptions of Dyn1 Test Results Elements (Column Format)
50
Figure 16. Dyn1 Test Results Printout - Detailed Format
51
Table 6. Descriptions of Dyn1 Test Results Elements (Detailed Format)
52
Testing a Three Phase Transformer Using Auto Detect Mode
53
Working with Test Records
60
Saving Test Results to a Test Record
60
Restoring a Test Record from Flash EEPROM
62
Restoring a Test Record from a USB Flash Drive
67
Copying Test Records to a USB Flash Drive
71
Printing or Displaying a Test Record
74
Printing a Test Record Directory
76
Figure 17. Typical USB Flash Drive (Thumb Drive) Test Record Directory Printout
78
Figure 18. Typical Internal Flash EEPROM Test Record Directory Printout
78
Erasing Test Records from the Flash EEPROM
79
Erasing Test Records from a USB Flash Drive
83
Working with Test Plans
86
Performing a Test Using a Transformer Test Plan
86
Figure 19. Test Plan Test Results Printout
92
Unloading a Test Plan from the Working Memory
93
Printing a Test Plan Directory
94
Printing a Test Plan
96
Figure 20. Sample Printout of a Test Plan from a USB Flash Drive
97
Figure 21. Sample Printout of a Test Plan from Internal Memory
98
Saving a Test Plan
99
Copying a Test Plan to a USB Flash Drive
101
Erasing Test Plans
103
4 Diagnostics, Verification, and Troubleshooting
107
Performing an H and X Cable Diagnostic Test
107
Performing a Verification Test
109
Appendix A - Transformer Vector Group Codes
111
APPENDIX B - Common ANSI Transformer Descriptions
112
APPENDIX C - CEI/IEC 60076-1 Transformer Descriptions
120
APPENDIX D - Australian Std.2374 Transformer Descriptions
127
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