CN105811348A - Remote controllable low-voltage cable branch box - Google Patents
Remote controllable low-voltage cable branch box Download PDFInfo
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- CN105811348A CN105811348A CN201510885859.XA CN201510885859A CN105811348A CN 105811348 A CN105811348 A CN 105811348A CN 201510885859 A CN201510885859 A CN 201510885859A CN 105811348 A CN105811348 A CN 105811348A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/08—Distribution boxes; Connection or junction boxes
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/08—Distribution boxes; Connection or junction boxes
- H02G3/16—Distribution boxes; Connection or junction boxes structurally associated with support for line-connecting terminals within the box
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/08—Distribution boxes; Connection or junction boxes
- H02G3/18—Distribution boxes; Connection or junction boxes providing line outlets
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Installation Of Indoor Wiring (AREA)
- Cable Accessories (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The invention discloses a remote controllable low-voltage cable branch box. The remote controllable low-voltage cable branch box comprises at least one wire inlet unit, multiple wire outlet units and one connecting unit. The wire inlet unit comprises a three-phase live wire inlet element, a zero wire inlet element, a ground wire inlet element and a wire inlet frame, wherein each wire inlet element is separately arranged on the wire inlet frame to form an integral body. Each wire outlet unit comprises a three-phase live wire outlet element, a zero wire outlet element, a ground wire outlet element and a wire outlet frame, wherein each wire outlet element is separately arranged on the wire outlet frame to form an integral body. The elements in the wire inlet unit and the wire outlet units are independently in electrical connection with the connecting unit. Compared to the prior art, the low-voltage cable branch box employs a three-phase five-wire design, can be connected with three-phase four wires or three-phase five wires and employs a three-phase live wire, zero wire and ground wire modular design. At the same time, a zero wire connecting piece is arranged in a space generated by stepped arrangement of three-phase live wires, the space is fully utilized, the land occupation area is reduced, a three-phase five-wire standard design is adopted, and the low-voltage cable branch box is suitable for large-scale production. Therefore, the application prospect is quite wide.
Description
This case is the patent No.: 201410148288.7, the applying date: on April 14th, 2014, patent name is the divisional application of a kind of low-voltage cable junction box.
Technical field
The present invention relates to a kind of low-voltage distribution system device, specifically, relate to remote-controllable type low-voltage cable junction box, belong to cable branch technical field.
Background technology
Low-voltage distribution system refers to the voltage distribution system less than 1kV, is made up of distribution substation (usually the transmission voltage of electrical network being reduced to distribution voltage), high-tension distributing line, distribution transformer, low-voltage distributing line and the corresponding protection equipment that controls.Wherein the distribution system of 0.4kV is widely used in the power system of three-phase alternating current 380/220V, the 55Hz such as Urban Residential District, industrial and mining establishment, job site, is particularly well-suited in the three-phase of the multiple communal facilitys such as avenue, universities and colleges, residential block or single-phase power transmission and distribution or single-phase lighting system as accepting or the use of distribution electric energy.
In low-voltage network, transmission line of electricity is generally adopted three-phase four-wire system, and wherein three-phase refers to A, B, C three-phase, and four circuits in four lines represent A, B, C three-phase firewire and zero line N respectively.The effect of zero line N is: when threephase load is asymmetric, the current potential of guarantee zero line is zero, to eliminate neutral point potential change, makes the phase voltage of each phase load equal to power supply phase voltage, and unrelated with load variations；If there being a phase open circuit in three-phase, only affecting this phase, all the other two phase voltages still remain unchanged, be connected on this biphase on electric equipment remain to normal operation.Therefore, the zero line in three-phase four-wire system, once open circuit for some reason, in the asymmetric situation of threephase load, can produce neutrality locus transfer, cause imbalance of three-phase voltage, and some phase voltages are too high, it is possible to cause that electric equipment burns；Pressing through mutually of having is low, and electric equipment cannot normally use.For higher safety, also increasingly advocating now three-phase five-wire mode, three-phase five-wire mode is many a ground wire PE, neutral conductor N and ground wire E multiple grounding, duplicate protections compared with three-phase four-wire system.
The disaster hidden-trouble that the electric leakage in low-voltage distribution that what low-voltage distribution system higher pressure distribution system more needed to arouse attention is brings, after being mainly electric wiring or apparatus insulated damage, under certain circumstances, close material (threading metal tube, electric device metal shell, live wood etc.) can be leaked electricity, make topical substance charged, serious even fatal electric shock is caused, thus producing spark, electric arc, overheated high temperature etc. and causing fire to people.When there is electric leakage and run into carapace short when electrical equipment; electric current will make device housings, zero line protection line (protective grounding line), zero line (greatly) form closed-loop path; usual leakage current will be very big, and fuse action can be made to cut off the electricity supply to realize protection.But due to many reasons existence (as fuse specification be likely to artificially to strengthen several times or replaced by copper wire, grounding device is undesirable causes that earth resistance is relatively big, ground connection terminal connects loosely, protection device is malfunctioning or arrange unreasonable etc.) overcurrent protective device can be made not have overcurrent protection；So electric leakage is once occur, and by sustainable existence, and then causes getting an electric shock or electrical fire accident, and many leakage fire cases also demonstrate this point.
The factor causing electric leakage is a lot; be summed up mainly have following several: mostly the installation of (1) low-voltage distribution system is non-electric specialty personnel; quality is uneven; difficult quality guarantee; show: moist or have in the environment of acid, caustic corrosion; electric wire surface, equipment is protected and is directly installed；During wiring, cutter, pincers, hammer equivalent damage insulating barrier；Terminal quality of connection and insulating bag roll the non-standard phenomena that quality is undesirable etc.；(2) electric wiring or equipment failure to inspect, because of overload or the reason insulation degradation such as service life is longer；(3) personation, electric product of poor quality are selected；(4) extraneous factor: moisture immersion, extruding, damaged by rats etc..Electric leakage causes the reason of fire mainly to have: (1) leakage current directly causes fire; leak current fault point contacts under normal circumstances can be unreal, seemingly connects non-connecing, causes that contact resistance is bigger; make overcurrent protective device be difficult to action, electric arc can be produced in fault point simultaneously.According to survey, only the arc temperature of the electric current of 0.5A can more than more than 2000 DEG C, it is sufficient to ignite all combustibles.(2) the binding post place of protection zero line or protection ground wire connects unreal, causes fire.Phase line is connected unreal with zero line binding post, and equipment work is abnormal, it is possible to discovery in time processes, and the binding post of protection zero line or ground wire connects unreal, and resistance is excessive, and equipment is work as usual, and trouble point is then not easily found.Once electric leakage, owing to trouble point joint is too loose or corrosion etc., high resistant occurs, cause hot-spot, connect terminal place and produce high temperature or electric arc, it is possible to ignite combustible around, or burning out receptacle, switch etc., ignite wooden base, this electric leakage being relatively conventional form on fire.In July, 2000, namely Hangzhou restaurant distribution board fire is 1 example, and before catching fire, restaurant closes, and load is at a low ebb.When fire occurs, electric consumption on lighting is still normal.Through looking into total serious carbonization of air switch in distribution box, protection zero line binding post has metal concave to melt trace, is consistent with drain conditions.(3) fire that electrical leakage voltage causes; after electric leakage persistently occurs; owing to electric current can not scatter; and lead another earthing, loop looking for resistance little; the metal shell of all electric devices being attached thereto can be made with voltage-to-ground along zero line protection line (earth lead) conduction; at this moment it is possible to become fire origin to hardware arcings such as the contiguous dim pipe of water of electronegative potential, gas pipes, only the maintenance voltage of 20V just can make electric arc recur, and can ignite combustible equally around.If to gas pipe arcing, it is possible to puncture tube wall, cause gas leak to cause fire.It should be noted that due to the conduction of voltage, leakage point of electricity is not necessarily consistent with point of origin.(4) if the wire diameter of protection zero line or protection ground wire selects too small, when passing through bigger leakage current, circuit temperature rise is very fast, equally also fire hazard.
