90results about "Arrangements with resin casing" patented technology

It is an object to provide a switchgear capable of alleviating burden to a manager. In order to solve the aforementioned problem, the switchgear according to the present invention includes a plurality of compatible switch units each provided in a housing and closing/interrupting/ground functions so that the plurality of switch units are connected to supply power to the load side.

The invention discloses a solid insulated totally-enclosed ring main unit, which comprises at least a line of leading-in unit and at least a line of leading-out unit, and each line of switch comprises a 3-phase high-voltage vacuum switch unit. The high-voltage vacuum switch consists of a housing fixed inside a box body, and a main switch and an isolator arranged in the housing, wherein, the housing is made of epoxy resin, and a copper joint pin of the main switch and the outside of a busbar connected with the copper joint pin are coated with silicon rubber layers. The ring main unit of the invention adopts a totally enclosed design, which causes the ring main unit to have a smaller volume and compact structure, and to be safe and reliable; the probability of leakage and discharge is low, thus improving the insulation class, and the ring main unit has obvious effect on saving energy and materials; air, moisture, dust and hot and cool air sources are isolated, which effectively retards the corrosion of a power source body, stabilizes the output of source voltage, decreases the times of the device maintenance, reduces expense cost and prolongs the service life of the ring main unit.

Disclosed are a solid-insulated disconnection switch and a solid-insulated switchgear using the same. The solid-insulated switchgear using the solid-insulated disconnection switch according to the present invention can have an eco-friendly characteristic and a small size by solid-insulating each unit, a disconnection switches and earth switch constituting each unit.

In the solid-insulated switchgear according to the present invention, each unit and each part constituting each unit are standardized so as to be interchangeable to each other, thereby implementing a simple manufacture.

Furthermore, the solid-insulated switchgear can be manufactured according to an installation environment and a user's various demands, and can have an enhanced maintenance/repair characteristic.

The present invention discloses a switch cabinet connection and combination apparatus, wherein upper line-in/line-out terminals of a medium-voltage switch cabinet are connected to upper contact boxes via a conductor, and lower line-in/line-out terminals thereof are connected to lower contact boxes via the conductor, and remaining gaps to be insulated are filled with a solid insulating material. The present invention further discloses a method of manufacturing a switch cabinet connection and combination apparatus including the steps of: connecting upper line-in/line-out terminals of a medium-voltage switch cabinet via a conductor to upper contact boxes; connecting lower line-in/line-out terminals thereof via the conductor to lower contact boxes; and pouring a solid insulating material for molding. The present invention realizes high reliability, small volume, and no pollution of the medium-voltage switch cabinet.

The invention discloses a completely-sealed and complete-solid insulation ring main unit, belonging to the field of electrical transmission. The insulation ring main unit comprises a unit body, a circuit breaker body, a breaker operating mechanism and the like, wherein a box-sharing and four-bin structure is adopted for the breaker body, which comprises a body, an isolated grounding switch, an upper outgoing wire seat, a vacuum quenching chamber and an outgoing wire sleeve. The upper outgoing wire seat, the vacuum quenching chamber and the outgoing sleeve are fixedly sealed in the body; the body is formed by an operating box and an upper cover through a sealing ring piece in a sealing manner; the upper outgoing wire seat and the vacuum quenching chamber are fixedly sealed and connected in a pouring way; the breaker operating mechanism is arranged in a mechanism box, and one side of the mechanism box is provided with a gate plate with a sealing component; and the mechanism box and the body are connected through the sealing component. By the adoption of the completely-sealed and complete-solid insulation ring main unit, by designing all high-voltage electrical elements in the solid ring main unit into an epoxy resin box body, by the adoption of the sealing component to carry out sealing in a connecting position, the solid ring main unit is enabled to have excellent sealing performance, and can be configured and used in the sand ground with many rains and winds.

A switchgear case is partitioned into a high voltage bus bar chamber, which contains bus bars and cable heads, a high voltage device chamber containing circuit breakers and operation mechanisms and a low voltage control chamber containing a relay and measurement devices, etc., A rear wall of the case has a first suction port disposed at a lower part thereof, wherein the high voltage bus bar chamber, high voltage device chamber and the low voltage control chamber are communicated and air passing through the chambers is discharged from a first discharging port of the casing. The bus bars electrically connecting the high voltage devices in the high voltage device chamber and connecting bars connecting the adjoining bus bars and the cable heads are covered with solid insulators for solid-insulation.

