Abstract:
Provided is a power cable, particularly, an ultra-high voltage underground or submarine cable for long-distance direct-current transmission. More specifically, the present invention relates to a power cable, in which an insulating layer has high dielectric strength, an electric field applied to the insulating layer is effectively reduced, and particularly, a void is suppressed from occurring in the insulating layer due to contraction of insulating oil, caused by a decrease of temperature in the insulating layer under a low-temperature condition or when the supply of an electric current is stopped, thereby effectively suppressing partial discharge, dielectric breakdown, etc. due to an electric field concentrated in the void.
Abstract:
There is described an electrical isolator comprising a first fluid-carrying member and a second fluid-carrying member spaced apart from said first fluid-carrying member, a resistive, semi-conductive or non-conductive component located between and sealed against said first and second fluid-carrying member, wherein said resistive, semi-conductive or non-conductive component is adapted to convey fluid flowing from said first fluid-carrying member to said second fluid-carrying member, a reinforcing composite encircling said first fluid-carrying member, said second fluid-carrying member and said resistive, semi-conductive or non-conductive component, wherein said reinforcing composite is continuous and provides a conductive path between said first fluid-carrying member and said second fluid-carrying member, wherein said reinforcing composite comprises fibre and a resin mixture, and said resin mixture comprises resin and a conductive additive.
Abstract:
Electrical equipment including insulating fluid and having isoparaffins derived from a renewable carbon source, the fluid having a flash point of at least 210° C. and comprising at least 70 wt % of the isoparaffins. The electrical equipment can be installed and operated subsea.
Abstract:
An exemplary oil transformer insulation module includes at least a first flat layer and a second layer adjacent and substantially and parallel to the first layer. The first and second layers include planar first insulation material and are connected to and spaced apart from a third corrugated layer that is arranged between the first and second layers. The third layer includes planar second insulation material, has lateral edges, and is corrugated such that all the cavities formed by the corrugated form can be flooded with a liquid via the lateral edges.
Abstract:
An apparatus includes a cable track configured to be coupled to a moveable object and to be pushed and pulled by the movable object without buckling. The cable track is configured to transport at least one signal or material to or from the moveable object. The cable track has a fluid compartment defined between walls of the cable track. The walls of the cable track are configured to be separated when fluid is inserted into the fluid compartment and to approach one another in a bent portion of the cable track. The cable track may further include a web coupled to the walls, where the web is configured to limit the separation of the walls.
Abstract:
The present invention provides an electric insulation device of an air conditioner divided into an indoor unit and an outdoor unit which can improve work efficiency during installation of the indoor unit and the outdoor unit. An electric insulation device is arranged between a gas side connection line and a gas side refrigerant line of an outdoor unit, and electrically insulates the gas side connection line and the gas side refrigerant line on the outdoor unit side. The electric insulation device includes a refrigerant line connection portion that is connected to a gas side refrigerant line of the indoor unit, a connection line connection portion that is connected to the gas side connection line, an insulation portion capable of both electrically insulating the refrigerant line connection portion and the gas side connection line and circulating refrigerant, and a terminal portion on which an electric connection line is mounted.
Abstract:
An oil filled electric bushing consists of an elongated, tubular insulator, through which an electric conductor extends. The conductor is provided at one of its ends with a terminal assembly comprising an inner tap firmly joined to the conductor and an external terminal tap threaded on to the inner tap and pressed against an end seal member. A resilient tubular locking pin holds the inner tap in a fixed position in relation to the end seal member.