What maintenance is done on transformer?
What maintenance is done on transformer?
Transformer Maintenance Checks on a Monthly Basis Oil level in the oil cap must be checked on a monthly basis so that it doesn’t drop below a fixed limit and hence avoid damage due to it. Keep the breathing holes in the silica gel breather clean to ensure proper breathing action at all times.
What are the basic steps of transformer maintenance?
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.
Does a transformer need maintenance?
Modern transformers are designed to closer tolerances than transformers in the past. Thus, effective, regular maintenance and testing is even more essential to continued operation when traditional “overdesign” cannot be relied on to overcome abnormal conditions.
How often should transformers be inspected?
Every three to five years, examine the top of the transformer device around the pressure relief tank to ensure there are no leaks.
What is type of preventive maintenance?
We’ll explore these in detail in the next section, but a few types include time-based maintenance, usage-based maintenance, predictive maintenance, and prescriptive maintenance.
What are the daily check of transformer?
There are three main things which to be checked on a power transformer on a daily basis:
- Reading of MOG (Magnetic Oil Gauge) of main tank and conservator tank.
- Color of silica gel in breather.
- Leakage of oil from any point of a transformer.
How do you clean a transformer?
The windings may be cleaned with a vacuum cleaner, blower, or compressed air. The use of a vacuum cleaner is preferred. The compressed air should be clean, dry and should be applied at a relatively low pressure, (not over 25 psi.).
How do you check oil level in transformer?
To check the level indicator, remove the outside mechanism for testing without lowering transformer oil. After removing the gauge, hold a magnet on the back of the dial and rotate the magnet; the dial indicator should also rotate. If it fails to respond or if it drags or sticks, replace it.
Which transformer oil is best?
Naphthenic mineral oil has long been the most preferred insulating liquid for power transformer insulation because it has a good pouring point at low temperatures, good thermal cooling capacity, low cost, high efficiency and availability on the transformers market [1, 2, 3, 7].
Which oil is used in transformer oil?
Mineral oil and Synthetic oil are the majorly used transformer oil. These are the petroleum products, like Naphthenic based transformer oil and Paraffinic based transformer oil. Naphthenic based transformer oils are known for their heat distribution, which is one of the main problems with transformer.
Why oil is used in a transformer?
What is transformer oil? Transformer oil is used to insulate high-voltage electrical infrastructure such as transformers, capacitors, switches and circuit breakers. Transformer oils are designed to operate effectively at very high temperatures, cooling, insulating, and stopping corona discharges and arcing.
What is normal oil level of transformer?
There is usually a mark on the gauge that indicates the 25°C level, which is the proper oil level at that temperature. Maintaining the proper oil level is extremely important because if the oil level falls below the level of the radiator inlet, flow through the radiator will cease and the transformer will overheat.