WO2009077116A1 - Clip type profile inserts for cable guide elements - Google Patents

Clip type profile inserts for cable guide elements Download PDF

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Publication number
WO2009077116A1
WO2009077116A1 PCT/EP2008/010514 EP2008010514W WO2009077116A1 WO 2009077116 A1 WO2009077116 A1 WO 2009077116A1 EP 2008010514 W EP2008010514 W EP 2008010514W WO 2009077116 A1 WO2009077116 A1 WO 2009077116A1
Authority
WO
Grant status
Application
Patent type
Prior art keywords
cable guide
shielding
guide elements
cable
profile
Prior art date
Application number
PCT/EP2008/010514
Other languages
German (de)
French (fr)
Inventor
Anton Zahradnik
Original Assignee
Anton Zahradnik
Priority date (The priority date 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 date listed.)
Filing date
Publication date

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00Installations of electric cables or lines in or on buildings, equivalent structures or vehicles
    • H02G3/02Details
    • H02G3/04Protective tubings or conduits or channels or other supports
    • H02G3/0406Details thereof
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00Installations of electric cables or lines in or on buildings, equivalent structures or vehicles
    • H02G3/02Details
    • H02G3/04Protective tubings or conduits or channels or other supports
    • H02G3/0431Wall trunking

Abstract

The invention relates to a profile insert for cable guide elements, such as cable channels (1) or cable trays or the like, made of shielding materials for shielding electrical and magnetic alternating fields, in the form of an open channel and fitting in the profile of the cable guide element, the invention being a clip (3) holding onto the side of the cable guide elements (1) by the elastic pressure thereof.

Description

Clasp-like profile inserts for Kabelführungsei emente

description

The invention relates to a shaped insert for cable guide elements such as cable ducts or cable trays, etc., wherein the profiled insert is made of shielding materials to shield electric and magnetic fields in the form of an open channel and suitably designed in the profile of the cable guide member.

State of the art

Conventional cable guide elements for current-carrying conductors are made of different materials. In cases where cable guide elements are desired shielding effect in current supplying municipal systems, it is common to use steel sheets or aluminum sheets. At locations where a shield is not needed, do not find shielding plastics use. Although the steel sheets commonly used as well as aluminum sheets have a shielding effect as masonry against electrical fields, but they show no shielding against the simultaneously occurring alternating magnetic fields that can spread unabated.

Disadvantages of the conventional cable guide elements:

• cable management elements such as cable ducts, etc. made of plastic do not have shielding effect against electrical and magnetic fields. • cable guide elements such as cable ducts made of steel or aluminum have shielding effect only against alternating electric fields, and electromagnetic wave - no shielding magnetic fields. Systems made of steel or aluminum due to their material thickness heavy in weight and unwieldy, and therefore costly. The metal profile must be able to support its own weight without deformation.

Furthermore, can be in this case, the shielding factor already laid cable guide elements anywhere subsequently not change. In this case, these elements must be replaced.

• cable management elements such as cable ducts from plastic compounds containing shielding substances, due to the time needed for effective shielding material thickness heavy in weight and therefore unwieldy as well as costly since the technical specification of the

must support material focused not only on weight but also the weight of the containing shielding component made of metal or carbon. Also in this case, the shielding factor already laid cable guide elements at any location can not be changed later. In this case, they must

Elements to be replaced.

• For cable management elements such as cable ducts made of plastic with fixed plates, the material thickness of the supporting plastic component is high to be set, the system is heavy in weight, so unwieldy and expensive. Also in this case, the shielding factor already laid cable guide elements at any location can not be changed later. In this case, the elements must be replaced.

Summarized:

In the aforementioned conventional systems shield made of metal whose material costs as well as handling and transportation costs are relatively high. Furthermore, causing the replacement of already installed non-shielded, or not enough shielding elements against shielding elements high labor costs.

