CA2813004C - Busbar trunking unit and busbar trunking system comprising a busbar trunking unit - Google Patents
Busbar trunking unit and busbar trunking system comprising a busbar trunking unit Download PDFInfo
- Publication number
- CA2813004C CA2813004C CA2813004A CA2813004A CA2813004C CA 2813004 C CA2813004 C CA 2813004C CA 2813004 A CA2813004 A CA 2813004A CA 2813004 A CA2813004 A CA 2813004A CA 2813004 C CA2813004 C CA 2813004C
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- Canada
- Prior art keywords
- busbar
- longitudinal direction
- another
- sections
- housing
- 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 - Fee Related
Links
- 239000004020 conductor Substances 0.000 claims abstract description 19
- 238000009434 installation Methods 0.000 description 6
- 229910001335 Galvanized steel Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000008397 galvanized steel Substances 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 238000009500 colour coating Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000009420 retrofitting Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
- H02G5/06—Totally-enclosed installations, e.g. in metal casings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
- H02G5/002—Joints between bus-bars for compensating thermal expansion
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
- H02G5/007—Butt joining of bus-bars by means of a common bolt, e.g. splice joint
-
- 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
- H02B1/16—Earthing arrangements
Abstract
The invention relates to a busbar trunking unit (102) for a busbar trunking system (101) having busbars (104) which are elongated in a longitudinal direction (103), are arranged flat next to one another in the busbar housing (105) and are encased by said busbar housing (105), each busbar (104) consisting of two separate partial pieces (104a, 104b) which are designed as rigid profiled elements which are connected to each other in series in the longitudinal direction (103) in an electrically conductive manner, wherein the partial pieces (104a, 104b) are displaceable independently from each other in the busbar housing (105) in the longitudinal direction (103) and can be held fixedly in place perpendicular to the longitudinal direction. According to the invention, the busbar housing (105) consists of two partial sheaths (105a, 105b) which can be displaced telescopically one inside the other for modifying the length of the busbar housing (105). In order to configure the busbar trunking unit in a more cost-effective manner, it is provided that the two partial sheaths (105a, 105b) are made each of an electrically conductive material and are electrically connected to each other such that they form a current path that can be used as a PE conductor.
Description
Description Busbar trunking unit and busbar trunking system comprising a busbar trunking unit When constructing a daisychained busbar configuration of a busbar trunking system by coupling together preassembled busbar trunking units by their front faces it is necessary to compensate for gaps formed in the busbar daisychain due to assembly tolerances occurring at the installation site. In the prior art such gaps were compensated for by adapter pieces that had to be measured precisely. For this purpose the gap was measured and the adapter piece was individually manufactured and subsequently installed. This approach necessitated a high investment in terms of both time and costs.
The invention relates to a busbar trunking unit for a busbar trunking system comprising busbars which are elongated in a longitudinal direction, are encased by a busbar housing, and are arranged flat next to one another in the busbar housing, wherein each of the busbars consists of two separate sections embodied as rigid profiled elements and connected to one another in series in an electrically conductive manner in the longitudinal direction, wherein the sections can be displaced independently of one another in the busbar housing in the longitudinal direction and are held fixedly in place transversely to the longitudinal direction.
The invention further relates to a busbar trunking system comprising at least one busbar trunking unit of said type as
The invention relates to a busbar trunking unit for a busbar trunking system comprising busbars which are elongated in a longitudinal direction, are encased by a busbar housing, and are arranged flat next to one another in the busbar housing, wherein each of the busbars consists of two separate sections embodied as rigid profiled elements and connected to one another in series in an electrically conductive manner in the longitudinal direction, wherein the sections can be displaced independently of one another in the busbar housing in the longitudinal direction and are held fixedly in place transversely to the longitudinal direction.
The invention further relates to a busbar trunking system comprising at least one busbar trunking unit of said type as
2 part of a daisychained busbar configuration formed from busbar trunking units coupled to one another by their front face.
A generic busbar trunking unit known from practice is shown in Figures 1 and 2. With said known busbar trunking unit in the form of an expansion unit, the two sections of each of the busbars are in each case connected to one another in an electrically conductive manner by means of a flexible conductor strip, the two ends of the conductor strip being welded to the front faces of the two sections facing toward one another.
A further generic busbar trunking unit is known from the publication EP 0 933 855 Al. In said busbar trunking unit the busbar housing consists of two partial sheaths which are slidable into one another in a telescope-like manner in order to change the length of the busbar housing.
Starting from a busbar having the features of the preamble of claim 1 (EP 0 933 855 Al), the object underlying the invention is to design the busbar trunking unit in a more cost-effective manner.
This object is achieved by means of a generic busbar trunking unit in which the busbar housing consists of two partial sheaths which are slidable into one another in a telescope-like manner in order to change the length of the busbar housing and in which the two partial sheaths are each made of a current-conducting material and are connected to one another in an electrically conductive manner in such a way that they form a current path which can be used as a PE conductor.
