CN207896616U - Bus duct unit and bus duct are grounded mains system - Google Patents
Bus duct unit and bus duct are grounded mains system Download PDFInfo
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- CN207896616U CN207896616U CN201820234464.2U CN201820234464U CN207896616U CN 207896616 U CN207896616 U CN 207896616U CN 201820234464 U CN201820234464 U CN 201820234464U CN 207896616 U CN207896616 U CN 207896616U
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- bus duct
- side plate
- electrical grounding
- conductors
- ground connection
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Abstract
The utility model is related to a kind of bus duct units and bus duct to be grounded mains system, including metal shell and the conductive bus bar being arranged in metal shell, conductive bus bar has multiple spaced busbar conductors, and there are two the main cover plate being oppositely arranged up and down and two or so the main side plates being oppositely arranged for metal shell tool；Longitudinal both ends of main side plate have the attached side plate of metal, and the attached side plate is equipped with multiple electrical grounding plates for being threaded hole.Wherein, it is connected by attachment device by forms electric line between multiple bus duct units；The electric line has multiple spaced electrical grounding points, has a plurality of ground connection main line at each electrical grounding point, and the cross-sectional area sum of a plurality of ground connection main line at each electrical grounding point is more than or equal to the cross-sectional area of PE conductors；The ground connection main line is fixed on by the screw being connected with threaded hole on electrical grounding plate.The bus duct and its ground connection mains system of the utility model have the advantages that safe.
Description
Technical field
The utility model is related to bus duct fields, more particularly, to the ground connection mains system of bus duct.
Background technology
The annual electrical fire in China had been more than 100,000 in recent years, and the main cause of electrical fire is power and distribution supply cable
Aging, generates single-phase Leaked Current of Line to Ground, leakage current can not rapid expansion to driving higher level that electrical action is protected to cut off the power, leak electricity
Position generate electric discharge, sparking and cause electrical fire thing.
In the power supply-distribution system of China's architectural electricity, three-phase five-wire cable or bus duct, Three-phase five-wire are used substantially
Triple line, the N neutral conductors and PE ground wires in cable are all dielectrically separated from cable testing bridge metal shell；Three-phase in bus duct
Conductor, N neutral conductors and PE earth conductors are similarly substantially isolated with the metal shell of bus duct.In the prior art, big portion
Point cable testing bridge metal shell and bus duct metal shell are not connected to substantially with PE lines, cause it is single-phase to metal shell when it is disconnected
Road device cannot achieve quick acting.
In the existing bus duct in part, seem to connect with metal shell on PE ground conductor surfaces, and by metal outside
Shell is grounded, but be there are in fact and connected unreliable or inadequate inflow-rate of water turbine problem；Some wholes are connected to, but ground path is long
It is all returned to general earthed system, resistive impedance is big, can not drive higher level's breaker actuation and cut off the power, can cause electrical fire
And personnel touch metal shell human casualty accident.
The fault current of the metal shell of the current architectural electricity power supply-distribution system in China, bus duct and cable testing bridge is protected
Shield, mainly in the ground connection band iron of 4X40mm, ground connection band iron is spaced a predetermined distance to be connect with metal shell, then is spaced a predetermined distance
It is connect with grounded screen.These safeguard measure maximums also only have the conveyance capacity of 4X40mm band irons, larger current protection electrical
It can not drive.
Therefore, it is necessary to be improved to existing bus duct and its ground connection mains system, to further increase its safety
Energy.
Invention content
First purpose of the utility model is to provide a kind of bus duct unit of high security.
Second purpose of the utility model is to provide a kind of bus duct ground connection mains system of high security.
In order to realize that the first above-mentioned purpose, the utility model provide a kind of bus duct unit comprising metal shell
And the conductive bus bar being arranged in metal shell, conductive bus bar have multiple spaced busbar conductors, metal shell tool
There are two the main cover plate being oppositely arranged up and down and two or so the main side plates being oppositely arranged；Longitudinal both ends of main side plate are welded with gold
Belong to attached side plate, and the attached side plate is equipped with multiple electrical grounding plates for being threaded hole, the minimum of electrical grounding plate is transversal
Area is not less than the smallest cross-section area of PE conductors..
