Insulator for tight shell of connector of end termination of electric cable

FIELD: electricity.

SUBSTANCE: invention relates to an insulator for a tight shell of a connector of end termination of an electric cable, which provides for electric connection between end termination of the cable (132, 134) and a domestic contact terminal. In accordance with the invention the insulator (100) comprises the first installation channel (102) to hold the domestic contact terminal (208) and the second assembly channel (104) to partially hold the cable (132, 134), besides, the second installation channel (104) has a contact area (112), in which in the mounted condition there is a cable tip located subject to electric contact impact, and a sealing area (114), which may become a support as capable of sealing of the end termination of the cable, and in which the central axis (118) of the sealing area (114) is located as shifted relative to the central axis (116) of the connection area (112).

EFFECT: higher tightness between a channel and a cable in a wide range of diameters of used cables.

18 cl, 23 dwg

 

The present invention relates to an insulator for the hermetic shell of the connector end fitting electric cable, which provides the electrical connection between the end fitting of the cable and consumer contact clip.

In particular, in connection with electrical switchgear or similar devices, it is often necessary to connect a single-pole domestic terminals, at least with single core cable so that the electrical connection was effectively electrically insulated and adequately protected from moisture. Components of household contact terminals intended for entry in the contact interaction, for example, to obtain a switchgear type SF6in this case we have a standard household insulators, which are isolated in the form of an external cone relative to the wall of the switchgear. Such external cone household component of the contact clip is described, for example, EN 50181.

Hermetically insulated suitable for use under water shell is guaranteed primarily due to the specially configured insulator, often specified as the adapter, which, on the one hand, contains domestic terminal, and on the other hand, the cable termination.

Below with reference to Fig-23 describes solator, the relevant prior art known, for example, in the form of a stand-alone spin-on cable connect type 630A RICS 10 kV and 20 V product line manufactured by TYCO Electronics Raychem.

Known insulator 200 has a first mounting channel 202 for keeping household contact clamp 208. The second mounting channel 204 is provided for insertion (introduction) cable 206. As is evident, in particular, from Fig, the cable 206 has end sealing 216 cable with cable lug 210, which is connected with household contact clip in the connections pane, in which the domestic terminal and terminal cable termination brought together. Open the protruding portion 212, which is closed by a plug 214 in the final assembled state, provides external access to the connections pane. In the first mounting channel 202 is being pushed with the possibility of sealing the outer cone 208 pin clamp and the second mounting channel 204 provides a seal directly on the terminal sealing 216 of the cable over a relatively large area. To absorb the forces acting on the axis of the cable in the transverse direction when the cable is installed in the insulator 200, provided by the annular recess 218 in which is inserted a flat metal insert 220. However, the known isolator 200 includes m is these serious shortcomings.

To guarantee the required mechanical strength is known, the insulator has a relatively thick wall that leads to the use of large quantities of polymeric material. In addition, a flat metal insert 220 contributes to the attenuation of mechanical forces and, incidentally, prevents slipping of the household contact clamping and positioning the plug-in connector. Flat box 220 additionally performs functions related to electricity transmission, but has the disadvantage that the manufacture of the insulator 200 is substantially more expensive and there is an additional current-limiting electrical resistance.

In addition to the cost of materials a considerable wall thickness leads to the necessity of the application of large forces during Assembly to push the end fitting 216 of the cable in the second mounting channel 204. Because the thick walls prevent adequate elastic deformation in the case of polymeric materials having high elasticity, known construction illustrated in Fig-23, is also unsuitable for a wide range of cable diameters, so that in each case it is necessary to provide a relatively large number of molds for injection of materials under pressure or, alternatively, have to use the appropriate adapters.

Closing protective cap 214, which is provided in the known construction of thermosetting material, and which has to be fastened by screwing into the open protruding portion 212, increases the number of required raw materials, because it is not derived from similar material, of which the insulator 200, and increases the complexity of the Assembly.

The object of the present invention is to provide an improved insulator for the hermetic shell of the connector end fitting electric cable, which meets all the requirements of the electrical connection between the end fitting of the cable medium and high voltage, and the contact clip, in respect of integrity (the degree of density and dielectric strength, but, on the other hand, is inexpensive to manufacture and relatively simple to assemble and provides the possibility of mounting a wider range of geometries and cross-sections of cables and cable lugs without the need for a transitional device or similar auxiliary means for modifying the geometry of the connector end fitting of the cable.

