EP1553662A1 - Cabel connector - Google Patents

Abstract

Shell clamping mounts (SCM) (7) form a retaining space (RS) for a main conductor cable (MCC) (2) and attach around the MCC during its operation. A contact element (CE) (27) in a CE casing (35) fits in a SCM open on a side opposite the SCM side. The CE has rows of first contact teeth (29) jutting towards the RS. A clamping device (39) interlinks the SCM.

Description

The present invention relates to a cable terminal for connecting Branch conductor to main conductor of a main conductor of a power supply, after the preamble of claim 1.

It should be noted in the beginning that under main conductor is a cable harness of a main conductor cable is understood, which may have a plurality of main conductors. A main conductor points in usually a soul or vein and isolation on. The same applies to the branch conductor.

From DE 39 33 609 A1 discloses a cable branch terminal for connecting branch conductor known to the main conductor, with at least two half-shelled, a receiving space of the main circuit cable forming clamping frames around the main conductor cable are attachable and enclose this in the operating state. There are four Provided contact elements, each received in a contact element housing which in turn is arranged in a clamping frame and on which, the clamping frame side opposite sides, is open. Each contact element has several rows of first contact teeth, which are in the direction of receiving space of the main circuit cable.

By means of two clamping screws, the clamping frames are interconnected and when screwing the penetration of the first contact teeth in the Soul of the associated main conductor of the main cable causes.

To connect the main conductor with the branch conductor, the contact element a bore into which the branch conductor can be introduced. To set the branch conductor in the contact element is according to DE 39 33 609 A1 a clamping screw provided, which can be operated from the outside of the cable connection terminal is and holds the branch conductor in the bore of the contact element.

The cable terminal of this prior art has a number of disadvantages on. Each branch conductor to be inserted must first be stripped to prevent to allow electrical contact with the contact element. The introduction the branch conductor on site at the site is not easy, due to the low Tolerances between branch conductor and bore of the contact element as well bending and crossing out the veins, which is also a corresponding time requires until the operator inserts the branch conductor into the hole Has.

Thereafter, the branch conductor by means of the clamping screw firmly in the clamping frame before fixing this around the main conductor cable with its main conductors is arranged. By fixing the arrangement of the clamping frame is relative unwieldy, since he is already rigidly connected to the branch conductors.

The two clamp frames are first placed around the main conductor cable and light fixed by the screws, without the contact elements through the core insulation bump. The clamping frame are always arranged so that the parting plane the two clamping frames are substantially horizontal, which leads to that the clamping screws of the lower two branch conductors can only be actuated from below are, so from the side of the soil ago, in which the main cable is located. This continues to lead to considerable assembly difficulties.

Not least because of safety precautions, the branch conductors must always be firmly secured in their contact elements before penetration of the teeth the contact element is made in the main conductor, which is the immediate power connection causes.

In order to at least partially overcome the aforementioned disadvantages, has been according to Proposed EP 0 769 825 A1, as a fastener of the branch conductor in Contact element to use a spring element, wherein the spring devices in dig the previously stripped branch conductor, and the branch conductor to a Prevent removal. The problem here is the extremely elaborate design and expensive choice of material of the spring elements.

The present invention is therefore based on the object, a cable terminal for connecting branch conductor to main conductor of a power supply to create the above-mentioned disadvantages of the prior art overcomes, and the extremely simple and quick installation of the cable terminal allows while maintaining the necessary mounting security.

This object is solved by the features of patent claim 1.

The cable connection terminal according to the invention is characterized in that the Contact element is slidably received in the contact element housing, between the contact element and contact element housing a receiving space of the Branch conductor is provided, and that the contact element at least one row of second contact teeth, which penetrate into the associated branch conductor serve, which can be introduced into the receiving space of the branch conductor.

This ensures that a relatively large receiving space of the branch conductor can be generated by corresponding displacement of the contact element, which allows easy and fast insertion of the branch conductor in the contact element. Furthermore, the great advantage is achieved that a previous stripping the branch conductor is not necessary, since by means of the second contact teeth penetration the contact element in the soul of the branch conductor by its isolation becomes possible. Also visible is the complex attaching the branch conductor in the contact element by means of partially extremely unfavorable arranged fastening screws completely avoided.

