DE102011078612B3 - Cable plug-in protective cover for an electrical cable plug-in part, as well as electrical cable plug-in part - Google Patents

Abstract

The invention relates to a protective cover (200) for an electrical cable fitting (10), in particular an electrical cable plug part (10) for medium voltage applications, the protective cover (200) being at least partially elastic, and the protective cover (200) being designed such that the Protective cover (200) can be provided on the outside of the electrical cable set (10). The invention also relates to an electrical cable assembly (10), in particular an electrical cable plug-in part (10), for medium-voltage applications, the electrical cable assembly (10) having a protective sheath (200) according to the invention.

Description

The invention relates to a cable plug cover for an electrical cable plug for medium voltage applications. Furthermore, the invention relates to an electrical cable plug for medium voltage applications, comprising a cable plug part protective cover according to the invention.

Establishing electrical connections and terminations on medium and high voltage cables for high current applications by means of electrical cable connectors requires considerable experience of a fitter with precise handling of the accessories involved and the cable. The various accessory manufacturers are constantly striving to develop materials, methods and products so that setting up the connections and terminations for such cables requires only average manual skills, therefore less assembly errors can occur and setting up is also less time consuming. In general, manufacturers' development efforts are to use standardized, self-developed components for modern cable accessories.

A problem with high-voltage electrical systems is that a conventional electrical insulator can become an electrical conductor, causing electrical leakage currents and flashovers, as well as corona discharges and ozone damaging human health. Thus, even the simplest components in medium- and high-voltage applications have critical importance, which contribute significantly to the reliability of these applications and damage prevention. In the case of cable connections or cable plug-in parts, particular care must be taken to ensure that there are no air pockets, gaps and / or imperfections in critical areas of the connection or the relevant connection device. Furthermore, a concentration of electric field lines in edge regions of the cable or the cable connector parts must be avoided and possible electrical discharges are taken into account.

Furthermore, consideration must be given to the interests of an environment, wherein an electrical insulation of the cable may not be taken too much by too strong electric fields, which can lead to fires in the area. It is important to ensure an effective and permanently reliable earth connection for a shielding of the cable and other metallic reinforcements and shields, the penetration of moisture must be permanently and safely prevented. In addition, effective and over the years permanently secure electrical connections between the participating connectors should be established, with exposed electrical connections and bare metal parts must be isolated and sealed to prevent electrical over- and / or breakdowns.

Electrical cable plugs for medium and high voltage applications, such as shielded (angle) plugs and adapter (plug) connectors, have an externally provided, usually sprayed or sprayed, electrical conductive layer as an outer shield of the cable connector or its male part and the insulation. In some applications, additional metallic housings may also be used here, within which the cable plug-in part can be accommodated. The aim of such cable connectors is to have an electrically sufficiently conductive outer layer on the insulating cable plug part, which approximately maintains its properties, in particular a touch safety, an electrical resistance, over a total period of use under the relevant environmental conditions. Such periods of use are usually many years to a plurality of decades.

Some special regional requirements for such outer conductive layers are that they must withstand a ground fault of more than 80 A for about 30 minutes. In view of these challenges, it is preferable to have a thick and low-resistance outer conductive layer on the cable male part, which is hardly feasible with sprayed-on conductive layers. Here is a metal case of choice. Furthermore, sprayed-on conductive layers, which however are mechanically more robust than sprayed-on, significantly increase the cost of a cable connector because the material is expensive and also a manufacturing process to be used is comparatively prone to failure. In addition, disposal costs are to be considered, which are also high in sprayed conductive layers.

In addition, it is desirable to retrofit already installed cable connectors for an emergency of a ground fault such that z. B. above requirements for current level and duration are met. Metal housings are generally complementary to overmolded or sprayed outer conductive layers, but as heavy molded or formed components, they can only provide low surface area contact with the cable connectors due to their mechanical rigidity. Therefore, a permanent good electrical conductive connection must be established here, which in addition to the already high cost of a metal housing, the installation costs significantly increased. Furthermore, the minimum wall thicknesses of metal housings to be achieved are oversized for such applications.

Due to the required high durability, electrical cable connectors must be resistant to those chemicals that may be present in the environment in question, and also be insensitive to mechanical stresses, which preferably relates to the outer conductive layer. This is particularly problematic for thin, ie sprayed on other conductive layers. Furthermore, a production of a cable connector should have low cycle times and the cable connector itself have a low weight. Furthermore, the cable plug should pass a so-called nail test, ie that the cable plug does not mistakenly give the appearance of a defect again, it would work correctly. Furthermore, a touch safety of the cable connector should be guaranteed.