This goal is achieved by the independent claims. Preferred further development of the present invention are object of the dependent the of claims.

The present invention in this case is based on the basic concepts significant reduction (thickness) of the wall and guarantees the mechanical strength through various measures, even when using a wide range of cable diameters.

One significant aspect of the present invention is that the second mounting channel provided by the connecting area, which in the assembled state contains end cable termination, measurable electrical contact interaction, and the sealing region, which is located with the opportunity to seal against the end fitting of the cable, and the Central axis of the sealing region is offset from the Central axis of the connecting region. Through proper selection bias, which can also be interpreted as the eccentricity of the cylinder, which in each case form a connection region and a sealing region, it is possible to find the type of compromise between the deviation caused by the second mounting channel used the smallest and the largest cables (or cable lugs, or eccentricities).

In accordance with an additional aspect of the present invention the sealing region has a smaller inner diameter than the connecting region. E is th case, on the one hand, it is guaranteed that it lies with the ability to seal against the end fitting, while, on the other hand, creates sufficient space for arbitrary structures speaker cable lug.

For protection mounting channel from deformation during insertion (mounting) cable in a narrower sealing region, at least one stiffening rib installed on the outer wall of the sealing region along the direction of insertion of the cable.

In addition, a funnel-shaped flange can simplify the installation and to be connected with the ribs. In addition to prevent deformation during the insertion (mounting) and removing the cable this implementation also has the advantage of ease of capture to the installer with the introduction of end fitting, increasing, thus, the ease of handling, with the whole design.

In order to guarantee the mechanical strength of the connecting region even at a small thickness of the walls at the inner wall in the connection region can be additional ribs. They can move in the circumferential direction and along the axis of the cable and to have, for example, a lattice structure. Another feature significantly ribs is what prevents the occurrence of undesirable high tensions elektricheska the field.

In accordance with another aspect of the present invention at the point of transition between the first mounting channel and the connecting region is provided by a step in which the cable tip finds opposing retaining in assembled condition. This step, which can be interpreted as a limiting stop to prevent the slipping of the first mounting channel and the external cone household contact clip. This effect, which is highly undesirable, also known as the effect of emptying is just". In addition, with the exception of the disk can be reduced, the number of resistance.

In accordance with a preferred further development of the present invention instead of the stub of thermosetting material provided in the known insulators, the present invention provides an elastic cap (hereinafter also referred to as a protective cover). This secures the cover in an open protruding part via an elastic connection type protrusion-groove. The protrusion and the groove may be provided, for example, by means of recesses in the lid and a corresponding protrusion on the inner wall of the open extension.

Means of an elastic sealing lip, which may take the form of a flange resting its front surface is Yu on an outdoor focus, moreover, the cover can be installed tightly, without a clearance with the respective front surface and without any additional auxiliary means. In addition to the elastic sealing lip, the flange may also be provided with a chamfer to provide an elastic fit. Elastic cover can also be obtained from a similar material as the insulator, which reduces the complexity of manufacture and reduces the range of source materials.

For a better understanding of the present invention last described in more detail with reference to typical embodiments of illustrated in the accompanying drawings below. In this case, identical parts are provided with identical reference numbers and component names. In addition, the described and illustrated elements or combinations of elements from different embodiments can also make independent decisions with features of the invention, or decisions relevant to the present invention. In the accompanying drawings:

Figure 1 - cross section of the insulator corresponding to the present invention;

Figure 2 - isometric image taken in partial section, of an insulator;

Figure 3 is a detail cross-section 3-3 of figure 1;

4 is a detail 4 of Fig.;

5 is a detail view of the insulator illustrated in figure 1, in the direction of insertion of the cable;

6 is a cross section taken along the line 6-6 shown in Fig 1;

7 is a cross section taken along the line 7-7 shown in Fig 1;

Fig - item 8 of figure 1;

Figure 9 is an isometric overview of the insulator corresponding to the present invention;

Figure 10 is a rotated image of the insulator illustrated in Fig.9;

11 is a schematic representation of the second mounting channel to illustrate the eccentricity of the Central axis;

