Oil filling process programmed to start filling only   after vacuum condition of 0.5 mbar for 0-50 minutes is reached, and to stop   when each float switch in transformer has been reached.

Filling should be done from the bottom of transformer   tanks, through the tank oil drain.

Customer connect oil pipe to oil storage tank (Ф1200mm×2100mm)   on vacuum chamber.

Total 6 filling lines, connected to chamber walls (not   from top of chamber)

Each filling line shall comprise :

Flow meter for recording flow rate

Pneumatic valve for oil filling

Float switch to switch off filling process

Connecting hose, filter and manual valve

Filling hose（DN15）

Chamber equipped with 1 extra flexible hose with tap   valve for manually operated oil filling

Chamber quipped with leakage oil collecting vessel   connected to float switch :

Float switch to switch off filling process in case of   overfill or leakage of transformer tank

Oil filling process   can be automatically and manually.

When it is   automatic, oil filling amount can be set via pneumatic valve.

When it is up to   setting value, valve will be closed automatically.

One   each oil-filling line, equipped a manual valve used for regualting flow rate.

All control of oil   filling will be combined in main control cabinet.

All ball valves are   stainless.