The DE 10 2008 007 405 A1 teaches an outer sleeve for buried high voltage electric cables, wherein a sleeve body of the outer sleeve is made of a silicone rubber or an EPDM rubber. - Further teaches the DE 100 16 727 A1 a field control body of a stretchable insulator material for high voltage electrical cables. By varying a wall thickness of the field control body, an inhomogeneous electric field of a longitudinal end section of the high-voltage cable can be influenced. - Furthermore, the teaches WO 2010/127281 A1 a cable connector for electrical high voltage cable, wherein a male part of the cable connector has an electrically semiconductive outer layer. - In addition, the reveals DE 81 30 116 U1 a closing device for a cable sleeve made of a thermoplastic material. The initially substantially flat cable sleeve is rolled up to a tubular cable sleeve around an electrical cable and fastened to this.

It is an object of the invention to provide an improved electrical cable connector, which is a cost-effective alternative to cable connectors with z. B. overmolded outer conductive layers forms. Furthermore, a cost-effective alternative to metal housings should be specified, this alternative should have a greater mechanical flexibility compared to metal housings. In addition, according to the invention, the object to be solved to provide a way to retrofit an already installed cable connector with respect to high ground fault requirements, without having to dismantle this.

The object of the invention is achieved by means of a cable plug part protective cover for an electrical cable plug part with external plug-in part shield for medium voltage applications, according to claim 1; and by means of an electrical cable plug with outer male part shield for medium voltage applications, solved according to claim 12. Advantageous developments, additional features and / or advantages of the invention will become apparent from the dependent claims and the description below.

The cable plug part protective cover according to the invention is configured, constructed or assembled in such a way that the protective cover can be provided on the outside on an electrical cable plug part for high electrical currents. Here, the protective cover is at least partially elastic and has on its inner side a layer with an electrically conductive layer as an electrical or electromagnetic shielding layer. The electrical connection device according to the invention has an electrical cable plug part and a cable plug part protective cover according to the invention provided thereon or on it, or the cable plug part additionally comprises the cable plug part protective cover according to the invention. In this case, the cable plug part has an outer shield, which is preferably designed as a conductive layer applied to an electrically insulating cable plug part, in particular sprayed or sprayed on. Other methods of applying such a conductive layer formed as an outer male part shield are of course applicable.

According to the invention, a less expensive product is provided as an alternative to the prior art, wherein the cable plug part protective cover in particular serves to reinforce an external electrical or electromagnetic shielding of the cable plug part. The cost reduction results from the fact that an alternative to a thick, sprayed conductive layer is given, wherein the cable connector itself, on one outer side, must have no or only a thin electrical conductive layer. This results in its production short cycle times and lower reject rates than cable connector parts with sprayed conductive layers. The protective cover of the invention is suitable as an electrical or electromagnetic shielding for retrofitting all verbäuter or non-built cable connector parts. In particular, it is possible in embodiments of the invention to carry out retrofitting without dismantling already installed cable plug-in parts.

Further, the cable plug cover may additionally have another function. So it is z. B. possible, the protective cover as mechanical protection z. As against abrasion, shocks and / or static loads to design, which may be particularly advantageous in outdoor applications. Furthermore, the protective cover can be used as a protection in chemically relatively aggressive environments, especially in subterranean sites (buried cable connectors). In addition, the protective cover as protection against environmental influences, as UV protection and / or as seizure protection serve. Furthermore, resulting from the close concern of the protective cover on the cable plug in comparison with metal housings no relative movement between the protective cover and the cable plug, so that it can not come to a wear of the cable connector.

The cable plug part protective cover according to the invention has a significantly lower weight than a metal housing and allows a close-fitting contact with the cable plug part. A material for the preferably at least partially elastic or flexible protective cover may be any electrically conductive material. Furthermore, electrically non-conductive materials are applicable, wherein the protective cover can be provided in such a case outside, inside or inside with an electrical conductive layer. Find this metal lines, such. As a braided screen application, the protective cover has excellent properties for transporting high electrical currents and thus meets the requirements of a ground fault. Overall, the protective cover can have up to four different layers. A structure of the protective cover can be adapted to any cable connector parts; a universal structure that is suitable for a variety of cable connectors, of course, also applicable.