The invention discloses a three-position solid insulation switchgear. The three-position solid insulation switchgear comprises an A-phase main loop box body, a B-phase main loop box body and a C-phase main loop box body, the A-phase main loop box body, the B-phase main loop box body and the C-phase main loop box body are assembled together in a parallel mode and share a main shaft, the main shaft is rotated to drive a separation cutter to swing around a static contact seat through a turning handle and a separation cutter insulation draw rod, and the separation cutter is made to carry out switching contact between an input end and a grounding static contact or to stay between the input end and the grounding static contact to form a separation position. Due to the fact that the three-position solid insulation switchgear is used, a three-position switch function can be effectively achieved through the separation cutter, a main shaft is used for being rotated in multiple isolation pieces, the structure is simple, and the operation is convenient; three working positions can be seen through an observation window; damp-proof measures are arranged inside an insulation shell, and a damp-proof box is replaced by observing the condition that drying agents in a drying agent box are damped and deepened.

A switchgear includes a chassis which is partitioned by metal earthed plates and includes a bus bar section located at a central portion, a switch section located below the bus bar section, a cable section located at a rear surface side, and a control section located at a front surface side; an air-insulated earthed disconnecting switch provided in the switch section; and a manipulating device. The switch section is separable from the chassis, and is configured as a case having a semi-closed structure which allows air to pass therethrough but prevents particles of oil and water from passing therethrough.

Single phase or polyphase switchgear having one or more switches which are mounted with the aid of solid insulation such that they are insulated, as well as associated live components such as rail systems, connectors and the like. Both the switches and the associated live components are housed in a housing enveloping the switches and live components. The enveloping housing is filled with air having a low moisture content and the interior space thereof is sealed with respect to the exterior space around the enveloping housing in such a way that the air present in the housing is not contaminated and will not reach the dew point.

The invention discloses a sealed compact-type combined electrical apparatus, comprising a sealed breaker unit, a disconnector unit, a current transformer unit, an earthed switch unit and an operation mechanism. The breaker unit, the disconnector unit, the current transformer unit, the earthed switch unit and the operation mechanism are assembled on the same framework; the primary conductive part of the breaker unit is combined with the primary conductive movable end of the disconnector unit in a sealed insulation manner; the primary conductive static end of the disconnector unit is separately mounted on the framework; the movable end and static end of the disconnector unit form insulation intervals; one end of the current transformer unit is mounted on a sealed pole of the breaker unit and the other end of the current transformer unit is integrally combined with an earthed static contact. The sealed compact-type combined electrical apparatus has the advantages of clear and compact structure, reasonable operation, small mounting volume, favorable safety performance, high reliability and long repair period. Besides, the electrical performance of each unit can be coordinated and matched favorably within a limited framework space.

A vacuum insulated switchgear having a vacuum container, a fixed contact disposed in the vacuum container, a movable contact disposed in the vacuum container capable of being in contact with or out of contact with the fixed contact, a driving mechanism for driving the movable contact in directions to contact with and out of contact with the fixed contact, a resin portion molded around the vacuum container, an insulative bushing for covering a pulled-out portion of a conductor connected to the fixed contact and for extending from the molded resin portion, and a cable head insulating member for covering a conductor of a cable head connected to the conductor at the pulled-out portion and an outer surface of the cable head insulating member being earthed, characterized in that:

• • an earthed conductive member is embedded at least at a position opposite to an end of the cable head insulating member in the bushing.

The invention relates to a three-station solid insulating fully-sealed switch grounding mechanism, belonging to grounding devices of electric switches. The three-station solid insulating fully-sealed switch grounding mechanism comprises three grounding post devices, each grounding post device comprises an insulation body, the insulation body is provided with an open slot containing insulating oil, a contact is fixedly sealed at the bottom of the insulation body, a connecting slot is arranged at the upper end of the contact, the insulation body is connected with a flange assembly body, and a grounding rod is inserted in the flange assembly body. The upper ends of the three grounding rods pass through a grounding linked bracket and then are screwed with a ground soft copper belt, the grounding linked bracket is provided with a slot hole, a crank connecting shaft is arranged in the slot hole in an insertion manner, the front end of the crank connecting shaft is vertically connected with one end of a spring crank, the other end of the spring crank is vertically connected with the back end of a grounding shaft, a spring crank front side plate is hinged with a first support through a pin shaft, the two ends of a grounding spring are fixed on the first support and a second support, and the second support is movably connected with a grounding spring support frame arranged on a mechanism support plate. The three-station solid insulating fully-sealed switch grounding mechanism disclosed by the invention has the advantages of simple and compact structure, small volume and capability of reducing the manufacturing cost of an ring main unit, and is simple in operation and safe in use.