Being not difficult to find out from above, the various kinds of equipment of low-voltage distribution system is for security requirement and is not less than high-tension distribution equipment, and What is more, and low-voltage distribution apparatus requires higher safety and ease-to-operate on the contrary.
It is low-voltage cable junction box as in low-voltage distribution system requisite controller switching equipment.Cable branch box is capacity little individual load distribution a kind of controller switching equipment of developing when relatively concentrating, and it is along with the development of power distribution network cable process.The low-voltage cable junction box of most getting up early is to adopt casing coupling to connect cable on line copper bar and its to use, and carries out the connection of cable multi-branch, but every road can not be directly operated by this type of feeder pillar, be only used as cable branch use；When branch line load circuit breaks down, then needing to close upper level contactor, thus all branch line circuit are both needed to have a power failure in whole feeder pillar, power-off time is long, is unfavorable for the requirement now to power system restoration；Additionally, the live part of this type of feeder pillar is exposure, also bring certain hidden danger to safety when overhauling.
For the various problems of above-mentioned original branch case, to feeder pillar in prior art, especially low-voltage cable junction box has carried out multiple improvement.
The disclosed a kind of cable branch box of Chinese patent application CN201310425891, feeder pillar body structure has been carried out structure improvement, utilize the feeder pillar combination of the cover plate in trimming and monoblock aluminium sheet composition, replace conventional cuboid feeder pillar, save the material that trimming is saved, reduce commissure and welding, but in this cable branch box, the arrangement problem of circuit structure can not solve；The disclosed a kind of cable branch box of Chinese patent application CN201210321923, it includes cable vault, bus-bar room, explosion-proof antitheft casing, rain cover, potential indicator, fault detector and microcomputer controller, simple in construction, security reliability is high, it is easy to quick looking up the fault, but the problem that above-mentioned setting can not solve circuit structure itself；A kind of all-sealed low-voltage cable junction box disclosed in Chinese patent application CN201310451536; its box sealing; busbar outside adopts insulant to make; busbar skeleton is provided with the socket being connected with cable; employing double containment is protected, it is prevented that circuit meets water short circuit, but adopts insulant in this kind of low-voltage cable junction box around busbar; affect electric conductivity and maintenance inconvenience；Low-voltage cable junction box disclosed in Chinese patent CN201320069330, it includes base plate, base plate is provided with three-phase bus bar, closes the insulating boot of busbar, each insulating boot is provided with spliced eye, when installing output module, do not need more installation tool, simple and convenient, but in this low-voltage cable junction box, the safety problem of zero line can not solve；Low-voltage cable junction box outlet row array structure disclosed in Chinese patent CN201220586472, triple line and zero line outlet entirety of confluxing presents level course column structure, do not have cable juxtaposition phenomenon, but this triple line is connected with feeder pillar by bolt with zero line, connected mode is complicated, is not easy to quick installation and maintenance；The disclosed a kind of low-voltage cable junction box of Chinese patent CN200920180719 utility model; the three-phase line of this low-voltage cable junction box all adopts band fuse type killer switch; line is protected; power cable and case change, low-tension switch cabinet etc. are coupled together; very big convenience is provided for cable system; but once an outgoing line unit breaks down in this kind of low-voltage cable junction box; whole wire inlet unit fault will be caused; so thus outgoing line unit all by power-off; power-off area is wide, and maintenance difficult increases.
In the multiple improvement to sum up low-voltage cable junction box carried out, present low-voltage cable junction box product is all not related to the improvement of the feeder pillar internal circuit of cable, and the key problem of unresolved this type of product: now low-voltage cable junction box product is typically all three-phase four-wire system, ground wire is not had to arrange, and triple line and zero line do not combine, but adopt and be provided separately, triple line is arranged in the bus-bar system in low-voltage cable junction box, neutral conductor N (zero line) relies on casing to arrange, whole low-voltage cable junction box needs bus-bar system to coordinate casing to use, zero line is exposed outside, when imbalance of three-phase voltage or neutral point potential change, zero line is possible to charged, especially zero line is still the mode adopting copper bar to add manual wiring, people is once imprudence touches exposed zero line on casing and can produce Danger Electric shock risk.Further, in the separating brake of present low-voltage cable junction box or making process, all cannot be ensured of according to first earthing line, zero line then three-phase firewire by this body structure of equipment；Otherwise, it is three-phase firewire, the zero line then ground wire that first breaks during open circuit, it is necessary to judge charged situation by Professional knowledge, it is impossible to the maximum protection to people and equipment；In addition the non-respective independence of each outlet unit, when an outlet unit breaks down, affects the normal operation of other outlet units, makes power-off area increase, and increases the difficulty of maintenance overhaul.Therefore, a kind of high safety performance and the low-voltage cable junction box of maintenance simplicity are needed badly.
In addition, the monitor in real time how realizing the performance of switch cubicle is also the technical research direction of this area, prior art is typically employed in outside switch cubicle and the alarm monitor in real time hands section as switch cubicle is set, its shortcoming is in that to be only capable of realizing in-plant warning by acoustooptic, and cannot directly by monitoring information transmission to maintainer, therefore, adopt the real-time monitoring terminal in other field can improve this problem, this real-time monitoring terminal includes the induction module of data cube computation, transport module, microprocessor and alarm module, wherein, induction module is used for the air pressure and the temperature data that gather in switch cubicle；Transport module connects induction module, for the data of transmission and air pressure and temperature；Microprocessor connects transport module, is used for processing the air pressure of transport module transmission and temperature data and alarm module being made whether the decision-making reported to the police；Alarm module connects microprocessor, for sending alarm signal after receiving the warning decision-making done by microprocessor.
Summary of the invention
For the problems referred to above that prior art exists, it is an object of the invention to provide a kind of low-voltage cable junction box, this low-voltage cable junction box adopts three-phase five-wire mode, three-phase firewire, zero line and ground wire are installed integral, this integral structure can make feeder pillar interior circuit construction produce partly as standard component, mate existing various casing or simple refit can use, existing product specification can be greatly improved and trouble waters that installation requirement differs so that this kind equipment suitability is more preferably.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of low-voltage cable junction box, including: at least one wire inlet unit, multiple outgoing line unit and connect unit, wire inlet unit includes three-phase firewire inlet wire element, zero line inlet wire element, ground wire inlet wire element and leading-in bracket, wherein to be divided on leading-in bracket integral for each inlet wire element, outgoing line unit includes that three-phase firewire goes out kind of thread elements, zero line goes out kind of thread elements, ground wire goes out kind of thread elements and wire-outlet rack, and wherein respectively going out kind of thread elements, to be divided on wire-outlet rack integral；Each element in wire inlet unit and outgoing line unit separately be connected unit electrical connection.