According to the invention, the cable plug, a low or medium voltage connector, a base connector / connector, a coupling connector / connector, a cable connector, a (shielded) connector, an adapter (plug) connector, an end closure, a cable termination etc. for electrical voltages of the energy transmission, ie, low, medium and high voltages, which are possibly designed for gas-tight, in particular SF ₆ gas-insulated, applications. Areas of application of the cable connector part according to the invention are z. B. medium or high voltage applications, indoor or outdoor applications, in particular (load) switchgear, switching devices (apparatus, facilities, devices), transformers, electric motors, disconnectors, etc. Here, the cable connector may extend rectilinear or angled, wherein at one angled embodiment, a 90 ° angle is preferred. Correspondingly, the cable plug-in protective cover can be I-, L-, T- or Y-shaped.

In particular, according to the invention, the cable plug cover is designed to meet a requirement for electrical or electromagnetic shielding, mechanical protection, chemical protection, shock protection, current carrying capacity and / or electrical insulation. Ie. the protective covering has an electrically conductive layer, in particular a shielding layer, a current-carrying layer, a preferably outer layer with comparatively high mechanical wear resistance, a preferably outer layer with comparatively high chemical wear resistance and / or an electrical insulation layer.

In preferred embodiments of the invention, the elastic cable plug part protective sheath has at least one closed section in a circumferential direction and / or at least one open section in an axial direction. In this case, the cable plug-part protective cover may have an opening such that the cable plug-in protective cover preferably with the opening is at least partially or at least partially overlaying the cable plug part. Further, the cable plug cover may have a plurality of shells and / or sleeves such that the shells and / or sleeves are placeable on the cable plug, wherein the shells and / or sleeves preferably at least partially adjoin one another in a temporal connection thereto closed cable plug-in protective cover can be closed together. Here, the shells and / or the sleeves are preferably formed materially integral with each other. Furthermore, the cable plug part protective cover can be completely elastic.

According to the invention, two mutually associated shells, in particular two half-shells connected to one another on one side, of the cable plug-in protective sleeve can be connected to one another by means of mounting sections formed thereon, in particular rigid mounting strips. The mounting sections or mounting strips are preferably designed such that they can be fastened to one another by means of one or a plurality of fastening means, in particular screws, bolts, rivets, clips and / or clamps. According to the invention, the protective cover before and / or after mounting on the cable plug part at least one tubular and / or tubular portion, wherein in the presence of a plurality of tubular and / or tubular portions of the protective cover, these sections preferably directly together Fluid connection are, said fluid connection is filled by the cable connector.

The cable plug-in protective cover can be designed such that it can be mounted on a fully functional or ready-to-use cable plug-in part or on an outer plug-in part screen of the cable plug part or on a cable plug part (retrofit) already in use or installed. Here, the protective cover is a separable from the cable connector part, external component, which is preferably electrically well conductive. Furthermore, the protective cover can have a plurality of individual parts which can be mechanically connected to one another, adhesively bonded together and / or welded together. In addition, the protective cover can one-piece component, in particular a material integrally formed component, ie an integral component, be.

The cable plug part protective cover may be formed such that one or a plurality of axial sections of the cable plug part in the circumferential direction are substantially completely and / or preferably mainly coverable in the longitudinal direction. It is preferred that an inner dimension of the protective cover in an unloaded, preferably an unstretched, state is smaller than a corresponding outer dimension of the cable connector. In this case, it is preferred that essentially all inner circumferential dimensions of the protective sheath in the unloaded state are smaller than the corresponding outer circumferential dimensions of the cable male part. Furthermore, essentially all axial dimensions of the protective sleeve can be smaller or larger than the corresponding axial dimensions of the cable connector part. Furthermore, apart from a reduction factor, an inner contour of the protective cover is substantially similar to an outer contour of the cable connecting part.

In preferred embodiments of the invention, the cable plug part protective cover on its outer side a layer with an electrically conductive layer, the z. B. can be sprayed. Preferably, a respective layer consists of an electrically conductive plastic. Alternatively, the protective cover may have on its outer side a layer with an electrically insulating layer, which preferably consists of an electrically insulating plastic. Furthermore, the protective cover can have an electrically conductive current-carrying layer, in particular a preferably over-molded or bonded braided screen, which is preferably provided on the inside, inside or on the outside of the protective cover. In particular, by means of a shield braiding high electrical currents are permanently transferable, which protects the electrical cable plug and possibly also the device or device electrically connected thereto from damage in the event of a ground fault.

