How often is the filter element of the transformer oil vacuum oil filter changed?
Usually a good filter can be cleaned and reused later until it is broken. Some are changed only once a year, and some half a year, according to the oil,
If the oil is very dirty, recommended for cleaning, if not timely replacement of the cleaning of the filter sludge filter blocked, causing pressure to filter limit rupture, and no way to clean, only for the new.
How long is the filter element of the transformer oil vacuum filter? There is no definite time