Advantageously, the contact element has a plurality of rows of second contact teeth on. This leads on the one hand to a secure electrical contact between Contact element and branch conductor and on the other hand is an adaptation to different Given diameter of branch conductors with a contact element.

Characterized in that one, preferably both clamping frame of two relatively movable Clamping frame segments is / are formed, is advantageously achieved that in a cable terminal according to the invention different Main conductor or main conductor with different (wire) cross sections connected can be. In addition, the assembly is facilitated, as by means of Clamping device, such as a clamping screw for two to be connected Clamp frame segments, the segments separated from the other two with each other can be jammed. As a result, bending forces and thus bending stresses the clamping frame and the associated elements avoided.

The resulting mobility of the clamping frame segments allows furthermore advantageously contacting in a very large cross-sectional area in both the branch cables and the main cables with their Executives.

Be wedges between the upper and lower main conductors, insulating material arranged, an effective clamping of the main conductor can be done. When penetrating The first contact teeth prevent teeth or ribs Wedges moving and dodging the respective main ladder.

Furthermore, it is advantageous that between the horizontally arranged main conductors a upper and a lower vertical wedge, each with different thicknesses provided is. This ensures that the strong increase of the vertical wedge smaller main conductor cross sections are pressed in the direction of the contact element and thus enable a secure contact.

A special adaptation to the different cross sections of the main conductors is also made possible by the fact that the vertical wedges are towards their end in the direction Rejuvenate the center of the main conductor cable's receiving space. this makes possible a good introduction of the vertical parts between the main conductors.

Furthermore, it is advantageous that the upper vertical wedge offset by 180 ° to the lower vertical wedge is arranged. This advantageously leads to the fact that the vertical Wedges can move past each other, and thus adapt to small Core cross sections of the main conductor is created.

Furthermore, it is advantageous that each vertical wedge a wedge element and a base element having a stop surface at the front end of the wedge member and a stop surface are provided on the base member. This leads advantageously to ensure that a defined end position when clamping the clamping frame is generated and thus a secure cable connection terminal is created.

Advantageously, the contact element housing against a stop surface the branch conductor on. This can for example be curved, and thus forms a good counter surface when pressing the branch conductor against it. simultaneously a lateral movement away the branch conductor is avoided.

To prevent that due to excessive force transmission of the contact element the branch conductor of this or the contact element is damaged, are limiting devices the power transmission from the contact element to the branch head provided. Advantageously, the contact element guide walls on, whose end faces serve as stop surfaces. These can be advantageous with stop devices provided in the contact element housing interact, which serve to limit the movement of the contact element and cooperate with the stop surface of the guide walls of the contact element.

Finally, advantageously limiting devices of Power transmission provided by the contact element on the respective main conductor be.

Fig. 1

eine schematische Prinzipdarstellung der erfindungsgemäßen Kabelanschlußklemme in zwei unterschiedlichen Montagestellungen bei einer ersten Größe von Hauptleitern;

Fig. 2

eine Ansicht eines horizontalen Zahnkeils;

Fig. 3

eine Ansicht von links auf den Zahnkeil von Fig. 2;

Fig. 4

eine Ansicht von oben auf den Zahnkeil gemäß Fig. 2;

Fig. 5

eine Darstellung eine horizontalen Zahnkeils, der mit dem Zahnkeil von Fig. 2 zusammenwirkt;

Fig. 6 und 7

analoge Figuren zu den Figuren 3 und 4;

Fig. 8

eine Stirnansicht einer Keilverlängerung und Lagerung eines Klemmrahmensegments;

Fig. 9

eine Seitenansicht der vertikalen Keilverlängerung von Fig. 8;

Fig. 10

eine Ansicht von oben auf die vertikale Keilverlängerung von Fig. 8;

Fig. 11

eine Ansicht eines vertikalen Keils mit Führungsnut für die Keilverlängerung;

Fig. 12

eine Seitenansicht des vertikalen Keils von Fig. 11;

Fig. 13

eine Ansicht von oben auf den vertikalen Keil von Fig. 11;

Fig. 14

eine Ansicht eines Kontaktelement-Gehäuses mit Anschlageinrichtungen;

Fig. 15

eine Seitenansicht des Kontaktelement-Gehäuses von Fig. 14;

Fig. 16

eine Ansicht von oben auf das Kontaktelement-Gehäuse;