According to the invention, the cable plug part protective cover may have a grounding device, in particular a grounding strap, a grounding eye or a grounding lug. The grounding device can be designed in such a way and / or provided on / in the protective cover that the grounding device can be brought into electrical contact with a grounding device of the plug-in part. In this case, the grounding device of the protective cover can be designed such that it can be provided above the grounding device of the plug-in part and thus both components can be grounded by means of a single shielding or grounding line. The protective cover may have a connecting element, which is connectable to a connecting element of a second protective cover or a second protective cover section of the same protective cover, wherein the connecting elements are preferably designed such that they form an electrically conductive connection. The second protective sleeve section may be a separate component from the protective cover.

In preferred embodiments, the cable plug-in protective sleeve is a cast part, in particular an injection-molded part, which has a preferably elastic material, in particular a natural or a synthetic polymer, preferably an elastomer. Accordingly, the protective cover may comprise a silicone, in particular a silicone rubber, a rubber, in particular an ethylene-propylene-diene monomer (EPDM), or a thermoplastic elastomer. In this case, the material of the protective cover may be an electrically conductive or also an electrically non-conductive material. In the latter case, the protective cover may have a conductive layer or a braided shield. A thickness of the protective cover is preferably about 1 mm, about 2 mm, about 2.5 mm, about 3 mm, about 3.5 mm, about 4 mm, about 4.5 mm, about 5 mm, about 5.5 mm, about 6 mm or about 7 mm.

The invention will be explained in more detail below with reference to embodiments with reference to the accompanying drawings. In the schematic figures of the drawing show:

1 a sectional side view of a conventional cable connector (connecting device) for high voltage and high current applications with a sprayed conductive layer as an outer shield;

2 a side view of a first embodiment of a cut shown, according to the invention cable plug part protective cover in a mounting position on a not shown cut electrical cable plugging part;

3 in a to 2 analogous view of a second embodiment of the cable plug part protective cover according to the invention temporally before a setting of shells or sections of the protective cover;

4 an end view of the protective cover shown cut in an area of a mounting device of the protective cover 3 in mounting position on the partially cut cable plug part shown;

5 a side view of a third embodiment of a cut shown, according to the invention cable plug part protective cover in the mounting position on a not shown cut electrical base and coupling connector; and

6 in a partially sectioned side view of a fourth embodiment of the cable plug part protective cover according to the invention, which is mounted on an electrical cable connector.

The invention is based on an angled and shielded electrical cable connector 10 (please refer 1 ), which one in the 2 to 6 shown cable plug part protective cover according to the invention 200 having. This shows the 1 the Z. B. up to 24 kV and up to 800 A suitable cable plug 10 in detail, with the details in the 2 to 6 are omitted. It is of course possible to transfer the invention to other cable connectors (see above). - As the literature on medium and high voltage applications is often in English, some of the names of the cable connector are found 10 in English in the list of reference numerals.

The cable plug 10 (please refer 1 ) has an electrically insulating plug-in part 100 on, also as a shielded plug-in part 100 referred to as. The plug-in part 100 preferably consists of a highly modified silicone rubber, which is characterized by a high electrical strength, a high elongation at break and its high flammability. The plug-in part 100 has a thin-walled, electrically conductive outer shell 110 , the so-called plug-in part shielding 110 , on which fixed with an insulation of the cable connector 10 connected is. It provides together with the inner electrically conductive parts of the cable connector 10 for a controlled distribution of an electric field of the cable connector 10 and ensures that there is no risk to persons if accidentally touching a connection in operation.

In the present case is the plug-in part shield 110 than on the male part 100 sprayed shielding layer 110 formed, which consists of an electrically conductive silicone rubber. It is of course possible, other screen layers 110 (not shown in the drawing), if necessary, of course, to use from other materials. Also preferred are overmolded shield layers 110 , by means of which a greater current carrying capacity can be achieved, since they are thicker than sprayed shield layers 110 are. Other methods of applying the shielding layer 110 are of course applicable. It is possible in embodiments of the invention to this screen layer 110 completely dispensed with and only an inventive electrically conductive protective cover 200 apply.

