CN202034698U - Heavy current metal armored draw-out type switch cabinet - Google Patents
Heavy current metal armored draw-out type switch cabinet Download PDFInfo
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- CN202034698U CN202034698U CN2011200694118U CN201120069411U CN202034698U CN 202034698 U CN202034698 U CN 202034698U CN 2011200694118 U CN2011200694118 U CN 2011200694118U CN 201120069411 U CN201120069411 U CN 201120069411U CN 202034698 U CN202034698 U CN 202034698U
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Abstract
A heavy current metal armored draw-out type switch cabinet relates to a switch cabinet and comprises a cabinet body, a breaker chamber is arranged on the front of the cabinet body, an instrument chamber is arranged on the upper part of the breaker chamber, a bus chamber is arranged behind the instrument chamber, a cable chamber is arranged below the bus chamber, and metal separating plates are used to separate the chambers. A main bus inside the bus chamber and an interbus inside the cable chamber are respectively connected with static contacts on the breaker chamber, the main bus and the interbus are double-layer copper buses, a current transformer is arranged between the interbus inside the cable chamber and the static contacts, and the current transformer is a bus type transformer. An independent cable wire entering/outgoing cabinet is arranged on one side of the cabinet body, a cable installing bus is arranged inside the cable wire entering/outgoing cabinet, the two ends of the cable installing bus are provided with pillar insulators, and the interbus is led out from the cable chamber to the cable wire entering/outgoing cabinet and connected with the cable installing bus. The switch cabinet is low in cost, has small heat radiation points, and has large cable installing space.
Description
Technical field
The utility model relates to a kind of switch cubicle, specifically a kind of big electric current metal armouring draw out switchgear cabinet.
Background technology
The design current of conventional high-pressure metal armouring draw out switchgear is below 3150A, along with the further increase of electric power system capacity and vacuum circuit-breaker begin to be applied in the outlet of Hair Fixer motor, market constantly increases the demand of big electric current switchgear assembly, presses big electric current switchgear assembly to face a comprehensive acid test during this just makes.
For specified short time withstand current is the switchgear of 80kA, and just often its Rated peak withstand current is 200kA, and its Rated peak withstand current is 2.8 times of specified short time withstand current when being applied to generator outlet, i.e. 224kA.Thermal effect during its short circuit and stress effect are quite huge, and choose reasonable bus and arrangement are particularly important.
General rectangle copper busbar maximum specification commonly used is 120mm * 10mm, and ampacity is about 2220A, if choose by 2 layers of TMX120mm * 10mm, the still not enough 4000A of its rated current-carrying capacity, because multilayer bus heat dispersion is bad, consuming cost is big and take up room bigger.
Other forms of bus has circle, D type, grooved etc., and circle and D type bus kelvin effect and anticorona effect are better, but connects more complicated.
There is following several problem in the 4000A high-current switch equipment of routine techniques production:
1) 3-120mm * 10mm copper busbar can satisfy the needs of 4000A ampacity, but it is big to take up room, and stock utilization is low, the cost height.
2) the fixing and overlap joint of bus, and the overlap joint between bus and the fixed contact is difficult to guarantee reliable contact from technology, easily heating.
3) the cable installing space is little, and many high-tension cables can't be installed, and the 4000A rated current needs 10 φ 180mm high-tension cables.
The utility model content
The purpose of this utility model is to provide a kind of big electric current metal armouring draw out switchgear cabinet, addresses the above problem.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of big electric current metal armouring draw out switchgear cabinet, comprise cabinet, the cabinet front portion is provided with breaker chamber, the top of breaker chamber is provided with the control room, the back of control room is provided with bus-bar room, the below of bus-bar room is provided with the cable vault, all adopt metal partion (metp) between each compartment, interbus in main bus bar in the described bus-bar room and the cable vault is connected with fixed contact on the breaker chamber respectively, it is characterized in that, described main bus bar and interbus are double-deck copper busbar, also are provided with current transformer between interbus in the cable vault and the fixed contact, and described current transformer is the bus-type instrument transformer; Described cabinet one side also is provided with independently cable in-out cabinet, is provided with cable in the cable turnover cabinet bus is installed, and the two ends that cable is installed bus are provided with post insulator, and interbus is led to cable in-out cabinet and with cable bus is installed by the cable vault and is connected; Described bus adopts 125mm * 12mm specification; Cable in the described cable turnover cabinet is installed bus and is not less than 1200mm apart from ground level.
The beneficial effects of the utility model are: the copper busbar consumption reduces by 16%, solve three layers of bus connection and bus and be connected difficult technological problems with fixed contact, and the overlap joint reliability of two layers of bus is apparently higher than the overlap joint of three layers of bus, also have clear improvement with the radiating condition of fixed contact junction, independently cable in-out cabinet can be installed the high-tension cable of 10 φ 180mm specifications easily.
Description of drawings
Fig. 1 is a front view of the present utility model,
Fig. 2 is an A-A view of the present utility model,
Fig. 3 is a vertical view of the present utility model.
