CA1137610A - Low-voltage electric switching systems - Google Patents
Low-voltage electric switching systemsInfo
- Publication number
- CA1137610A CA1137610A CA000350471A CA350471A CA1137610A CA 1137610 A CA1137610 A CA 1137610A CA 000350471 A CA000350471 A CA 000350471A CA 350471 A CA350471 A CA 350471A CA 1137610 A CA1137610 A CA 1137610A
- Authority
- CA
- Canada
- Prior art keywords
- plugs
- cabinet
- insert
- electric switching
- switching system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1438—Back panels or connecting means therefor; Terminals; Coding means to avoid wrong insertion
- H05K7/1457—Power distribution arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/32—Mounting of devices therein
- H02B1/34—Racks
- H02B1/36—Racks with withdrawable units
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Patch Boards (AREA)
Abstract
ABSTRACT
IMPROVEMENTS IN OR RELATING TO LOW-VOLTAGE
ELECTRIC SWITCHING SYSTEMS
An electric low-voltage switching system comprises a cabinet containing inserts in a number of tiers. Power is supplied by vertical busbars each connected by plugs to a horizontal distribution bar, which has plugs for each counter-plug of each insert in the tier in question. The distribution bars are secured via insulated spacers to a bearing plate of an assembly unit which is pre-assembled by wiring at the factory. The assembly unit also bears plugs which co-operate with the insert plugs in order to transmit the power output and control current from the insert to the cabinet. The plugs are connected at the factory by wiring to the terminals, to which the output lines are connected.
IMPROVEMENTS IN OR RELATING TO LOW-VOLTAGE
ELECTRIC SWITCHING SYSTEMS
An electric low-voltage switching system comprises a cabinet containing inserts in a number of tiers. Power is supplied by vertical busbars each connected by plugs to a horizontal distribution bar, which has plugs for each counter-plug of each insert in the tier in question. The distribution bars are secured via insulated spacers to a bearing plate of an assembly unit which is pre-assembled by wiring at the factory. The assembly unit also bears plugs which co-operate with the insert plugs in order to transmit the power output and control current from the insert to the cabinet. The plugs are connected at the factory by wiring to the terminals, to which the output lines are connected.
Description
~L37~
DESCRIPTION
The inYention relates to a low-voltaæe electric switching system.
Low-voltage electric switching systems are known which comprise a cabinet having a space ~or connection with terminals for the power output and the control current, adjacent a space containing inserts disposed in a number of tiers and bearing electric appliances and plugs at the back for the power input. The power output and the control current7 counter-contacts for the power output and control currents, wired to the correspondingly named terminals, are disposed behind the inserts in the cabinet, and the device also has a three-phase group of vertical busbars for the power inpu1; which are adapted to recei~e plugs.
~ . system of this kind is known from Germ~
Offenlegungsschrift 25 15 152. Its main disad~antage is th~t the terminals in the space for co~nections must ba wired in the cabinet to the plugs in the rear insertion space~ which of course is very complicated.
An ob~ect of the invention is to provide ~n economic, ad~antageous low-voltage electric switching system wherein the wiring work is simpler and more economic.
~, ,, , . -:
.,.-, .
~3~6 According to the present in~ention there is provided a low-voltage electric switching system comprising a cabinet ha~ing a space for connections with terminals for the power output and the control current, adjacent a space cont~ining inserts disposed in a number o~ tiers and bearing electric appliances and plug5 at the back ~or the power input, the power output and the control current~
counter-contacts for the power output and control currents, ~ired to the correspondingly named terminals, being disposed behind the inserts in the cabinetg and the device also comprisi~g a three~phase group of vertical busbars for the power input, adapted to receive plugs, characterised in that the counter-plugs ~or the power output and the control current, the associated terminals and the corresponding wiring per tier, which can be produced in the factory, are disposed on a pre~abricated assembly unit mounted in the cabinet.
5ince the assembly unit can be pre-assembled and wired in the factory, outside the cabinet and then only has to be secured in the cabinet, th~
assembly work is greatly reduced and also made more pleasant.
It is thus possible to assemble the cabinet simply by using plug and screw connections, since welding work9 for example, can be done at the fao-tory.
~ 4 --This ma~es assembly at the place of use more advantageous.