Due to this fact the replacement of already installed non-shielding shielding cable guide elements at work or sleeping place is at the expense of the health of living organisms in the vicinity either temporally delayed or not carried out in most cases. Alternating magnetic fields are not shielded, causing eddy currents in the human body and can affect the nervous system healthy.

OBJECT OF THE INVENTION

The primary object of the invention is to provide a readily attachable and variable shielding against the resultant electrical, but especially against alternating magnetic fields of cable guide members, etc., in municipal power supplying systems, especially in homes, offices, hospitals, public buildings.

The secondary object of the invention is may be that in order to shield electric and magnetic fields as well as electromagnetic waves in the manufacture of new and old in the modification of non-shielded or not sufficiently shielded cable guide elements, the shielding factor simply adapted to set up or changed. These objects are achieved in that the profile insert initially described by keeps its elastic pressure on the side of the cable guide elements. This invention reduces material costs, the clasp-like sheet profiles can be inserted without any special effort in cable guide elements.

It can especially the adaptation of unshielded cable guide elements on such desired locations facilitate, where you been the installation of a post-screening due to the high costs and also due to the inconvenience of the work on the need for all the cable guide elements or even the whole wiring by shielding the need to replace cable guide elements, has avoided.

Thus, in local power systems, a variable, conformable to local circumstances and replaceable shield can be provided at cable guide elements. The shielding performance may relate to the type of screening media on alternating electric fields in alternating magnetic fields as well as to electromagnetic waves. It also achieved the goal of being able to change the shielding behavior of already installed as well as new cable guide elements by shielding Profile deposits at specific sites by simple manipulations.

The material costs for shielding cable guide elements are reduced, there can be used as carrier material inexpensive, non-shielding plastic material, so that for shielding only light U- according to the invention shaped clasp-like profiles of shielding materials, preferably have to be inserted from soft magnetic alloys.

Installation costs are reduced in terms of working hours, handling and weight. The lightweight, clasp shaped profiles must be inserted at the desired locations only in the open cable guide elements.

The object of the invention is achieved by

• laying of conventional low-cost and lightweight cable guide elements made of plastic. Subsequent purpose of adaptation shielding property of cable guide elements at preferred locations by inserting the shielding inserts with the desired

Shielding performance.

• possibility of variation of the shielding material and the shielding property.

a. Clip-like deposits consisting of conductive metals such as steel or aluminum, copper, etc., to shield electrical alternating fields and electromagnetic waves. - No shielding magnetic Wechselfelder- b. Clip-like inserts consisting of soft magnetic

alloys

-to shield electrical alternating fields and magnetic fields, and electromagnetic Wellen.- c. Clip-like deposits from plastic compounds --with shielding materials for shielding electric fields as well as magnetic fields and electromagnetic waves. -

Over a cable guide the clasp-like deposits can at planned job or appropriate sections with both greater shielding capability, for example, jobs, beds, etc., as well as with a weaker shielding property, such as corridors, stairwells, etc. used in cable guide elements or replaced - Replace without this cable guide elements have to.

Thin, interchangeable clasp-like profile deposits of shielding material Enclosed in cable guide elements are light in weight and easily exchanged. At planned job, the shielding of a cable guide profile inserts are sorted by shielding ability with respect to electromagnetic waves, electrical fields, as well as alternating magnetic fields can be used.

Application and effects of the invention

So far it has proceeded from the fact that one can use in certain shielding line areas or non-shielding cable guide elements. But this definition is not enough the facts. It has not been taken into consideration that, for example, etc. alternating electric fields occur in open-plan offices or hospitals to wirings, not only can which be shielded by cable guide elements made of steel or aluminum, but that different current intensities occur depending on the position in a line guiding, which in turn site-specific a require different shield with respect to the strength of the resulting magnetic alternating fields.

