A Guided Workflow Approach to Transformer

Diagnostic Testing

Source: Courtesy of Waukesha Electric Systems, Inc. All rights reserved

Insulation

Main

Windings

Core

Tap Changer

Leads and

Components

Leakage

Channel

Clamping

Structure

Power Transformer Component Overview

Bushings and

Surge Arresters

Dielectric Thermal Mechanical

DGA DGA SFRA

Oil Screen Oil Screen Leakage Reactance

PF & CAP IR PF & CAP

Exciting Ima DC Winding RES Exciting Ima

Turns Ratio Tests DC Winding RES

DFR

Insulation Resistance

Partial Discharge

Power Transformer Diagnostic Overview

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Workflow Process

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Workflow Requirements

Minimum Required Input:

*Location/Substation Name

*Time and Date

*Work Order

*Serial Number

*Asset Type (2-Winding, 3-Winding, Auto, etc...)

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Test Plan Generation

Execute Test (TTR)

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Phase A

Phase B

Phase C

Analyze Results

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Generate Report

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Manage Data

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Advanced Analysis

0.00%

0.05%

0.10%

0.15%

0.20%

0.25%

0.30%

0.35%

0.40%

0.45%

0.50%

CHL Power Factor

20151960 1985

Thank you for your time!