If a number of independent appliances or group~ thereof are in the same insert or a number o~ inserts are on the same tier theny according to a preferred embodiment o~ the in~ention, it is not necessary to provide a corresponding number o~ groups of` vertical busbars9 but the assembly unit in question can have a group of horizontal distribution bars disposed between the insert and the vertical busbars and each adapted to be connected by plugs to a busbar and to each independent appliance or each insert.
Another ad~antage of the invention is that the assembly unit can form the back wall of the insert space and the co~nection space, behind which the ~ertisal busbars oan extend7 ~hich in turn are in ~ront of the l~ads. For example, the leads ~or a number of cabinets ca~ be disposed in a back plane J the vertical busbars in a plane ~urther to the front~ and the assembly unit and horizontal distribution bars in a plane still further to the front.
Ad~antageously the distribution bars ha~e rear plugs engaging the busbars and ~ront plugs engaging the counter plugs o~ the inserts or indi~idual appliances.
The i~ention will be described no~ by way of example only with re~erence to the drawings in which:
Figure 1 shows part of a parallel projection o~ a cabinet disposed at the e~d o~ a row of cabinets;
Figure 2 is a parallel projection o~ an assembly unit on a larger scale than in Figure 1;
Figure 3 is a partial plan view of a tier o~ a Gabinet with two inserts9 on the same scale as Figure 2, and Figure 4 is a parallel projection on substantially the same scale as Figures 2 and 3, showing the co~operative action of leads, busbars and distribution bars.
In the drawing the proportions may be distorted, ~or ease o~ dra~ing9 and most parts, for ~implicity, are shown in outline only.
- Figure 1 shows a cabinet comprising a vertical space 1 for receiving inserts ad~acent a ~ertical space 2 ~or connections and separated ~herefrom by a partition 3 (shown by a broken line).
6~(~
The back wall of spaces 1 and 2 is made up of assembly units 4, one of which is shown on a larger scale in Figures 2 and 3.
Behlnd u~its 4 there is a busbar space 5 containing horizontal leads 6 and Yertical busbar~ 7, shown in Figures 3 and 4. As shown in Figure 4 each lead 6 is connected to a busbar 7 at places 70. Each lead 6 and each busbar 7 corresponds to one of three phases of the input power.
Figure 4 shows four co~plete tiers 10, the top containing two insert~ 11, the next from the top containing three inserts 12, the bottom containing one insert 13 and the next from the bottom contai.ning four inserts 14.
With reference to Figures 2~ 3 and 4 the tier with two in~erts 11 will bè discussed.
Assembly unit 4 (Figures 2 and 3) haæ a metal bearing plate 40 to which three distribution ~ars 42 Are secured ~ia spacers 41 (Figure 3 made o~ insulating material. Plate 40 also bears two multiple plugs 43 connected at the factory by wiring 44 to terminals 459 46 secured to plate 40 ln the connecting part of unit 4. Terminals 45 pro~ide a power output r~
and are connected by wiring 44 to the interiorof each plug 4~.
As Figure 3 shows, cou~ter plugs 430 of inserts 11 engage plugs 43 w~en the inserts are inserted as shown.
If there was only one insert on the tier in question there would be no need of bars 42 on unit 4, because the input power could be directly taken from bars 7 by plugs.
In the present case, however, the tier has two inserts 11, each of which must be supplied with the input power. This is supplied to them by the distribution bars 42 which are disposed on plate 40 in the manner described~
Accordingly9 bars 42 each have a rear plug 420 which is plugged to a busbar 7 in the manner shown in Figures 3 and 4 whe~ unit 4 is inserted into the appropriate tier in the cabinet. Each bar 42 ha~ a front plug 421 ~or each insert to be connected thereto~
Plugs 421 are accessible in unit 4 behind windows 47 ~Figure 2) of plate 40, so that they can engage the counter-contacts 4210 (Figure 3~ o~ the inserts 11 when they are inserted.
The windows 47 for introducing the counter contacts 4210 can have a known protection ~1.37 against electric shock hazard. ~n automatic protection device o~ thi~ kind contains at least one protective slide (omitted from the drawings for simplicity) which, when an i~sert is inserted, opens window 47 ~or counter-contact 42107 the window remains closed when the insert is removed.