There is a widely held view that a shield in certain places local power lines cable guide elements made of steel or aluminum or a shielded cable to prevent the spread "electromagnetic waves" suffice. It is often overlooked that local power lines at a frequency of 50 Hz is no "electromagnetic waves" but - "alternating electric fields" and "magnetic alternating fields" -verursachen, and that alternating magnetic fields penetrate most materials almost unabated, and, for example, etc., steel, aluminum, earth, masonry, as well as normal cable shields of copper, nickel

In the low frequency range electrical and magnetic fields must be considered separately, one speaks in this case of decoupled field components. In contrast, the electric and magnetic field are in the high frequency range from about 100 kHz closely linked or "coupled". In this frequency range is known as electromagnetic waves propagate at the speed of light. Cable routing components from materials that shield alternating magnetic fields, such as soft magnetic alloys, coal, etc., are due to their high material price very expensive and therefore be avoided.

For this reason the shield of the invention is not made by the material of the cable guide elements alone as such, but by the inventive use of thin and therefore lightweight brace-shaped inserts in the cable guide elements.

The invention enables the shielding of cable guide elements municipal piping systems with the possibility of positional variation of the ac magnetic field shielding property, which is due to different current in various conducting areas needed. Therefore, it allows not only a shielding of electrical fields, but also by magnetic Feldern- and of course also of electromagnetic waves.

For example, if an electrical wiring that needs to eat a lot of computers and monitors or other devices. Taking the power consumption per workstation with 500 watts, so current but current flows on the last work of wiring with a thickness of about 2 A at 20 computers on this wiring on the first workstation with a thickness of about 40 A. If this work yet to be located at a distribution point to other consumers, so to be expected at this point still far higher currents where can be achieved up to 2000 a. Since the strength of the alternating magnetic fields of the current present in the corresponding conductor section is proportional, there are people in often at a short distance from electrical appliances such as no or low shielding protection is needed for the final work, which, however, towards the first, in this wiring located pantograph should be strengthened continuously variable. This fact has not yet been moved to the current state of the art in the style of clasp-like deposits in cable management elements into consideration. By applying the brace-shaped shielding deposits inventive various strengths in the individual cable routing elements of a proper shielding especially against the leakage magnetic fields can be done in various management areas sufficiently. Low-frequency alternating magnetic fields induce in the human body electrical eddy currents that result similar to the effect of electric fields at different current densities in the body. The strength of the induced currents depends in particular on the frequency of the magnetic flux density and the extent of the field, as well as the surface of the penetrated body cross-section.

Is imposed on low-frequency magnetic fields, many medical studies on their effect on the human body and thresholds were calculated, which are not achieved in most cases. However, there are electro-sensitive persons and also the person various daily personal disposition, illness and stress, which can make people sensitive, play a role.

Therefore, fatigue, irritability, nervousness in the workplace, problems with pacemakers and similar devices can be caused by the influence of particular magnetic fields. Induced by the alternating magnetic field in the human body eddy currents can disturb, etc. in addition to harassment and disturbance of well-being and pacemakers, nerve stimulators, implanted insulin pumps or hearing prostheses. Such effects can be at least reduced by the inventive variable, spatially related shield. In their assessment, especially the daily duration of exposure at work or at home at the sleeping place as well as the distance from the source of the alternating field are considered.

In contrast to the alternating magnetic field, the strength of the electric alternating field is directed only after the applied voltage on the line and not by the current intensity; Therefore -The alternating electric field around the wiring remains equally, no matter at any point whether her

Electricity consumers are turned on or not. The alternating electric field can be shielded by masonry and steel, aluminum.

Since alternating magnetic fields in the frequency range of 50 Hertz undisturbed by steel, plastic and masonry ausdringen on all sides, these can be high only by soft magnetic metals or carbon, or by substances

Shielding permeability.

The clasp-shaped profile deposits invention may be in the form of thin

Sheets or plies are made. They are prefabricated, inserted only in the usual cable guide elements such as plastic channels. Furthermore, they have the advantage that they can always be taken out when needed and / or replaced without disconnecting the cable duct from the wall.

When using only one profile insert in the cable guide element that is

directed egress of the electrical and magnetic alternating fields on the open side of the clasp-like groove, usually after the wall is possible. If you want to avoid this, it is gegenseitlich a second shielding profile insert into the

insert cable guide element so that a gegenseitliche shield can be granted.

