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Megger AVTMTTR100 User Manual
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M
AVTMTTR100-ENG Rev 6 Nov 2015
40
Table 5-3.
CEI/IEC 76
-1:2011 Tra
nsformer Wi
nding Phas
e Relations
hip
Copyright 2009
Megge
r
Winding Connection
Winding Tested
Diag
No.
IEC
Vector
Group
High-Voltage
Winding (U1)
Low-Voltage
Winding (U2)
Phase
Tested
Winding
Shorted
By TTR
High-
Voltage
Winding
Low-
Voltage
Winding
Measured
Turn Ratio
Remarks
21
Dzn4
U
V
W
1V-1W
1W-1U
1U-1V
1U-(1V+1W)
1V-(1W+1U)
1W-(1U+1V)
2W-2N
2U-2N
2V-2N
Neutral
accessible
on zigzag
winding
22
Dz4
U
V
W
1U-1V
1V-1W
1W-1U
2W-2U
2U-2V
2V-2W
No neutral
accessible
on zigzag
winding
23
Dzn6
U
V
W
1V-1W
1W-1U
1U-1V
1U-(1V+1W)
1V-(1W+1U)
1W-(1U+1V)
2N-2U
2N-2V
2N-2W
Neutral
accessible
on zigzag
winding
24
Dz6
U
V
W
1U-1V
1V-1W
1W-1U
2V-2U
2W-2V
2U-2W
No neutral
accessible
on zigzag
winding
25
Dzn8
U
V
W
1V-1W
1W-1U
1U-1V
1U-(1V+1W)
1V-(1W+1U)
1W-(1U+1V)
2V-2N
2W-2N
2U-2N
Neutral
accessible
on zigzag
winding
26
Dz8
U
V
W
1U-1V
1V-1W
1W-1U
2V-2W
2W-2U
2U-2V
No neutral
accessible
on zigzag
winding
1.5U1
U2
U1
U2
1.5U1
U2
U1
U2
1.5U1
U2
U1
U2
47
49
Table of Contents
Table of Contents
5
Introduction
9
Receiving Instructions
9
General Information
9
Safety
13
Specifications
17
Electrical
17
Environmental Conditions
19
Physical Data
19
Description
21
Principle of Operation
21
Controls, Indicators, and Connectors (Figure 4-1)
21
Figure 4-1 Single-Phase TTR Display & Control Panel
22
Figure 4-2. Top Side Connector Panel
23
Setup and Connections
25
General Instructions
25
Transformers
25
Single-Phase, Two-Winding Transformers
26
Distribution Transformers with Two Secondary Windings
26
Figure 5-1. Setup for Testing Single-Phase Transformer
27
Figure 5-2. Setup for Testing Single-Phase Autotransformer
27
Figure 5-3. Setup for Testing Single-Phase, Type a (Straight Design) Step Voltage Regulator
28
Figure 5-4. Setup for Testing Single-Phase, Type B (Inverted Design) Step Voltage Regulator
28
Current Transformers (Cts)
29
Figure 5-5. Setup for Testing Unmounted Current Transformer
30
Figure 5-6. Setup for Testing Taps on Multiple Tap CT
30
Figure 5-7. Setup for Testing BCT Mounted on Single-Phase Two-Winding Transformer
31
T-Type Transformers
32
Table 5-1. ANSI Transformer Winding Phase Relationship
32
Connections and Vector Voltage Diagrams
33
Table 5-2. ANSI Transformer Winding Phase Relationship
35
Table 5-3. CEI/IEC 76-1:2011 Transformer Winding Phase Relationship
45
Table 5-4. Transformer Winding Phase Relationship (Australian Std. 2374, Part 4 - 2003)
55
Operation
61
General Operating Procedure
61
Description of Menus and Test Screens
61
Figure 6-1. Opening Display Screen
62
Figure 6-2. Main Menu Screen
63
Figure 6-3. Transformer Configuration Screen
64
Figure 6-4. Single Phase Transformer Configuration Screen
65
Figure 6-4A. Additional Single Phase Transformer Configuration Screen
65
Figure 6-5. Three Phase Transformer Configuration Screen
66
Figure 6-5A. Three Phase Transformer Configuration Screen
66
Figure 6-6. T - Type Transformer Configuration Screen
66
Quick Test Single Phase Transformer
67
Figure 6-7. Transformer Rating Screen
67
Quick Test Three Phase Transformer
68
Test T-Type Transformers
69
Full Test Single Phase Transformer
70
Figure 6-8. TEST SETUP Screen
70
Full Test Single Phase Tapped Transformer
71
Full Test Cts
72
Full Test Regulator
72
Test Result Symbols
73
Custom Configurations
74
Figure 6-9. Custom Configs. Screen
74
System Setup
75
Figure 6-10. SYSTEM SETUP Screen 1
75
Figure 6-11. SYSTEM SETUP Screen 2
76
Figure 6-12. SAVED READINGS Screen
77
Error Messages
79
Table 6-1. Self-Test Error Messages
79
Table 6-2. Test Error Messages
80
Table 6-3. Test Result Error Messages
81
Table 6-4. Miscellaneous Messages
81
Use with the Optional Printer
82
Figure 6-13A. Sample Test Report Header
82
Figure 6-13B. Sample Single Phase Test Report
82
Using Comlink Program
83
Figure 6-14. Report Printout
87
Service
89
Maintenance
89
Calibration
89
TTR100 Test Set Functional Test
90
Battery Maintenance
91
Troubleshooting
93
Table 7-1. Troubleshooting Guide
93
Repair
94
Ordering Information and Spare Parts List
95
Warranty
99
4
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Megger AVTMTTR100 Specifications
General
Brand
Megger
Model
AVTMTTR100
Category
Test Equipment
Language
English
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