Fig - schematic representation of the insulator corresponding to the present invention intended for use with cables of different sizes;

Fig - detail design illustrated on Fig;

Fig - section of the first mounting channel to illustrate the forces encountered during installation (mounting) cable lug;

Fig is an isometric view of the cover insulator;

Fig - rotated isometric image of the cover illustrated in Fig;

Fig - section of the protective cover corresponding to the present invention;

Fig - item 18 images from Fig;

Fig illustrates details of the installed protective cover;

Fig is a top view of the protective cover corresponding to the present invention;

<> Fig first section known insulator;

Fig - second section of the known insulator, rotated by an angle of 90;

Fig - schematic representation of the known electrical connection between the end fitting of the cable and consumer contact clip, when using the isolator illustrated in Fig and Fig.

Below with reference to figure 1, which shows the cross section of the insulator 100, corresponding to the present invention in a preferred embodiment, provides a more detailed description of the present invention. The insulator includes a first mounting channel 102 for content (fit) household contact clip. The second mounting channel 104 serves to accommodate the cable, not shown on the accompanying drawing. The first mounting channel allows the seal essentially over region 102 relative to household contact clip.

Two essentially tubular channel combined in the connection region 108, which forms the actual electrical contact. The connection region 108 is accessible from the outside through open protruding part 110. A direct comparison with the previously known solution illustrated on Fig and Fig, first of all shows, in particular, significantly reduced the wall thickness of the insulator 100. By reducing the wall thickness in this case and drop the Oia flat metal insert, as will be described below, marked savings can be made in respect of the production facility 100, compared with the known insulators, and can be reduced electrical resistance of the transmission.

To a wide range of different diameters of cables could be used, taken significant positive steps in relation to the second mounting channel 104. On the other hand, the second mounting channel 104 is divided into the contact area 112 in which is located a cable tip, and a sealing area 114, which comes to rest directly against the insulating end fitting of the cable with seal (sealing). To achieve a compromise on the deviation of the second mounting channel 104 when the fit is particularly thin or very thick cables and different geometries cable lugs, the Central axis 116 and 118 of the connecting region 112 and the sealing area 114 are displaced relative to each other. Technical effects of this shift will be described in more detail below with reference to 11-13.

Internal diameters of different sizes connecting region 112 and the sealing area 114 makes it possible, furthermore, to easily place the eyelet, the diameter of which is considerably larger than the diameter of the cable, the second installation of the channel 104, and to reduce the force push. In this case, in particular, prevented damage to the insulator 100, caused by constant load and excessive elongation.

As is evident from the cross section shown in figure 1 together with item 8 (Fig), lattice edges 120, 121 stiffness are located in the connection region 112 on the inner side to impart sufficient mechanical strength to the second mounting channel 104, in spite of reduced wall thickness. The cross-sectional shape of the ribs 120 hardness is in this case essential for electric strength, because it is always necessary to prevent excessive electric fields and accumulated charges. Mowing and rounding edges were preferred.

In principle, the sealing area 114 may also be provided at its inner wall by means of sealing protrusions, which is always satisfied the relevant requirements in relation to forces encountered during Assembly. In addition, when designing the sealing area 114, attention must be paid to ensure that meets electrical requirements.

As is also apparent from a consideration of figure 1 and figure 2 together, in the peripheral sealing region 114 is provided a funnel-shaped mounting flange 122, which simplified the AET introduction end fitting of the cable. In the outer wall of the sealing region this mounting flange 122 is connected with the outer wall of the connecting region 112 all four edges 124 of rigidity. These external ribs 124 stiffness, which are essentially parallel to the direction of insertion of the cable, preventing deformation or displacement of the sealing area 114 inside with the introduction of cable in the direction of arrow 126. In addition, the ribs 124, which is especially clearly visible in Fig.7-10, also result in the simplification of the grip on the connector part of the cable, as they provide in-depth grips for a user to grip.

More advantages of the insulator 100, corresponding to the present invention, is a restrictive emphasis 128 provided in the connection region. As will be described in more detail in connection with Fig, this restrictive emphasis serves to prevent the effect of emptying is just", and in this case replaces the flat metal box, which is used in the known insulators. In this case also reduces the number of electrical resistance.

