CN202103355U

CN202103355U - Armored mobile AC sealed metal switch equipment

Info

Publication number: CN202103355U
Application number: CN2010206496756U
Authority: CN
Inventors: 赵世东
Original assignee: ZHEJIANG YEYA ELECTRIC CO Ltd
Current assignee: ZHEJIANG YEYA ELECTRIC CO Ltd
Priority date: 2010-12-08
Filing date: 2010-12-08
Publication date: 2012-01-04
Anticipated expiration: 2020-12-08

Abstract

The utility model relates to a high-voltage switch cabinet, in particular to armored mobile AC sealed metal switch equipment. Each of sealed chambers arranged in a standard cabinet body according to functional modules comprises a circuit breaker chamber positioned at the middle part on the front side of the cabinet body, and a voltage transformer chamber positioned at the lower part on the front side of the cabinet body, wherein the functional modules in the sealed chambers are assembled on a handcart capable of slipping on or being positioned on a work position or a test position; the circuit breaker handcart is formed by assembling a vacuum circuit breaker, a high-voltage current-limiting fuse and an upper chassis vehicle; and the circuit breaker handcart is equivalent to one functional module in a circuit breaker chamber; and a PT handcart, equivalent to a functional module in a voltage transformer chamber, is formed by assembling a voltage transformer, an over-voltage protector and a lower chassis vehicle. The switch equipment provided by the utility model has the advantages of simple structure, convenience in mounting and maintenance, low running cost, and capability of effectively improving the running safety of a power grid and the reliability of power supply, switching off large short circuit current, and conveniently realizing combination with other switch cabinets.

Description

A kind of armored withdraw type ac metal closing switch gear

Technical field

The utility model relates to a kind of high-tension switch cabinet, particularly a kind of armored withdraw type ac metal closing switch gear.

Background technology

Electric-controlled switch cabinet of the prior art, volume is big, the internal structure layout is unreasonable for existing of having, and controls characteristics such as complicacy, and the electric-controlled switch cabinet of import exists the higher shortcoming of cost.

The utility model content

The purpose of the utility model is to provide a kind of simple in structure, easy to installation and maintenance, armored withdraw type ac metal closing switch gear that operating cost is low; With the fail safe of raising operation of power networks and the reliability of power supply; Can cut-off big short circuit current, can realize easily and cabinet with other switch cubicle.

In order to reach above-mentioned purpose; The utility model adopts following concrete technical scheme: a kind of armored withdraw type ac metal closing switch gear; Comprise in the standard cabinet and sealing chamber is set by functional module; The breaker chamber at middle part, said cabinet front side and the voltage transformer chamber that is positioned at the preceding side lower part of cabinet; Between each sealing indoor functional module collection be contained in slippage respectively and be positioned at working position or test position on handcart on, wherein circuit breaker cart is assembled with the upper base jiggering by vacuum circuit-breaker, high-voltage and current-limitation fuse and is constituted; Circuit breaker cart is equivalent to the functional module form in the breaker chamber, and the PT handcart is made up of voltage transformer, overvoltage protection device and the jiggering of going to the bottom assembling, and the PT handcart is equivalent to the functional module form in the voltage transformer chamber.

When system's generation arc grounding, device sends reclosing command through the vacuum circuit-breaker mechanism of quick electromagnetic push mechanism is closed a floodgate under the control of controller; Mechanism carries out and moves in combined floodgate; The arc grounding fault is become metal ground connection, and the assurance system still can normally move, if this moment occurs short trouble; Through the real-time detected short circuit current signal of controller; Breaker mechanism switching winding to quick electromagnetic push mechanism sends the separating brake instruction, and the circuit breaker of quick electromagnetic push mechanism is carried out the separating brake action, thereby guarantees the safety of system; And the circuit breaker of quick electromagnetic push mechanism cut-offs the threshold value of short circuit current can be at random through adjusting arbitrarily to intelligent controller; The circuit breaker of quick electromagnetic push mechanism can repeated multiple times cut-off short circuit current: institute joins high-voltage and current-limitation fuse and plays the backup protection effect, only when device action is malfunctioning, just work, thereby it is very few normally to rely on its probability of cut-offfing short circuit current; The situation that can avoid often needing to change takes place, so operating cost can greatly reduce.