A generic busbar trunking unit known from practice is shown in Figures 1 and 2. With said known busbar trunking unit in the form of an expansion unit, the two sections of each of the busbars are in each case connected to one another in an electrically conductive manner by means of a flexible conductor strip, the two ends of the conductor strip being welded to the front faces of the two sections facing toward one another.
A further generic busbar trunking unit is known from the publication EP 0 933 855 Al. In said busbar trunking unit the busbar housing consists of two partial sheaths which are slidable into one another in a telescope-like manner in order to change the length of the busbar housing.
Starting from a busbar having the features of the preamble of claim 1 (EP 0 933 855 Al), the object underlying the invention is to design the busbar trunking unit in a more cost-effective manner.
This object is achieved by means of a generic busbar trunking unit in which the busbar housing consists of two partial sheaths which are slidable into one another in a telescope-like manner in order to change the length of the busbar housing and in which the two partial sheaths are each made of a current-conducting material and are connected to one another in an electrically conductive manner in such a way that they form a current path which can be used as a PE conductor.
3 In this arrangement, in order to establish their electrically conductive connection, the two partial sheaths preferably form mutually associated electrical contact surfaces which are held under contact force directly against one another in an electrically conductive manner.
Preferably a first of the two sections of each of the busbars is displaceable in the longitudinal direction and is held fixedly in place transversely to the longitudinal direction in a first of the two partial sheaths of the busbar trunking unit and the second of the sections of each of the busbars is displaceable in the longitudinal direction and is held fixedly in place transversely to the longitudinal direction in the second of the two partial sheaths of the busbar trunking unit, wherein the two sections on the one hand and the two partial sheaths on the other hand are in each case captively connected to one another.
First fixing means are preferably provided for mutual fixing of the two partial sheaths of the busbar housing, which fixing means engage through slotted holes of the first of the two partial sheaths and associated fixing holes of the second of the two partial sheaths.
A further preferred embodiment of the novel busbar trunking unit provides that in order to establish the current-conducting connection the sections overlap at their front faces facing toward one another, wherein a second fixing means can be provided for mutual fixing of the sections, which fixing means engages through mutually associated slotted holes of the busbars in the overlap zone, as is already known from
Preferably a first of the two sections of each of the busbars is displaceable in the longitudinal direction and is held fixedly in place transversely to the longitudinal direction in a first of the two partial sheaths of the busbar trunking unit and the second of the sections of each of the busbars is displaceable in the longitudinal direction and is held fixedly in place transversely to the longitudinal direction in the second of the two partial sheaths of the busbar trunking unit, wherein the two sections on the one hand and the two partial sheaths on the other hand are in each case captively connected to one another.
First fixing means are preferably provided for mutual fixing of the two partial sheaths of the busbar housing, which fixing means engage through slotted holes of the first of the two partial sheaths and associated fixing holes of the second of the two partial sheaths.
A further preferred embodiment of the novel busbar trunking unit provides that in order to establish the current-conducting connection the sections overlap at their front faces facing toward one another, wherein a second fixing means can be provided for mutual fixing of the sections, which fixing means engages through mutually associated slotted holes of the busbars in the overlap zone, as is already known from
4 busbars which serve for driving rail vehicles (US 5,224,575 A, DE 196 09 006 C2).
In order to facilitate the assembly and installation of the busbar trunking unit and the adjustment of the length of the busbar housing it is furthermore advantageously provided to furnish each of the two partial sheaths with handles.
According to one aspect of the present invention, there is provided a busbar trunking unit for a busbar trunking system comprising busbars which are elongated in a longitudinal direction, are encased by a busbar housing, and are arranged flat next to one another in the busbar housing, wherein each of the busbars consists of two separate sections embodied as rigid profiled elements and connected to one another in series in an electrically conductive manner in the longitudinal direction, wherein the sections can be displaced independently of one another in the busbar housing in the longitudinal direction and are held fixedly in place transversely to the longitudinal direction, and wherein the busbar housing consists of two partial sheaths which are slidable into one another in a telescope-like manner in order to change the length of the busbar housing, wherein the length of the busbars formed from the sections and a length of the busbar housing formed from the partial sheaths are freely adjustable independently of one another, wherein the two partial sheaths are each made of a current conducting material and in order to establish their electrically conductive connection the two partial sheaths form mutually associated electrical contact surfaces which are held under contact force directly against one another in an 4a electrically conductive manner and form a current path of the busbar trunking unit.
The invention is described hereinbelow with reference to the following figures, in which:
Figures 1 and 2 show a busbar trunking system known from practice comprising a busbar trunking unit in the form of an expansion unit, Figure 3 shows a busbar trunking system comprising a busbar trunking unit according to the invention in a perspective view with busbar and busbar housing, Figures 4, 11 and 12 show three different sectional views of the busbar trunking unit according to Figure 3, Figures 5 to 9 show individual parts of the busbar housing, Figure 10 shows two sections of one of the busbars with connecting means in an exploded view, and Figures 13 to 15 show the busbar trunking unit partially in an exploded view, with the busbars and the busbar housing being independently adjusted to different lengths in each case.
