CN214176535U - Tertiary distribution device of job site interim power consumption - Google Patents
Tertiary distribution device of job site interim power consumption Download PDFInfo
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- CN214176535U CN214176535U CN202120045676.8U CN202120045676U CN214176535U CN 214176535 U CN214176535 U CN 214176535U CN 202120045676 U CN202120045676 U CN 202120045676U CN 214176535 U CN214176535 U CN 214176535U
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Abstract
A three-level power distribution device for temporary power utilization in a construction site comprises a main distribution box, a switch box, a first-level leakage protector and a second-level leakage protector; the main distribution box is electrically connected with the distribution boxes; one distribution electric box is electrically connected with a plurality of switch boxes; the first-stage leakage protector is electrically connected with the second-stage leakage protector, the first-stage leakage protector is electrically connected with the main distribution box, and the distribution box is electrically connected between the first-stage leakage protector and the second-stage leakage protector; the distance between the distribution electric box and the switch box is not more than 30m, the switch box is used for controlling power equipment or lighting equipment, and the distance between the switch box and the power equipment is not more than 3 m. The technical scheme can be applied to an auxiliary use environment to standardize the temporary electricity utilization; the power consumption requirement of cross operation is met; the potential safety hazard is reduced, the image of a construction unit is improved, and unnecessary economic loss is avoided.
Description
Technical Field
The utility model relates to a distribution device, concretely relates to tertiary distribution device of job site interim power consumption.
Background
The temporary power utilization refers to the non-permanent power utilization connected to a power supply in formal operation in the construction process of a construction site, and generally comprises newly increased drought resistance, drainage and waterlogging power utilization and the like outside the household meter of a power department, such as a capital construction site, farmland basic construction, rural aquaculture and abnormal annual scenes.
Compared with permanent electricity, temporary electricity utilization has many adverse factors affecting electricity utilization safety:
firstly, the environment is severe, the specific conditions are different, and the complexity is high; secondly, the stacking and the placing are easy to be disordered and disordered; thirdly, the number of cross operations, the number of constructors and the number of mobile electric tools are large; fourthly, the field change is large, the climate change is large, and the personnel change is large. Because the temporary electricity utilization belongs to temporary facilities, people easily generate lucky psychology, construction and management standards are reduced due to trouble, thereby hidden accident danger is buried, the image of a construction unit is influenced, and unnecessary economic loss is caused. How to achieve reasonable power distribution of temporary electric equipment on a construction site is a technical problem to be solved urgently.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model provides a tertiary distribution device of the interim power consumption of job site solves the easy hidden problem that causes unnecessary loss of accident of the unnormalized of the interim power consumption of job site.
In order to achieve the above object, the present invention provides the following technical solutions: a three-level power distribution device for temporary power utilization in a construction site comprises a main distribution box, a switch box, a first-level leakage protector and a second-level leakage protector; the main distribution box is electrically connected with the distribution boxes; one distribution electric box is electrically connected with a plurality of switch boxes; the primary leakage protector is electrically connected with the secondary leakage protector, the primary leakage protector is electrically connected with the main distribution box, and the distribution box is electrically connected between the primary leakage protector and the secondary leakage protector; the distance between the distribution electric box and the switch box is not more than 30 m.
As a preferable scheme of the temporary power utilization three-stage power distribution device on the construction site, the switch box is used for controlling power equipment or lighting equipment, and the distance between the switch box and the power equipment is not more than 3 m.
As a preferred scheme of the temporary power utilization three-level power distribution device in a construction site, the main distribution box comprises a first main isolating switch, a first branch isolating switch and a first residual current circuit breaker; the first isolating switches are electrically connected with one first main isolating switch, and each first electric leakage circuit breaker is electrically connected with one first sub isolating switch; each distribution box is electrically connected with a first residual current circuit breaker.
As a preferable scheme of the temporary power utilization three-level power distribution device on the construction site, a first current transformer is connected between the first main isolating switch and the first branch isolating switch, and a second current transformer is connected between the first main isolating switch and a power line.