Item 4 (figure 4) illustrates the gripping protrusion 130, which is provided on the outside protruding part 110 and, as will be described below with reference to Fig-20, communicates with the corresponding groove in the flexible protective cover to mount the Oia cover to an open extension.

The main aspects and embodiments of the present invention will be described below with reference to the detailed view shown in 11 to 20. First of all with reference to 11-13 will be described aspect of the eccentricity of the sealing area 114, related to the connection region 112.

As is obvious from these accompanying drawings, due to the offset 136 in accordance with the present invention, the Central axes 116, 118 of the connecting region 112 and the sealing area 114, respectively, two essentially cylindrical region, which can also be conical, are eccentric relative to each other. This eccentricity allows the best possible fit cables of different cross-section, in particular, with the standard civil cable lugs with unilateral contact and/or securing the wires, for example EXRM-1235 production TYCO Electronics Raychem GmbH. As is evident from Fig and the part 13 of Fig, the sealing area 114 should be bent relatively far in the direction of the first mounting channel 102 when the fit of the cable 134 with a relatively small cross-section and, thus, enter (to make) a relatively large force in the connecting region (connecting area) 108. Since there shifted the e 136, a much smaller deviation sealing area 114 in the direction of the first mounting channel 102 is achieved in the case of particularly thin cables, while the fit thick cables remains hassle-free due to the expansion of the sealing region in the direction of the open protruding part 110. On Fig and Fig illustrates the contours of the end fitting of the cable in one case for cable 132 large diameter, and in one case for cable 134 small diameter.

An additional significant aspect of the insulator 100, corresponding to the present invention will be described below with reference to Fig. The item shown in Fig is the insulator corresponding to the present invention, fitted on the outer cone 208 household contact clip. Since the insulator 100, corresponding to the present invention does not contain a flat metal insert, the relevant prior art in the area of the first mounting channel 102 raises the risk of emptying is just" as a result of the power of the tests shown in Fig. Since the insulator extends in the direction shown by arrows 138 and the outer cone 208 household contact clamp has an inclined area in the direction 140 occurs the movement of the slide. Restrictive emphasis 128 corresponding to the present invention, provides protistas the existing retention 142 against the cable lug and prevents slipping in the direction 140. In this case, the effect of emptying is just as" may, however, be reliably prevented, in spite of cheaper production facility.

Now with reference to Fig-20 will be described in detail protective cover 144. A significant element of the cover plate 144 is that it has a mushroom-shaped design, so that it, with one hand, apply pressure to the inside of the inner wall of the open protruding part 110 and, in doing so, snaps gripping protrusion 130 on the outside protruding part 110 by means of a gripping groove 146. Mounting chamfer 148 provides a simplified installation of the protective cover 144. The snap connection between the gripping protrusion 130 and gripping groove 146 allows secure a certain fit. The ratio of the diameters of the cover and insulator in the region 110 should be selected such that the separator surface was electrically tight and waterproof. In addition, the internal location of the cover 144 compared with external cover provides the opportunity to reduce the consumption of material and structural volume. In addition, dividing the surface tends to decrease in the area. Tilt 156, shown in Fig, provides correction of admission to resolve the details of the elastic accommodation of one another.

However, it also is about, protective cover 144 also has francaviglia protrusion 150, which is pressed against the end surface 152 open the protruding part 110. As illustrated in Fig, when the fit is guaranteed installing the cover in the absence of the gap.

On Fig shows a top view of the protective cover 144. In this case, in particular, shows the supporting lug 154, which simplifies the operator to remove the cover.

In short, the insulator illustrated in figure 1-10 includes, among other things, the following significant improvements compared with the known construction is illustrated in Fig-23.

Reduced wall thickness in combination with the use of additional reinforcement ribs on the inner surface of the second mounting channel simplifies the fit, while at the same time the mechanical strength. Electrical requirements are met by the chamfer (bevel)that the internal ribs form with the longitudinal axis of the mounting channel. Since the internal diameter of the connecting region 112 may be selected sufficiently large, cable lugs with a relatively large diameter can also be used (placed) without strain insulator or with only minor stretching of the insulator in the upper pane.

The actual seal in combination with the ass end is the CMC of the cable is effected only in the sealing area 114 with a reduced inner diameter. In this area on the inner wall can also be provided for additional sealing ledges.