Furthermore, the plug-in part 100 one as an inner conducting layer 120 trained inner plug-in shield 120 on, with this shielding 120 preferably also consists of an electrically conductive silicone rubber. The inner plug-in part shield 120 is as a Faraday cage 120 around a conductor connection 130 of the cable connector 10 educated. The conductor connection 130 is preferred as a screw 130 or compression cable lug 130 with shaving head bolt for connection of aluminum 2 or copper conductor high voltage cables 2 educated. A field control body 140 of the male part 10 in a transition region from a shielded to an unshielded area of the high voltage cable 2 affects or controls an electric field on a Aderschirmkante the high-voltage cable 2 ,

Furthermore, the plug-in part 100 a grounding device 104 preferably as a grounding eye 104 is formed and a ground of the cable connector 10 serves. This is the earthing eye 104 as a connection point for a shield line 3 educated. Inside the male part 100 is one as a threaded 150 or a contact pin 150 trained electrical contact device 150 intended. A spring washer and a nut ensure good electrical and mechanical contact of the contact device 150 with the conductor connection 130 , Furthermore, the cable plug part 10 a back removable plug 160 with a capacitive divider, with a preferred capacitive checkpoint 162 determine if the cable connector 10 or an electrical connection established therewith is under high electrical voltage. An electrically conductive cap 170 serves as a shield and as a protective cap for the sealing plug 160 ,

The cable plug part protective cover according to the invention 200 (please refer 2 to 6 ), as well as the outer conductive layer 110 of the male part 100 , preferably for removing surface charges, for field distribution and for electromagnetic shielding of the cable plug part 10 , Furthermore, the cable plug part protective cover 200 in addition or in isolation provide a mechanical and / or chemical protection. The cable plug cover 200 can also be referred to as a (shield) sheath, a (sheath) sheath, a (sheath) coating, a protective sheath, a (sheath) cover, a (sheath) cover, a (sheath) sheath or as a (Screen) hose are called. The following is just a protective cover 200 the speech, wherein the preferably electrically conductive protective cover 200 , an elastic, in particular a flexible, unstable, soft, more or less supple, elastic, yielding and / or bendable material.

Ie. the protective cover 200 is formed elastically on at least one portion. It is preferred that a predominant part of the protective cover 200 is elastic. Another part, section and / or area of the protective cover 200 can have a different material and / or be rigid or rigid, which z. B. a mounting section 230 (see below) of the protective cover 200 may affect. Furthermore, the protective cover 200 z. B. be designed so that it is stiff or solid in an area in which it is exposed to mechanical stress, which z. B. in outdoor applications on a windward side of the protective cover 200 the case may be. The same applies to another protective task, in particular a chemical protection, which the protective cover according to the invention 200 has to afford.

The elastic areas of the protective cover 200 may allow for expansion from greater than 0% to more than 100%. Preferred are widenings of 5% to 50%. In the elastic areas is the protective cover 200 formed such that it is flat on the cable plug 10 is applied. Furthermore, the protective cover 200 preferably formed in a region elastically, in which the cable plug part 10 due to a mounting of a cable 2 expands or warps. This should by means of the protective cover of the invention 200 Sloping be greater than 20 ° bridgeable. Furthermore, the elastic and optionally with smears and the other areas of the protective cover 200 designed so that they all thermal expansion of the cable connector 10 participates. In preferred embodiments of the invention, the entire protective cover is 200 elastic, ie essentially the entire protective cover 200 can on the cable plug 10 lie flat.

The protective cover 200 is preferably poured, in particular injection-molded. But even a textile, so a flexible material, which consists of a fiber composite is as a material for the protective cover 200 applicable, wherein the textile, in particular at least on its surface, can be sufficiently electrically conductive and over the cable connector 10 is predictable. Comes a current carrying layer 220 , such as a braided screen 220 (see below) for use, so can be dispensed with the electrical conductivity of the textile. According to the invention, the protective cover comes 200 additionally or alternatively to the outer male part shield 110 for use, with the protective cover 200 the plug-in part 100 along its axial 12 . 14 or longitudinal sections 12 . 14 surrounds in the circumferential direction. It is preferred that the corresponding longitudinal sections of the protective cover 200 slightly shorter than the axial sections 12 . 14 of the male part 100 are.

A form of protective cover 200 corresponds to a shape of the male part 100 or a shape of the cable connector 10 , In the present case this is approximately the form of a "T" or an "L". Other forms, in particular a rectilinear design of the protective cover 200 , of course, are applicable even if the male part 100 is not rectilinear. In such a case, the protective cover covers 200 only one axial section 12 . 14 of the cable connector 10 from. Here is the protective cover 200 partially formed so that it must stretch over the corresponding axial sections 12 . 14 of the male part 100 to fit. This is a tight-fitting protective cover 200 guaranteed, with the protective cover 200 like a "skin" around the male part 100 sets.