The beneficial effect of the utility model is following:

1, the utility model can be opened the handcart structure of moving by the functional module setting, has improved traditional fixed mounting means, can greatly be convenient to the maintenance of equipment, and only needing when changing parts does not influence the normal power supply of system to the user with the handcart displacement yet,

Handcart also makes things convenient between service position and test position mobile simultaneously.

2, the directly mobile handcart of the utility model can make it be in respectively on working position or the test position, through the interlocking device that prevents misoperation is set between the diverse location of handcart, can avoid misoperation effectively; Such as, when circuit breaker was in "on" position, handcart can not can not be moved to working position from test from work shift to the test position;

3, the utility model is provided with chamber between sealing, and degree of protection is I:P2X when compartment door is opened, and when compartment door was closed, degree of protection can reach IP4X.

4, the utility model can make things convenient for user and other cabinet and cabinet through employing standard cabinet.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is the end view of the utility model.

Below in conjunction with accompanying drawing the utility model is done further to specify.

Embodiment

Like Fig. 1, shown in Figure 2; A kind of armored withdraw type ac metal closing switch gear; In standard cabinet 1, be provided with chamber between sealing is set by functional module; Breaker chamber 2 that comprises cabinet 1 front side middle part and the voltage transformer chamber 3 that is positioned at side lower part before the cabinet 1, between each sealing indoor functional module collection be contained in slippage respectively and be positioned at working position or the test position on handcart on.

In the practical implementation, between the working position and test position of handcart, fool proof interlocking device is set.Promptly circuit breaker cart 6 can not be removed by the service position when high-voltage alternating fast vacuum contactbreaker 8 is in closing position, perhaps can not move to the service position by test position, in case the operation of charged on/off switch.The chamber should have pressure independent of each other and discharges and rush down pressure passageway between each sealing.When breaker chamber 2 internal cause short circuits cause that internal pressure is excessive, can be through rushing down pressure passageway one 23 release pressures, equally when cable vault's internal pressure is excessive, can be through rushing down pressure passageway 2 24 release pressures.

Said high-voltage alternating fast vacuum contactbreaker 8, high-voltage and current-limitation fuse 7 and upper base jiggering 9a assembling all-in-one-piece circuit breaker cart 6; Circuit breaker cart 6 can move between from the test position to the service position on the track 13 on the cabinet 1, and can be positioned test position or service position; Voltage transformer 11, overvoltage protection device 12 and the jiggering 9b assembling all-in-one-piece PT handcart 10 of going to the bottom are installed in the voltage transformer chamber 3 of cabinet 1 bottom; PT handcart 10 can move between from the test position to the service position on the following track 14 of cabinet 1; And also can be positioned test position or service position; Current transformer 4 is installed in the cable vault 21 of cabinet 1, and main bus bar 15 of system causes in the main bus bar chamber 5 of cabinet 1.

In the practical implementation; Draw in the main bus bar chamber 5 of power supply to the cabinet 1 of system by main bus bar 15 of system; Cause the upper static contact 17 of cabinet 1 respectively through branch bar 16, receive the reclosing command that intelligent controller sends through circuit breaker cart 6 then, upper static contact 17 and middle fixed contact 18 are communicated with; Pass current transformer 4 ground connection through the busbar short circuit; Main bus bar 15 causes the following fixed contact 19 of cabinet 1 through cable, when circuit breaker cart 6 all is in the service position with PT handcart 10, detects in real time from voltage and electric current variation on main bus bar 15 through voltage transformer 11 summation current transformers 4; And feed back to intelligent controller, as the foundation of commander's high-voltage alternating fast vacuum contactbreaker 8 actions.

Claims

1. armored withdraw type ac metal closing switch gear; It is characterized in that: in cabinet, sealing chamber is set by functional module; Comprise breaker chamber that is positioned at middle part, cabinet front side and the voltage transformer chamber that is positioned at the preceding side lower part of cabinet; Functional module collection in each sealing chamber be contained in slippage respectively and be positioned at working position or the test position on handcart on, wherein circuit breaker cart is assembled with the upper base jiggering by vacuum circuit-breaker, high-voltage and current-limitation fuse and is constituted; The PT handcart is made up of voltage transformer, overvoltage protection device and the jiggering of going to the bottom assembling.