MOISTURE EQUILIBRIUM IN OILPAPER INSULATION OF TRANSFORMER - PowerPoint PPT Presentation

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MOISTURE EQUILIBRIUM IN OILPAPER INSULATION OF TRANSFORMER

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Title: MOISTURE EQUILIBRIUM IN OILPAPER INSULATION OF TRANSFORMER


1
PRESENTER
MOISTURE EQUILIBRIUM IN OIL-PAPER INSULATION OF
TRANSFORMER
NG KEK LOON
INTRODUCTION
THE PRSENCE OF MOISTURE IN A TRANSFORMER
DETERIORATES TRANSFORMER INSULATION BY DECREASING
BOTH ITS MECHANICAL AND ELECTRICAL STRENGTH. IT
IS IMPORTANT TO DETECT MOISTURE IN THE
TRANSFORMER DETECTION OF MOISTURE IN THE
TRANSFORMER WILL PRODUCE ERRONEOUS RESULT IF THE
OIL-PAPER INSULATION IS NOT IN THE STATE OF
MOISTURE EQUILIBRIUM
PROCEDURE
  • PAPER INSULATION CONDITIONED TO THE REQUIRED
    MOISTURE LEVEL
  • OIL IMPREGNATED WITH DRY AND DEGASSED OIL
  • MONITERED USING THE IPS RVM
  • RESULTS USED TO DETERMINED IF MOISTURE
    EQUILIBRIUM IS REACHED IN THE OIL-PAPER SYSTEM

MOISTURE CONDITIONING SET UP
RVM SETUP
  • SHOWS THE MOISTURE DYNAMIC PROCESS OF WATER IN
    THE OIL- PAPER INSULATION
  • IS ABLE TO DETERMINE MOISTURE EQUILIBRIUM
  • PROVIDES CONFIDENCE IN MEASURING THE MOISTURE
    LEVEL IN THE PAPER.

INTERFACIAL POLARIZATION SPECTRA
D E T E R M I N E M O IST U R E E Q U L I
L B R I U M
BY RETURN VOLATAGE MEASUREMENT
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