Preferably, wire inlet unit and outgoing line unit be connected unit connect integral.
Preferably, wire inlet unit and outgoing line unit be arranged in parallel；Wire inlet unit, outgoing line unit all be connected unit and be vertically arranged；Now, wire inlet unit, outgoing line unit become a network structure, wire inlet unit and outgoing line unit connecting integration-in-one structure on unit with being connected unit.
As one preferably embodiment, outgoing line unit can increase according to actual needs, it is preferred to 3～5 groups of outgoing line units, and now this low-voltage cable junction box is go out into three or enter five up to one.
As one preferably embodiment, wire inlet unit can increase according to actual needs, it is preferably 2 groups of wire inlet units, the wire inlet unit increased now by each low-voltage cable junction box is connected with the wire inlet unit of another low-voltage cable junction box inlet wire, one can be shared enter line cable thus multiple low-voltage cable junction box can be realized so that winding displacement is more succinct.
Preferably, three-phase firewire inlet wire element, zero line inlet wire element and ground wire inlet wire element is stepped successively is distributed on leading-in bracket.
Preferably, zero line goes out kind of thread elements and ground wire goes out kind of thread elements and is arranged at the same end of wire-outlet rack, it is preferred to be disposed side by side on the same end of wire-outlet rack.
Preferably, connecting unit and include three-phase connecting element, zero line connecting element, ground wire connecting element and installing plate, three-phase connecting element, zero line connecting element and ground wire connecting element are installed on a mounting board.
More preferably, three-phase connecting element, zero line connecting element and ground wire connecting element are installed in parallel on installing plate successively, wherein three-phase firewire inlet wire element and go out kind of thread elements and by the series connection of three-phase connecting element, zero line inlet wire element and go out kind of thread elements and by the series connection of zero line connecting element and ground wire inlet wire element and go out kind of thread elements and connected by ground wire connecting element.
More preferably, above-mentioned each inlet wire element, go out and be flexibly connected between kind of thread elements with connecting element, as one preferably embodiment, three-phase firewire inlet wire element is electrically connected by pluggable mode with between three-phase connecting element, zero line inlet wire element with and zero line connecting element electrically connected by pluggable mode, ground wire inlet wire element is electrically connected by overlapping mode with ground wire connecting element；Three-phase firewire is gone out and is electrically connected by pluggable mode between kind of thread elements with three-phase connecting element, zero line go out kind of thread elements with and zero line connecting element electrically connected by pluggable mode, ground wire is gone out kind of thread elements and is electrically connected by overlapping mode with ground wire connecting element.
Another object of the present invention is in that to provide a kind of low-voltage cable junction box, in this low-voltage cable junction box, wire inlet unit, outgoing line unit and connection cellular construction are reasonable, utilize the device space to greatest extent, reduce the floor space of whole equipment, connection unit, on the basis of arbitrary said structure, is arranged at the lower section of outgoing line unit and wire inlet unit by this low-voltage cable junction box.
It is highly preferred that outgoing line unit and in column the riding upon on connection unit of wire inlet unit.As one preferably embodiment, multiple outgoing line units set up the homonymy with wire inlet unit separately.
It is highly preferred that three-phase connecting element is in the lower section of three-phase firewire inlet wire element.
Preferably, zero line connecting element and three-phase connecting element are not at same plane.
Another object of the present invention is in that to provide a kind of low-voltage cable junction box, in order to coordinate the installation site of each element in wire inlet unit and outgoing line unit, further with space in case, reduce equipment volume, the installing plate cross section of connection unit, further on the basis of arbitrary said structure, is stairstepping by this low-voltage cable junction box.
It is highly preferred that installing plate is formed in one, adopt bending forming；As a kind of preferred implementation, installing plate adopts and is spliced.
Preferably, three-phase connecting element arranges one end on a mounting board, and it is highly consistent that each element that is connected arranges on a mounting board.
It is highly preferred that zero line connecting element and ground wire connecting element are arranged on the other end of installing plate.
Preferably, in order to Appropriate application three-phase firewire go out kind of thread elements, zero line go out kind of thread elements staged distribution produce space, reduce floor space, zero line connecting element is in three-phase firewire and goes out the lower section of kind of thread elements, and ground wire connecting element is connected with installing plate end.
It is highly preferred that the side end on installing plate is bent to form a non-horizontal surface, the non-horizontal surface that ground wire connecting element is bent to form with this installing plate end is connected.
It is highly preferred that the cross section of ground wire connecting element is L-shaped, the non-horizontal surface that the one side of ground wire connecting element is bent to form with this installing plate end is connected.
It is highly preferred that this installing plate end is bent to form a vertical, the vertical that the one side of ground wire connecting element is bent to form with this installing plate end is connected.
It is highly preferred that the connected mode of ground wire connecting element and this installing plate end is for being spirally connected.
It is highly preferred that three-phase connecting element, zero line connecting element, ground wire connecting element are copper bar.
Another object of the present invention is in that to provide a kind of low-voltage cable junction box, and this low-voltage cable junction box, in separating brake or making process, is ensured according to first earthing line, zero line then three-phase firewire by this body structure of equipment；Otherwise, it is three-phase firewire, the zero line then ground wire that first breaks during open circuit, reduces the probability of electric leakage as far as possible, realize the maximum protection to people and equipment with this.
In order to reduce the probability of touch, this low-voltage cable junction box is on the basis of any of the above-described structure, leading-in bracket is designed as and includes inlet wire lid and inlet wire base by inventor, inlet wire lid and inlet wire base engagement, inlet wire lid is a whole installation, and three-phase firewire inlet wire element, zero line inlet wire element and ground wire inlet wire element are stepped successively to be distributed on inlet wire base and closed by inlet wire lid.
More preferably, the end that inlet wire lid and inlet wire base are flexibly connected is positioned close to one end of three-phase firewire inlet wire element, inlet wire lid is flexibly connected by pin-and-hole with inlet wire base, so installing or in maintenance process, when inlet wire lid is gradually opened, ground wire inlet wire element, zero line inlet wire element and three-phase firewire inlet wire element represent successively.
More preferably, leading-in bracket farther includes an inlet wire lid locking bolt and an inlet wire base locking bolt, inlet wire lid locking bolt and inlet wire base locking bolt are separately positioned in inlet wire lid and inlet wire base near the one end of ground wire inlet wire element, it is prevented that arbitrarily open the inlet wire lid on leading-in bracket.
It is highly preferred that farther include a leading-in bracket guide pile on leading-in bracket, leading-in bracket guide pile is arranged on the one end of the close three-phase inlet wire element of inlet wire base, when inlet wire lid is opened, inlet wire lid is positioned by leading-in bracket guide pile, it is prevented that inlet wire lid rotates, and affects wiring or maintenance process.
It is highly preferred that the inlet wire lid of leading-in bracket and inlet wire base adopt insulant to make, it thus is avoided that the danger that leading-in bracket is charged.
Preferably, three-phase firewire inlet wire element is divided into first-phase live wire inlet wire element, second-phase live wire inlet wire element and third phase live wire inlet wire element, each phase firewire inlet wire element farther includes each phase firewire lead-in line joint and each phase firewire inlet wire connector, and each phase firewire lead-in line joint connects with corresponding each phase firewire inlet wire connector.