Figures 1 and 2 show a busbar trunking system 1 known from practice comprising a busbar trunking unit 2 in the form of an expansion unit which is part of a busbar daisychain of the busbar trunking system. In a longitudinal direction 3, the expansion unit 2 has elongated busbars 4 which are encased by a busbar housing 5 and are arranged flat next to one another in the busbar housing 5. With said known busbar trunking unit, each of the busbars 4 consists of two separate sections 4a, 4b which are embodied as rigid profiled elements and are connected to one another in series in an electrically conductive manner in the longitudinal direction 3, wherein the sections 4a, 4b can be displaced independently of one another in the busbar housing 5 in the longitudinal direction and are held fixedly in place transversely to the longitudinal direction 3. Supporting and retaining devices 7, as already known from the publication EP 0 530 521 Bl, serve for that purpose.
The two sections 4a, 4b of each of the busbars 4 are in each case connected to one another in an electrically conductive manner by means of a flexible conductor strip 6, the two ends of the conductor strip being welded to the front faces of the two sections 4a, 4b facing toward one another.
Figures 3 and 4 show a busbar trunking system 101 according to the invention comprising a busbar trunking unit 102 according to the invention. The busbar trunking unit 102 according to the invention also has busbars 104 which are elongated in a longitudinal direction 103, form a conductor rail pack and are arranged, enclosed by a busbar housing 105, flat next to one another in the busbar housing 105. Furthermore, in this case too, each of the busbars 104 consists of two separate sections 104a, 104b which are embodied as rigid profiled elements and are connected to one another in series in an electrically conductive manner in the longitudinal direction 103. Here too, the sections 104a, 104b can be displaced independently of one another in the busbar housing 105 in the longitudinal direction 103 and are held fixedly in place transversely to the longitudinal direction 103 by means of supporting and retaining devices 107 in the manner known from the publication EP 0 530 521 21. The two sections are - as will be shown hereinafter - connected to one another in a captive but releasable manner.
The busbar housing 105 consists of two partial sheaths 105a and 105b, which engage in one another in a telescope-like manner and which are slidable, telescope-like, into one another continuously to different depths in order to change the length of the busbar housing 105.
In this case a first 105a of the two partial sheaths is formed by nine housing parts 111 to 119. The second partial sheath is formed by five housing parts 121 to 125. Several of the housing parts in each case are common parts which are shown again individually in Figures 5 to 9.
Thus, the housing parts designated by 111-and 121 in Figures 3 and 4 are embodied according to Figure 5 as first covering profiled elements 130 bent into a U shape, each forming an end-side flange. Each of said end-side flanges serves to connect to a further busbar trunking unit of the busbar daisychain and for this purpose has first fixing holes 131.
According to Figure 6, the housing parts designated by 112, 113, 122 and 123 in Figures 3 and 4 are first lateral profiled elements 132 bent into a W shape. These have second fixing holes 133 for connecting to a further busbar trunking unit of the busbar daisychain, as well as third 134 and fourth 135 fixing holes.
According to Figure 7, the housing parts designated by 114, 115, 124 and 125 in Figures 3 and 4 are flat ventilation grilles 136 having fifth fixing holes 137. In this case the fourth 135 and fifth 137 fixing holes serve for connecting the first lateral profiled elements 132 to the ventilation grilles 136.
The housing parts designated by 116 and 117 and 118 and 119 in Figures 3 and 4 form a further flange overlapping and connecting the ventilation grilles and the first lateral profiled elements and fulfilling the function of guiding the second partial sheath 105b in the first partial sheath 105a in a telescope-like manner. For this purpose the housing parts 116 and 117, which according to Figure 8 form W-shaped second lateral profiled elements 138, and the housing parts 118 and 119, which according to Figure 9 form U-shaped second covering profiled elements 141, each have slotted holes 140 and 143 respectively on opposite sides, in which holes, according to Figure 3, first fixing means 150 in the form of fixing screws are guided. The two partial sheaths 105a, 105b are captively connected to one another by means of the fixing screws, because said fixing means engage through the slotted holes 140, 143 of the first of the two partial sheaths 105a and the associated fixing holes 134 of the second 105b of the two partial sheaths.
The two partial sheaths 105a, 105b are each made of a current-conducting material - in particular galvanized steel or aluminum - and are connected to one another in an electrically conductive manner in such a way that they form a current path which can be used as a PE conductor. In order to establish the electrically conductive connection the two partial sheaths 105a, 105b in this case form contact pairs composed of mutually associated electrical contact surfaces which are held under contact force directly against one another in an electrically conductive manner.
In this arrangement said contact surfaces are embodied on the U-shaped first covering profiled elements 130, the W-shaped first lateral profiled elements 132, the W-shaped second lateral profiled elements 138 and the U-shaped second covering profiled elements 141 in the manner shown in Figures 5 and 6 and 8 and 9.
