doble M4110 - Introduction to Leakage Reactance Testing

M4110 Leakage Reactance Interface User Guide
72A-2243-01 Rev. B 9/04 v
September 17, 2004
1. Introduction To Leakage Reactance Testing
M4110 Leakage Reactance Interface ................................................................................................. 1-1
Installing the Software........................................................................................................................ 1-2
What You will Need for the Test........................................................................................................ 1-2
2. Understanding Leakage Reactance Testing
Introduction ........................................................................................................................................ 2-1
Failure Modes..................................................................................................................................... 2-3
How Results are Calculated................................................................................................................ 2-5
Three-phase Equivalent Test........................................................................................................ 2-5
Per-phase Test .............................................................................................................................. 2-5
Single-phase Two-winding Test...................................................................................................2-5
3. Leakage Reactance Test Procedures
Test Considerations ............................................................................................................................ 3-1
Information Needed Before Running a Test....................................................................................... 3-1
Test Voltages...................................................................................................................................... 3-2
Selecting the Test Method.................................................................................................................. 3-2
Special Considerations................................................................................................................. 3-3
Test Connections.......................................................................................................................... 3-3
Test Procedures for a Two-winding Three-phase Unit ...................................................................... 3-4
Three-phase Equivalent Test........................................................................................................ 3-5
Per-phase Test .............................................................................................................................. 3-5
Test Procedures for a Two-winding Single-phase Unit...................................................................... 3-5
Test Procedures for a Multi-winding Unit.......................................................................................... 3-5
Test Setup Using the M4110 or the M4130 ..................................................................................... 3-11
Setup for a Single-Phase Transformer Test, M4110.................................................................. 3-11
Setup for a Single-Phase Transformer Test Using the M4130................................................... 3-12
Setup for a Three-Phase Transformer Test Using the M4110 ................................................... 3-12
Setup for a Three-Phase Transformer Test Using the M4130 ................................................... 3-13
Setup for a Transformer with Three or More Windings ............................................................ 3-14
Running a Test.................................................................................................................................. 3-14