The insertion (mounting) cable can be simplified by means of the funnel-shaped flange on the end of the sealing area. In addition, a funnel-shaped flange reinforced by four longitudinal ribs on the outer side, which, however, do not contradict the requirements extracted from the mold in the production process, that is, for example, do not create the need pagnutti of the mold.

Cap for closing the open protruding part, which is formed in known constructions of thermosetting polymer material, such as epoxy resin, is replaced in the present invention a protective cover 144 received in the process of injection molding. This protective cover can be obtained from the same material as the rest of the isolator 100, for example of a flexible silicone elastomer.

The protective cover is fixed to the insulator by means of a snap connection for easy removal equipped with auxiliary lug 154. In addition, the protective cover may be secured to the insulator by means of the tape, obtained by casting, for example, in place to prevent loss.

The dimensions of the insulator corresponding to the present invention, is significantly reduced by sravnenie the known solutions, because instead of the stub used only a relatively short protective cover 144, flat metal insert is no longer necessary and the connecting area for cable lug became shorter. Due to a shorter open the protruding part 110, it is also possible to carry out work on the electrical connection with the ordinary tools and the reduced internal diameter, while at the same time equally good availability.

In this case, the cost of the insulator is significantly reduced, while the production time is shortened. Forces arising as at the insertion (mounting) cable and pushing the first mounting channel on the outer cone household contact clamp, steel less. A relatively wide range of cable diameters can be covered by one and the same insulator. The sealing properties of the insulator corresponding to the present invention, better known properties of insulators. The fact that there is no need to install a flat metal insert during injection molding, reduces the cost and complexity of production and prevents additional surfaces of the electrical contact interaction. Finally, the insulator corresponding to the present invention, himself more p is OSTO adapts to any bending of the cable, which may take place.

LIST of REFERENCE NUMBERS

200 - known insulator

202 - the first mounting channel (for household contact clip)

204 - the second mounting channel (cable)

206 - cable

208 - the outer cone household contact clip

210 - cable tip

212 - open the protruding portion

214 - cap

216 - end cable termination

218 - circular recess

220 - flat metal insert

100 - insulator corresponding to the present invention

102 - the first mounting channel (for household contact clip)

104 - the second mounting channel (cable)

108 - connecting region

110 - open the protruding portion

112 - connecting region

114 - o-scope

116 Central axis of the connecting region

118 - the Central axis of the sealing region

120 - internal ribs (transverse)

121 - internal ribs (longitudinal)

122 - funnel-shaped mounting flange

124 - external ribs

126 - direction of insertion of the cable

128 - restrictive emphasis

130 - gripping ledge on the outside protruding part

132 - circuit cable with a large cross-section

134 - the contours of the cable with a small cross-section

136 - the offset of the Central axis

138 - extension

140 - movement skidding pad is of

142 - counter hold, provide restrictive focus

144 - protective cover

146 - gripping groove

148 installation chamfer

150 - francaviglia ledge

152 - end surface of the open extension

154 auxiliary eyelet

156 - slope

1. The insulating adapter for leak protection connector end fitting electric cable, which provides the electrical connection between the end fitting of the cable (132, 134) and household contact clip (208),
moreover, the insulating adapter (100) has a first mounting channel (102) to accommodate household contact clamp (208) and the second mounting channel (104) to partially accommodate the end fitting (132, 134) cable
in which the second mounting channel (104) has a contact area (112), which in assembled condition contained measurable electrical contact engagement with a cable lug, and a sealing region (114), which can support with sealing end fitting cable
and in which the Central axis (118) sealing region (114) is located offset from the Central axis (116) of the connecting region (112).

2. The insulating adapter according to claim 1, in which the sealing region (114) has an internal diameter that is smaller than the diameter of the connecting region (112).

3. Isolated the store the adapter according to claim 1 or 2, in which the sealing region (114) has a cylindrical or conical shape.

4. The insulating adapter according to claim 1, in which at least one edge (124) of rigidity along the direction (126) the introduction of the cable is attached to the outer wall of the sealing region (114).

5. The insulating adapter according to claim 1, in which a funnel-shaped mounting flange (122) is formed by injection molding on the terminal area of the sealing region (114).

6. The insulating adapter according to claim 1, in which at least one edge (121) of rigidity along the direction (126) the introduction of the cable, obtained by injection molding on the inner wall of the connecting region (112).