Thus, according to Figure 5, the inward-facing surfaces of the first covering profiled elements 130 provided with the fixing holes 131 form the first 130a and 130b of the contact surfaces, and, according to Figure 9, the inward-facing surfaces of the second covering profiled elements 141 provided with the fixing holes 142 and the slotted holes 143 form the second 141a and 141b of the contact surfaces. For this purpose the said surfaces forming the first and second of the contact surfaces are kept metallically bare, while the remaining surfaces of the covering profiled elements 130 and 141 formed from current-conducting material - in particular made of galvanized steel or aluminum - are additionally provided with a color coating.
Furthermore, according to Figure 6, sections of the outward-facing surfaces of the first lateral profiled elements 132 provided with the fixing holes 133 and 134 form the third 132a to 132d of the contact surfaces. In addition, according to Figure 8, the sides of the second lateral profiled elements 138 provided with the fixing holes 139 and the slotted holes 140 form the fourth 138a to 138d of the contact surfaces with their inward- and outward-facing surfaces. In this case too the said surfaces forming the third and fourth of the contact surfaces are kept metallically bare, while the remaining surfaces of the lateral profiled elements 132 and 138 formed from current-conducting material - in particular made of galvanized steel or aluminum - are additionally provided with a color coating.
Thus, the housing parts 122 and 116 and 123 and 117 are metallically bare in overlapping areas and are connected in an electrically conductive manner via contact pairs accordingly formed from the contact surfaces 132a, 132b, 138a and 138b.
In addition, however, the housing parts 116, 118; 116, 119;
117, 118; 117, 119 are also metallically bare in their overlapping area and are connected in an electrically conductive manner via contact pairs accordingly formed from the contact surfaces 138c, 138d, 141a and 141b.
Furthermore, the housing parts 112 and 116 and 113 and 117 are metallically bare in overlapping areas and are connected in an electrically conductive manner via contact pairs accordingly formed from the contact surfaces 132a, 132b, 138a and 138b.
The fixing means (in this case screwed connections) designated by 150 serve to press the mutually associated surfaces of the bare contact surfaces 130a, 130b, 132a to 132d, 138a to 138d and 141, 142 onto one another and to establish a conductive connection capable of carrying current.
The conductive connection is implemented in such a way that short-circuit currents in the fault situation "single-pole short-circuit to ground (PE)" can also be conducted by the busbar housing 105. Toward that end the contact surfaces are dimensioned large enough that even at the maximum length of the busbar housing 105 the contact surfaces of each of the housing part pairs resulting due to the electrical connection of the individual housing parts in total form an overlap in each case of at least 450=2 per kA short-circuit current. The busbar housing 105 can therefore be used as a PE conductor.
According to Figure 10, the section 104b of the busbars is stepped at its end facing toward the section 104a and the two sections are arranged overlapping at their front faces facing toward one another in order to establish a current-conducting connection.
According to Figure 11, two of the supporting and retaining devices 107 which carry the first sections 104a of the busbars are in each case braced against the W-shaped first lateral profiled elements 132 of the first partial sheath 105a. Two more of the supporting and retaining devices 107 which carry the second sections of the busbars are in each case braced against the W-shaped first lateral profiled elements 132 of the second partial sheath 105b. In this way the first 104a of the two sections of each of the busbars can be displaced in the longitudinal direction 103 and is held fixedly in place transversely to the longitudinal direction in the first 105a of the two partial sheaths of the busbar trunking unit and the second 104b of the sections of each of the busbars can be displaced in the longitudinal direction 103 and is held fixedly in place transversely to the longitudinal direction in the second 105b of the two partial sheaths of the busbar trunking unit.
According to Figure 11, a second fixing means 151 in the form of a single bolt connection known from the publication DE 42 25 837 C2 is provided for the mutual fixing of the sections 104a and 104b, a bolt 152 of said single bolt connection engaging through mutually associated slotted holes 153, 154 of the sections 104a, 104b in the overlap zone. The busbar housing 105 and the conductor rail pack formed from the busbars 104 are simultaneously connected captively to one another mechanically by means of said single bolt connection.
According to Figures 13 to 15, in the busbar trunking unit according to the invention the length Ll of the busbars 104 formed from the sections 104a and 104b (the length Ll of the conductor rail pack) and the length L2 of the busbar housing 105 formed from the partial sheaths 105a and 105b are freely (continuously) adjustable independently of one another over a large length range in each case (of in particular up to 60mm in each case). Accordingly, Figure 13 shows the busbar trunking unit in a first end position in which both the length Li of the busbars 104 and the length L2 of the busbar housing 105 are set to their shortest value. Figure 14 shows a middle position in which the lengths Li and L2 are set to intermediate values, and Figure 15 shows a second end position in which both the length Li of the busbars 104 and the length L2 of the busbar housing 105 are set to their longest value.