Optionally, nested inside each other find or sequential application to enhance the shielding and multiple profile inserts.

The existing problem with shields in municipal power supplying networks is not only to voltage-dependent, in the whole wiring constant exiting alternating electric fields by steel, copper, shielding aluminum, but also dependent on the local current intensity variable resulting alternating magnetic fields to shield in such a way that the screening factor of the shielding medium can be adjusted without significant material costs and labor costs to local conditions. This problem can be eliminated by the low-cost, light-shielding clasp-like inserts for cable guides.

drawings

Fig. 1 shows a cable guide element, in this case a cable channel 1 with cables located therein 2. To the right of cable duct 1 is located in such a

Cable duct 1 to be inserted inventive shielding profile insert 3. Behind the cover 4 of the cable channel 1 is shown, which closes the cable channel 1 after the insertion of the shielding clasp-shaped profile insert. 3

Fig. 2 to 11 show examples of different forms of channel-shaped clasp-like profiled inlays 3. The shapes of the profiled inserts 3 are not limited by the features specified in the drawing examples, and in any other form - according to the patent claims - possible because it to the in any form profile to be equipped cable guide element must be aligned. Fig. 9 shows an embodiment of a profile insert 3 for a double channel.

Claims

claims
1. profile insert for cable guide elements such as cable ducts (1) or cable trays, etc., wherein the profiled insert (3) of shielding materials to shield electric and magnetic alternating fields in
is the form of an open channel and configured to fit into the profile of the cable guide member, characterized in that is (3), that the profile insert a clasp holding by its elastic pressure on the side of the cable guide elements (1).
2. Profile deposits according to claim 1, characterized in that it consists of shielding materials, preferably made of soft magnetic alloys in the form of thin sheets, meshes, nets, knits, felts, foams or printing or further from laminates or plastic compounds with carbon.
3. profile insert according to claim 1 or 2, characterized in that the clasp (3) has lateral grooves.
4. Profile Insert according to claim 1, 2 or 3, characterized in that the clasp (3) has a lateral bend.
5. Profile Insert according to one of claims 1 to 4, characterized in that the clasp (3) is formed as a bonding conductor.
6. Profile Insert according to one of claims 1 to 5, characterized in that they extend over a plurality of cable guide elements (3).
PCT/EP2008/010514 2007-12-14 2008-12-11 Clip type profile inserts for cable guide elements WO2009077116A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT20372007 2007-12-14
ATA2037/2007 2007-12-14

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20080861591 EP2229717A1 (en) 2007-12-14 2008-12-11 Clip type profile inserts for cable guide elements

Publications (1)

Publication Number Publication Date
WO2009077116A1 true true WO2009077116A1 (en) 2009-06-25

Family

ID=40447005

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/010514 WO2009077116A1 (en) 2007-12-14 2008-12-11 Clip type profile inserts for cable guide elements

Country Status (2)

Country Link
EP (1) EP2229717A1 (en)
WO (1) WO2009077116A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1279359A (en) * 1969-12-17 1972-06-28 Manfred Dahl Trunking for the protected passage of conduits, tubing, pipes or the like
EP0330082A2 (en) * 1988-02-20 1989-08-30 Zipper-Technik Gmbh Cable holding device
US5336849A (en) * 1992-01-17 1994-08-09 The Wiremold Company Raceway assembly for power and communications conductors

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1279359A (en) * 1969-12-17 1972-06-28 Manfred Dahl Trunking for the protected passage of conduits, tubing, pipes or the like
EP0330082A2 (en) * 1988-02-20 1989-08-30 Zipper-Technik Gmbh Cable holding device
US5336849A (en) * 1992-01-17 1994-08-09 The Wiremold Company Raceway assembly for power and communications conductors

Also Published As

Publication number Publication date Type
EP2229717A1 (en) 2010-09-22 application

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