Furthermore, it is preferred that the protective cover 200 , except for a side opening for the earthing eye 104 of the male part 100 , designed to be closed in all sizes (see 2 . 5 and 6 ) or closable (see 3 and 4 ). The protective cover 200 itself sits down, depending on a shape of the male part 100 , from short tubular or tubular sections or areas that are intersected, ie in fluid communication. At the respective ends, the protective cover 200 openings 206 on, from which the cable plug part 10 or its plug-in part 100 and the high voltage electrical cable 2 at least partially can stand out when the protective cover 200 on the cable plug 10 is mounted.

According to the in 2 illustrated embodiment of the invention is the protective cover 200 , except for the opening for the earthing eye 104 , closed at their circumferences, with the protective cover 200 over one of its openings 206 over the cable connector 10 or its connector housing 100 can be pulled over. For this the protective cover must 200 be sufficiently elastically deformable to tight in the assembled state on the male part 100 to be able to lie. An assembly of the protective cover 200 can be done when the cable plug 10 z. B. is not mounted on a system. Ie. the protective cover 200 is in a production of the cable connector 10 mountable or subsequently with a disassembly of an established electrical connection with the cable connector 10 ,

For a ground connection, the protective cover 200 a grounding device 204 on that as a grounding lug 204 , a grounding eye 204 or a grounding lug 204 , can be trained. To this Schutzhüllenerdung 204 is a shielding line 3 (in the 2 to 5 not shown) electrically connected. In embodiments of the invention, the grounding device 204 the protective cover 200 adjacent to the grounding device 104 of the male part 100 be provided, in which case a common shielding 3 both the electrical cable plug 10 as well as the protective cover 200 can ground. In particular, the grounding device 204 the protective cover 200 be designed and provided such that they via the grounding device 104 of plug-in part 100 can be pulled and thus they are automatically in an electrically conductive connection.

The 3 and 4 show another embodiment of the separate protective cover 200 , Here are the individual axial sections 12 . 14 the protective cover 200 cut in the longitudinal direction, wherein the necessary cuts preferably at directly adjacent peripheral portions of the protective cover 200 are made. In this embodiment, not necessarily all axial sections 12 . 14 be cut open, but it may well be provided in the circumferential direction closed (part) section (not shown in the drawing).

The slicing causes shells 202 , Half shells 202 , Sections 202 or areas 202 the protective cover 200 which are preferably integrally connected to one another at a side opposite the respective cut. But it is also possible, the protective cover 200 also cut open at this point and the protective cover 200 on the cable plug 10 coming from two opposite sides to mount (not shown in the drawing). Ie. in such a case, the protective cover 200 built at least in two parts.

For fixing the cups together 202 can the respective free circumferential longitudinal ends z. B. as preferably rigid mounting rails 230 trained assembly sections 230 comprising one or a plurality of mounting devices 232 , in particular through holes 232 , exhibit. By means of mounting equipment 232 are the two bowls 202 fixable on each other. In the present case, this is done by means of screws 20 , Bolt 20 and / or rivets 20 trained fasteners 20 passing through coaxial through holes 232 be pushed. But clips or brackets (not shown) are applicable, or a bonding or welding two respective free circumferential longitudinal ends of the shells 202 is possible. The embodiments according to the 3 and 4 are particularly suitable for already mounted cable connectors 10 as an assembly of such a protective cover 200 can be done without the cable connector 10 to remove from an electrical connection.

Furthermore, the invention is based on 10 and coupling connectors 10 applicable, what in the 5 is shown. It is preferred that the two protective covers 200 from basic 10 and coupling connectors 10 be in an electrically conductive contact, so that only a grounding device 204 must be provided. This electrically conductive connection of the two protective covers 200 can, for example, by fasteners 210 . 212 take place, which are in mechanical contact with each other. As connecting elements 210 . 212 are z. B. tabs 210 . 212 , a tab and an eyelet (not shown in the drawing) or parts of a snap closure (also not shown in the drawing) applicable. This z. B. two tabs 210 . 212 , each of which has a through-hole electrically and mechanically connected to each other by means of a screw or a rivet.