Fig. 17

eine Ansicht eines Kontaktelements auf dessen Stirnseite;

Fig. 18

eine Seitenansicht des Kontaktelements von Fig. 17;

Fig. 19

eine Ansicht von oben auf das Kontaktelement von Fig. 17;

Fig. 20

eine Ansicht des oberen rechten Klemmrahmensegments von Fig. 1;

Fig. 21

eine Seitenansicht auf das Klemmrahmensegment von Fig. 20;

Fig. 22

eine Ansicht von oben auf das Klemmrahmensegment von Fig. 20;

Fig. 23

eine schematische Prinzipdarstellung der erfindungsgemäßen Kabelanschlußklemme in zwei unterschiedlichen Montagestellungen bei einer zweiten gegenüber der ersten Größe geringeren Größe von Hauptleitern und Abzweigleitern;

Fig. 24

eine Seitenansicht auf die Kabelanschlußklemme von Fig. 23; und

Fig. 25

eine Ansicht von oben auf die Kabelanschlußklemme von Fig. 23.

Further details, features and advantages of the present invention will become apparent from the following description with reference to the drawings. It shows:

Fig. 1

a schematic diagram of the cable connection terminal according to the invention in two different mounting positions with a first size of main conductors;

Fig. 2

a view of a horizontal dental wedge;

Fig. 3

a view from the left on the tooth wedge of Fig. 2;

Fig. 4

a top view of the tooth wedge of FIG. 2;

Fig. 5

a representation of a horizontal tooth wedge, which cooperates with the tooth wedge of Fig. 2;

6 and 7

analogous figures to Figures 3 and 4;

Fig. 8

an end view of a wedge extension and storage of a clamping frame segment;

Fig. 9

a side view of the vertical wedge extension of Fig. 8;

Fig. 10

a top view of the vertical wedge extension of Fig. 8;

Fig. 11

a view of a vertical wedge with guide groove for the wedge extension;

Fig. 12

a side view of the vertical wedge of Fig. 11;

Fig. 13

a top view of the vertical wedge of Fig. 11;

Fig. 14

a view of a contact element housing with stop devices;

Fig. 15

a side view of the contact element housing of Fig. 14;

Fig. 16

a top view of the contact element housing;

Fig. 17

a view of a contact element on the end face thereof;

Fig. 18

a side view of the contact element of Fig. 17;

Fig. 19

a top view of the contact element of Fig. 17;

Fig. 20

a view of the upper right clamping frame segment of Fig. 1;

Fig. 21

a side view of the clamping frame segment of Fig. 20;

Fig. 22

a top view of the clamping frame segment of Fig. 20;

Fig. 23

a schematic diagram of the cable connection terminal according to the invention in two different mounting positions at a second compared to the first size smaller size of main conductors and branch conductors;

Fig. 24

a side view of the cable terminal of Fig. 23; and

Fig. 25

a top view of the cable terminal of Fig. 23.

In the figures, like elements are designated by the same reference numerals.

In Fig. 1, the basic structure of a cable connection terminal according to the invention 1 shown in two different mounting states. The cable connection terminal 1 is used to connect branch conductor 3 to a main conductor cable 2 with four main conductors 5. As can be seen from Fig. 1, each branch conductor 3 has a core or wire 4 and a sheath insulating layer 6. Each main conductor 5 has also a core or core 8 and an insulating layer 10.

The cable terminal 1 has two clamping frame 7, each in clamping frame segments 9, 11 and 13, 15 are divided. The clamping frame segments 9 and 11 are via a vertical wedge extension 17 and the clamping frame segments 13 and 15 connected via a vertical wedge extension 19 with each other and relatively movable to each other. The vertical wedge extensions 17, 19 become described in detail below. The clamping frame 7 enclose in the assembled Condition a receiving space 21 for the main conductor. 5

As shown in Fig. 1, the main conductor cable 2 consists of four main conductors 5. Two are each arranged in the horizontal direction side by side main conductor 5 separated from each other by a vertical wedge 23. The embodiment of the vertical Keils will be described below. Between the vertically arranged Pair of main conductors 5 are two horizontal wedges formed as tooth wedges 25 and 26 are arranged, which are also described in more detail below.