7. The insulating adapter according to claim 1, in which at least one edge (120) hardness, passing transversely to the direction (126) the introduction of the cable is attached to the inner wall of the connecting region(112).

8. The insulating adapter according to claim 1, in which the first mounting channel (102) and the second mounting channel (104) are found in the connective region (108), in which the domestic terminal and an end sealing cable can be connected together, and in which the connecting region accessible from the outside through open protruding part (110).

9. Isolating the adapter of claim 8, further containing a protective cover (144) for closing the open protruding part (110).

10. From yuushi adapter according to claim 9, in which the protective cover (144), when installed, is at least partially open the protruding portion (110).

11. The insulating adapter according to claim 9 or 10, in which the protective cover includes an annular flange (150), which, when the cover is installed tight to the end region (152) at the end surface of the open protruding part (110).

12. The insulating adapter according to claim 11, in which the end region (152) has a slope of (156) to compensate for tolerance.

13. The insulating adapter according to claim 9, in which the protective cover (144) has at least one encircling groove (146), which interacts with at least one respective gripping protrusion (130) on the outside protruding part (110) for mounting (fixing) cover plate (144).

14. The insulating adapter according to claim 9, in which the protective cover (144) has a supporting lug (154) for easy removal by the operator.

15. The insulating adapter according to claim 9, in which the protective cover (144) has an external diameter which is adapted to the inner diameter of the open protruding part (110) to form electrically sealed waterproof surface section.

16. The insulating adapter according to claim 1, which is obtained from the elastomer or thermoplastic elastomer, preferably of silicone (silicone) rubber, HTV silicone, LSR silicone rubber on onomatopoiea ethylene, propylene and diene monomer (EPDM), thermoplastic elastomer (TPE) or RTV.

17. The insulating adapter according to claim 1, in which a restrictive emphasis (128) is formed by injection molding on the peripheral area of the first mounting channel (102), and in a restrictive way (128), termination of the cable in the established state rests on insulating adapter transverse direction (126) the introduction of cable (132, 134).

18. The insulating adapter on 17, which is obtained without a flat metal insert.



 

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1 cl, 1 dwg

FIELD: electrical engineering; high-voltage connectors for power distribution systems.

SUBSTANCE: connector shroud with through passage has first layer abutting against this passage, second layer enclosing first one and made of thermoplastic elastomer (TPE insulating material), and third layer enclosing second one and made of low-conductivity material (below 108 Ohm-cm) which can be also made of TPE material. TPE layers are press-fitted one on top of other.

EFFECT: facilitated manufacture, enhanced electrical characteristics.

23 cl, 13 dwg

Electric connector // 2306645

FIELD: electrical engineering.

SUBSTANCE: proposed electric connector has corrugated shielding member in the form of flexible bellows tightly closed on both ends with shrouds provided with through holes forming common space with inner cavity of bellows filled with mixture of neutrally reduced gases wherein electric conductor in the form of stranded wire is disposed to protect it against oxidation in chemically active medium at enhanced temperature, its conservative length being placed within bellows varying its length and shape when contact members are moving. Stranded wire ends are compressed to form washers with holes which are tightly secured by means of contact members within shrouds. Both ends of stranded wire are passed through shroud holes and secured therein by molding to allow for gas passage through space between wire strands.

EFFECT: enhanced resistance of connector to electric loads in chemically active media at enhanced temperature.

3 cl, 3 dwg

FIELD: electricity.

SUBSTANCE: electric connecting element (1) for connection of at least a conductor (6) with a circuit board (10) comprises a body (2), at least one gripping connector (5) for the conductor (6), and also at least two connecting terminals (3) for a connection with the circuit board (10), preferably the one suitable for soldering. The body (2) on the lower side (2a) that faces the circuit board (10) in the mounting position has at least one protruding separating element (4) of an insulating material, which at least on sections between the connecting terminals (3) and in the mounting position passes through the circuit board (10). At the same time even in case there is a distance between the connecting terminals (3), which is less than prescribed by according standards for safe gaps, a sufficient protection is ensured against a hazard of breakthrough between the energised connecting terminals (3).

EFFECT: realisation of an electric connecting element with smaller dimensions.

19 cl, 8 dwg

FIELD: electrical engineering.