Connect it is highly preferred that zero line inlet wire element farther includes zero line lead-in line joint and zero line inlet wire connector, zero line lead-in line joint and zero line inlet wire connector.
Connect it is highly preferred that ground wire inlet wire element farther includes ground wire lead-in line joint and ground wire inlet wire connector, ground wire lead-in line joint and ground wire inlet wire connector.
More preferably, first-phase live wire lead-in line joint, second-phase live wire lead-in line joint, third phase live wire lead-in line joint, zero line lead-in line joint and ground wire lead-in line joint are stepped successively to be distributed on inlet wire base, each phase firewire inlet wire connector in three-phase firewire inlet wire element is electrically connected by pluggable mode with between three-phase connecting element, zero line inlet wire connector is electrically connected by pluggable mode with zero line connecting element, and ground wire inlet wire connector is electrically connected by overlapping mode with ground wire connecting element.
It is highly preferred that first-phase live wire lead-in line joint, second-phase live wire lead-in line joint, third phase live wire lead-in line joint, zero line lead-in line joint and ground wire lead-in line joint are in the position of inlet wire base successively from high to low.
Preferably, same in order to reduce the probability of touch, wire-outlet rack is designed as and includes an outlet lid and an outlet base by inventor, outlet lid and outlet base engagement, outlet lid is a whole installation, three-phase firewire goes out kind of thread elements, zero line goes out kind of thread elements and ground wire goes out kind of thread elements and is arranged on outlet base, and zero line goes out kind of thread elements and ground wire goes out kind of thread elements and is disposed side by side on the same end of outlet base.
More preferably, the end that is flexibly connected of outlet lid and outlet base is positioned close to ground wire and goes out the one end of kind of thread elements, outlet lid is flexibly connected by pin-and-hole with outlet base, so installing or in maintenance process, when outlet lid is gradually opened, three-phase firewire goes out kind of thread elements, zero line goes out kind of thread elements and ground wire goes out kind of thread elements and represents successively, and therefore low-voltage cable junction box is in separating brake or making process, is ensured according to first earthing line, zero line then three-phase firewire with being flexibly connected of outlet base by outlet lid；Otherwise, it is three-phase firewire, the zero line then ground wire that first breaks during open circuit, thus ensureing the maximum protection to human body and equipment.
It is highly preferred that the outlet lid of wire-outlet rack and outlet base adopt insulant to make, it is to avoid the danger that wire-outlet rack is charged.
Preferably, three-phase firewire goes out that kind of thread elements is divided into first-phase live wire to go out kind of thread elements, second-phase live wire goes out kind of thread elements and third phase live wire goes out kind of thread elements, each phase firewire goes out kind of thread elements and farther includes each phase firewire outlet joint and each phase firewire goes out wire connections, and each phase firewire outlet joint goes out wire connections and connects with corresponding live wire.
It is highly preferred that zero line goes out kind of thread elements farther includes zero line outlet joint and zero line goes out wire connections, zero line outlet joint and zero line go out wire connections and connect.
It is highly preferred that ground wire goes out kind of thread elements farther includes ground wire outlet joint and ground wire goes out wire connections, ground wire outlet joint and ground wire go out wire connections and connect.
More preferably, first-phase live wire outlet joint, second-phase live wire outlet joint and third phase live wire outlet joint are stepped successively to be distributed on outlet base, zero line outlet joint and ground wire outlet joint are disposed side by side on outlet base one end, three-phase firewire is gone out each phase firewire in kind of thread elements and goes out and electrically connected by pluggable mode between wire connections with three-phase connecting element, zero line is gone out wire connections and is electrically connected by pluggable mode with zero line connecting element, and ground wire is gone out wire connections and electrically connected by overlapping mode with ground wire connecting element.
It is highly preferred that first-phase live wire outlet joint, second-phase live wire outlet joint, third phase live wire outlet joint are distributed from high to low successively on outlet base.
It is highly preferred that zero line outlet joint and ground wire outlet joint position height on wire-outlet rack are lower than third phase live wire outlet joint position height on wire-outlet rack.
Preferably, each joint and the non-one_to_one corresponding in position of each joint in outgoing line unit in wire inlet unit.
It is highly preferred that each joint staggers with the position of each joint in outgoing line unit in wire inlet unit.
More selection of land, the orthographic projection of three-phase firewire lead-in line joint is corresponding to one end of installing plate, and the orthographic projection of zero line lead-in line joint, ground wire lead-in line joint, three-phase firewire outlet joint, zero line outlet joint and ground wire outlet joint is at the other end of installing plate.
Another object of the present invention is in that to provide a kind of low-voltage cable junction box, in order to improve safety further in this low-voltage cable junction box, ensureing that circuit safety runs, each outgoing line unit farther includes three fuses, and each fuse is arranged inside the outlet lid of wire-outlet rack.
Preferably, the corresponding each phase going out kind of thread elements with three-phase firewire of each fuse goes out kind of thread elements and is flexibly connected, and fuse contact knife position is removed material from wire-outlet rack and formed arc-chutes；When outlet lid and outlet base Guan Bi, the corresponding each phase going out kind of thread elements with three-phase firewire of each fuse goes out kind of thread elements and is connected, and whole circuit is channel status；When opening outlet lid, when outlet lid and outlet base depart from or when circuit occurs abnormal, each fuse correspondence and three-phase firewire go out each phase of kind of thread elements and go out kind of thread elements disconnection, and whole circuit is off-state.
Go out each phase in kind of thread elements with three-phase firewire and go out the wire connections that outes of kind of thread elements it is highly preferred that the two ends of each fuse are corresponding and be flexibly connected.
It is highly preferred that a corresponding observation window on each fuse, observation window is arranged between fuse and outlet lid, is observed the working condition of corresponding fuse by observation window.
Preferably, each phase goes out the wire connections that outes of kind of thread elements and farther includes an outlet connection assist and outlet conversion connector, each phase outlet connection assist connects with corresponding each phase outlet joint, and each phase outlet conversion connector is connected by pluggable mode with corresponding three-phase connecting element.
As a kind of preferred embodiment, the two ends of each fuse are corresponding, and and each phase goes out to go out in kind of thread elements the outlet conversion connector of wire connections and outlet connection assist is flexibly connected.
Preferably, in order to prevent electric shock accidents, protect personal safety, connect unit and farther include at least four insulating protective cover, each in three-phase connecting element be connected element and zero line connecting element is respectively in the insulating protective cover of correspondence.
It is highly preferred that insulating protective cover is lattice-shaped envelope structure, each insulating protective cover is arranged on a mounting board, each in three-phase connecting element is connected element and zero line connecting element is separately positioned on inside the insulating protective cover of correspondence.
Preferably, low-voltage cable junction box farther includes a housing, and wire inlet unit, outgoing line unit and connection unit are removably mounted in housing.
Preferably, wire inlet unit in low-voltage cable junction box, outgoing line unit and connection unit integral are formed, and rely on the wire inlet unit connected on unit and outgoing line unit can realize the purpose of voltage cables feeder pillar low pressure shunting.
