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TTR20-1
Megger TTR20-1 Turns Ratio Tester Manuals
Manuals and User Guides for Megger TTR20-1 Turns Ratio Tester. We have
1
Megger TTR20-1 Turns Ratio Tester manual available for free PDF download: Instruction Manual
Megger TTR20-1 Instruction Manual (60 pages)
Transformer Turn Ratio Test Set
Brand:
Megger
| Category:
Test Equipment
| Size: 1 MB
Table of Contents
Table of Contents
5
1 Introduction
9
About the TTR20 (TTR20-1)
9
Electrical Theory and Practice
10
Applications for the TTR20
12
Figure 1-1. TTR20 Single-Phase Test Set Block Diagram
12
Upon Receipt of the TTR20
13
Safety First
13
How to Use this Manual
13
2 Safety
15
Overview
15
Safety Requirements
15
Cautions and Warnings
16
3 Controls & Connectors
17
Overview
17
Figure 3-1 TTR20 Display & Control Panel
17
Connectors
18
Figure 3-2 TTR20 Top Side Connector Panel
18
4 Setup, Connections and Operation
19
General Instructions
19
Transformers
19
Single-Phase, Two-Winding Transformers
20
Distribution Transformers with Two Secondary Windings
20
Figure 4-1 Setup for Testing Single-Phase Transformer
21
Figure 4-2 Setup for Testing Single-Phase Autotransformer
21
Figure 4-3 Setup for Testing Single-Phase, Type a Step Voltage Regulator
22
Figure 4-4 Setup for Testing Single-Phase, Type B Step Voltage Regulator
22
Figure 4-5 Setup for Testing X1 - X2 Winding of Distribution Transformer
23
Figure 4-6 Setup for Testing X3 - X2 Winding of Distribution Transformer
23
Figure 4-7 Setup for Testing X1 - X3 Winding of Distribution Transformer
23
Three-Phase, Two-Winding Transformers
24
Three-Phase, Three-Winding Transformers
24
Current Transformers (Cts)
24
Figure 4-8 Setup for Testing Unmounted Current Transformer
26
Figure 4-9 Setup for Testing Taps on Multiple Tap CT
26
Figure 4-10 Setup for Testing BCT Mounted on Single-Phase Two-Winding Transformer
27
General Operating Procedure
28
Description of Menus and Test Screens
28
Figure 4-11 TTR20 Opening Display Screen
28
Figure 4-12 Start Test Screen
29
Figure 4-13 Test in Progress Screen
30
Figure 4-14 TTR20 Test Result Screen
30
Use with the Optional Printer
31
Figure 4-15 Sample Test Report
31
Figure 4-16 Printer Configuration Printout
32
Hyperterminal Configuration
33
5 Maintenance and Troubleshooting
35
Maintenance
35
Calibration Check
35
TTR20 Functional Test
36
Battery Replacement
37
Troubleshooting
38
Table 5-1 Troubleshooting Guide
38
Error Messages
39
Table 5-2 Self-Test Error Messages
39
Table 5-3 Test Error Messages
39
Table 5-4 Miscellaneous Message
40
Repair
41
Appendixa - Specifications
43
Appendix A - Specifications
43
Electrical
43
Environmental Conditions
45
Physical Data
45
AVTMTTR20 Rev 4 Dec
46
Appendixb - Ordering Information & Spare Parts List
47
Part List
47
Appendix B - Ordering Information & Spare Parts List
49
Appendixc - Connections and Vector Voltage Diagrams
49
Table C-1 ANSI Transformer Winding Phase Relationship
50
Table C-2. ANSI Transformer Winding Phase Relationship
52
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