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Megger Three-Phase TTR User Manual
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AVTMTTR330
Rev 3
March 2010
Instruction Manual
for
Three-Phase TTR
®
Transformer Turn Ratio Test Set
TTR330 Series
Catalog Nos. TTR330, TTR330-47
HIGH-VOLTAGE EQUIPMENT
Read this entire m
anual before operating.
M
Valley Forge Corporate Center
2621 Van Buren Avenue
Norristown, PA 19403-2329
U.S.A.
610-676-8500
www.megger.com
2
Table of Contents
Default Chapter
5
Table of Contents
5
1 Getting to Know the TTR330
9
Product Overview
9
Figure 1-1 Top Panel Controls
11
User Interface Panel
12
Figure 1-2. User Interface Panel
12
Communications Ports
13
HOME Action Icons
13
Figure 1-3. Communications Ports
13
Figure 1-4. HOME Action Icons
13
Utility Icons
14
Figure 1-5. Utility Icons
14
2 Safety
15
Safety Is the Responsibility of the User
15
Input Power Precautions
16
3 Preparing for Test
17
Site Preparation
17
Making Circuit Connections
17
4 Connecting to the Transformer
19
Single-Phase, Two-Winding Transformers
19
Figure 4-1. Setup for Testing Single-Phase Transformer
20
Figure 4-2. Setup for Testing Single-Phase Autotransformer
20
Figure 4-3. Setup for Testing Single-Phase, Type a (Straight Design) Step Voltage Regulator
21
Table 4-1. Test Lead Markings for Single-Phase Transformers
21
Three-Phase, Two-Winding Transformers
22
Figure 4-4. Setup for Testing Single-Phase, Type B (Inverted Design) Step Voltage Regulator
22
Three-Phase, Three-Winding Transformers
23
Table 4-2. Test Lead Markings for Three-Phase Transformers
23
Current Transformers (Cts)
24
Figure 4-5. Setup for Testing Unmounted Current Transformer
25
Figure 4-6. Setup for Testing Taps on Multiple Tap CT
26
Bcts Mounted on Three-Phase Transformers
27
Figure 4-7. Setup for Testing BCT Mounted on Single-Phase Two-Winding Transformer
27
Figure 4-8. Setup for Testing BCT Mounted on Delta Winding on a Three-Phase Power Transformer
28
Figure 4-9. Setup for Testing BCT Mounted on Wye Winding of a Three-Phase Transformer
29
T-Type Transformers
30
Table 4-3. T-Type Transformer Winding Phase Relationship
30
5 Operation
31
Power up
31
Navigating the Screen
31
HOME Screen Action Icons
31
Figure 5-1 New Test Form Screen
32
Figure 5-2 Three Phase QUICK Test Screen
33
Figure 5-3 File Manager -Recall Test
33
Figure 5-4. File Manager -SAVE Test Screen
34
Figure 5-5 Global Settings - Preferences Screen
34
Remote Control Operation for LTC Testing
35
Error Messages
35
Upon Completion of TEST - Powering down
36
6 Service
39
Maintenance
39
Fuse Replacement
39
Calibration
42
TTR330 - Self Check
43
Troubleshooting
45
Table 6-1. Troubleshooting Guide
45
Repairs
46
7 Replacement Parts List and Optional Accessories
47
Table 7-1. Replacement Parts List
47
AVTMTTR330 Rev 3 March
48
8 Specifications
49
Electrical
49
Environmental Conditions
51
Physical Data
51
Addendum a TTR 300 Series Powerdb Lite User Manual
51
AVTMTTR330 Rev 3 March
55
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Megger Three-Phase TTR Specifications
General
Brand
Megger
Model
Three-Phase TTR
Category
Measuring Instruments
Language
English
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