By means of the busbar trunking unit 102 according to the invention it is possible to compensate for tolerances occurring at the installation site during the assembly and installation of a daisychained busbar configuration of a busbar trunking system in a simple, time- and cost-saving manner. Assembly and manufacturing tolerances as well as preliminary configuration inaccuracies can be compensated for by simple on-site assembly and installation of the busbar trunking unit according to the invention. Time-consuming retrofitting of adapter pieces - as was previously required in practice - is no longer necessary. At the same time the technical features of the busbar trunking system in terms of current-carrying capacity, short-circuit resistance, PE
connection, IP protection class, or the freedom of movement of the conductor rail pack with respect to the busbar housing in the event of linear thermal expansion are advantageously maintained. It is also important that the external contours of the adjustable busbar trunking unit 102 according to the invention are very similar to the external contours of the rest of the busbar daisychain and therefore can be integrated visually into the busbar trunking system in an optimum manner.
Special planning rules for the configuration of the busbar trunking system are not to be taken into account in this case.
To facilitate installation of the busbar trunking unit 102 in the busbar daisychain of the busbar trunking system 101 and to adjust the length of the busbar housing 105, the two partial sheaths 105a and 105b are each provided with two handles 155.
In order to facilitate the assembly and installation of the busbar trunking unit and the adjustment of the length of the busbar housing it is furthermore advantageously provided to furnish each of the two partial sheaths with handles.
According to one aspect of the present invention, there is provided a busbar trunking unit for a busbar trunking system comprising busbars which are elongated in a longitudinal direction, are encased by a busbar housing, and are arranged flat next to one another in the busbar housing, wherein each of the busbars consists of two separate sections embodied as rigid profiled elements and connected to one another in series in an electrically conductive manner in the longitudinal direction, wherein the sections can be displaced independently of one another in the busbar housing in the longitudinal direction and are held fixedly in place transversely to the longitudinal direction, and wherein the busbar housing consists of two partial sheaths which are slidable into one another in a telescope-like manner in order to change the length of the busbar housing, wherein the length of the busbars formed from the sections and a length of the busbar housing formed from the partial sheaths are freely adjustable independently of one another, wherein the two partial sheaths are each made of a current conducting material and in order to establish their electrically conductive connection the two partial sheaths form mutually associated electrical contact surfaces which are held under contact force directly against one another in an 4a electrically conductive manner and form a current path of the busbar trunking unit.
The invention is described hereinbelow with reference to the following figures, in which:
Figures 1 and 2 show a busbar trunking system known from practice comprising a busbar trunking unit in the form of an expansion unit, Figure 3 shows a busbar trunking system comprising a busbar trunking unit according to the invention in a perspective view with busbar and busbar housing, Figures 4, 11 and 12 show three different sectional views of the busbar trunking unit according to Figure 3, Figures 5 to 9 show individual parts of the busbar housing, Figure 10 shows two sections of one of the busbars with connecting means in an exploded view, and Figures 13 to 15 show the busbar trunking unit partially in an exploded view, with the busbars and the busbar housing being independently adjusted to different lengths in each case.
Figures 1 and 2 show a busbar trunking system 1 known from practice comprising a busbar trunking unit 2 in the form of an expansion unit which is part of a busbar daisychain of the busbar trunking system. In a longitudinal direction 3, the expansion unit 2 has elongated busbars 4 which are encased by a busbar housing 5 and are arranged flat next to one another in the busbar housing 5. With said known busbar trunking unit, each of the busbars 4 consists of two separate sections 4a, 4b which are embodied as rigid profiled elements and are connected to one another in series in an electrically conductive manner in the longitudinal direction 3, wherein the sections 4a, 4b can be displaced independently of one another in the busbar housing 5 in the longitudinal direction and are held fixedly in place transversely to the longitudinal direction 3. Supporting and retaining devices 7, as already known from the publication EP 0 530 521 Bl, serve for that purpose.
The two sections 4a, 4b of each of the busbars 4 are in each case connected to one another in an electrically conductive manner by means of a flexible conductor strip 6, the two ends of the conductor strip being welded to the front faces of the two sections 4a, 4b facing toward one another.
Figures 3 and 4 show a busbar trunking system 101 according to the invention comprising a busbar trunking unit 102 according to the invention. The busbar trunking unit 102 according to the invention also has busbars 104 which are elongated in a longitudinal direction 103, form a conductor rail pack and are arranged, enclosed by a busbar housing 105, flat next to one another in the busbar housing 105. Furthermore, in this case too, each of the busbars 104 consists of two separate sections 104a, 104b which are embodied as rigid profiled elements and are connected to one another in series in an electrically conductive manner in the longitudinal direction 103. Here too, the sections 104a, 104b can be displaced independently of one another in the busbar housing 105 in the longitudinal direction 103 and are held fixedly in place transversely to the longitudinal direction 103 by means of supporting and retaining devices 107 in the manner known from the publication EP 0 530 521 21. The two sections are - as will be shown hereinafter - connected to one another in a captive but releasable manner.
The busbar housing 105 consists of two partial sheaths 105a and 105b, which engage in one another in a telescope-like manner and which are slidable, telescope-like, into one another continuously to different depths in order to change the length of the busbar housing 105.
In this case a first 105a of the two partial sheaths is formed by nine housing parts 111 to 119. The second partial sheath is formed by five housing parts 121 to 125. Several of the housing parts in each case are common parts which are shown again individually in Figures 5 to 9.