To connect the main conductor 5 of the main conductor cable 2 are contact elements 27th intended. The contact elements 27 have first contact teeth 29 and second Contact teeth 31 on. Both the first contact teeth 29 and the second Contact teeth 31 may be formed as pyramidal teeth, the row-shaped are arranged. Such an embodiment is the expert known in the art.

The contact element 27 also has guide walls 33 which serve as a guide of the contact element 27 in a contact element housing 35 serve. The contact element 27 is slidably mounted in the contact element housing 35. in the illustrated example trap according to FIG. 1 are clamping devices 39 in the form of Threaded screws 40 are provided, for example, an external thread 41, a Screw head 42 may have a hexagon socket 43.

2, one of the horizontal wedges 25 is shown. The horizontal wedge 25 has a base body 45, the tooth-shaped or rib-shaped on both sides Projections 46 has. These are particularly well visible in Fig. 3. To the outside Towards the end, the horizontal wedge 25, as shown particularly clearly in FIG. 4, a widening area 47, which serves one on the horizontal Wedge 25 attached main conductor to prevent a slip beyond. Moreover, the horizontal wedge 25 serves to drive into the spread Main conductor 5 before attaching the clamping frame. 7

In an inwardly directed end region 48, the horizontal wedge 25 has a Notch 49 on. Furthermore, the end region 48 has a groove-shaped recess 50 on, which serves with the horizontal part, shown in more detail in Figures 5 to 7 is to cooperate. As can be seen from Fig. 5, the horizontal wedge 26 has a similar configuration as the horizontal wedge 25. He also exists from a main body 51, on both sides of a series of tooth-shaped projections 52 has. Furthermore, an enlarging holding region 53 is also provided provided similar to that holding portion 47 and an end portion 53 has one of Notch 49 corresponding notch 54 on.

The horizontal wedge 26 further has in its end portion 53 a C-shaped Connecting portion 55 which serves, in the mounted state in the groove-shaped Incision 50 of the horizontal wedge 25 to come to rest. Through the notch 49 of the horizontal wedge 25 and the recess or notch 54 of the horizontal wedge 26 creates a passage area for the vertical wedges 23, as can be seen from Fig. 1. The tooth-shaped projections 46 and 52 serve the position assurance of the respective main conductor core 5, wherein the tooth-shaped Projections 46 and 52 easily penetrate into the insulating jacket 10 of the main conductor 5 and thus prevent it from slipping in the cable connection terminal.

In Figures 8 to 10, the vertical wedge extension 17 is shown. This is in its structure identical to the vertical wedge extension 19. The vertical wedge extension 17 has a support portion 57 and a connection portion 59 on. The storage section 57 has, as shown particularly in FIG. 10, two dovetail-shaped storage notches 61 on each other are separated by a partition wall 62. The dovetail-shaped notches 61 serve to receive corresponding dovetail-shaped Connecting portions of the associated clamping frame segment 9, 11, 13 or 15, as will be described in more detail later.

The wall-shaped planar connecting portion 59 serves as a connecting portion to one of the associated vertical wedges 23, now closer will be described with reference to Figures 11 to 13.

The vertical wedges 23 have a base portion 65 which is a slot-shaped Notch 66 has. The slot-shaped notch 66 in the base portion 65 serves for receiving the connecting portion 59 of the vertical wedge extension 17th or 19.

As can be seen from FIG. 11, a wedge-shaped closing at the base portion 65 Projection portion 67, whose thickness or thickness relative to the base portion 65 is reduced. Its width is, as shown in FIG. 12, opposite to the width of the base portion 65 is reduced to about half of its width. At the base section 65 opposite end 69 is a wedge-shaped taper 70 provided, which opens into a front stop surface 71. The base section 65 has a stop surface 68. The two vertical wedges 23 are in the cable connection terminal arranged offset to one another so that the two wedge-shaped Projection portions 67 can move past each other until the front Stop surface 71 of a wedge hits the abutment surface 68 of the other wedge. Thereby, a limitation of the movement of the vertical wedges 23 to each other too created, and thus a limitation of the penetration depth of the first contact teeth 29 in the respective associated main conductor. 5

