Patent ID: 8854053

Claim:
An apparatus for analyzing a state of an oil-filled electrical device, simulating a state of an oil-filled electrical device having a copper wire wrapped with insulating paper immersed in insulating oil, comprising: a first paper-covered copper wire including a first copper wire and first insulating paper wrapped around said first copper wire, said first insulating paper being formed of the same material as the insulating paper held in said oil-filled electrical device; an electrode arranged adjacent to said first paper-covered copper wire; a tank containing said first paper-covered copper wire, said electrode and insulating oil extracted from said oil-filled electrical device, so that said first paper-covered copper wire and said electrode are immersed in said insulating oil extracted from said oil-filled electrical device; and a capacitance measuring unit for measuring electrostatic capacitance between said first paper-covered copper wire and said electrode.