The protective cover 200 may additionally or alternatively to an electrically conductive or insulating training, a current-carrying layer 220 , such as B. an electrically conductive shield 220 show what's in the 6 is shown. This current carrying layer 220 Can be inside or outside on the protective cover 200 be provided; also a housing of the current carrying layer 220 inside the protective cover 200 is possible. Here, the current carrying layer 220 in an injection mold for the protective cover 200 are inserted, wherein in a connection to the protective cover 200 on / around the shield 220 is provided. But also a bonding on an outside or inside of the protective cover 200 is applicable. The current-carrying layer is preferred 220 a braided screen 220 , a braided ladder 220 , a braid 220 , a braiding 220 or a shield 220 , But also a training as electrical conductive layer z. B. is sprayed inside or outside, or individual electrical wires are applicable.

Such embodiments have excellent electrical properties that do not change significantly over extended periods of time or become so bad that the protective cover 200 is no longer usable. In particular, the use of a screen braid 220 , z. B. a copper network 220 , equips the protective cover 200 for high ground fault requirements. Such a braided screen 220 has a certain radial extensibility, so that a protective cover equipped with it 200 via a cable plug 10 can be pulled over. After installation, the braided screen can 220 be contracted, so that a close-fitting contact of the protective cover 200 and / or the screen braid 220 with the cable plug 10 results. The screen braid 220 is with a shield wire 3 connected (not shown in the drawing) or the individual wires of the shield braid 220 form the screen line 3 ,

The protective cover 200 may include one or a plurality of layers in embodiments of the invention. Suitable layers for this purpose are an electrically insulating layer, an electrically conductive layer and / or a current-carrying layer. These layers can be combined in any manner, using only a single, two, three or four layers can. A possibly two-layered main layer of the protective cover 200 comprises an electrically conductive and / or electrically insulating material. Here, the protective cover 200 be provided internally and externally with an electrically conductive layer or layer. As already explained above, the current carrying layer 220 outboard, inside or inside the protective cover 200 be provided. In a preferred embodiment of the invention, the protective cover 200 inside an electrically conductive layer, to which a current carrying layer to the outside 220 or -lage connects. Outside is the protective cover 200 then z. B. provided by means of an electrically insulating layer.

Under a separate protective cover according to the invention 200 is a one- or multi-part protective cover 200 to understand which otherwise otherwise at least in the short term, but preferably in the long term perfectly functional electrical cable plug 10 improved in its electrical, mechanical, chemical and / or physical properties. Ie. in preferred embodiments of the invention extends the cable plug cover 200 the electrical screen properties, the mechanical strength and / or the chemical resistance of an outer male part shield 110 of the cable connector 10 , Find a multi-part protective cover 200 Application, so can the individual shells 202 , Half shells 202 , Sections 202 and / or areas 202 together gebodnet and / or mechanically together to the complete protective cover 200 get connected.

LIST OF REFERENCE NUMBERS

1

(Electrical) connecting device comprising an electrical cable plug 10 and a cable plug cover 200 , for, possibly gas-insulated, applications for the distribution of electrical energy

2

electrical high voltage cable, preferably aluminum or copper conductor high voltage cable

3

Shield cable, earthing cable

10

(electrical) cable plug connector, connector, high voltage connector, medium voltage connector, possibly gas-tight, for electrical high voltages (medium voltage, high voltage) in particular in the range above 1 kV and preferably below 75 kV to 100 kV (medium voltage application) - English name z. Eg: (insulated) (adapter) termination system, screened elbow, end plug

12

Axial-, longitudinal section of the cable connector 10 or of the male part 100

14

Axial-, longitudinal section of the cable connector 10 or of the male part 100

20

Fastener, screw, bolt, rivet, clips, clamp

100

(electrically insulating, shielded) male connector, connector housing - English name z. Eg: screened body (with a thin-walled screen, molded outer screen)

104

Earthing device, lug, eye, eyelet for shielding cable 3 , Plug-in ground - English name z. B .: earthing eye and ground lead, earth connection

110

outer plug part shield, electrically conductive shield or outer shell, conductive layer, preferably thin-walled and as sprayed or sprayed shield layer 110 trained - English name z. B .: thin-walled screen, molded outer screen

120

inner Steckteilabschirmung, electrically conductive shielding, conductive layer, Faraday cage - English name z. B: inner screen

130

Conductor connection, preferably screw or compression cable lug - English name z. Eg: mechanical lug, compressionlug, crimped cable lug

140

Field control body - English name z. For example: stress cone adapter

150

(electrical) contact device, threaded pin, contact pin - English name z. B: threaded pin, contact pin