By above technical scheme as it can be seen that by being welded to connect between the attached side plate of metal and main side plate, there is connection reliability
High advantage；Set electrical grounding plate connects for realizing the equipotential between bus duct and ground connection main line on attached side plate
It connects, when generating single-phase Leaked Current of Line to Ground, the electric current in metal shell can be quick by the ground connection main line being connected with equal unitary grounds plate
Conduction is to greatly so that bus duct unit has high security.
A kind of specific implementation mode according to the present utility model, electrical grounding plate are formed as one with attached side plate, with into
One step improves the Earthing Reliability of metal shell.
Preferably, electrical grounding plate is arranged in parallel with attached side plate, to reduce the lateral dimension of bus duct unit.
For the ease of the assembling of bus duct and ground connection main line, electrical grounding plate preferably prolongs on the direction far from attached side plate
Stretch and be located at the outside of main side plate.
In a kind of specific implementation mode of the utility model, busbar conductor is led including three phase conductors, N-conductor and PE
Body, the PE conductors are electrically connected with attached side plate；Preferably, elasticity abuts and is formed and be electrically connected between PE conductors and attached side plate.
In another specific implementation mode of the utility model, busbar conductor includes three phase conductors and N-conductor, metal-back
PE conductor of the body as bus duct.Thus, it is possible to save one of nine parts of copper resource；Wherein, metal shell does PE conductor cross sectional areas
When insufficient, in metal shell can additional metal conductor, copper, the conductive materials such as aluminium, alloy.
In order to realize that the second above-mentioned purpose, the second aspect of the utility model provide a kind of bus duct ground connection main line system
System comprising a plurality of any one above-mentioned bus duct unit is connected by shape by attachment device between adjacent bus duct unit
At electric line；The electric line has multiple spaced electrical grounding points, has at each electrical grounding point
There is a plurality of ground connection main line, and the cross-sectional area sum of a plurality of ground connection main line at each electrical grounding point is led more than or equal to PE
The cross-sectional area of body；Ground connection main line is fixed on by the screw being connected with threaded hole on electrical grounding plate, and and equipotential
Earth plate is conductively connected.
In above-mentioned technical proposal, electric line preferably has total earth point close to electric room, that is, so that bus duct beginning
The attached side plate of section unit is connect with total equipotential end.
Preferably, ground connection main line is the copper conductor that cross-sectional area is at least 6 square millimeters.
Preferably, it is both provided with electrical grounding point between the connected bus duct unit of any two, to improve ground connection
Reliability.
In the bus duct ground connection mains system of the utility model, there are electric line multiple intervals (isopotential point is arranged
The distance between preferably more than 50 meters) electrical grounding point, and a plurality of ground connection main line at each electrical grounding point
Cross-sectional area sum be more than or equal to PE conductors cross-sectional area so that when generating single-phase Leaked Current of Line to Ground, the electricity in metal shell
Stream can be quickly conducted by the ground connection main line being connected with equal unitary grounds plate to greatly, and even if is deposited at part electrical grounding point
Electric current in earth fault, metal shell can also quickly be conducted by other earth points to greatly, have grounding safety can
By the advantages of, significantly improve the safety of bus duct.
In addition, the bus duct ground connection mains system of the utility model may not need the ground connection band iron using 4X40mm, can save
About 8% or so project cost.
In order to more clearly illustrate the purpose of this utility model, technical solution and advantage, With reference to embodiment
The utility model is described in further detail.
Description of the drawings
Fig. 1 is the structural exploded view of the utility model bus duct electric line embodiment 1；
Fig. 2 is the structural exploded view of the median generatrix slot unit of bus duct electric line shown in Fig. 1；
Fig. 3 is the schematic diagram of the utility model bus duct ground connection arterial grid embodiment 1；
Fig. 4 is the schematic diagram of the utility model bus duct ground connection arterial grid embodiment 2；
Fig. 5 is the schematic diagram of the utility model bus duct ground connection arterial grid embodiment 3；
Fig. 6 is the vertical view of another embodiment of the utility model bus duct unit.
Specific implementation mode
Embodiment 1
Referring to Fig. 1 and 2, the bus duct transmission and distribution line of the present embodiment route multiple connections of bus duct unit 10 and is composed,
It is connected by attachment device 20 between adjacent cells 10.Wherein, bus duct unit 10 includes the gold being oppositely arranged by about two
The metal shell that owner's cover board 11 and two or so the metal main side plates 12 being oppositely arranged are spliced, longitudinal the two of main cover plate 11
End is provided with waterproof end 111；Longitudinal both ends of main side plate 12 all have attached side plate 121, between attached side plate 121 and main side plate 12
It is welded to connect.
