What are the maintenance procedure for distribution transformer?
MAINTENANCE PROCEDURE
- Sludge, dust, dirt ,moisture can be removed by filtration.
- Oil when topped up shall be of the same make.
- Insulation resistance of the transformer should be checked once in 6 months.
- Megger values along with oil values indicate the condition of transformer.
What are the steps involved in installation and maintenance of power distribution transformer?
Operation of power transformers
- Standard and special transformer tests.
- Site considerations.
- Preliminary inspection upon receipt of transformer.
- Plan for the prevention of contaminants.
- Making connections that work.
- Controlling sound level.
- Make sure the transformer is grounded.
- Final inspection and testing.
Why silica gel is used in transformer?
The main function of silica gel is to control the amount of moisture available within a breather transformer. They are used to prevent any extra moisture from entering the transformer which may bring forth many unnecessary damaging effects to the transformer.
When should I replace silica gel in transformer?
When the silica gel is fully saturated, it will no longer absorb atmospheric moisture as it enters the transformer therefore the silica gel must be replaced.
What is the maintenance of a distribution transformer?
In the case of a distribution transformer, as they are operating light load condition all the time of day remaining peak hours, so there are no maintenance required. Maintenance of Current Transformer A Current Transformer or CT is very essential equipment installed in an electrical substation for electrical measurement and protection purpose.
What are the main components of a distribution transformer?
A distribution transformer may have one primary section and two or more secondary components, according to the purpose. All forms of transformers include two windings, and the distribution transformer is identical. It is classified into primary and secondary types. The primary one has a performance of drawing energy from the supply.
How to inspect the operation of distribution transformers?
Operation inspection measures of distribution transformers The distribution transformer in the running state usually emits a “humming” sound, which is uniform and slight. When the sound changes, it indicates that a certain fault has occurred in the distribution transformer.
What are the post-maintenance recommendations for the transformer?
5.3 Post-maintenance Recommendations It is recommended that the transformer is initially energised at No-load only and is checked for any abnormalities for the next 6 to 8 hours.