Compared with prior art, a kind of low-voltage cable junction box provided by the invention, except adopting Three-phase five-wire design, three-phase and four-line or Three-phase five-wire can be connect, the suitability improves, ground wire grounded, the advantage that security performance improves, and is also equipped with advantages below:
1, each three-phase firewire in this low-voltage cable junction box, zero line and ground wire are installed integral, wire inlet unit and outgoing line unit be arranged on connection unit on integralization structure can make feeder pillar interior circuit construction partly as standard component produce, mate existing various casing or simple refit can use, existing product specification can be greatly improved and trouble waters that installation requirement differs so that this kind equipment suitability is more preferably；
2, wire inlet unit, outgoing line unit and connection cellular construction are reasonable, connect unit and be arranged at the lower section of outgoing line unit and wire inlet unit, the installing plate cross section being simultaneously connected with unit is the step arrangement that stairstepping adapts to wire inlet unit and outgoing line unit, reduces the volume of whole equipment；
3, connecting in the space that unit is arranged on staged arrangement, particularly the zero line connector of zero line is arranged in the space that three-phase firewire goes out the arrangement generation of kind of thread elements staged, utilizes space in equipment to a greater extent thus reducing small product size；
4, in separating brake or making process, ensured according to first earthing line, zero line then three-phase firewire by this body structure of equipment；Otherwise, it is three-phase firewire, the zero line then ground wire that first breaks during open circuit, improves the safely controllable property of equipment further, it is to avoid the dangerous generation of maloperation, realize the maximum protection to people and equipment with this；
5, the three-phase firewire in wire inlet unit and outgoing line unit, zero line and ground wire arrangement overall appearance, facilitate the line inspection or replacing；
6, this outgoing line unit is each independent, is independent of each other, when an outgoing line unit breaks down, does not affect the normal operation of other outgoing line units；
7, in each outgoing line unit, it is provided with multiple fuse, it is ensured that circuit safety runs, improves circuit safety performance further；
8, multiple low-voltage cable junction boxes can pass through to increase the shared inlet wire cable of a wire inlet unit so that configuration is more distinct succinctly.
In sum, low-voltage cable junction box provided by the invention, security performance improves; under not affecting the premise that low-voltage cable junction box normally uses; reducing low-voltage cable junction box floor space, at utmost protection equipment and personal safety, therefore its application prospect is very wide.
Accompanying drawing explanation
Fig. 1 is the installation diagram of a kind of preferred implementation of low-voltage cable junction box provided by the invention；
Fig. 2 is the axonometric chart of a kind of preferred implementation of low-voltage cable junction box provided by the invention；
Fig. 3 is a kind of preferred implementation axonometric chart of wire inlet unit in low-voltage cable junction box provided by the invention；
Fig. 4 is a kind of preferred implementation explosive view of wire inlet unit in low-voltage cable junction box provided by the invention；
Fig. 5 is a kind of preferred implementation axonometric chart of outgoing line unit in low-voltage cable junction box provided by the invention；
Fig. 6 is a kind of preferred implementation explosive view of outgoing line unit in low-voltage cable junction box provided by the invention；
Fig. 7 is a kind of preferred implementation axonometric chart connecting unit in low-voltage cable junction box provided by the invention；
Fig. 8 is a kind of preferred implementation explosive view connecting unit in low-voltage cable junction box provided by the invention；
Fig. 9 be in low-voltage cable junction box provided by the invention in wire inlet unit and outgoing line unit each joint at the distribution schematic diagram connected on unit；
Figure 10 is the another kind of preferred implementation schematic diagram of low-voltage cable junction box provided by the invention；
Figure 11 is multiple low-voltage cable junction box connection diagram provided by the invention.
Detailed description of the invention
The present invention is made further in detail below in conjunction with embodiment and accompanying drawing, intactly illustrates.
Fig. 1 to Fig. 9, for a kind of preferred implementation of low-voltage cable junction box provided by the invention.As depicted in figs. 1 and 2, this low-voltage cable junction box adopts Three-phase five-wire design, it is suitable for the use of three-phase four-wire system and three-phase five-wire mode, it includes a wire inlet unit 10, multiple outgoing line unit 20 (only showing an outgoing line unit 20 in figure) and connects unit 30, wire inlet unit 10 and outgoing line unit 20 separately be connected unit 30 and electrically connect, between outgoing line unit 20 each independently, it is independent of each other.Wire inlet unit 10 and outgoing line unit 20 are connected the integral structure of unit 30, standardized designs, feeder pillar interior circuit construction can be made to produce partly as standard component, mate existing various casing or simple refit can use.
Cable branch box farther includes a housing 40, and wire inlet unit 10, outgoing line unit 20 and connection unit 30 are removably mounted in housing 40.
For utilizing the device space, connect unit 30 and be positioned at outgoing line unit 20 and the lower section of wire inlet unit 10.Outgoing line unit 20 and in column the riding upon on connection unit 30 of wire inlet unit 10.Wire inlet unit 10, outgoing line unit 20 all be connected unit 30 and be vertically arranged.Wire inlet unit 10 and outgoing line unit 20 be arranged in parallel, and as one preferably embodiment, multiple outgoing line units 20 set up separately and the homonymy of wire inlet unit 10.Outgoing line unit 20 can increase according to actual needs, it is preferred to 3～5 groups of outgoing line units, and now this low-voltage cable junction box is go out into three or enter five up to one.Now, wire inlet unit 10, outgoing line unit 20 and be connected unit 30 one-tenth one network structure.
Fig. 3 is a kind of preferred implementation axonometric chart of wire inlet unit in low-voltage cable junction box provided by the invention；Fig. 4 is a kind of preferred implementation explosive view of wire inlet unit in low-voltage cable junction box provided by the invention.As shown in Figure 3 to Figure 4, this wire inlet unit 10 includes three-phase firewire inlet wire element 11, zero line inlet wire element 12, ground wire inlet wire element 13 and leading-in bracket 14, and three-phase firewire inlet wire element 11, zero line inlet wire element 12 and ground wire inlet wire element 13 set up separately on leading-in bracket 14 integral.The three-phase firewire inlet wire element 11 of wire inlet unit 10, zero line inlet wire element 12 and ground wire inlet wire element 13 are flexibly connected with being connected unit 30.
The probability of each element in wire inlet unit 10 is arbitrarily touched in order to reduce, leading-in bracket 14 farther includes inlet wire lid 141 and an inlet wire base 142, inlet wire lid 141 coordinates with inlet wire base 142, inlet wire lid 141 is a whole installation, and three-phase firewire inlet wire element 11, zero line inlet wire element 12 and ground wire inlet wire element 13 are stepped successively to be distributed on inlet wire base 142 and closed by inlet wire lid 141.Inlet wire lid 141 and the inlet wire base 142 of leading-in bracket 14 adopt insulant to make, and thus are avoided that when whole low-voltage cable junction box channel status, and the danger that leading-in bracket 14 is charged not only protects equipment but also protect personal safety.
The end that inlet wire lid 141 and inlet wire base 142 are flexibly connected is positioned close to one end of three-phase firewire inlet wire element 11, the end that inlet wire lid 141 and inlet wire base 142 are flexibly connected is flexibly connected by pin-and-hole, so installing or in maintenance process, when inlet wire lid 141 is gradually opened, ground wire inlet wire element 13, zero line inlet wire element 12 and three-phase firewire inlet wire element 11 represent successively, improve installation or maintenance process safety.
Further, leading-in bracket 14 farther includes inlet wire lid locking bolt 1411 and an inlet wire base locking bolt 1421, inlet wire lid locking bolt 1411 and inlet wire base locking bolt 1421 are separately positioned in inlet wire lid 141 and inlet wire base 142 near the one end of ground wire inlet wire element 13, it is prevented that arbitrarily open the inlet wire lid 141 on leading-in bracket 14.