Longitudinal both ends of main side plate 12 are welded with the attached side plate 121 of metal, and attached side plate 121 is equipped with multiple carry and connects
The electrical grounding plate 122 in hole, multiple screws 123 are threadedly coupled with the connecting hole being formed on electrical grounding plate 122 respectively,
It is fixed on electrical grounding plate 122 so that main line (being not shown in Fig. 1 and 2) will be grounded.Electrical grounding plate 122 and attached side plate
121 are formed as one, and the smallest cross-section area of electrical grounding plate 122 is not less than the smallest cross-section area of PE conductors.Meanwhile etc.
Current potential earth plate 122 is arranged in parallel with attached side plate 121, and is upwardly extended in the side far from attached side plate 121 and be located at main side plate 12
Outside.
PE conductor of the metal shell as bus duct, and it is female that the conduction being isolated with metal shell is provided in metal shell
Row 100, conductive bus bar 100 include multiple busbar conductors.Specifically, conductive bus bar includes three phase conductors and integrated N-conductor, more
The both ends of a busbar conductor are between longitudinally projecting to the attached side plate of the enclosure interior 121, the attached side plate 121 between adjacent cells 10
Electrical connection and mechanical connection are realized by attachment device 20 with multiple busbar conductors.
Fig. 3 is the schematic diagram of the utility model bus duct ground connection arterial grid embodiment 1.As shown in figure 3, the present embodiment has
A plurality of parallel arrangement of electric line, wherein electric line 2 are main bus-bar.Every electric line all has close to electric room
Total earth point 1 (the attached side plate of bus duct beginning section unit is connect with total equipotential end) and multiple spaced multiple groundings
3 (such as being connect with the metal shell of crane span structure) of point, total earth point 1 and multiple spaced multiple grounding points 3 constitute this implementation
Multiple electrical grounding points of example, equipotential earth point setting is between arbitrary two adjacent bus duct units.Per first-class
At current potential earth point have a plurality of ground connection main line, and the cross-sectional area of a plurality of ground connection main line at each electrical grounding point it
With the cross-sectional area more than or equal to PE conductors；The ground connection main line is fixed on equipotential by the screw 123 being connected with threaded hole
On earth plate 122 (as shown in Figure 2).In the present embodiment, each equal electricity of other a plurality of electric lines in addition to main bus-bar
Position earth point is first connected to the corresponding electrical grounding point of main bus-bar, is then grounded by the electrical grounding of main bus-bar point.
Fig. 4 is the schematic diagram of the utility model bus duct ground connection arterial grid embodiment 2.As shown in figure 4, the present embodiment only has
There is an electric line 2.Electric line 2 has total earth point 1 and multiple spaced multiple groundings close to electric room
Point 3, total earth point 1 and multiple spaced multiple grounding points 3 constitute the electrical grounding point of the present embodiment.
Fig. 5 is the schematic diagram of the utility model bus duct ground connection arterial grid embodiment 3.As shown in figure 3, the present embodiment has
A plurality of parallel arrangement of electric line 2.An electric line 2 (maximum main bus-bar) therein is provided at electric room
Total earth point 1；There is multiple spaced multiple grounding points 3, total earth point 1 and multiple intervals on each electric line 2
The multiple grounding point 3 of setting constitutes the electrical grounding point of the present embodiment.Wherein, it is adjacent to be provided only on part for multiple grounding point 3
Between bus duct unit, and multiple grounding point 3 can be directly grounded by being grounded main line, or by being connect with ground connection main line
Joist steel upright is grounded.In addition, the multiple grounding point of a certain transmission and distribution line road can pass through conducting wire and other electric lines
Corresponding multiple grounding point be connected, and by the ground connection main line of the multiple grounding point be grounded.
In each embodiment of the utility model, ground connection main line is at least 6 square millimeters of copper conductor using cross-sectional area.
Embodiment 2
Fig. 6 is the vertical view of 2 median generatrix slot unit of the utility model embodiment.As shown in Fig. 2, embodiment 2 and embodiment 1
Median generatrix slot unit differs only in：Conductive bus bar 100 further includes PE conductors 101, the longitudinal end of PE conductors 101 and attached side
Elasticity abuts between plate 121, to form reliable electrical connection between.
