CN201336508Y - Secondary distribution circuit for industrial and mining workshops - Google Patents
Secondary distribution circuit for industrial and mining workshops Download PDFInfo
- Publication number
- CN201336508Y CN201336508Y CNU2008203034550U CN200820303455U CN201336508Y CN 201336508 Y CN201336508 Y CN 201336508Y CN U2008203034550 U CNU2008203034550 U CN U2008203034550U CN 200820303455 U CN200820303455 U CN 200820303455U CN 201336508 Y CN201336508 Y CN 201336508Y
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- Prior art keywords
- distribution cabinet
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- primary
- load
- circuit
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Abstract
The utility model discloses a secondary distribution circuit for industrial and mining workshops, which comprises a power inlet wire (1). The power inlet wire (1) is connected with a transformer (2) which is connected with a low-voltage bus bridge (3); and the low-voltage bus bridge (3) is connected with a primary distribution cabinet (4.1) which is connected with a primary load circuit (6) through a primary breaker (5.1), particularly the primary distribution cabinet (4.1) is connected with a secondary distribution cabinet (4.2) by the primary breaker (5.1), and the secondary distribution cabinet (4.2) is connected with a secondary load circuit (7) by a secondary breaker (5.2). The utility model adopts a secondary distribution circuit, thereby substantially reducing the primary breakers supplying power to the secondary loads, and having favorable effect of reducing the primary investment, and reasonably planning and classifying power supply equipment; and in addition, the power supply equipment is more, the secondary loads are more, and the effect is more obvirous.
Description
Technical field
The utility model relates to the distribution line of a kind of industrial and mining enterprises inner workshop switchgear house.
Background technology
The workshop switchgear house is that factory and enterprise supplies, the important component part of distribution network, is the tie of the dissimilar power consumption equipment in connection hinge distribution center of enterprise and each workshop.Power load in the workshop can be divided into a stage load, two stage loads and three stage loads by importance.Wherein I and II load as interruption of power supply will cause life injures and deaths or politics, economic loss, and its power supply reliability is had relatively high expectations, so is called as important load; Three stage loads are generally appliance load, and power supply reliability requires lower, therefore are called as time stage load.
In industrial and mining enterprises, the power supply reliability of most of power consumption equipment requires all higher.Along with the raising of Chinese economic development and technology level, the production scale of enterprise is also increasing, so the power of power consumption equipment and transformer capacity are also increasing, and is also more and more higher to the requirement of power supply reliability.In present industrial and mining enterprises, the load level of most of technology main equipment is a secondary.For the power supply reliability of meeting tier 2 load, its distribution system all adopts sectionalized single busbar connection generally speaking, and the confession distribution system of double-cricuit supply inlet wire is this for the distribution form, can satisfy the reliability requirement of important load to power supply.
In present stage, the general break-make that adopts circuit breaker control supply line, in the one-level distribution system, because power distribution cabinet is to be connected with bus with transformer, therefore Circuit Fault on Secondary Transformer is bigger to the short circuit current in one-level circuit breaker exit, and the selection of circuit breaker must be satisfied the requirement of disjunction short circuit current when doing for the distribution design.Generally speaking, short circuit current constantly increases along with the increase of transformer capacity, and the big more then requirement to limit short circuit breaking capacity of transformer capacity is just big more, and the price of circuit breaker can be multiplied along with the increase of short circuit breaking capacity.Though the one-level distribution system can satisfy the power supply reliability of severity level load, for non-importance level load, there is no need.Some three stage loads i.e. time stage load such as air-conditioning, general lighting lamp etc., its load is very little, and have a power failure in short-term and can not impact enterprise's production, as its distribution system and above-mentioned important load are concentrated in together, can cause load classification unclear, and the circuit breaker with high standard is time stage load power supply, the waste investment.
The utility model content
The purpose of this utility model is: a kind of industrial and mineral workshop secondary distribution line is provided, and this line construction is simple, and it is convenient to implement, to overcome the deficiencies such as the wasting of resources that prior art exists.
The utility model is to constitute like this: it comprises electric power incoming line, electric power incoming line is connected with transformer, transformer and low-voltage bus bar bridging connect, the low-voltage bus bar bridge is connected with the one-level power distribution cabinet, the one-level power distribution cabinet is connected with one-level load circuit by the one-level circuit breaker, particularly the one-level power distribution cabinet also is connected with the secondary power distribution cabinet by the one-level circuit breaker, and the secondary power distribution cabinet is connected with secondary load circuit by the secondary circuit breaker.
Owing to adopted technique scheme, to compare with existing scheme, the utility model has increased by a station power distribution cabinet more, but can reduce the feeder assembly to inferior stage load in the one-level power distribution cabinet, and inferior stage load is many more, and the loop of minimizing is also many more.Because the one-level power distribution cabinet is to connect the workshop transformer with bus, its short circuit current is bigger, cause the desired limit short circuit breaking capacity of circuit breaker on the feeder assembly of one-level power distribution cabinet also big, on equipment manufacturing cost, the circuit breaker that rated current is identical, the big more then price of short circuit breaking capacity is high more, and increase rate is very big.
