CN2847612Y

CN2847612Y - Line distribution adaptor for extracting type 1/2 unit

Info

Publication number: CN2847612Y
Application number: CN 200520077427
Authority: CN
Inventors: 周金隆
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-11-24
Filing date: 2005-11-24
Publication date: 2006-12-13
Anticipated expiration: 2015-11-24

Abstract

The utility model relates to a line distribution adaptor for an extracting type 1/2 unit, which has a structure that a branch box and an inlet and outlet connector are respectively installed in a metal cover shell. A wire inlet socket of the power supply end of the adapter and the wire outlet end are arranged in a ladder shape; both sides of the branch box are provided with air passage openings; the bottom of the box body is provided with a heat radiation channel; a cover of the branch box and a branch box body are clamped by a hasp; the cover of the branch box is provided with an isolated plate, and the shape of a part is provided with a reinforcing rib. When a small bus bar in a special shape which is arranged in a wiring channel of the branch box and a wire inlet insert sheet are riveted by copper plates and the small bus bar in a special shape, a transition component is arranged. The utility model has the advantages that the ampacity of the bus bar in a special shape is increased; copper materials are saved, and a wire inlet arranged manner increases the movable stable property of the device. The bus bar in a special shape and a wire inlet connecting plate are connected by transition; the contact resistance is reduced; the temperature rise requirements of the device are satisfied, and a grade of a feeding loop of the 1/2 extracting type unit in a power distribution cabinet is increased to 125A from the original 63A. The vertical wire outlet end of a trapezoid is convenient for the connection of externally connected cables.

Description

Pull-out type Unit 1/2 lane assignment adapter

Technical field

The utility model proposes a kind of lane assignment adapter that is used in 1/2 unit drawer in the pull-out type low-voltage distribution cabinet, belong to the dedicated devices technical field of using in the low-voltage distribution switchgear assembly.

Background technology

Pull-out type Unit 1/2 is to be connected with power distribution cabinet (MCC) vertical bus by the end of incoming cables socket with the lane assignment adapter, converts in a kind of pull-out type low-voltage distribution cabinet that two road inlet wires, two tunnel outlets use the MCC cabinet again to special-purpose switching device.

This adapter inlet wire plug mostly is that three-phase is arranged in parallel or two-phase arranged side by side is mutually staggered in the prior art, inlet wire with inserted sheet be connected copper coin with the inlet wire between the rectangular bus bar along separate routes and directly be riveted on the square type bus.Be to install between the box body of the junction box of installation inlet wire plug blades and shunt bus and the lid with the screw closed.Its defective is that inlet wire connects that face directly is connected with face between copper coin and the shunt bus, contact-making surface is big, it is inhomogeneous to connect pressure, the airtight installation air of junction box can not convection current, electric current can not effectively shed by the heat that bus produces, cause 1/2 unit drawer that little current switch can only be installed, can not satisfy present many engineering designs and require 1/2 unit drawer to adorn the requirement of current class in the feeding circuit, and the end of incoming cables arrangement mode of transducer to bear moving stabilizing power also not ideal enough.The design of part design of prior art transducer is also reasonable inadequately.Thickness is excessive, and wall unevenness is even, and yielding, cost of raw materials used is big.

Summary of the invention

The utility model purpose is to overcome above-mentioned defective, propose that a kind of to have a short time withstand current of bearing higher, easy to install and use, rational in infrastructure, economize with material, a kind of 1/2 unit drawer lane assignment adapter of good looking appearance, technical solution of the present utility model: consider in the pull-out type power distribution cabinet to of the requirement of 1/2 tapping unit with feeding circuit current class and non-fuse motor starter cooperation, it is the aeration type structure that the design of the interior junction box parts of adapter changes closed structure, installing along separate routes in box body, the trench bottom of bus has the heat radiation notch, design has the ventilation notch in the junction box both sides, make the heat that is produced in extraneous air and the energising back box form convection current, thereby the temperature rise in the reduction junction box, bus changes special-shaped little bus into by general rectangular bus bar along separate routes, special-shaped bus is compared with square type bus, reason owing to kelvin effect and space, same ampacity, the sectional area of special-shaped bus is less than square type busbar cross-section long-pending about 30%, saved copper consumption, and adopt the transition ways of connecting between the copper coin of inlet wire inserted sheet connection and the special-shaped little bus, its tie point contact is reduced, connecting pressure increases, thereby reduced contact resistance, guaranteed the temperature rise requirement of adapter after electric current increases, adopted above-mentioned measure, 1/2 unit drawer uses as feeding circuit, and current class can increase to 125A by 63A.In the adapter junction box and outlet box body structure according to thermoplastic plastic contract than designing requirement, wall thickness is reduced to 2.5～3mm by 6 original～8mm, and increases to have designed and prevent the reinforcement that is out of shape, the connection between the box body changes buckle into and connects.Design has the division board of protrusion on the junction box lid, after lid and the box body assembling, strengthened creepage distance between the special-shaped little bus duct of placement, has satisfied in the electric property requirement to creepage distance.