Although depicting the utility model above by preferred embodiment, but it is to be understood that, ordinary skill
Personnel are all according to being improved on an equal basis made by the utility model in the invention scope for not departing from the utility model, should be this practicality
Novel protection domain is covered.
Claims (10)
1. a kind of bus duct unit, including metal shell and the conductive bus bar that is arranged in the metal shell, the conduction
Busbar has multiple spaced busbar conductors, and there are two the main cover plate being oppositely arranged up and down and two for the metal shell tool
The main side plate that left and right is oppositely arranged；It is characterized in that：Longitudinal both ends of the main side plate are welded or to be integrally formed with metal attached
Side plate, and the attached side plate is equipped with multiple electrical grounding plates with connecting hole, the minimum of the electrical grounding plate is horizontal
Sectional area is not less than the smallest cross-section area of PE conductors.
2. bus duct unit as described in claim 1, it is characterised in that：The electrical grounding plate is formed with the attached side plate
It is integrated.
3. bus duct unit as described in claim 1, it is characterised in that：The electrical grounding plate is parallel with the attached side plate
Setting.
4. bus duct unit as described in claim 1, it is characterised in that：The electrical grounding plate is far from the attached side plate
Side upwardly extend and positioned at the main side plate outside.
5. bus duct unit as described in claim 1, it is characterised in that：The busbar conductor includes three phase conductors, N-conductors
With the PE conductors, the PE conductors are electrically connected with the attached side plate.
6. bus duct unit as claimed in claim 5, it is characterised in that：Elasticity is supported between the PE conductors and the attached side plate
It connects and forms the electrical connection.
7. bus duct unit as described in claim 1, it is characterised in that：The busbar conductor includes that three phase conductors and N are led
Body, the metal shell is as the PE conductors.
8. a kind of bus duct is grounded mains system, it is characterised in that：Including a plurality of such as mother described in any one of claim 1 to 5
Wire casing unit is connected by attachment device by forms electric line between adjacent bus duct unit；The electric line tool
There are multiple spaced electrical grounding points, there is a plurality of ground connection main line, and each at each electrical grounding point
The cross-sectional area sum of a plurality of ground connection main line at the electrical grounding point is more than or equal to the cross-sectional area of PE conductors；Institute
State ground connection main line be fixed on the electrical grounding plate by the screw being connected with the connecting hole, and with the equipotential
Earth plate is conductively connected.
9. bus duct as claimed in claim 8 is grounded mains system, it is characterised in that：The ground connection main line be cross-sectional area extremely
It is 6 square millimeters of copper conductor less.
10. bus duct as claimed in claim 8 is grounded mains system, it is characterised in that：The connected bus duct list of any two
The electrical grounding point is both provided between member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820234464.2U CN207896616U (en) | 2018-02-09 | 2018-02-09 | Bus duct unit and bus duct are grounded mains system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820234464.2U CN207896616U (en) | 2018-02-09 | 2018-02-09 | Bus duct unit and bus duct are grounded mains system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207896616U true CN207896616U (en) | 2018-09-21 |
Family
ID=63542822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820234464.2U Active CN207896616U (en) | 2018-02-09 | 2018-02-09 | Bus duct unit and bus duct are grounded mains system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207896616U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112332344A (en) * | 2020-11-26 | 2021-02-05 | 武汉光谷智慧能源有限公司 | Bus duct unit and bus duct system |
| CN113097952A (en) * | 2021-04-29 | 2021-07-09 | 珠海光乐电力母线槽有限公司 | Copper-aluminum alloy intelligent bus trunk line system |
-
2018
- 2018-02-09 CN CN201820234464.2U patent/CN207896616U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112332344A (en) * | 2020-11-26 | 2021-02-05 | 武汉光谷智慧能源有限公司 | Bus duct unit and bus duct system |
| CN112332344B (en) * | 2020-11-26 | 2022-04-01 | 武汉光谷智慧能源有限公司 | Bus duct unit and bus duct system |
| CN113097952A (en) * | 2021-04-29 | 2021-07-09 | 珠海光乐电力母线槽有限公司 | Copper-aluminum alloy intelligent bus trunk line system |
| CN113097952B (en) * | 2021-04-29 | 2022-06-14 | 珠海光乐电力母线槽有限公司 | Copper-aluminum alloy intelligent bus trunk line system |
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