Among the figure: 1 cabinet, 2 breaker chambers, 3 control rooms, 4 bus-bar rooms, 5 cable vaults, 6 main bus bars, 7 interbus, 8 fixed contacts, 9 current transformers, 10 cable in-out cabinets, 11 cables are installed bus, 12 post insulators
Embodiment
As Fig. 1, Fig. 2, shown in Figure 3, a kind of big electric current metal armouring draw out switchgear cabinet, comprise cabinet 1, cabinet 1 front portion is provided with breaker chamber 2, the top of breaker chamber 2 is provided with control room 3, the back of control room 3 is provided with bus-bar room 4, and the below of bus-bar room 4 is provided with cable vault 5, all adopts metal partion (metp) between each compartment, interbus 7 in main bus bar 6 in the described bus-bar room 4 and the cable vault 5 is connected with fixed contact 8 on the breaker chamber 2 respectively, described main bus bar 6 and interbus 7 are double-deck copper busbar, also are provided with current transformer 9 between interbus 7 in the cable vault 5 and the fixed contact 8, and described current transformer 9 is the bus-type instrument transformer; Described cabinet 1 one sides also are provided with independently cable in-out cabinet 10, be provided with cable in the cable turnover cabinet 10 bus 11 is installed, the two ends that cable is installed bus 11 are provided with post insulator 12, and interbus 7 is led to cable in-out cabinet 10 and with cable bus 11 is installed by cable vault 5 and is connected; Described bus adopts 125mm * 12mm specification; Cable in the described cable turnover cabinet 10 is installed bus 11 and is not less than 1200mm apart from ground level.
Bus of the present utility model adopts special requirement 125mm * 12mm, and is consistent with the bus of conventional 120mm * 10mm on processing technology, uses common process equipment to finish, and do not need to purchase in addition new equipment, easy to process.Every phase bus adopts double-deck, and its ampacity is calculated as follows:
The ampacity I of individual layer 125mmx12mm rectangle copper busbar in the time of 40 ℃
d(A):
I
d＝(b+8.5)h＝(12+8.5)x125＝2562.5
The relational expression of double-deck copper busbar and individual layer bus ampacity ampacity in the time of 40 ℃:
I2＝1.58Id＝1.58x2561.5＝4048
This ampacity can satisfy the needs of rated current 4000A switchgear ampacity, owing to adopt its overlap joint reliability of double-deck bus to be higher than the overlap joint of three layers of bus, also has clear improvement with the radiating condition of fixed contact 8 junctions.
Current transformer 9 in the cable vault 5 is selected the bus-type instrument transformer for use, and interbus 7 can directly pass current transformer 0, makes things convenient for bus processing, reduce the bus tie point, reduce heat generating spot simultaneously, solving conventional current instrument transformer and bus has tie point, the problem that heat generating spot is many.
The space, cabinet 1 cable vault of conventional design is low, the high-tension cable of 6 φ 180mm specifications can only be installed, can not satisfy the demand of 4000A electric current turnover, the utility model is at the cabinet 1 other independently cable in-out cabinet 10 that is provided with, and private cable is installed bus 11 is installed, more than 1200mm, the high-tension cable of 10 φ 180mm specifications can be installed easily apart from ground level.The two ends that cable is installed bus 11 also are provided with post insulator 12, can overcome the dynamo-electric effect of bus.
Claims (3)
1. one kind big electric current metal armouring draw out switchgear cabinet, comprise cabinet, the cabinet front portion is provided with breaker chamber, the top of breaker chamber is provided with the control room, the back of control room is provided with bus-bar room, the below of bus-bar room is provided with the cable vault, all adopt metal partion (metp) between each compartment, interbus in main bus bar in the described bus-bar room and the cable vault is connected with fixed contact on the breaker chamber respectively, it is characterized in that, described main bus bar and interbus are double-deck copper busbar, also are provided with current transformer between interbus in the cable vault and the fixed contact, and described current transformer is the bus-type instrument transformer; Described cabinet one side also is provided with independently cable in-out cabinet, is provided with cable in the cable turnover cabinet bus is installed, and the two ends that cable is installed bus are provided with post insulator, and interbus is led to cable in-out cabinet and with cable bus is installed by the cable vault and is connected.
2. a kind of big electric current metal armouring draw out switchgear cabinet according to claim 1 is characterized in that, described bus adopts 125mm * 12mm specification.
3. a kind of big electric current metal armouring draw out switchgear cabinet according to claim 1 is characterized in that, the cable in the described cable turnover cabinet is installed bus and is not less than 1200mm apart from ground level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200694118U CN202034698U (en) | 2011-03-16 | 2011-03-16 | Heavy current metal armored draw-out type switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200694118U CN202034698U (en) | 2011-03-16 | 2011-03-16 | Heavy current metal armored draw-out type switch cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202034698U true CN202034698U (en) | 2011-11-09 |
Family
ID=44896984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200694118U Expired - Lifetime CN202034698U (en) | 2011-03-16 | 2011-03-16 | Heavy current metal armored draw-out type switch cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202034698U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947002A (en) * | 2017-11-13 | 2018-04-20 | 上海基胜能源股份有限公司 | A kind of Novel switch cabinet |
| CN108512057A (en) * | 2018-05-10 | 2018-09-07 | 河南森源电气股份有限公司 | A kind of high-tension switch cabinet group |
-
2011
- 2011-03-16 CN CN2011200694118U patent/CN202034698U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947002A (en) * | 2017-11-13 | 2018-04-20 | 上海基胜能源股份有限公司 | A kind of Novel switch cabinet |
| CN107947002B (en) * | 2017-11-13 | 2023-12-22 | 上海基胜能源股份有限公司 | Switch cabinet |
| CN108512057A (en) * | 2018-05-10 | 2018-09-07 | 河南森源电气股份有限公司 | A kind of high-tension switch cabinet group |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111109 |
|
| CX01 | Expiry of patent term |