Thus, the housing parts designated by 111-and 121 in Figures 3 and 4 are embodied according to Figure 5 as first covering profiled elements 130 bent into a U shape, each forming an end-side flange. Each of said end-side flanges serves to connect to a further busbar trunking unit of the busbar daisychain and for this purpose has first fixing holes 131.
According to Figure 6, the housing parts designated by 112, 113, 122 and 123 in Figures 3 and 4 are first lateral profiled elements 132 bent into a W shape. These have second fixing holes 133 for connecting to a further busbar trunking unit of the busbar daisychain, as well as third 134 and fourth 135 fixing holes.
According to Figure 7, the housing parts designated by 114, 115, 124 and 125 in Figures 3 and 4 are flat ventilation grilles 136 having fifth fixing holes 137. In this case the fourth 135 and fifth 137 fixing holes serve for connecting the first lateral profiled elements 132 to the ventilation grilles 136.
The housing parts designated by 116 and 117 and 118 and 119 in Figures 3 and 4 form a further flange overlapping and connecting the ventilation grilles and the first lateral profiled elements and fulfilling the function of guiding the second partial sheath 105b in the first partial sheath 105a in a telescope-like manner. For this purpose the housing parts 116 and 117, which according to Figure 8 form W-shaped second lateral profiled elements 138, and the housing parts 118 and 119, which according to Figure 9 form U-shaped second covering profiled elements 141, each have slotted holes 140 and 143 respectively on opposite sides, in which holes, according to Figure 3, first fixing means 150 in the form of fixing screws are guided. The two partial sheaths 105a, 105b are captively connected to one another by means of the fixing screws, because said fixing means engage through the slotted holes 140, 143 of the first of the two partial sheaths 105a and the associated fixing holes 134 of the second 105b of the two partial sheaths.
The two partial sheaths 105a, 105b are each made of a current-conducting material - in particular galvanized steel or aluminum - and are connected to one another in an electrically conductive manner in such a way that they form a current path which can be used as a PE conductor. In order to establish the electrically conductive connection the two partial sheaths 105a, 105b in this case form contact pairs composed of mutually associated electrical contact surfaces which are held under contact force directly against one another in an electrically conductive manner.
In this arrangement said contact surfaces are embodied on the U-shaped first covering profiled elements 130, the W-shaped first lateral profiled elements 132, the W-shaped second lateral profiled elements 138 and the U-shaped second covering profiled elements 141 in the manner shown in Figures 5 and 6 and 8 and 9.
Thus, according to Figure 5, the inward-facing surfaces of the first covering profiled elements 130 provided with the fixing holes 131 form the first 130a and 130b of the contact surfaces, and, according to Figure 9, the inward-facing surfaces of the second covering profiled elements 141 provided with the fixing holes 142 and the slotted holes 143 form the second 141a and 141b of the contact surfaces. For this purpose the said surfaces forming the first and second of the contact surfaces are kept metallically bare, while the remaining surfaces of the covering profiled elements 130 and 141 formed from current-conducting material - in particular made of galvanized steel or aluminum - are additionally provided with a color coating.
Furthermore, according to Figure 6, sections of the outward-facing surfaces of the first lateral profiled elements 132 provided with the fixing holes 133 and 134 form the third 132a to 132d of the contact surfaces. In addition, according to Figure 8, the sides of the second lateral profiled elements 138 provided with the fixing holes 139 and the slotted holes 140 form the fourth 138a to 138d of the contact surfaces with their inward- and outward-facing surfaces. In this case too the said surfaces forming the third and fourth of the contact surfaces are kept metallically bare, while the remaining surfaces of the lateral profiled elements 132 and 138 formed from current-conducting material - in particular made of galvanized steel or aluminum - are additionally provided with a color coating.
Thus, the housing parts 122 and 116 and 123 and 117 are metallically bare in overlapping areas and are connected in an electrically conductive manner via contact pairs accordingly formed from the contact surfaces 132a, 132b, 138a and 138b.
In addition, however, the housing parts 116, 118; 116, 119;
117, 118; 117, 119 are also metallically bare in their overlapping area and are connected in an electrically conductive manner via contact pairs accordingly formed from the contact surfaces 138c, 138d, 141a and 141b.
Furthermore, the housing parts 112 and 116 and 113 and 117 are metallically bare in overlapping areas and are connected in an electrically conductive manner via contact pairs accordingly formed from the contact surfaces 132a, 132b, 138a and 138b.
The fixing means (in this case screwed connections) designated by 150 serve to press the mutually associated surfaces of the bare contact surfaces 130a, 130b, 132a to 132d, 138a to 138d and 141, 142 onto one another and to establish a conductive connection capable of carrying current.
The conductive connection is implemented in such a way that short-circuit currents in the fault situation "single-pole short-circuit to ground (PE)" can also be conducted by the busbar housing 105. Toward that end the contact surfaces are dimensioned large enough that even at the maximum length of the busbar housing 105 the contact surfaces of each of the housing part pairs resulting due to the electrical connection of the individual housing parts in total form an overlap in each case of at least 450=2 per kA short-circuit current. The busbar housing 105 can therefore be used as a PE conductor.
