摘要:
A switching device assembly with a contact gap has a nozzle made of insulating material. The nozzle made of insulating material is formed with a nozzle channel that ends in a hot gas space. A deflector element is arranged within the hot gas space. The deflector element is supported inside the deflector channel.
摘要:
A switchgear includes a fixed contactor provided in a tank filled with insulating gas, and a movable contactor provided in the tank, the movable contactor being connected to and disconnected from the fixed contactor so as to move forward and backward. The switchgear includes an arc extinction member including a surrounding portion which is slidably connected to the outer circumferential surface of the movable contactor halfway in a movement range from a close contact state to an open contact state and is formed so as to surround an arc space portion in a sealed manner, the surrounding portion being formed with a through hole through which the arc space communicates with the outside of the arc space.
摘要:
An arc extinguishing device of a gas circuit breaker includes: an arc chamber in which an arc generated between a movable electrode and a fixed electrode is formed; a heat puffer chamber disposed so as to surround the arc chamber; a blow port in which the arc chamber communicates with the heat puffer chamber in the circumferential direction of the arc chamber; hydrogen absorbents which are disposed on an inner wall of a pressure chamber; an exhaust port which passes to the outside of an arc extinguishing chamber; and a hydrogen absorbent disposed at a position surrounding the movable electrode. Deterioration of insulation due to a product formed by decomposition of arc extinguishing gas by the arc during a contact opening operation can be suppressed.
摘要:
An improved puffer-type compressed-gas circuit interrupter includes a stationary tubular contact and a movable contact structure operably engageable with the stationary contact when the circuit interrupter is closed. A hollow nozzle directs a blast of compressed gas into the arc established between the stationary contact and the movable contact during opening. The nozzle in the interior thereof has a neck portion of predetermined diameter for directing the blast of compressed gas into the arc. The stationary contact has venting apertures therein of predetermined size and shape with at least a portion of the venting aperture means being within a predetermined section of the stationary contact. The stationary contact section has a length measured along the axis of the stationary contact equal to about three times the inside diameter of the stationary contact.
摘要:
A gas circuit breaker including a pair of main contacts is openable inside an insulating tank. A pair of arc contacts is arranged on the inner side of the main contacts, and a puffer cylinder has the main contacts and the arc contacts at an end. A puffer chamber is formed inside the puffer cylinder, and a puffer piston is provided on the inner periphery of the puffer cylinder. An insulating nozzle part is mounted on an end of the puffer cylinder to surround the arc contact. The insulating nozzle part includes a split nozzle base part and a split nozzle end part, and the split nozzle base part has a throat part.
摘要:
An interrupter unit of an electrical switching device has a flow-conducting body. Gases which are flowing away are guided by way of the flow-conducting body. The flow-conducting body is formed at least from a first and a second element, wherein a joint gap is formed between the two elements. The joint gap has a section, which is formed with a complementary shape between the two elements so as to form a labyrinth structure.
摘要:
An insulating blast nozzle for a circuit breaker, the circuit breaker having a first arcing contact and a second arcing contact that separate from each other when the circuit breaker is opened subsequent to prior separation of permanent contacts, said insulating blast nozzle being secured to one of the permanent contacts and being generally horn-shaped, having a throat and defining a volume of revolution having an upstream portion and a downstream portion joined by the throat, in which the inside volume is cylindrical and closed by the second arcing contact when the circuit breaker is closed and for a few milliseconds after the arcing contacts have separated, the wall of the nozzle in its portion defining the upstream portion of said volume of revolution surrounding said first arcing contact, the downstream portion of said volume comprising a first conical portion, wherein said first conical portion is followed by a second conical portion having a flare angle that is more open than that of said first conical portion.