AVTMTTR310 Rev 8 May 2016
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TABLE OF CONTENTS
1 INTRODUCTION ..................................................................................................................................................... 1
2 SAFETY .................................................................................................................................................................... 5
3 SPECIFICATIONS .................................................................................................................................................... 9
Input Power ................................................................................................................................................. 9
Pollution Degree .......................................................................................................................................... 9
Protective Devices ....................................................................................................................................... 9
Output Test Voltage and Current ............................................................................................................. 9
Test Frequency ............................................................................................................................................ 9
Loading of Test Transformer ................................................................................................................. 10
Measuring Ranges ..................................................................................................................................... 10
Accuracy .................................................................................................................................................... 10
Measurement Method .............................................................................................................................. 10
Transformer Winding Phase Relationship ............................................................................................ 11
Measuring Time ........................................................................................................................................ 11
Display ....................................................................................................................................................... 11
Memory Storage ....................................................................................................................................... 11
Interface ..................................................................................................................................................... 11
4 DESCRIPTION ...................................................................................................................................................... 15
5 SETUP AND CONNECTIONS............................................................................................................................... 19
Single-Phase, Two-Winding Transformers........................................................................................... 19
Current Transformers (CTs) ................................................................................................................... 25
Unmounted CTs ....................................................................................................................................... 25
Bushing Current Transformer (BCT) Mounted on Single-Phase, Two-Winding Transformer ... 27
BCTs Mounted on Three-Phase Transformers ................................................................................... 28
T-Type Transformers .............................................................................................................................. 31
Connections and Vector Voltage Diagrams ......................................................................................... 32
Notes to Table 5-4 ................................................................................................................................... 35
Notes to Table 5-5 ................................................................................................................................... 47
Notes to Table 5-6 ................................................................................................................................... 58
6 OPERATION ......................................................................................................................................................... 67
MAIN MENU Screen (Figure 6-1) ....................................................................................................... 68
QUICK TEST SETUP Screen (Figure 6-2) ......................................................................................... 70
Quick Test Result Screens (Figure 6-3 and Figure 6-4) ...................................................................... 71
FULL TEST SETUP 1 Screen (Figure 6-5) ......................................................................................... 73
FULL TEST SETUP 2 Screen (Figure 6-6) ......................................................................................... 75
FULL TEST SETUP 3 Screen (Figure 6-7) ......................................................................................... 77
Transformer Test Result Screens (Figure 6-8 and Figure 6-9) .................................................. 79
Main Menu Screen When a Custom Transformer Setting Recalled (Figure 6-10) ......................... 82
SYSTEM SETUP Menu (Figure 6-11) ................................................................................................. 83
LANGUAGE Screen (Figure 6-12) ...................................................................................................... 84
SAVED DATA Screen (Figure 6-13) ................................................................................................... 85
Recall (or Save) Custom Transformer Settings (Figure 6-14) ............................................................ 86
Error Messages ......................................................................................................................................... 87
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