160

rear plug with preferred capacitive divider - English name z. Eg: rear plug with test point

162

Checkpoint - English name z. For example: test point

170

(electrically conductive) cap - English name z. B .: conductive endcap

200

Cable plug part cover for an electrical or electromagnetic shielding and / or for a mechanical / chemical protection, protective / external shielding, (electrically conductive) separate protective cover, preferably at least partially made of an elastic, flexible, unstable, soft, more or less supple, built up compliant and / or bendable material

202

Shell, half shell, section or portion of the cable plug cover 200

204

Grounding device, lug, eye, eye for a shielding cable 3 , Plug-in ground - English name z. B .: earthing eye and ground lead, earth connection

206

Opening, front side opening

210

Connecting element, tab, eye / hook, part of a snap closure etc.

212

Connecting element, tab, hook / eye, part of the snap closure, etc.

220

Current carrying layer, shielding braid, shielding, in particular copper net, braided conductor, braiding, braiding

230

Mounting section, mounting rail

232

Mounting device, in particular through-hole

Claims (13)

Cable plug-in protective cover for an electrical cable plug-in part ( 10 ) with external plug-in part shielding ( 110 ) for medium-voltage applications, characterized in that the cable plug-in protective cover ( 200 ) has on its inside a layer with an electrically conductive layer and is at least partially elastic, wherein the cable plug part protective cover ( 200 ) is formed such that it is externally on the outer plug part shield ( 110 ) of the electrical cable plug ( 10 ) is electrically contactable providable. Cable plug part protective cover according to claim 1, characterized in that the cable plug part protective cover ( 200 ) has in a circumferential direction at least one closed portion and / or at least one open portion. Cable plug part protective cover according to one of the preceding claims, characterized in that the cable plug part protective cover ( 200 ) an opening ( 206 ) in such a way that it projects at least partially or at least in sections onto the electrical cable plug part (1) with an opening ( 10 ) can be pulled over. Cable plug part protective cover according to one of the preceding claims, characterized in that the cable plug part protective cover ( 200 ) is designed to meet a requirement for electromagnetic shielding, mechanical protection, chemical protection, shock protection, current carrying capacity or electrical insulation. Cable plug part protective cover according to one of the preceding claims, characterized in that the cable plug part protective cover ( 200 ) comprises an electrically conductive layer, a shielding layer, a current carrying layer, a layer having comparatively high mechanical wear resistance, a layer having comparatively high chemical wear resistance, or an insulating layer. Cable plug part protective cover according to one of the preceding claims, characterized in that the cable plug part protective cover ( 200 ) a plurality of trays ( 202 ) such that the shells ( 202 ) at the electrical cable plug ( 10 ) are placeable, wherein the shells ( 202 ) to an at least partially closed cable plug part protective cover ( 200 ) are closable together. Cable plug part protective cover according to the preceding claim, characterized in that at least a portion of the shells ( 202 ) of the cable plug part protective cover ( 200 ) are formed materially in one piece with each other. Cable plug part protective cover according to one of claims 6 or 7, characterized in that two associated shells ( 202 ) of the cable plug part protective cover ( 200 ) by means of mounting sections ( 230 ) are connectable to each other. Cable plug part protective cover according to one of the preceding claims, characterized in that an inner dimension of the cable plug part protective cover ( 200 ) is smaller in an unloaded state, as a corresponding outer dimension of the electrical cable connector ( 10 ), and / or an axial dimension of the cable plug cover ( 200 ) is smaller than a corresponding axial dimension of the electrical cable connector ( 10 ). Cable plug part protective cover according to one of the preceding claims, characterized in that the cable plug part protective cover ( 200 ) has on its outside a layer with an electrically conductive or a layer with an electrically insulating layer. Cable plug part protective cover according to one of the preceding claims, characterized in that the cable plug part protective cover ( 200 ) a current carrying layer ( 220 ) or a braided shield ( 220 ) which on the inside, inside and / or on the outside of the cable plug part protective cover ( 200 ) is provided. Electrical cable plug with external plug-in part shielding ( 110 ) for medium voltage applications, characterized in that the electrical cable plug ( 10 ) a cable plug-in protective cover ( 200 ) according to one of the preceding claims. Electrical cable plug part according to the preceding claim, characterized in that the outer plug part shield ( 110 ) as one on an electrically insulating plug-in part ( 100 ) applied, sprayed or sprayed on 110 ) is trained.

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