Accordingly) each assembly unit 4 can be manuXactured by wiring in the ~actory in accordance with the exact requirements of the partlcular tier and can then be secured ready for use in the cabinet by plugging contacts 420 into bars 7 and by screwing flanges 48 (Fig~res 2 and 3 ) to parts 49 (Figure 3) o~ the cabinet~ It is the~ only necessary to put in the inserts9 which will immedi~tely be properly co~ected if suitably constructed. The cabinet can then be operated at the place of use, simply by connecting the output lines 50 . .
This avoids all the complicated, risky operatlons of wiring the plugs ~d terminals in known ~witching systemst which are mounted in the cabinet.
In addition to the advantage of more efficient work and lower risk of error in assembly at the ~actory~ there is the ad~antaga that, in factory assembly, production means ~37~
can be used which are unsuitable or difficult in the case of wiring in a cabinet.
', ~'.'" . ~
~, . . . :
: ' -
DESCRIPTION
The inYention relates to a low-voltaæe electric switching system.
Low-voltage electric switching systems are known which comprise a cabinet having a space ~or connection with terminals for the power output and the control current, adjacent a space containing inserts disposed in a number of tiers and bearing electric appliances and plugs at the back for the power input. The power output and the control current7 counter-contacts for the power output and control currents, wired to the correspondingly named terminals, are disposed behind the inserts in the cabinet, and the device also has a three-phase group of vertical busbars for the power inpu1; which are adapted to recei~e plugs.
~ . system of this kind is known from Germ~
Offenlegungsschrift 25 15 152. Its main disad~antage is th~t the terminals in the space for co~nections must ba wired in the cabinet to the plugs in the rear insertion space~ which of course is very complicated.
An ob~ect of the invention is to provide ~n economic, ad~antageous low-voltage electric switching system wherein the wiring work is simpler and more economic.
~, ,, , . -:
.,.-, .
~3~6 According to the present in~ention there is provided a low-voltage electric switching system comprising a cabinet ha~ing a space for connections with terminals for the power output and the control current, adjacent a space cont~ining inserts disposed in a number o~ tiers and bearing electric appliances and plug5 at the back ~or the power input, the power output and the control current~
counter-contacts for the power output and control currents, ~ired to the correspondingly named terminals, being disposed behind the inserts in the cabinetg and the device also comprisi~g a three~phase group of vertical busbars for the power input, adapted to receive plugs, characterised in that the counter-plugs ~or the power output and the control current, the associated terminals and the corresponding wiring per tier, which can be produced in the factory, are disposed on a pre~abricated assembly unit mounted in the cabinet.
5ince the assembly unit can be pre-assembled and wired in the factory, outside the cabinet and then only has to be secured in the cabinet, th~
assembly work is greatly reduced and also made more pleasant.
It is thus possible to assemble the cabinet simply by using plug and screw connections, since welding work9 for example, can be done at the fao-tory.
~ 4 --This ma~es assembly at the place of use more advantageous.
If a number of independent appliances or group~ thereof are in the same insert or a number o~ inserts are on the same tier theny according to a preferred embodiment o~ the in~ention, it is not necessary to provide a corresponding number o~ groups of` vertical busbars9 but the assembly unit in question can have a group of horizontal distribution bars disposed between the insert and the vertical busbars and each adapted to be connected by plugs to a busbar and to each independent appliance or each insert.
Another ad~antage of the invention is that the assembly unit can form the back wall of the insert space and the co~nection space, behind which the ~ertisal busbars oan extend7 ~hich in turn are in ~ront of the l~ads. For example, the leads ~or a number of cabinets ca~ be disposed in a back plane J the vertical busbars in a plane ~urther to the front~ and the assembly unit and horizontal distribution bars in a plane still further to the front.
Ad~antageously the distribution bars ha~e rear plugs engaging the busbars and ~ront plugs engaging the counter plugs o~ the inserts or indi~idual appliances.
The i~ention will be described no~ by way of example only with re~erence to the drawings in which:
Figure 1 shows part of a parallel projection o~ a cabinet disposed at the e~d o~ a row of cabinets;
Figure 2 is a parallel projection o~ an assembly unit on a larger scale than in Figure 1;
Figure 3 is a partial plan view of a tier o~ a Gabinet with two inserts9 on the same scale as Figure 2, and Figure 4 is a parallel projection on substantially the same scale as Figures 2 and 3, showing the co~operative action of leads, busbars and distribution bars.