As a preferred scheme of the temporary power utilization three-level power distribution device on the construction site, the distribution box comprises a second main isolating switch, a second branch isolating switch and a second residual current circuit breaker; a plurality of second branch isolating switches are electrically connected with one second main isolating switch, and each second residual current circuit breaker is electrically connected with one second branch isolating switch; each switch box is electrically connected with a second residual current circuit breaker.
As a preferred scheme of the temporary power utilization three-level power distribution device in a construction site, the main distribution box and the switch box are made of cold-rolled steel plates or flame-retardant insulating materials; the wire inlet and outlet ports of the main distribution box and the switch box are provided with fixed wire clamps, and the wire inlet and outlet are provided with insulating sheaths and are clamped and fixed in a bundling manner.
The utility model has the advantages of as follows: the technical scheme comprises a main distribution box, a switch box, a primary leakage protector and a secondary leakage protector; the main distribution box is electrically connected with the distribution boxes; one distribution electric box is electrically connected with a plurality of switch boxes; the first-stage leakage protector is electrically connected with the second-stage leakage protector, the first-stage leakage protector is electrically connected with the main distribution box, and the distribution box is electrically connected between the first-stage leakage protector and the second-stage leakage protector; the distance between the distribution box and the switch box is not more than 30 m. The technical scheme can be applied to an auxiliary use environment to standardize the temporary electricity utilization; the power consumption requirement of cross operation is met; the potential safety hazard is reduced, the image of a construction unit is improved, and unnecessary economic loss is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.
Fig. 1 is a schematic view of a construction site temporary power utilization three-stage power distribution device provided in an embodiment of the present invention;
fig. 2 is a schematic diagram of a main distribution box circuit of a temporary power utilization three-stage distribution device in a construction site provided in an embodiment of the present invention;
fig. 3 is the embodiment of the utility model provides a job site tertiary distribution device distribution electronic box circuit schematic diagram of temporarily using electricity that provides.
In the figure, 1, a general distribution box; 2. a distribution box; 3. a switch box; 4. a first-level leakage protector; 5. a secondary earth leakage protector; 6. a power plant; 7. a first total isolating switch; 8. a first isolating switch; 9. a first residual current circuit breaker; 10. a first current transformer; 11. a second current transformer; 12. a second main isolating switch; 13. a second isolating switch; 14. a second residual current circuit breaker; 15. an illumination device.
Detailed Description
The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, 2 and 3, a construction site temporary electricity utilization three-stage power distribution device is provided, which comprises a main distribution box 1, a distribution box 2, a switch box 3, a first-stage leakage protector 4 and a second-stage leakage protector 5; the main distribution box 1 is electrically connected with a plurality of distribution boxes 2; one distribution electric box 2 is electrically connected with a plurality of switch boxes 3; the primary leakage protector 4 is electrically connected with the secondary leakage protector 5, the primary leakage protector 4 is electrically connected with the main distribution box 1, and the distribution box 2 is electrically connected between the primary leakage protector 4 and the secondary leakage protector 5; the distance between the distribution box 2 and the switch box 3 does not exceed 30 m.
In this embodiment, a plurality of distribution boxes 2 can be arranged below the main distribution box 1, and a plurality of switch boxes 3 can be arranged below the distribution boxes 2; the general distribution box 1 is arranged in an area close to a power supply, the distribution box 2 is arranged in an area with relatively concentrated electric equipment or loads, the distance between the distribution box 2 and the switch box 3 is not more than 30m, and the distance between the switch box 3 and the power equipment 6 or the lighting equipment 15 is not more than 3 m. The flat distance is not more than 3m, so that convenience in electricity utilization is guaranteed.
In this embodiment, the electrical equipment of the main distribution box 1 has functions of power isolation, normal circuit connection and disconnection, and short circuit, overload, and leakage protection. The main distribution box 1 comprises a first main isolating switch 7, a first sub isolating switch 8 and a first residual current circuit breaker 9; a plurality of first isolating switches 8 are electrically connected with one first main isolating switch 7, and each first residual current circuit breaker 9 is electrically connected with one first isolating switch 8; each distribution box 2 is electrically connected to a first residual current circuit breaker 9. A first current transformer 10 is connected between the first total isolating switch 7 and the first branch isolating switch 8, and a second current transformer 11 is connected between the first total isolating switch 7 and a power line. The rated leakage action current of the first leakage protector in the total distribution box 1 should be larger than 30mA, the rated leakage action time should be larger than 0.1s, but the product of the rated leakage action current and the rated leakage action time should not be larger than 30mA · s.