FIGS. 14 to 16 show a contact element housing 35. The contact element housing has a base portion 73 and two protruding therefrom Wall sections 74 and 75, so that a total of a substantially U-shaped Cross-sectional shape of the contact element housing 35 results. The base section 73 has a stop surface 76, which, as shown in Fig. 14, curved is trained. This stop surface serves as shown in Fig. 1, to the plant the branch conductor 3. On both sides of the stop surface are limiting devices 77, which serves as a limitation of the penetration depth of the contact element 27, the closer with reference to Figures 17 to 19 further is described below. The limiting devices 77 are as cuboid Protrusions formed integrally with the contact element housing formed of plastic 35 are connected via a first predetermined breaking line 80. Furthermore is a second predetermined breaking line 82 is provided. Depending on how deep the contact element, depending on the diameter of the associated branch conductor in this is allowed to penetrate, the limiting means are as shown in Fig. 1 and 14 leave or at the second predetermined breaking line 82 partially canceled or by canceling at the first predetermined breaking line 80 completely removed, such as from the still further explained Fig. 23 can be seen.

The wall section 75 has a taper 78 in its front end region, which serves as a contact surface against the associated main conductor 5, when the Clamping frame 7 together with the contact element housing 35 in the clamping direction is moved.

From Fig. 14 is further seen that the contact element housing 35 chastise one Corner portion 79 which, the associated clamping frame segment 11, as shown in FIG. 1, adapted.

FIGS. 17 to 19 show a contact element 27. The contact element 27 has a base body 81, on which the first contact teeth 29 and the second Contact teeth 31 are arranged. Furthermore, the contact element 27 guide walls 83, which in turn each have a stop surface 84. The stop surfaces 84 serve as a limitation of the penetration of the contact element 27 in the branch conductor 3 and act with the limiting sections 27 of Contact element housing 35 together.

FIGS. 20 to 22 show the clamping frame segment 11 or 9. The Clamping frame segment 11 has a frame portion 85 with two in the right Angle to each other extending frame legs 86 and 87. The two frame legs 86 and 87 are above an inclined intermediate portion 89th connected with each other. On the frame leg 87 is at the intermediate portion 89 opposite end of a dovetail-shaped connecting portion 91 arranged, as can be seen in particular clearly from Fig. 22. This dovetail-shaped connecting portion is engaged with the dovetail-shaped notch 61 of the vertical wedge extension 17 or 19 so that the clamping frame segment 11 with respect to the vertical wedge extension 17 is movable.

At the intermediate portion 89 opposite end portion of the frame leg 86, a clamping device portion 93 is further provided, which has a bore 95, which serves to receive the clamping devices 39.

Furthermore, at the opposite end of the connecting portion 91 the frame leg 86 a guide and stop portion 97 arranged the with a corresponding notch in the opposite frame legs 99 of the clamping frame segment 15 can come into engagement, as shown in FIG. 1 seen. Through the guide and stop portion 97 on the clamping frame segment 11 or 9 with the corresponding notches or cuts 101 in the frame leg 99 of the associated clamping frame segments 15 and 13th a limiting device is provided, such that after a stop of the guiding and Anschlagabschitts 97 in the recess 101 further penetration of the first Contact teeth 29 in the respective main conductor 5 is avoided. This is special for very small main conductors of particular advantage.

As can be seen from Fig. 1, two mounting states of the cable terminal according to the invention shown. On. the left side is the cable connection terminal in their final connection position, namely the second contact teeth 31 have penetrated sufficiently deep into the branch conductor 3 and the first Contact teeth 29 have penetrated sufficiently deep into the main conductor 5. On the right half of Fig. 1 is a relation to the final mounting state of the cable connection terminal 1 previous mounting state shown. When the first contact teeth 29 impinge on the main conductor 5, they are based on the main conductors 5 from and upon actuation of the clamping devices 39, first the second contact teeth penetrate 31 in the branch line 3 as far as until the guide walls 83 of the Contact element 27 in abutment with the limiting means 77 of the contact element housing 35 arrive. Only then do the first contact teeth 29 penetrate the main 5 a. Due to the split clamping frame 7 are both mounting states possible at the same time.

FIG. 23 shows a cable connection terminal 1 according to the invention in two installation states, FIG. a right mounting state in which the main conductor 5 is not yet connected are, and a left, the main conductor 5 are connected. The cable connection terminal 1 is shown in FIG. 23 on a smaller scale than in FIG. 1. Both mounting conditions can at the same time due to the split clamping frame 7 consist.