Further, leading-in bracket 14 farther includes a leading-in bracket guide pile 143, leading-in bracket guide pile 143 is arranged on the one end of the close three-phase inlet wire element 11 of inlet wire base 142, so when inlet wire lid 142 is opened, inlet wire lid 142 is positioned by leading-in bracket guide pile 143, prevent inlet wire lid 142 from rotating, affect wiring or maintenance process.
Three-phase firewire inlet wire element 11 is divided into first-phase live wire inlet wire element 111, second-phase live wire inlet wire element 112 and third phase live wire inlet wire element 113, each phase firewire inlet wire element (111,112,113) farther includes each phase firewire lead-in line joint (1111,1121,1131) and each phase firewire inlet wire connector (1112,1122,1132), and each phase firewire lead-in line joint (1111,1121,1131) connects with corresponding each phase firewire inlet wire connector (1112,1122,1132).Zero line inlet wire element 12 farther includes zero line lead-in line joint 121 and zero line inlet wire connector 122, zero line lead-in line joint 121 and zero line inlet wire connector 122 and connects.Ground wire inlet wire element 13 farther includes ground wire lead-in line joint 131 and ground wire inlet wire connector 132, ground wire lead-in line joint 131 and ground wire inlet wire connector 132 and connects.
First-phase live wire lead-in line joint 1111, second-phase live wire lead-in line joint 1121, third phase live wire lead-in line joint 1131, zero line lead-in line joint 121 and ground wire lead-in line joint 131 are stepped successively to be distributed on inlet wire base 142, each phase firewire inlet wire connector (1112,1122,1132) in three-phase firewire inlet wire element 11 be connected unit 30 and electrically connected by pluggable mode, zero line inlet wire connector 12 is electrically connected by pluggable mode with being connected unit 30, and ground wire inlet wire connector 13 is electrically connected by overlapping mode with being connected unit 30.
It should be noted that first-phase live wire lead-in line joint 1111, second-phase live wire lead-in line joint 1121, third phase live wire lead-in line joint 1131, zero line lead-in line joint 121 and ground wire lead-in line joint 131 in the position of inlet wire base 142 successively from high to low.
Fig. 5 is a kind of preferred implementation axonometric chart of outgoing line unit in low-voltage cable junction box provided by the invention；Fig. 6 is a kind of preferred implementation explosive view of outgoing line unit in low-voltage cable junction box provided by the invention.As shown in Figure 2, Figure 5 and Figure 6, this outgoing line unit 20 connects by being connected unit 30 with this wire inlet unit 10, this outgoing line unit 20 includes that three-phase firewire goes out kind of thread elements 21, zero line goes out kind of thread elements 22, ground wire goes out kind of thread elements 23 and wire-outlet rack 24, and three-phase firewire goes out kind of thread elements 21, zero line goes out kind of thread elements 22 and ground wire goes out kind of thread elements 23 and is divided on wire-outlet rack 24 integral.In outgoing line unit 20 each element separately be connected unit 30 and be flexibly connected.
Same in order to reduce the probability of each element in random touch outgoing line unit 20, wire-outlet rack 24 farther includes outlet lid 241 and an outlet base 242, outlet lid 241 coordinates with outlet base 242, outlet lid 241 is flexibly connected with outlet base 242, outlet lid 241 is a whole installation, three-phase firewire goes out kind of thread elements 21, zero line goes out kind of thread elements 22 and ground wire is gone out kind of thread elements 23 and is arranged on outlet base 242 to be closed by outlet lid 241, and zero line goes out kind of thread elements 22 and ground wire goes out kind of thread elements 23 and is disposed side by side on the same end of outlet base 242.Outlet lid 241 and the outlet base 242 of wire-outlet rack 24 adopt insulant to make, it is to avoid wire-outlet rack 24 charged danger due to the energising of whole low-voltage cable junction box.
It should be noted that, the end that is flexibly connected of outlet lid 241 and outlet base 242 is positioned close to ground wire and goes out the one end of kind of thread elements 23, outlet lid 241 is flexibly connected by pin-and-hole with the end that is flexibly connected of outlet base 242, so installing or in maintenance process, when outlet lid 241 is gradually opened, three-phase firewire goes out kind of thread elements 21, zero line goes out kind of thread elements 22 and ground wire goes out kind of thread elements 23 and represents successively；Therefore low-voltage cable junction box is in separating brake or making process, is ensured according to first earthing line, zero line then three-phase firewire with being flexibly connected of outlet base 242 by outlet lid 241；Otherwise, it is three-phase firewire, the zero line then ground wire that first breaks during open circuit, thus ensureing the maximum protection to human body and equipment.
Three-phase firewire goes out that kind of thread elements 21 is divided into first-phase live wire to go out kind of thread elements 211, second-phase live wire goes out kind of thread elements 212 and third phase live wire goes out kind of thread elements 213, each phase firewire goes out kind of thread elements (211,212,213) and farther includes each phase firewire outlet joint (2111,2121,2131) and each phase firewire goes out wire connections (2112,2122,2132), and each phase firewire outlet joint (2111,2121,2131) goes out wire connections (2112,2122,2132) and connects with corresponding live wire.Zero line goes out kind of thread elements 22 and farther includes zero line outlet joint 221 and zero line goes out wire connections 222, and zero line outlet joint 221 and zero line go out wire connections 222 and connect.Ground wire goes out kind of thread elements 23 and farther includes ground wire outlet joint 231 and ground wire goes out wire connections 232, and ground wire outlet joint 231 and ground wire go out wire connections 232 and connect.
First-phase live wire outlet joint 2111, second-phase live wire outlet joint 2121, third phase live wire outlet joint 2131 is stepped successively to be distributed on outlet base 242, zero line outlet connect 221 and ground wire outlet joint 231 be disposed side by side on the one end of outlet base 242, each phase firewire that three-phase firewire goes out in kind of thread elements 21 goes out wire connections (211, 212, 213) be connected unit 30 and electrically connected by pluggable mode, zero line is gone out wire connections 222 and is connected unit and 30 is electrically connected by pluggable mode, ground wire is gone out wire connections 232 and is connected unit and 30 is electrically connected by overlapping mode.Noticeable thing, first-phase live wire outlet joint 2111, second-phase live wire outlet joint 2121, third phase live wire outlet joint 2131 are distributed from high to low successively on outlet base 242, and the position height of zero line outlet joint 221 and ground wire outlet joint 231 is lower than the height of third phase live wire outlet joint 2131.
In order to prevent zero line outlet joint 221 and ground wire outlet joint 231 from connecting, cause being provided with an insulation board between zero line outlet joint 221 and ground wire outlet joint 231 by ground wire electrification.
Fig. 7 is a kind of preferred implementation axonometric chart connecting unit in low-voltage cable junction box provided by the invention；Fig. 8 is a kind of preferred implementation explosive view connecting unit in low-voltage cable junction box provided by the invention.As shown in Fig. 7 to Fig. 8, this connection unit 30 includes three-phase connecting element 31, zero line connecting element 32, ground wire connecting element 33 and installing plate 34, and three-phase connecting element 31, zero line connecting element 32 and ground wire connecting element 33 are installed in parallel on installing plate 34 successively.