In this embodiment, the distribution box 2 includes a second main isolating switch 12, a second sub isolating switch 13 and a second residual current circuit breaker 14; a plurality of second isolating switches 13 are electrically connected with one second main isolating switch 12, and each second residual current circuit breaker 14 is electrically connected with one second isolating switch 13; each switch cabinet 3 is electrically connected to a second residual current circuit breaker 14. The rated leakage action current of the second leakage protector in the switch box 3 should not be larger than 30mA, and the rated leakage action time should not be larger than 0.1 s; the leakage protector used in damp and corrosive medium places is a splash-proof product, the rated leakage action current of the leakage protector is not more than 15mA, and the rated leakage action time is not more than 0.1 s.
In the embodiment, the isolating switch is arranged at the power supply inlet wire end, and the isolating electric appliance which has a visible breaking point when being broken and can simultaneously break all poles of the power supply is adopted. If the breaker with the visible breaking point during breaking is adopted, a disconnecting switch is not additionally arranged.
In this embodiment, the main distribution box 1 and the switch box 3 are made of cold-rolled steel plates or flame-retardant insulating materials; the thickness of the steel plate is 1.2-2.0 mm, the thickness of the steel plate of the 3 boxes of the switch box is not less than 1.2mm, the thickness of the steel plate of the 1 box of the total distribution box is not less than 1.5mm, and the surface of the box body is subjected to antiseptic treatment.
In this embodiment, the inlet and outlet ports of the main distribution box 1 and the switch box 3 are provided with fixing line cards, and the inlet and outlet lines are provided with insulating sheaths and are bundled and clamped. The incoming and outgoing lines are not in direct contact with the box body, and a rubber sheath insulated cable is adopted without redundant joints.
In this embodiment, an N-wire terminal and a PE-wire terminal are provided on the electric appliance mounting plate of the main distribution box 1. The N wire terminal board is insulated from the metal electrical appliance mounting plate; the PE wire terminal plate is required to be electrically connected with the metal electrical appliance mounting plate. N wires in the incoming and outgoing wires are connected through an N wire terminal plate; the PE lines are connected by a PE line terminal plate.
In the embodiment, the space and the channel for 2 persons to work simultaneously are formed around the main distribution box 1, the distribution box 2 and the switch box 3, and any articles which hinder the operation and the maintenance cannot be stacked; shrub and weeds cannot be generated. The main distribution box 1, the distribution box 2 and the switch box 3 are required to be installed rightly and firmly; the vertical distance between the center point of the fixed distribution box and the switch box 3 and the ground is 1.4-1.6 m; the movable distribution box and the switch box 3 should be installed on a firm support, and the vertical distance between the center point of the movable distribution box and the ground is preferably 0.8-1.6 m.
The utility model comprises a main distribution box 1, a distribution box 2, a switch box 3, a first-level leakage protector 4 and a second-level leakage protector 5; the main distribution box 1 is electrically connected with a plurality of distribution boxes 2; one distribution electric box 2 is electrically connected with a plurality of switch boxes 3; the primary leakage protector 4 is electrically connected with the secondary leakage protector 5, the primary leakage protector 4 is electrically connected with the main distribution box 1, and the distribution box 2 is electrically connected between the primary leakage protector 4 and the secondary leakage protector 5; the distance between the distributor box 2 and the switch box 3 does not exceed 30 m. The main distribution box 1 comprises a first main isolating switch 7, a first sub isolating switch 8 and a first residual current circuit breaker 9; a plurality of first isolating switches 8 are electrically connected with one first main isolating switch 7, and each first electric leakage circuit breaker 9 is electrically connected with one first isolating switch 8; each distribution box 2 is electrically connected to a first residual current circuit breaker 9. A first current transformer 10 is connected between the first total isolating switch 7 and the first sub isolating switch 8, and a second current transformer 11 is connected between the first total isolating switch 7 and the power line. The distribution box 2 comprises a second main isolating switch 12, a second sub isolating switch 13 and a second residual current circuit breaker 14; a plurality of second isolating switches 13 are electrically connected with one second main isolating switch 12, and each second residual current circuit breaker 14 is electrically connected with one second isolating switch 13; each switch cabinet 3 is electrically connected to a second residual current circuit breaker 14. The technical scheme can be applied to an auxiliary use environment to standardize the temporary electricity utilization; the power consumption requirement of cross operation is met; the potential safety hazard is reduced, the image of a construction unit is improved, and unnecessary economic loss is avoided.
Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (6)
1. A three-level power distribution device for temporary power utilization in a construction site is characterized by comprising a main distribution box (1), a distribution box (2), a switch box (3), a primary leakage protector (4) and a secondary leakage protector (5); the main distribution box (1) is electrically connected with a plurality of distribution boxes (2); one distribution electric box (2) is electrically connected with a plurality of switch boxes (3); the primary leakage protector (4) is electrically connected with the secondary leakage protector (5), the primary leakage protector (4) is electrically connected with the main distribution box (1), and the distribution box (2) is electrically connected between the primary leakage protector (4) and the secondary leakage protector (5); the distance between the distribution electric box (2) and the switch box (3) is not more than 30 m.
2. A construction site temporary electricity utilization three-stage power distribution device according to claim 1, characterized in that the switch box (3) is used for control of power equipment (6) or lighting equipment (15), and the distance between the switch box (3) and the power equipment (6) is not more than 3 m.
3. A construction site temporary electricity utilization three-stage power distribution device according to claim 1, wherein the main distribution box (1) comprises a first main isolating switch (7), a first sub isolating switch (8) and a first residual current circuit breaker (9); a plurality of first branch isolating switches (8) are electrically connected with one first main isolating switch (7), and each first leakage circuit breaker (9) is electrically connected with one first branch isolating switch (8); each distribution box (2) is electrically connected with a first residual current circuit breaker (9).
4. A temporary power three-stage distribution device for construction sites according to claim 3, wherein a first current transformer (10) is connected between the first main isolating switch (7) and the first sub isolating switch (8), and a second current transformer (11) is connected between the first main isolating switch (7) and the power line.
5. A construction site temporary electricity utilization three-stage power distribution device according to claim 1, wherein the distribution box (2) comprises a second main disconnector (12), a second sub disconnector (13) and a second residual current circuit breaker (14); a plurality of second sub isolating switches (13) are electrically connected with one second main isolating switch (12), and each second residual current circuit breaker (14) is electrically connected with one second sub isolating switch (13); each switch box (3) is electrically connected with a second residual current circuit breaker (14).
6. The construction site temporary electricity utilization three-stage power distribution device according to claim 1, wherein the main distribution box (1) and the switch box (3) are made of cold-rolled steel plates or flame-retardant insulating materials; and the wire inlet and outlet ports of the main distribution box (1) and the switch box (3) are provided with fixed wire clamps, and the wire inlet and outlet are provided with insulating sheaths and are clamped and fixed in a bundling manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120045676.8U CN214176535U (en) | 2021-01-08 | 2021-01-08 | Tertiary distribution device of job site interim power consumption |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120045676.8U CN214176535U (en) | 2021-01-08 | 2021-01-08 | Tertiary distribution device of job site interim power consumption |
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| CN214176535U true CN214176535U (en) | 2021-09-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114333220A (en) * | 2022-01-21 | 2022-04-12 | 北京天恒安科集团有限公司 | Temporary power utilization management method for construction site |
| CN114812687A (en) * | 2022-05-12 | 2022-07-29 | 保利长大工程有限公司 | Bridge deck safety construction method |
-
2021
- 2021-01-08 CN CN202120045676.8U patent/CN214176535U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114333220A (en) * | 2022-01-21 | 2022-04-12 | 北京天恒安科集团有限公司 | Temporary power utilization management method for construction site |
| CN114812687A (en) * | 2022-05-12 | 2022-07-29 | 保利长大工程有限公司 | Bridge deck safety construction method |
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