With increasing rating requirements of latest transformers and power equipments, insulating material and fluids are experiencing the greater electrical stress. To manage such greater stress, it is important to have good electric strength for transformer oil along with lower water residue. When user takes help of transformer oil filtration method whenever required, he promotes long life and efficiency of the machine. Timely and proper treatment and maintenance of these insulating fluids enhance the properties of the entire power transformers’ insulating system.
Why Oil Is Used In The Transformer? Why It Needs To Be Clean And Well Maintained?
The basic functions of oil are that it works as an insulating fluid and as a dielectric stuff and also an effective coolant. To carry out these functions, the insulating fluid must have all required qualities at the initial impregnation time and should have all standard qualities to deliver optimum performance in field operation.
Contaminated transformer oil is prone to lose dielectric strength and resistivity. To eliminate contamination from the transformer, manufacturers intend oil conditioning plant that treats transformer oil and make it useful for customers. The filtration plants used by service centers are equipped with qualified components that ensure relevant IS standards. The plant has all of these parts-
- Preliminary magnetic strainer
- Filter vessel
- Filter cartridges
- Inlet feed gear pump
- Thermostatically controlled electric heaters
- Degassing chamber
- Outlet centrifugal gland less pump
- Vacuum pump
- Optical level monitor that controls foam
- Vacuum gauge
- Compound gauge
- Temperature gauge
- Set of valves
- Control panel
To keep every part in good condition and maintain it for long, servicing centers often perform transformer oil filtration operations and are used to promote their services among customers. The filtration method is effective and highly efficient for eliminating dissolved gases and moisture along with dust particles.
As per the market report, nearly 75% of transformer failures occur because of low quality transformer oil. For durable and high performance of these devices, customer will always need to purify and filter oil prior making any use of it. Proper maintenance will save you from paying hefty repairing bills and will lead to expected results. When you ignore or skip regular filtration process, it may lead to-
- Corona discharges
- Lower insulating strength
This is why it is always recommended by leading experts to perform filtration method for transformer oil in order to achieve all benefits and advantages.