Electro-Magnetic World

Rogers Ratio Method of DGA is an additional tool that may be used to look at dissolved gases in transformer oil. Rogers Ratio Method compar...

Origin of the Duval Triangle Michel Duval of Hydro Quebec developed this method in the 1960s using a database of thousands of DGAs and tra...

When sudden increases occur in dissolved gases, the procedures recommended in table on Picture 2 in Key Gas Method should be followed. Th...

The key gas method of interpreting DGA is set forth in IEEE. Key gases formed by degradation of oil and paper insulation are hydrogen (H 2 ...

Transformer Oil Functions Transformer oils perform at least four functions for the transformer. Oil provides insulation, provides cooling,...

If proper bolt tightening sequences are not followed or if improper torque is applied to the bolts, sealing problems will result (see Pictu...

Rectangular nitrile gaskets larger than sheet stock on hand can be fabricated by cutting strips and corners with a table saw or a utility k...