According to Figure 10, the section 104b of the busbars is stepped at its end facing toward the section 104a and the two sections are arranged overlapping at their front faces facing toward one another in order to establish a current-conducting connection.
According to Figure 11, two of the supporting and retaining devices 107 which carry the first sections 104a of the busbars are in each case braced against the W-shaped first lateral profiled elements 132 of the first partial sheath 105a. Two more of the supporting and retaining devices 107 which carry the second sections of the busbars are in each case braced against the W-shaped first lateral profiled elements 132 of the second partial sheath 105b. In this way the first 104a of the two sections of each of the busbars can be displaced in the longitudinal direction 103 and is held fixedly in place transversely to the longitudinal direction in the first 105a of the two partial sheaths of the busbar trunking unit and the second 104b of the sections of each of the busbars can be displaced in the longitudinal direction 103 and is held fixedly in place transversely to the longitudinal direction in the second 105b of the two partial sheaths of the busbar trunking unit.
According to Figure 11, a second fixing means 151 in the form of a single bolt connection known from the publication DE 42 25 837 C2 is provided for the mutual fixing of the sections 104a and 104b, a bolt 152 of said single bolt connection engaging through mutually associated slotted holes 153, 154 of the sections 104a, 104b in the overlap zone. The busbar housing 105 and the conductor rail pack formed from the busbars 104 are simultaneously connected captively to one another mechanically by means of said single bolt connection.
According to Figures 13 to 15, in the busbar trunking unit according to the invention the length Ll of the busbars 104 formed from the sections 104a and 104b (the length Ll of the conductor rail pack) and the length L2 of the busbar housing 105 formed from the partial sheaths 105a and 105b are freely (continuously) adjustable independently of one another over a large length range in each case (of in particular up to 60mm in each case). Accordingly, Figure 13 shows the busbar trunking unit in a first end position in which both the length Li of the busbars 104 and the length L2 of the busbar housing 105 are set to their shortest value. Figure 14 shows a middle position in which the lengths Li and L2 are set to intermediate values, and Figure 15 shows a second end position in which both the length Li of the busbars 104 and the length L2 of the busbar housing 105 are set to their longest value.
By means of the busbar trunking unit 102 according to the invention it is possible to compensate for tolerances occurring at the installation site during the assembly and installation of a daisychained busbar configuration of a busbar trunking system in a simple, time- and cost-saving manner. Assembly and manufacturing tolerances as well as preliminary configuration inaccuracies can be compensated for by simple on-site assembly and installation of the busbar trunking unit according to the invention. Time-consuming retrofitting of adapter pieces - as was previously required in practice - is no longer necessary. At the same time the technical features of the busbar trunking system in terms of current-carrying capacity, short-circuit resistance, PE
connection, IP protection class, or the freedom of movement of the conductor rail pack with respect to the busbar housing in the event of linear thermal expansion are advantageously maintained. It is also important that the external contours of the adjustable busbar trunking unit 102 according to the invention are very similar to the external contours of the rest of the busbar daisychain and therefore can be integrated visually into the busbar trunking system in an optimum manner.
Special planning rules for the configuration of the busbar trunking system are not to be taken into account in this case.
To facilitate installation of the busbar trunking unit 102 in the busbar daisychain of the busbar trunking system 101 and to adjust the length of the busbar housing 105, the two partial sheaths 105a and 105b are each provided with two handles 155.
Claims (7)
1. A busbar trunking unit for a busbar trunking system comprising busbars which are elongated in a longitudinal direction, are encased by a busbar housing, and are arranged flat next to one another in the busbar housing, wherein each of the busbars consists of two separate sections embodied as rigid profiled elements and connected to one another in series in an electrically conductive manner in the longitudinal direction, wherein the sections can be displaced independently of one another in the busbar housing in the longitudinal direction and are held fixedly in place transversely to the longitudinal direction, and wherein the busbar housing consists of two partial sheaths which are slidable into one another in a telescope-like manner in order to change the length of the busbar housing, wherein the length of the busbars formed from the sections and a length of the busbar housing formed from the partial sheaths are freely adjustable independently of one another, wherein the two partial sheaths are each made of a current conducting material and in order to establish their electrically conductive connection the two partial sheaths form mutually associated electrical contact surfaces which are held under contact force directly against one another in an electrically conductive manner and form a current path of the busbar trunking unit.
2. The busbar trunking unit as claimed in claim 1, wherein a first of the two sections of each of the busbars can be displaced in the longitudinal direction and is held fixedly in place transversely to the longitudinal direction in a first of the two partial sheaths of the busbar trunking unit and the second of the sections of each of the busbars can be displaced in the longitudinal direction and is held fixedly in place transversely to the longitudinal direction in the second of the two partial sheaths of the busbar trunking unit, and in that the two sections on the one hand and the two partial sheaths on the other hand are captively connected to one another in each case.
3. The busbar trunking unit as claimed in claim 2, wherein first fixing means are provided for mutual fixing of the two partial sheaths of the busbar housing, which fixing means engage through slotted holes of the first of the two partial sheaths and associated fixing holes of the second of the two partial sheaths.
