摘要:
A switch-fuse module and a ring main unit. The switch-fuse module includes: a housing having therein a first enclosure including a first insulating gas and a second enclosure including a second insulating gas; at least one switch disconnector arranged within the first enclosure; and at least one fuse at least partially surrounded by the second enclosure; wherein each of the first insulating gas and the second insulating gas has a global warming potential less than a global warming potential of SF6, and the first enclosure is different and separate from the second enclosure.
摘要:
The present invention relates to medium- or high-voltage equipment having low environmental impact, including a leaktight enclosure in which there are located electrical components covered with a solid dielectric layer of varying thickness and a gaseous medium for providing electrical insulation and/or for extinguishing electric arcs that are likely to occur in said enclosure, and that comprises heptafluoroisobutyronitrile in a mixture with a dilution gas.
摘要:
The present invention relates to medium- or high-voltage equipment comprising a leaktight enclosure in which there are located electrical components and a gas mixture for providing electrical insulation and/or for extinguishing electric arcs that are likely to occur in the enclosure, the gas mixture comprising heptafluoroisobutyronitrile and tetrafluoromethane. Electrical components covered in solid dielectric layers of varying thickness are located inside the leaktight enclosure of the equipment of the invention.
摘要:
A vacuum circuit breaker includes a ground tank, first and second vacuum interrupters, a link mechanism for opening and closing the vacuum interrupters and a link mechanism case housing the link mechanism and supported by an insulating support tube. An insulating operation rod for operating the link mechanism is provided through the insulating support tube and a side portion of the ground tank. An operation room is provided around the portion of the ground tank through which the insulating operation rod is inserted. A conversion mechanism for driving the insulating operation rod is arranged in the operation room. A space communicating with inner sides of bellows of the vacuum interrupters (including the inside of the link mechanism case and the inside of the insulating support tube) is filled with insulating gas of 0.3 MPa or lower. The other space is filled with insulating gas of higher pressure.
摘要:
A breaking chamber (1) for a medium- or high-voltage circuit breaker extending along a longitudinal axis (XX′) and comprising: a pair of arcing contact (4, 5), at least one (5) of which is movable along the longitudinal axis (XX′); an arc-blast nozzle (6); a blast chamber (7), having a volume V2 that is constant and that opens out inside the blast nozzle; a compression chamber (8), arranged substantially behind the blast chamber, and structures (73, 81) for putting the internal volume of the compression chamber (8) into communication with the internal volume of the blast chamber (7); and structures (14, 15, 50), disposed substantially behind the compression chamber (8), in order to deliver liquid, either into the compression chamber (8), or directly into the blast chamber (7).
摘要:
An apparatus for the generation, the distribution or the usage of electrical energy, the apparatus including a housing enclosing an insulating space and an electrical component arranged in the insulating space. The insulating space contains a dielectric insulation gas including an organofluorine compound A. The apparatus further includes a molecular sieve arranged such as to come into contact with the insulation gas. The molecular sieve has an average pore size y greater than the molecular size of at least one decomposition product of the organofluorine compound A generated during operation of the apparatus. The adsorption capability of the molecular sieve for organofluorine compound A is lower than for the at least one decomposition product. The apparatus further includes at least one desiccant arranged such as to come into contact with the insulation gas.
摘要:
A method and device for operating a fluid-insulated electrical apparatus. The insulation fluid of the electrical apparatus includes at least two components. The method includes the step of determining a physical state of the insulation fluid by measuring at least three measurement variables with sensors. The method further includes the step of deriving trend variables indicative of changes over time for the measurement variables and/or for characterizing variables. These characterizing variables are derived from the measurement variables by using a relating equation, such as an equation of state, and are also indicative of the physical state of the insulation fluid. By testing for specific patterns of the trend variables, an operating state of the electrical apparatus is determined. The possible operating states correspond to specific and distinguishable non-fault and fault scenarios for the electrical apparatus. Thus, operating states can be distinguished and trouble-shooting in case of a failure is simplified.
摘要:
A solid insulated switchgear having at least one circuit switches for switching a three-pole AC circuit includes a plurality of bus-bars for pole. Each of the bus-bars for pole being providing correspondingly for each pole comprises a ring-shaped bus-bar portion electrically connecting the arc extinguishing mechanisms for the same pole, and each having an internal electrical conductor portion and an external solid insulated mold portion in which the conductor portion is built; and a plurality of extended connecting portions respectively extended from the ring-shaped bus-bar portion while being space apart from one another in a circumferential direction so that the plurality of circuit switches are connected in the state in which the plurality of circuit switches are separated from one another.
摘要:
According to an embodiment, a gas insulated electrical equipment includes: a high-voltage conductor to be electrically charged; a hermetically sealed tank to be filled with insulating gas, one or more insulating spacers for dividing the hermetically sealed tank into gas compartments and supporting the high-voltage conductor; and a pressure release device equipped with a mouth of flow channel adapted to allow the inside and the outside of the hermetically sealed tank to communicate with each other so as to release the pressure in the hermetically sealed tank, which maintains the hermetically sealed state in an ordinary condition where the pressure in a gas compartment does not exceed the working pressure but releases the pressure in the hermetically sealed tank in an abnormal condition where the pressure in the gas compartment exceeds the working pressure.
摘要:
An electrical apparatus for a medium- to high-voltage current transport line having a gas insulation including: a sealed housing filled with an electrically insulating gas including at least one fluorinated compound such as a fluoroketone, at least one electrical component arranged inside the inner space of the housing, and a mechanism regulating an amount of the fluorinated compound inside the inner space of the housing. The regulating mechanism includes a heater, heating a liquid resulting from condensation of the fluorinated product present in the insulating gas, to cause at least a portion of the liquid to vaporize.