As can be seen, both the branch conductors 3 and the main conductors 5 are of considerable importance smaller diameter than in the embodiment of FIG. 1. In comparison The two representations of Fig. 1 and Fig. 23 will be the particular advantage the great adaptability of the cable connection terminal 1 according to the invention can be seen on different conductor diameters.

The limiting means 77 are removed for the smaller branch conductors 3, so that the stop surfaces 84 of the contact element 27 directly on the base portion 73 of the contact element housing 35 abut. Furthermore, it can be seen that the respective Stop surface 71 of a vertical wedge 23 against the stop surface 68th the other vertical wedge 23 abuts. Located in the left half of Fig. 23 the cable terminal 1 thus in its maximum clamping position.

In Fig. 24, the cable terminal 1 of Fig. 23 is shown in side view. As shown in Fig. 24, the cable terminal is a continuous main conductor 5, whereas two branch conductors 3 are arranged from one side and two Branch conductor 3 are inserted from the other side into the cable connection terminal 1. Fig. 24 also shows all the resulting contour lines.

In Fig. 25, the cable terminal 1 of Fig. 23 is shown in top view, in particular, the dovetail guide between vertical wedge extension 17 and the associated clamping frame segments 9 and 11 clearly becomes.

Claims (13)

Cable terminal (1) for connecting branch conductor (3) to main conductor (5) of a main conductor cable (2) of a power supply,
with at least two half-shell, a receiving space (21) of the main conductor cable (2) forming the clamping frame (7) which are attachable to the main conductor cable (2) and enclose this in the operating state,
with at least one contact element (27) accommodated in a contact element housing (35), which in turn is arranged in one of the clamping frames (7) and open on the side opposite the clamping frame side, the contact element (27) a plurality of rows of first contact teeth (29) projecting towards the receiving space (21) of the main conductor cable, and
with a clamping device (39), which connects the clamping frame (7) together and when clamping the penetration of the first contact teeth (29) in the soul (8) of the associated main conductor (5) of the main conductor cable (2) causes
characterized in that the contact element (27) is slidably received in the contact element housing (35),
that between receiving element (27) and contact element housing (35) has a receiving space (12) of the branch conductor (3) is provided, and
in that the contact element (27) has at least one row of second contact teeth (31) which serve to penetrate into the associated branch conductor (3) which can be introduced into the receiving space (12) of the branch conductor. Cable terminal according to claim 1, characterized in that the contact element (27) has a plurality of rows of second contact teeth (31). Cable terminal according to claim 1 or 2, characterized in that one, preferably both clamping frame (7) consists of two relatively movable clamping frame segments (9, 11, 13, 15) is / are formed. Cable terminal according to one of Claims 1 to 3, characterized in that horizontal wedges (25, 26) of insulating material are provided between the upper and lower main conductors (5) of the main conductor cable (2). Cable connection terminal according to one of Claims 1 to 4, characterized in that an upper and a lower vertical wedge (23), each having different strengths, are provided between the horizontally arranged main conductors (5) of the main conductor cable (2). Cable terminal according to claim 5, characterized in that the vertical wedges (23) taper towards their center towards the center of the receiving space (21) of the main conductor (2) (67, 69, 70). Cable terminal according to claim 5 or 6, characterized in that the upper vertical wedge (23) is arranged offset by 180 ° from the lower vertical wedge (23). A cable terminal according to claim 7, characterized in that each vertical wedge (23) has a base portion (65) and a wedge-shaped projection portion (67), a stop surface (71) at its front end (69) of the wedge-shaped projection portion (67) and a Stop surface (68) is provided on the base portion (65). Cable terminal according to one of claims 1 to 8, characterized in that the contact element housing (35) has a stop surface (76) against the branch conductor (3). Cable terminal according to one of claims 1 to 9, characterized in that limiting means (77, 83, 85) of the power transmission from the contact element (27) to the branch conductor (3) are provided. Cable connection terminal according to claim 10, characterized in that the contact element guide walls (83) each having a stop surface (84). Cable terminal according to Claim 10 or 11, characterized in that the contact element housing (35) has stop devices (77) which serve to limit the movement of the contact element (27) and engage with the stop surfaces (84) of the guide walls (83) of the contact element. Collaborate housing (35). Cable terminal according to one of claims 1 to 12, characterized in that limiting means (97, 101) of the power transmission from the contact elements (27) to the main conductor wires (5) are provided.

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