SUBSTANCE: plug-in HV input (D) serves for connection of a current lead to the HV installation component (T) filled with an insulating medium and encapsulated inside a metal housing. The input is designed to be rotationally symmetrical relative to axis (A) and contains a centrally position current lead (10), a field control device and (enveloping the current lead) an insulator (20) with a tapering section (21) that, after the input (D) insertion into the plug-in part (60) covering the component (T) in a manner impermeable for the insulating medium, dielectrically strengthens the gap (F) positioned between the plug-in part (60) insulating bushing (64) and the insulator (21) tapering section. The field control device is designed as a capacitor roll (40), the capacitor roll (40) containing capacitor armatures (41) electrically insulated from each other, retained (in the radial direction) by an insulating film (42) with a gap relative to each other and embedded into the insulator (20) by way of the capacitor roll (40) sealing in consolidated polymer mass; the capacitor armatures (41) pass through the installation flange (30) towards the insulator (20) tapering section (21).

EFFECT: creation of an input of comparatively simple and robust design, applicable for efficient control of active electric field in case of the input operating at very high operational voltages.

13 cl, 3 dwg

FIELD: electricity.

SUBSTANCE: connecting surfaces (12) of a connecting electrode (10) have flat shape. Connecting devices (12, 12') comprise a conducting insert (24) in a crushable insulating elastomer (14), cast and coated with a screen (20). Connecting surfaces (26, 28) of conducting inserts (24) are arranged with displacement relative to connecting surfaces (16, 18) of an insulating support (14). After the connection has been made, insulating surfaces (16, 16') contact with each other, and compression is carried out, making it possible to implement an air impermeable connection, at the same time conducting surfaces (26, 26') enter in contact with each other. The unit is in compressed condition with the help of a central screw (50), which is preferably connected with a locking device (52), for the connecting surface (18), not used for electric connection.

EFFECT: simplified connection between electric devices, higher speed, flexibility and reliability of a connection due to simplification of an allowance for terminals arrangement, and provides for levelling by arrangement of connected poles.

19 cl, 4 dwg

Electrical element // 2524379

FIELD: electricity.

SUBSTANCE: electrical element includes two or more current-conducting elements, through which current flows, and an insulator retaining the corresponding current-conducting elements in an insulated state. Resistive body (13) is created in a circumferential direction of at least one of current-conducting elements (11) on surface of insulator (12). Resistive body (13) distributes voltage applied to surface of insulator (12) between two adjacent current-conducting elements (11), and as a result, difference of potentials, which is distributed along the surface of insulator (12), becomes equal to voltage of the beginning of the charge or is lower than it.

EFFECT: improving reliability of electrical element insulation.

14 cl, 11 dwg

FIELD: electricity.

SUBSTANCE: invention relates to an insulator for a tight shell of a connector of end termination of an electric cable, which provides for electric connection between end termination of the cable (132, 134) and a domestic contact terminal. In accordance with the invention the insulator (100) comprises the first installation channel (102) to hold the domestic contact terminal (208) and the second assembly channel (104) to partially hold the cable (132, 134), besides, the second installation channel (104) has a contact area (112), in which in the mounted condition there is a cable tip located subject to electric contact impact, and a sealing area (114), which may become a support as capable of sealing of the end termination of the cable, and in which the central axis (118) of the sealing area (114) is located as shifted relative to the central axis (116) of the connection area (112).

EFFECT: higher tightness between a channel and a cable in a wide range of diameters of used cables.

18 cl, 23 dwg

FIELD: electricity.

SUBSTANCE: through connector (100) extends partially or completely through the hole in a wall (202) of underwater containers (200). The connector contains a conductive rod (102), with a conic part (104) with an external diameter increasing in a longitudinal direction (108), and also electrical insulator (136), with a conic part (138) with an internal surface (140), directed towards the conic part (104) of the rod, and with an external surface (142), opposing the internal surface (140), directed towards the conic part (104) of the rod. The outer diameter (144) of the surface (142) of the conic part (138) of the insulator is increased in a longitudinal direction (108), which passes from internal space (204) of the container towards external space (206).

EFFECT: improvement of leakproofness of connection and prevention of the connector destruction as a result of significant pressure drops between external and internal spaces of the container.

19 cl, 4 dwg

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