File Size: 3.7 MB
Pages:-62
File Type :- Pdf
TABLE OF CONTENTS
- INTRODUCTION / SAFETY
- Purpose
- scope
- References
- Maintenance and tesdng
- safety
- Nameplatedata
- CONSTRUCTIONlTHEORY
Transfomer applications
Magnetic flux
Winding,current and voltage ratios
Core construction
Core form construction
Shell form construction
TRANSFORMER CONNECTIONS AND TAPS
Tapped Primaries and secondaries
Polarity
Autotransfomers
Single and multi-phase relationships
Delta-wye and wye-delta displacements - COOLING CONSTRUCTION CLASSIFlCATIONS
Classifications
Dry-type transfomers
Liquid-filled transformers
Tank construction
Free breathing tanks
Consevator tank
Gas-oil sealed tank
Automatic inet gas sealed tanks
Sealed tank type - INSULATING FLUIDS
Oil
Oil testing
Dissolved gas in oil analysis
Transformer oil sampling
Synthetics and other insulating fluids - INITIAL ACCEPTANCE INSPECTION TESTING
Acceptance
Pre arrival preparations
Receiving and inspection
Moving and storage
Internal inspection
Testing for leaks
Vacuum filling - TRANSFORMER TESTING
Test data
Direc tcurrent testing
Alternating current testing - TRANSFORMER AUXILIARY EQUIPMENT
Auxiliaries
Bushings
Pressure relief devices
Pressure gauges
Temperature gauges
Tap changers
Lightning (surge) arresters - COMPREHENSIVE MAlNTENANC / TESTING PROGRAM
Transformer maintenance
Maintenance and testing program
Documentation
Scheduling - STATUS OF TRANSFORMER MONITORING AND DIAGNOSTICS
Introduction
Transformer Monitoring
Transformer diagnostics
Conclusions
REFERENCES
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