What are the factors that affect the breakdown voltage of the transformer oil?
The considered factors that affect the breakdown voltages are temperature, permittivity, tan δ, viscosity, velocity of the particles. The gap length is considered as 10mm and the factors are optimized around breakdown voltage of 50KV.
Which of the following affects the breakdown voltage of the transformer oil most *?
In addition, the shape of the electrodes, the size of the electrodes, the distance between the electrodes, and the shape and capacity of the oil cup all have an effect on the breakdown voltage.
What is gaseous breakdown?
Gases. Electrical breakdown occurs within a gas when the dielectric strength of the gas is exceeded. Regions of intense voltage gradients can cause nearby gas to partially ionize and begin conducting. This is done deliberately in low pressure discharges such as in fluorescent lights.
What is breakdown voltage in transformer oil?
Breakdown voltage (dielectric strength) is one of the most important parameters of transformer oil. It is measured when the transformer is taken into use and typically monitored by sampling during its operational lifetime. Breakdown voltage is affected by several factors, such as moisture, particles, acidity, and pressure.
What is the dielectric strength of transformer oil?
Dielectric Strength of Transformer Oil. The dielectric strength of transformer oil is also known as the breakdown voltage (BDV) of transformer oil. Breakdown voltage is measured by observing at what voltage, sparking strands between two electrodes immersed in the oil, separated by a specific gap.
What are the factors affecting the breakdown voltage of a transformer?
Breakdown voltage is affected by several factors, such as moisture, particles, acidity, and pressure. Dielectric strength of transformer oil is mainly determined by the presence of fiber and water, so the mechanical impurities and water in such oils must be completely absent. The dielectric strength of the oil decreases with time.
What is the breakdown voltage strength (BDV) of oil?
The final part of the basic oil quality assessment trio (along with Moisture & Acidity) is the Breakdown Voltage Strength otherwise known as the BDV. The BDV is an important factor in understanding the quality of the oil and is affected in many ways.