A transformer vacuum oil filter

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PURPOSE : A vacuum oil filter for a transformer is provided to induce the continuous operation of a sucking pump by controlling the RPM of the sucking pump and controlling the introducing amount of insulting oil into a storage. CONSTITUTION : A sucking pump(2) sucks insulting oil(1). A plurality of filters(4) is arranged on the flow path(3) of the sucked insulting oil and eliminates particles from the insulting oil. A storage(6) stores the sucked insulting oil. An operation controlling part(10) controls the sucking pump. A discharging pump(8) sucks the insulting oil from the storage and discharges the insulting oil to the outside. The operation controlling part includes insulting oil level sensors measuring the level of insulting oil in the storage.