From Converter Load-Loss Tests to Service Losses
A load-loss test value is a baseline measurem…
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Harmonic Leakage Flux in Transformer Structural Parts
Structural heating depends on where harmonic …
Read full articleTwelve-Pulse Groups: Diagnose Unequal Harmonic Cancellation
Cancellation depends on the actual phase and …
Read full articleHow a DC-Line Fault Reaches LCC Transformer Windings
Not every ampere at a DC fault comes through …
Read full articleConverter Valve Faults and Local Winding Forces
The valve-fault location determines the curre…
Read full articleCommutation Failure: Reconstruct the Winding Currents
A commutation failure label does not define t…
Read full articleLCC Misfire Location and DC Ampere-Turn Imbalance
A misfired valve affects transformer magnetiz…
Read full articleLocal DC Fields at Oil-Pressboard Barrier Edges
Average volts per gap can miss the field conc…
Read full articlePolarity Reversal: Preserve the Barrier Test History
Two polarity-reversal tests can have the same…
Read full articleDC Field Sharing Between Oil and Pressboard
The field division after a DC step can differ…
Read full articleCan a Spare GSU Cover Different Generator Voltages?
A shared spare must fit both the voltage enve…
Read full articleLCC Valve-Side Winding Potentials: AC Plus DC
An LCC winding potential map needs a named br…
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