Patent ID: 7755868
Filing Date: 2010-07-13
Classification: H01F,H01H,H02H

Abstract:
1. An electrical equipment device of an electricity distribution network, the device comprising: a tank insulated with an insulation comprising a dielectric liquid, wherein the liquid at least partially fills the tank, the tank having a circuit to generate a signal based on at least one input phase; an input for each phase; an output; an electrical path connecting the inputs and the output; an over-current protection device on the electrical path between the one or more inputs and the output; and a short-circuiting device associated with at least one failure detector, configured to detect a failure due to a fault in the insulation, the short-circuiting device being configured to establish a short circuit in the one or more phases if there is an event indicative of the detection of the failure, wherein no over-current protection device, no control element, and no transformer is on the path between the short circuit and the input, wherein the short-circuiting device is configured to establish the short circuit independent of the function of the over-current protection device, and the short circuit does not cause an over-current condition in the over-current protection device.