Three-phase firewire inlet wire element 11 and go out kind of thread elements 21 connected by three-phase connecting element 31, zero line inlet wire element 12 and go out kind of thread elements 22 and connected by zero line connecting element 32 and ground wire inlet wire element 13 and go out kind of thread elements 23 and connected by ground wire connecting element 33.
Three-phase connecting element 31 is divided into first-phase connecting element 311, second-phase connecting element 312 and third phase connecting element 313.Three-phase firewire inlet wire element 11 and go out kind of thread elements 21 and be flexibly connected with the first-phase connecting element 311 of three-phase connecting element 31, second-phase connecting element 312 and third phase connecting element 313, zero line inlet wire element 12 and go out kind of thread elements 22 and be flexibly connected with zero line connecting element 32, ground wire inlet wire element 13 with go out kind of thread elements 23 and be flexibly connected with ground wire connecting element 33.
As one preferably embodiment, electrically connected by pluggable mode between first-phase connecting element 311, second-phase connecting element 312 and third phase connecting element 313 that in three-phase firewire inlet wire element 11, each phase firewire inlet wire connector (1112,1122,1132) is corresponding with three-phase connecting element 31, in zero line inlet wire element 12, zero line inlet wire connector 122 is electrically connected by pluggable mode with zero line connecting element 32, and in ground wire inlet wire element 13, ground wire inlet wire connector 132 is electrically connected by overlapping mode with ground wire connecting element 33；Three-phase firewire is gone out each phase firewire in kind of thread elements 21 and goes out and electrically connected by pluggable mode between wire connections (2112,2122,2132) the first-phase connecting element 311 corresponding with three-phase connecting element 31, second-phase connecting element 312 and third phase connecting element 313, zero line is gone out zero line in kind of thread elements 22 and goes out wire connections 222 and electrically connected by pluggable mode with zero line connecting element 32, and ground wire is gone out ground wire in kind of thread elements 13 and goes out wire connections 132 and electrically connected by overlapping mode with ground wire connecting element 33.
In order to coordinate the installation site of each element in wire inlet unit 10 and outgoing line unit 20, the cross section of the installing plate 34 connecting unit 30 is stairstepping.As a kind of preferred implementation, installing plate 34 is integrally-formed by bending, installing plate 34 farther includes the first installing plate the 341, second installing plate 342 and the 3rd installing plate 343, first installing plate 341 and the second installing plate 342 are connected by the 3rd installing plate 343, and the height of the first installing plate 341 is higher than the second installing plate 342.
Three-phase connecting element 31 is arranged on the first installing plate 341, and it is highly consistent that each element that is connected (311,312,313) is arranged on the first installing plate 341.Zero line connecting element 32 and ground wire connecting element 33 are arranged on the second installing plate 342.The difference in height of zero line connecting element 32 be connected element (311,312,313) each with three-phase connecting element is the difference in height between the first installing plate 341 and the second installing plate 342.
In order to Appropriate application three-phase firewire go out kind of thread elements 21, zero line go out kind of thread elements 22 staged distribution produce space, reduce floor space, zero line connecting element 32 is in three-phase firewire and goes out the lower section of kind of thread elements 21, and ground wire connecting element 33 is connected with the second installing plate 342 end of installing plate 34.
Second installing plate 342 end is bent to form a non-horizontal surface, and the non-horizontal surface that ground wire connecting element 33 is bent to form with the second installing plate 342 end is connected.The cross section of ground wire connecting element 33 is L-shaped, and the non-horizontal surface that the one side of ground wire connecting element 33 and the second installing plate 342 are bent to form connects.Second installing plate 342 end is preferably bent to form a vertical, and the vertical that the one side of ground wire connecting element 33 and the second installing plate 342 end are bent to form connects.The connected mode of ground wire connecting element 33 and the second installing plate 342 end is preferably and is spirally connected.
It should be noted that, installing plate 34 is made for insulant, and such ground wire connecting element 33 is connected with the end of the second installing plate 342 of installing plate 34, and ground wire connecting element 33 keeps ground connection, this ensure that ground wire grounded, increase the safety of whole low-voltage cable junction box.
Even more noteworthy, three-phase firewire connecting element 31, zero line connecting element 32, ground wire connecting element 33 are copper bar.
In order to improve safety, each outgoing line unit 20 farther includes three fuses 25, each fuse 25 arranges inside the outlet lid 241 of wire-outlet rack 24, the corresponding each phase going out kind of thread elements 21 with three-phase firewire of each fuse 25 goes out kind of thread elements (211,212,213) and is flexibly connected, and fuse contact knife position is removed material from outlet base 242 and formed arc-chutes；When outlet lid 241 closes with outlet base 242, the corresponding each phase going out kind of thread elements 21 with three-phase firewire of each fuse 25 goes out kind of thread elements (211,212,213) and is connected, and whole circuit is channel status；When opening outlet lid 241, when outlet lid 241 and outlet base 242 depart from, each fuse 25 correspondence and three-phase firewire go out each phase of kind of thread elements 21 and go out kind of thread elements (211,212,213) disconnection, and whole circuit is off-state.A corresponding observation window 251 on each fuse 25, observation window 251 is arranged between fuse 25 and outlet lid 241, is observed the working condition of corresponding fuse 25 by observation window 251.
The two ends of each fuse 25 are corresponding to be gone out each phase in kind of thread elements 21 and goes out the wire connections (2112,2122,2132) that outes of kind of thread elements (211,212,213) and be flexibly connected with three-phase firewire.
Each phase goes out the wire connections (2112,2122,2132) that outes of kind of thread elements (211,212,213) and farther includes an outlet connection assist (21121,21221,21321) and outlet conversion connector (21122,21222,21322), each phase outlet connection assist (21121,21221,21321) connects with corresponding each phase outlet joint (2111,2121,2131), and each phase outlet conversion connector (21122,21222,21322) is connected by pluggable mode with corresponding three-phase connecting element 31.
The two ends of each fuse 25 are corresponding, and and each phase goes out to go out in kind of thread elements (211,212,213) outlet conversion connector (21122,21222,21322) of wire connections (2112,2122,2132) and outlet connection assist (21121,21221,21321) is flexibly connected.
In order to prevent electric shock accidents; protection personal safety; connecting unit 30 and farther include at least four insulating protective cover 35, in three-phase connecting element 31, each element that is connected (311,312,313) and zero line connecting element 32 are respectively in the insulating protective cover 35 of correspondence.
Insulating protective cover 35 is in lattice-shaped envelope structure; each insulating protective cover 35 is arranged on installing plate 34, and in three-phase connecting element 31, each element that is connected (311,312,313) and zero line connecting element 32 are respectively at insulating protective cover 35 inside of correspondence.