A gas-insulated switchgear includes a grounded tank filled with insulation gas, a center conductor which is disposed in the grounded tank and to which a voltage is applied, an insulating support member which insulates and supports the center conductor, and a nonlinear resistive part disposed at least on a vertically lower side inner surface of the grounded tank and formed by an insulation material containing a nonlinear resistive material. If an electric field applied to the nonlinear resistive part is higher than an electric field value in a vicinity of a contact point between the nonlinear resistive part and a metallic foreign substance mixed in the grounded tank during an operation, a resistivity of the nonlinear resistive part at the center conductor side is lower than a resistivity at which a discharge delay time is equal to an electric field relaxation time constant.

The invention relates to a three-phase solid insulating shell. By splitting a solid insulating ring main unit into an insulating shell and a line inlet and outlet component, detachment of conducting elements including embedded copper bars and the like in an original solid insulating shell is realized and then inserted into the insulating shell through flange connection to realize ordered control of an electric field, and the problem of local discharge is avoided. A vacuum arc-extinguishing chamber is removed out of the insulating shell and can be mounted on the insulating shell through a connection flange, and independent pouring forming of the shell is realized. High industrial yield and technical simplicity are realized, and the problem of deformation in an insulating shell shaping process due to the internal vacuum arc-extinguishing chamber is avoided. By means of flange connection, requirements on same airtightness and electrical performances of an original integral shell are met,limitation of conventional technical thinking is broken through, and problems of low size and structural precision, difficulty in processing and forming, proneness to local discharge and difficulty incontrol of the electric field in an existing solid insulating shell are solved.

The invention discloses high voltage solid insulation looped network switch equipment. The equipment comprises a base, a bus chamber, a breaker chamber and a cabinet body, wherein the cabinet body ismounted at the top of the base; an upper door body is mounted at the top of one side of the cabinet body; a name plate is arranged on the upper door body; a lower door body is mounted at the bottom ofone side of the cabinet body; a control panel is mounted at the top of one side of the lower door body; a dummy bus is mounted at the center of one side of the lower door body; a current detector ismounted at the top of one side of the cabinet body; a current transformer is mounted at one end inside the breaker chamber below a supporting insulator; a cable is mounted at the center of the bottomof the interior of the breaker chamber. As a epoxy resin insulating shaft is provided to serve as an insulating medium, and rubber gaskets are arranged in positions where the upper door body and the lower door body are connected with the cabinet body, the equipment cannot produce hazardous substance, and is small in environmental pollution, and beneficial to environmental protection.

The invention discloses a condensation preventing device for solid insulated switchgear. The switchgear comprises a cable chamber and a horizontal busbar chamber, wherein each of the cable chamber and the horizontal busbar chamber is provided with a vertical sealing plate and a door; the surface of each of the sealing plates is provided with a plastic spraying layer, and the surface of each of the doors is provided with a plastic spraying layer; the plastic spraying layer on the inner side of the inner side surface of each of the sealing plates and the doors is coated with a resin type MYQS-1 hydrophilic material coating. The invention also discloses a manufacturing method of the condensation preventing device. Due to the adoption of the technical scheme, the condensation resistance level of the self surface of the solid insulated switchgear is improved; on the one hand, condensate is initiatively generated on the inner side of a shell consisting of the functional chambers and forms water drops which then flow into a guide channel and is discharged out of the switchgear, and thus the air humidity in the switchgear is reduced, and a live part cannot reach the saturation humidity under which the condensate generates; on the other hand, a micron-nanoscale coarse structure and a hydrophobic material surface with low surface energy are established on the surface of the solid insulated switchgear, so that the concentrate is not easy to generate on the surface of the solid insulated switchgear; therefore, the purpose of ensuring the safety operation of electrical equipment is achieved.

A submersible electrical enclosure is for a switchgear assembly. The switchgear assembly includes a number of electrical switching apparatus. The submersible electrical enclosure includes: a plurality of sides defining an interior, the interior receiving each of the electrical switching apparatus, each side including: a conductive polymeric layer facing away from the interior, and an insulative polymeric layer molded to the conductive polymeric layer. The insulative polymeric layer faces the interior and substantially overlays the conductive polymeric layer.