The turnover line end of adapter is that stairstepping is arranged, reduced alternate moving stable influence, improved moving stabilizing power, transducer leading-out terminal part laterally is connected with external cable by original isosceles triangle and changes notch cuttype into and vertically be connected with external cable, has made things convenient for external connection.

The separated time adapter good looking appearance of this structure is saved with material, has reduced the device manufacturing cost.Advantage of the present utility model: special-shaped copper busbar has increased ampacity, saved copper material, reduced manufacturing cost, the arrangement mode of inlet wire has improved the dynamic stability of device, guaranteed the temperature rise requirement of device, trapezoidal vertical leading-out terminal has made things convenient for the connection of external cable, makes that 1/2 tapping unit feeding circuit grade increases to 125A by original 63A in the pull-out type power distribution cabinet, make things convenient for selecting for use of 1/2 unit drawer, increased the loop output number of pull-out type power distribution cabinet

Description of drawings

Accompanying drawing 1 is a structural representation of the present utility model

Accompanying drawing 2 is left views of Fig. 1

Accompanying drawing 3 is junction box modular construction schematic diagrames

Accompanying drawing 4,5 is respectively the right side, the left view of Fig. 3

Accompanying drawing 6 is vertical view cutaway drawings of Fig. 3

Accompanying drawing 7 is the A enlarged diagrams among Fig. 6

Accompanying drawing 8 is structural representations of the little bus parts of unidirectional shunt

Accompanying drawing 9 is that inlet wire connects the connection diagram between copper coin and the little bus.

Among the figure 1 is that three-phase inlet wire socket, 2 is two tunnel outlet links, the 3rd, wind passage mouth, the 4th, the heat radiation notch, the 5th of box body bottom, hasp, the 6th, division board, the 7th, reinforcement, the 8th, special-shaped little bus, the 9th, the connection copper coin, the 10th of inlet wire inserted sheet, transition piece.

Embodiment

The contrast accompanying drawing, its structure is that pull-out type Unit 1/2 is installed in respectively in the metal case with junction box, connector assembly in the lane assignment adapter, adapter power end three-phase inlet wire socket 1 is stairstepping with three-phase leading-out terminal 2 and arranges; Junction box two sides are provided with wind passage mouth 3; The box body bottom is provided with heat radiation slotted eye 4, and separated time lid and separated time box body are by hasp 5 clampings, and junction box covers and is provided with division board 6, and the profile of all insulating mounting parts is provided with the uniform reinforcement 7 of thickness; Placing the shunt bus in the junction box trough is special-shaped little bus 8, adds transition piece 10 when copper coin 9 and special-shaped little bus 8 are riveted with being connected between special-shaped little bus 8 and the inlet wire inserted sheet.

Claims

1, pull-out type Unit 1/2 lane assignment adapter, it is characterized in that pull-out type Unit 1/2 is installed in respectively in the metal case with junction box, turnover connector assembly in the lane assignment adapter, adapter power end three-phase inlet wire socket (1) is stairstepping with three-phase leading-out terminal (2) and arranges; Junction box two sides are provided with wind passage mouth (3); The box body bottom is provided with heat radiation slotted eye (4), and separated time lid and separated time box body are by hasp (5) clamping, and junction box covers and is provided with division board (6), and the periphery of installed part is provided with the uniform reinforcement of thickness (7); Placing the shunt bus in the junction box trough is special-shaped little bus (8), adds transition piece (10) when copper coin (9) and special-shaped little bus (8) are riveted with being connected between special-shaped little bus (8) and the inlet wire inserted sheet.