The invention relates to an insulator core chamber sealing device and a
current sensor /
transformer with the same. The insulator core chamber sealing device is used for sealing an insulator core chamber inserted with an
optical fiber, and the insulator core chamber is filled with fluid or semi-fluid insulating liquid. The device comprises a waterproof connector, a sleeve, a sleeve cap and filler, the waterproof connector is in
butt joint with a
flange at the end of an insulator, the sleeve is inserted into the waterproof connector and clamped with the waterproof connector, holes allowing the
optical fiber to penetrate are formed in end faces of both sides of the sleeve, the filler is arranged in the sleeve, fixes the
optical fiber in the sleeve and functions in sealing, the sleeve cap is mounted at the
tail end of the sleeve, and a hole allowing the optical
fiber to penetrate is formed in the end face of the sleeve cap. The device can achieve sealability of the fluid / semi-fluid insulating liquid in the insulator core chamber for penetration of the optical
fiber to further guarantee normal operation of a
power grid, and has the advantages of simple structure, low
processing cost, easiness in operation, high efficiency, safety and the like.