4. The busbar trunking unit as claimed in one of claims 1 to 3, wherein in order to esltablish a current-conducting connection the sections overlap at their front faces facing toward one another.
5. The busbar trunking unit as claimed in one of claims 1 to 4, wherein a second fixing means is provided for mutual fixing of the sections, which fixing means engages through mutually associated slotted holes of the sections in the overlap zone.
6. The busbar trunking unit as claimed in one of claims 1 to 5, wherein the two partial sheaths are each provided with handles.
7. A busbar trunking system comprising busbar trunking units which are coupled to one another by their front face in order to form a busbar daisychain, wherein at least one of the busbar trunking units is embodied as claimed in one of claims 1 to 6.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010045949.6 | 2010-09-21 | ||
| DE102010045949A DE102010045949A1 (en) | 2010-09-21 | 2010-09-21 | Rail box and busbar trunking system with a rail box |
| PCT/EP2011/064568 WO2012038177A1 (en) | 2010-09-21 | 2011-08-24 | Busbar trunking unit and busbar trunking system comprising a busbar trunking unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2813004A1 CA2813004A1 (en) | 2012-03-29 |
| CA2813004C true CA2813004C (en) | 2019-07-09 |
Family
ID=44534404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2813004A Expired - Fee Related CA2813004C (en) | 2010-09-21 | 2011-08-24 | Busbar trunking unit and busbar trunking system comprising a busbar trunking unit |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2593999B1 (en) |
| CN (1) | CN203589648U (en) |
| CA (1) | CA2813004C (en) |
| DE (1) | DE102010045949A1 (en) |
| WO (1) | WO2012038177A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107078490B (en) * | 2014-09-22 | 2019-01-04 | 西门子公司 | Spacing device, the module with spacing device and the bus-bar system with module |
| WO2016045950A1 (en) * | 2014-09-22 | 2016-03-31 | Siemens Aktiengesellschaft | Busbar system |
| CN104538915A (en) * | 2015-01-04 | 2015-04-22 | 河南森源电气股份有限公司 | Adjustable metal enclosed busbar bridge |
| CN108512169B (en) * | 2018-05-18 | 2024-02-20 | 河南森源电气股份有限公司 | Bus bridge frame box expansion joint and bus bridge frame expansion box |
| EP3876358B1 (en) * | 2020-03-03 | 2023-11-01 | Siemens Aktiengesellschaft | Indiscrete contact arrangement between a power rail arrangement of a power supply and a socket of a consumer |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3571488A (en) * | 1969-04-11 | 1971-03-16 | Federal Pacific Electric Co | Enclosed bus duct |
| DE9110388U1 (en) | 1991-08-22 | 1992-12-17 | Kloeckner-Moeller Gmbh, 5300 Bonn, De | |
| US5224575A (en) | 1991-12-17 | 1993-07-06 | Inesscon Inc. | Power conductor rail expansion joint |
| EP0562434A3 (en) * | 1992-03-23 | 1995-03-22 | Tg Tardito Trading S R L | Prefabricated modular waveguide for carrying and distributing low- and medium-voltage electric power |
| DE4225837C2 (en) * | 1992-08-05 | 2003-05-22 | Moeller Gmbh | Connecting device for busbars in low-voltage rail systems for distributing electrical energy and method for adjusting the connecting device |
| US5785542A (en) * | 1996-02-15 | 1998-07-28 | Qbc, Inc. | Electrical distribution system having an improved bus coupler |
| DE19609006C2 (en) * | 1996-02-28 | 1998-07-02 | Alusuisse Lonza Services Ag | System of at least two composite profiles as busbars |
| EP0933855B1 (en) | 1998-02-04 | 2001-05-16 | Zucchini S.P.A. | Prefabricated tubular busbar element |
| DE102009032619A1 (en) * | 2009-07-07 | 2011-01-13 | Siemens Aktiengesellschaft | Rail box for rail distribution system, has bus bars elongated in longitudinal direction, and rail housing having two partial coats |
-
2010
- 2010-09-21 DE DE102010045949A patent/DE102010045949A1/en not_active Withdrawn
-
2011
- 2011-08-24 EP EP11749811.3A patent/EP2593999B1/en not_active Not-in-force
- 2011-08-24 CN CN201190000748.1U patent/CN203589648U/en not_active Expired - Lifetime
- 2011-08-24 CA CA2813004A patent/CA2813004C/en not_active Expired - Fee Related
- 2011-08-24 WO PCT/EP2011/064568 patent/WO2012038177A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| DE102010045949A1 (en) | 2012-04-26 |
| EP2593999A1 (en) | 2013-05-22 |
| CN203589648U (en) | 2014-05-07 |
| CA2813004A1 (en) | 2012-03-29 |
| EP2593999B1 (en) | 2017-11-01 |
| WO2012038177A1 (en) | 2012-03-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |
Effective date: 20160623 |
|
| MKLA | Lapsed |
Effective date: 20220824 |