As mentioned above, the utility model adopts the secondary distribution line, can significantly be reduced to the one-level circuit breaker (being the high breaking capacity circuit breaker) of two stage loads power supply, for reducing once investment, the power supply unit of making rational planning for, classify is effectively, and power supplying and distributing equipment is many more, and two stage loads are many more, and effect is obvious more.
Description of drawings
Fig. 1 is the one-level distribution system structural representation of prior art;
Fig. 2 is a distribution system structural representation of the present utility model.
Embodiment
Embodiment of the present utility model: it includes importance level load and time stage load are supplied distribution by the same area switchgear house circuit.As shown in Figure 2,1 is 1#, 2# electric power incoming line; 2 is transformer; 3 is the low-voltage bus bar bridge; 4.1 be the one-level power distribution cabinet; 4.2 be the secondary power distribution cabinet; 5.1 be the one-level circuit breaker; 5.2 be the secondary circuit breaker; 6 is a stage load; 7 is two stage loads; Its line construction is: electric power incoming line 1 is connected with transformer 2, transformer 2 is connected with low-voltage bus bar bridge 3, low-voltage bus bar bridge 3 is connected with one-level power distribution cabinet 4.1, one-level power distribution cabinet 4.1 is connected with one-level load circuit 6 by one-level circuit breaker 5.1, particularly one-level power distribution cabinet 4.1 also is connected with secondary power distribution cabinet 4.2 by one-level circuit breaker 5.1, and secondary power distribution cabinet 4.2 is connected with secondary load circuit 7 by secondary circuit breaker 5.2.
From above circuit as can be seen, though increased a secondary power distribution cabinet 4.2 more, but can reduce a large amount of one-level circuit breakers 5.1 for 7 power supplies of secondary load circuit, compare and to reduce investment, and secondary load circuit 7 is many more, it is obvious more to reduce investment outlay, and can generally use in modern times large and medium-sized industrial and mining enterprises.
Claims (1)
1. industrial and mineral workshop secondary distribution line, it comprises electric power incoming line (1), electric power incoming line (1) is connected with transformer (2), transformer (2) is connected with low-voltage bus bar bridge (3), low-voltage bus bar bridge (3) is connected with one-level power distribution cabinet (4.1), one-level power distribution cabinet (4.1) is connected with one-level load circuit (6) by one-level circuit breaker (5.1), it is characterized in that: one-level power distribution cabinet (4.1) also is connected with secondary power distribution cabinet (4.2) by one-level circuit breaker (5.1), and secondary power distribution cabinet (4.2) is connected with secondary load circuit (7) by secondary circuit breaker (5.2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203034550U CN201336508Y (en) | 2008-12-17 | 2008-12-17 | Secondary distribution circuit for industrial and mining workshops |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203034550U CN201336508Y (en) | 2008-12-17 | 2008-12-17 | Secondary distribution circuit for industrial and mining workshops |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201336508Y true CN201336508Y (en) | 2009-10-28 |
Family
ID=41288170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008203034550U Expired - Fee Related CN201336508Y (en) | 2008-12-17 | 2008-12-17 | Secondary distribution circuit for industrial and mining workshops |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201336508Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324751A (en) * | 2011-09-30 | 2012-01-18 | 成都三强轧辊股份有限公司 | Novel low-voltage reactive power compensation device |
| CN102831937A (en) * | 2012-09-07 | 2012-12-19 | 吴江市博众精工科技有限公司 | Control platform for performing ventilation and electrification debugging of mechanical equipment |
-
2008
- 2008-12-17 CN CNU2008203034550U patent/CN201336508Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324751A (en) * | 2011-09-30 | 2012-01-18 | 成都三强轧辊股份有限公司 | Novel low-voltage reactive power compensation device |
| CN102831937A (en) * | 2012-09-07 | 2012-12-19 | 吴江市博众精工科技有限公司 | Control platform for performing ventilation and electrification debugging of mechanical equipment |
| CN102831937B (en) * | 2012-09-07 | 2015-06-17 | 吴江市博众精工科技有限公司 | Control platform for performing ventilation and electrification debugging of mechanical equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: GUIYANG ALUMINUM AND MAGNESIUM DESIGN INSTITUTE CO Free format text: FORMER NAME: GUIYANG ALUMINIUM AND MAGNESIUM DESIGN INST. |
|
| CP03 | Change of name, title or address |
Address after: 550081 Guiyang Province, Jinyang New District, Zhu Zhu Road, No. 2 Patentee after: Guiyang Aluminum & Magnesium Design Institute Co., Ltd. Address before: 550004 No. 208, Beijing Road, Guiyang, Guizhou Patentee before: Guiyang Aluminium and Magnesium Design Inst. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091028 Termination date: 20141217 |
|
| EXPY | Termination of patent right or utility model |