In the drawing the proportions may be distorted, ~or ease o~ dra~ing9 and most parts, for ~implicity, are shown in outline only.
- Figure 1 shows a cabinet comprising a vertical space 1 for receiving inserts ad~acent a ~ertical space 2 ~or connections and separated ~herefrom by a partition 3 (shown by a broken line).
6~(~
The back wall of spaces 1 and 2 is made up of assembly units 4, one of which is shown on a larger scale in Figures 2 and 3.
Behlnd u~its 4 there is a busbar space 5 containing horizontal leads 6 and Yertical busbar~ 7, shown in Figures 3 and 4. As shown in Figure 4 each lead 6 is connected to a busbar 7 at places 70. Each lead 6 and each busbar 7 corresponds to one of three phases of the input power.
Figure 4 shows four co~plete tiers 10, the top containing two insert~ 11, the next from the top containing three inserts 12, the bottom containing one insert 13 and the next from the bottom contai.ning four inserts 14.
With reference to Figures 2~ 3 and 4 the tier with two in~erts 11 will bè discussed.
Assembly unit 4 (Figures 2 and 3) haæ a metal bearing plate 40 to which three distribution ~ars 42 Are secured ~ia spacers 41 (Figure 3 made o~ insulating material. Plate 40 also bears two multiple plugs 43 connected at the factory by wiring 44 to terminals 459 46 secured to plate 40 ln the connecting part of unit 4. Terminals 45 pro~ide a power output r~
and are connected by wiring 44 to the interiorof each plug 4~.
As Figure 3 shows, cou~ter plugs 430 of inserts 11 engage plugs 43 w~en the inserts are inserted as shown.
If there was only one insert on the tier in question there would be no need of bars 42 on unit 4, because the input power could be directly taken from bars 7 by plugs.
In the present case, however, the tier has two inserts 11, each of which must be supplied with the input power. This is supplied to them by the distribution bars 42 which are disposed on plate 40 in the manner described~
Accordingly9 bars 42 each have a rear plug 420 which is plugged to a busbar 7 in the manner shown in Figures 3 and 4 whe~ unit 4 is inserted into the appropriate tier in the cabinet. Each bar 42 ha~ a front plug 421 ~or each insert to be connected thereto~
Plugs 421 are accessible in unit 4 behind windows 47 ~Figure 2) of plate 40, so that they can engage the counter-contacts 4210 (Figure 3~ o~ the inserts 11 when they are inserted.
The windows 47 for introducing the counter contacts 4210 can have a known protection ~1.37 against electric shock hazard. ~n automatic protection device o~ thi~ kind contains at least one protective slide (omitted from the drawings for simplicity) which, when an i~sert is inserted, opens window 47 ~or counter-contact 42107 the window remains closed when the insert is removed.
Accordingly) each assembly unit 4 can be manuXactured by wiring in the ~actory in accordance with the exact requirements of the partlcular tier and can then be secured ready for use in the cabinet by plugging contacts 420 into bars 7 and by screwing flanges 48 (Fig~res 2 and 3 ) to parts 49 (Figure 3) o~ the cabinet~ It is the~ only necessary to put in the inserts9 which will immedi~tely be properly co~ected if suitably constructed. The cabinet can then be operated at the place of use, simply by connecting the output lines 50 . .
This avoids all the complicated, risky operatlons of wiring the plugs ~d terminals in known ~witching systemst which are mounted in the cabinet.
In addition to the advantage of more efficient work and lower risk of error in assembly at the ~actory~ there is the ad~antaga that, in factory assembly, production means ~37~
can be used which are unsuitable or difficult in the case of wiring in a cabinet.
', ~'.'" . ~
~, . . . :
: ' -
Claims (5)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A low-voltage electric switching system comprising a cabinet having a space for connections with terminals for power output and control current, adjacent a space containing inserts disposed in a number of tiers and bearing electric appliances and plugs at the back for power input, the power output and the control current, counter-contacts for the power output and control currents, wired to the correspondingly named terminals, being disposed behind the inserts in the cabinet, and the system also comprising a three-phase group of vertical busbars for the power input, adapted to receive plugs, characterized in that counter-plugs for the power output and the control current, the associated terminals and the corresponding wiring per tier, are disposed on a prefabricated assembly unit mounted in the cabinet.
