Power Transformer Protection

DGA TEST Dissolved Gas Analysis (DGA) is a diagnostic technique used to assess the condition of the mineral oil in power transformers. It involves analyzing the gases dissolved in the transformer oil to detect any potential faults or abnormalities. The most important parameters to look for in DGA are the concentrations of various gases present in the oil. The key gases and their respective fault indications are as follows: 1. Hydrogen (H2): The presence of hydrogen indicates potential overheating or partial discharges in the transformer. 2. Methane (CH4): Methane is a byproduct of thermal degradation or arcing. Its presence may indicate potential issues with the transformer's insulation. 3. Ethylene (C2H4): Ethylene is an indication of thermal degradation of paper insulation. 4. Acetylene (C2H2): The presence of acetylene is a strong indication of arcing in the transformer. 5. Ethane (C2H6):  Propane (C3H8), and Propylene (C3H6): These gases are produced due to more severe fault...