How often should transformer oil be changed?
Dissolve Gas Analysis of transformer oil should be done annually for 132kv transformer, once in 2 years for the transformer below 132kv transformer, and once in 2 years for the transformer above 132kv transformer.
What is transformer maintenance schedule?
Transformer Maintenance on a Half Yearly Basis Your electrical transformer needs to be checked every 6 months for IFT, DDA, flash point, sludge content, acidity, water content and dielectric strength along with how resistant it is to transformer oil.
How often should you test transformer oil?
twice a year
When? Routine testing of transformer oils and insulating oils on a regular schedule is an accepted industry practice. General and physical tests are suggested twice a year, dissolved gas analysis once a year, and Furan testing every 2 years for transformers in operation at least 5 years.
How often should transformer oil be filtered?
Annually for 132 KV transformer, once in 2 years for the transformer below 132 KV transformer and in 2 years interval for the transformer above 132 KV transformer.
How long does an oil transformer last?
The simplest solution is to refer to manufacturer information. Usual transformer oil storage time is five years from the date of production. After five years, the oil product loses its performance quality.
What is the preventive maintenance of transformer?
Transformer preventative maintenance involves routine inspection, adjustment, testing, minor fixes, and special handling instructions. Also, the trouble- free service of the equipment over its life depends on proper installation, operation, and maintenance. This philosophy is based on reactionary operation mode.
What are the basic steps of transformer maintenance?
How do you maintain a transformer?
Maintenance of Transformer on Half Yearly Basis The transformer oil must be checked half yearly basis that means once in 6 months, for dielectric strength, water content, acidity, sludge content, flash point, DDA, IFT, resistivity for transformer oil.
What is the life of transformer oil?
In general, a transformer’s service life is determined by its performance characteristics and life expectancy of its dielectric insulating oil which is approximately 20 years.
What should be the BDV value of transformer oil?
A typical value of BDV Test result for 220 / 6.6 kV Transformer oil is 65 kV and moisture content should be less than 10 ppm. BDV is an important and popular test of transformer oil, as it is the primary indicator of the health of oil and it can be easily carried out at the site.
What is BDV test of transformer oil?
BDV test means the Breakdown Voltage Test. This test is performed for verifying the dielectric strength of the oil of the transformer. Dielectric Strength is the maximum capacity to resist the voltage of insulating oil.
Does transformer oil last forever?
Usual transformer oil storage time is five years from the date of production. After five years, the oil product loses its performance quality. Attempts to improve the situation by using additives are futile, the additive components simply precipitate from the oil.