Fig. 9 be in low-voltage cable junction box provided by the invention in wire inlet unit and outgoing line unit each joint at the distribution schematic diagram connected on unit.As it is shown in figure 9, joint (2111,2121,2131) the non-one_to_one corresponding in lengthwise position that in this low-voltage cable junction box, the joint in wire inlet unit 10 (1111,1121,1131) is corresponding with outgoing line unit.(2111,2121,2131) corresponding with outgoing line unit as the joint (1111,1121,1131) in a kind of preferred implementation wire inlet unit 10 stagger in lengthwise position.In addition, in order to utilize equipment space, reduce equipment volume, the orthographic projection of three-phase firewire lead-in line joint (1111,1121,1131) is on the first installing plate 341 of installing plate 34, and the orthographic projection of zero line lead-in line joint 121, ground wire lead-in line joint 131, three-phase firewire outlet joint (2111,2121,2131), zero line outlet joint 221 and ground wire outlet joint 231 is on the 3rd installing plate 343 and/or the second installing plate 343 of installing plate.Each element that is connected (311,312,313) of three-phase connecting element 31 is distributed on the first installing plate 341 of installing plate and is in three-phase lead-in line joint (1111,1121,1131) lower section；Zero line connecting element 32 is arranged on the second installing plate 342, three-phase firewire outlet joint (2111,2121,2131) staged arrangement produce gap in, be in first-phase live wire lift one's head 2111 lower section；Ground wire connecting element 33 is on the side of the second installing plate 342, and the non-horizontal surface being bent to form with the side of the second installing plate 342 is connected.
Figure 10 is the another kind of preferred implementation schematic diagram of low-voltage cable junction box provided by the invention.Figure 11 is multiple low-voltage cable junction box connection diagram provided by the invention.As shown in Figure 10 and Figure 11, one can be shared enter line cable for realizing multiple low-voltage cable junction box, reduce each low-voltage cable junction box and repeat wiring, avoid circuit in cable box numerous and diverse, making configuration more distinct succinctly, inventor, on any structure basis of above-mentioned low-voltage cable box, increases by a wire inlet unit 10 in each low-voltage cable junction box, being achieved in that multiple low-voltage cable junction box is cascaded, multiple low-voltage cable junction boxes can share one and enter line cable.
As shown in Figure 10 and Figure 11, multiple low-voltage cable junction boxes are cascaded, each low-voltage cable junction box includes two wire inlet units 10, at least one outgoing line unit 20 and connects the connection unit 30 of wire inlet unit 10 and outgoing line unit 20, two wire inlet unit 10 side by side parallel are arranged, outgoing line unit 20 and two wire inlet unit 10 side by side parallel, outgoing line unit 20 is arranged on the homonymy of wire inlet unit 10, wire inlet unit 10, outgoing line unit 20 all be connected unit 30 and be vertically arranged.Cable enters from each low-voltage cable junction box wire inlet unit 10, then the wire inlet unit 10 gone out with another low-voltage cable junction box from another wire inlet unit 10 is connected, then by that analogy.In each low-voltage cable junction box, it is parallel relationship between two wire inlet units 10 and outgoing line unit 20, so keeps the voltage between wire inlet unit 10 and outgoing line unit 20 consistent, thus the voltage in multiple low voltage voltage feeder pillars is to maintain unanimously.
Finally it is necessary described herein: above example is served only for technical scheme is described in more detail; it is not intended that limiting the scope of the invention, some nonessential improvement and adjustment that those skilled in the art makes according to the foregoing of the present invention belong to protection scope of the present invention.
Claims (10)
1. remote-controllable type low-voltage cable junction box, it is characterized in that, including: at least one wire inlet unit, multiple outgoing line unit and connect unit, wire inlet unit includes three-phase firewire inlet wire element, zero line inlet wire element, ground wire inlet wire element and leading-in bracket, wherein to be divided on leading-in bracket integral for each inlet wire element, outgoing line unit includes that three-phase firewire goes out kind of thread elements, zero line goes out kind of thread elements, ground wire goes out kind of thread elements and wire-outlet rack, and wherein respectively going out kind of thread elements, to be divided on wire-outlet rack integral；Each element in wire inlet unit and outgoing line unit separately be connected unit electrical connection；Also including a real-time monitoring terminal, described real-time monitoring terminal includes the induction module of data cube computation, transport module, CPU module and alarm module.
2. low-voltage cable junction box as claimed in claim 1, it is characterised in that: wire inlet unit and outgoing line unit be arranged in parallel.
3. low-voltage cable junction box as claimed in claim 1, it is characterised in that: wire inlet unit, outgoing line unit all be connected unit and be vertically arranged.
4. low-voltage cable junction box as claimed in claim 1, it is characterised in that: wire inlet unit, outgoing line unit become a network structure with being connected unit.
5. the low-voltage cable junction box as described in as arbitrary in claim 1, it is characterised in that: each low-voltage cable junction box farther includes two wire inlet units, and two wire inlet unit side by side parallel are arranged, two wire inlet units and outgoing line unit be connected unit connection.
6. low-voltage cable junction box as claimed in claim 5, it is characterized in that: multiple low-voltage cable junction boxes are cascaded a shared cable, cable enters from each low-voltage cable junction box wire inlet unit, then the wire inlet unit gone out with another low-voltage cable junction box from another wire inlet unit is connected.
7. the low-voltage cable junction box as described in as arbitrary in claim 1-6, it is characterised in that: wire inlet unit and outgoing line unit in low-voltage cable junction box are connected unit and link into an integrated entity.
8. low-voltage cable junction box as claimed in claim 1, it is characterised in that: connect unit and be positioned at the lower section of outgoing line unit and wire inlet unit.
9. low-voltage cable junction box as claimed in claim 1, it is characterised in that: outgoing line unit and in column the riding upon on connection unit of wire inlet unit.
10. low-voltage cable junction box as claimed in claim 1, it is characterised in that: multiple outgoing line units set up the homonymy with wire inlet unit separately.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510885859.XA CN105811348A (en) | 2014-04-14 | 2014-04-14 | Remote controllable low-voltage cable branch box |
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| CN201410148288.7A CN104979792B (en) | 2014-04-14 | 2014-04-14 | A kind of low-voltage cable junction box |
| CN201510885859.XA CN105811348A (en) | 2014-04-14 | 2014-04-14 | Remote controllable low-voltage cable branch box |
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| CN105914588A (en) * | 2016-06-03 | 2016-08-31 | 湖南昊晟机电设备有限公司 | Multi-circuit-breaker power distribution cabinet or power distribution box |
| CN109301739B (en) * | 2018-11-14 | 2020-03-03 | 国网浙江新昌县供电有限公司 | Insulation isolation device for live replacement of circuit breaker in low-voltage cable branch box |
| CN111182722B (en) * | 2020-02-26 | 2021-01-29 | 王致刚 | MCU application circuit board of modularization concatenation |
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| DE102004007525A1 (en) * | 2004-02-17 | 2005-09-08 | R. Stahl Schaltgeräte GmbH | junction box |
| JP2006101582A (en) * | 2004-09-28 | 2006-04-13 | Chugoku Electric Power Co Inc:The | Low-voltage divider |
| CN103151741B (en) * | 2013-03-29 | 2016-04-13 | 湖南昊晟机电设备有限公司 | A kind of low-voltage cable junction box line bus-bar system and mounting means thereof |
| CN103227438B (en) * | 2013-03-29 | 2016-04-13 | 湖南昊晟机电设备有限公司 | A kind of low-voltage cable junction box outlet module |
| CN103151754B (en) * | 2013-03-29 | 2016-01-20 | 湖南昊晟机电设备有限公司 | A kind of low-voltage cable junction box line connected mode and device |
| CN203205793U (en) * | 2013-04-01 | 2013-09-18 | 湖南昊晟机电设备有限公司 | Low voltage cable branch case inlet wire module |
| CN203859482U (en) * | 2014-04-14 | 2014-10-01 | 湖南国奥电力设备有限公司 | Low-voltage cable branch box |
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Application publication date: 20160727 |