2. An electric switching system according to claim 1, characterized in that at least one assembly unit is provided and also bears horizontal lead-in bars between the vertical busbars and at least one insert associated with the corresponding tier, the lead-in bars being connected by plugs each to a vertically extending busbar and to each insert on the same tier.
3. An electric switching system according to claim 2, characterized in that the assembly unit forms the back wall of the insert space and the space for connections.
4. An electric switching system according to any one of claims 1 or 2, characterized in that the distribution bars have rear plugs which each engage in a vertical busbar and front plugs co-operating with insert plugs.
5. An electric switching system according to any one of claims 1 or 2, characterized in that the cabinet is fitted together by means of screw and plug connections only.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH5523/79A CH649656A5 (en) | 1979-06-13 | 1979-06-13 | ELECTRICAL SWITCHGEAR FOR LOW VOLTAGE. |
| CH5523/79-2 | 1979-06-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1137610A true CA1137610A (en) | 1982-12-14 |
Family
ID=4295047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000350471A Expired CA1137610A (en) | 1979-06-13 | 1980-04-23 | Low-voltage electric switching systems |
Country Status (7)
| Country | Link |
|---|---|
| AT (1) | AT385152B (en) |
| BE (1) | BE882203A (en) |
| BR (1) | BR8003584A (en) |
| CA (1) | CA1137610A (en) |
| CH (1) | CH649656A5 (en) |
| DE (1) | DE2948312A1 (en) |
| GB (1) | GB2052877B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3243063A1 (en) * | 1982-11-22 | 1984-05-24 | BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau | CABINET OR SCAFFOLDING FOR INSERTING INSERT ELECTRICAL SYSTEMS |
| DE4210657C2 (en) * | 1992-03-31 | 2001-06-07 | Moeller Gmbh | Plug-in low-voltage switchgear for the supply or distribution of electrical energy |
| DE102012220951B4 (en) * | 2012-11-16 | 2017-11-30 | Trumpf Werkzeugmaschinen Gmbh + Co. Kg | Mounting system for an electrical control cabinet, as well as control cabinet |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1518815A (en) * | 1967-02-06 | 1968-03-29 | Telemecanique Electrique | Electrical panel with withdrawable drawers |
| US3633075A (en) * | 1970-02-18 | 1972-01-04 | Benjamin K Hawkins | Cabinet housing motor controls mounted on plug-in modules |
| FR2301943A1 (en) * | 1975-02-20 | 1976-09-17 | Alsthom Cgee | LOW VOLTAGE DISTRIBUTION AND DISTRIBUTION ENCLOSED EQUIPMENT CELL |
| DE2515152B2 (en) * | 1975-04-08 | 1980-04-10 | Brown, Boveri & Cie Ag, 6800 Mannheim | Electrical switchgear for low voltage |
-
1979
- 1979-06-13 CH CH5523/79A patent/CH649656A5/en not_active IP Right Cessation
- 1979-11-30 DE DE19792948312 patent/DE2948312A1/en active Granted
-
1980
- 1980-03-13 BE BE0/199778A patent/BE882203A/en not_active IP Right Cessation
- 1980-03-17 GB GB8009000A patent/GB2052877B/en not_active Expired
- 1980-04-22 AT AT0214180A patent/AT385152B/en not_active IP Right Cessation
- 1980-04-23 CA CA000350471A patent/CA1137610A/en not_active Expired
- 1980-06-10 BR BR8003584A patent/BR8003584A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CH649656A5 (en) | 1985-05-31 |
| ATA214180A (en) | 1987-07-15 |
| DE2948312C2 (en) | 1989-05-11 |
| BE882203A (en) | 1980-07-01 |
| GB2052877A (en) | 1981-01-28 |
| AT385152B (en) | 1988-02-25 |
| GB2052877B (en) | 1983-03-02 |
| DE2948312A1 (en) | 1981-01-08 |
| BR8003584A (en) | 1981-01-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |