Electrifying Electrologic!!!

Table 17.—Transformer Test Summary Chart Part to be Tested Test to be Performed Windings Resistance Across Windings Turns Ratio/Polarity/Pha...

4.7 Transformer Testing When the transformer is new before energizing and every 3 to 5 years, the transformer and bushings should be Doble...

4.6.8 Silicone Oil-Filled Transformers. Silicone oils became more common when PCBs were discontinued. They are mainly used in transformers...

4.6.7 Taking Oil Samples for DGA. Sampling procedures and lab handling are usually areas that cause the most problems in getting an accurat...

4.6 Transformer Oil Tests That Should Be Done Annually With the Dissolved Gas Analysis.  4.6.1 Dielectric Strength. This test measures t...

4.5 Moisture Problems  Moisture, especially in the presence of oxygen, is extremely hazardous to transformer insulation. Each DGA and Do...

4.4.5 Rogers Ratio Method of DGA . Rogers Ratio Method of DGA [18] is an additional tool that may be used to look at dissolved gases in tr...