Grounding clip and connection assembly

Abstract

Earthing clamp (10) for electrically connecting a protective conductor (12) to an earthing cable (14), comprising an electrically conductive support element (16) that can be fixed to an object (53), a protective conductor clamping element (18, 68) for electrically connecting the protective conductor (12) to the support element (16), and an earthing cable clamping element (20) for electrically connecting the earthing cable (14) to the support element (16). The earthing cable clamping element (20) comprises a clamping spring (24) with a clamping leg (26), wherein, in a clamping position of the earthing cable clamping element (20), the earthing cable (14) is clamped between the support element (16) and the clamping leg (26).

Description

[0001] The invention relates to a connection arrangement with an earthing clamp for electrically connecting a protective conductor to an earthing cable.

[0002] Electrical equipment and machinery in industrial plants are generally grounded to reliably and safely dissipate unwanted currents, typically ranging from 0 to 3000 A, for example, those resulting from a short circuit or a fault. Grounding is often achieved using freely routed grounding cables.

[0003] An earthing cable is typically a flexible, single-core electrical conductor with a multitude of strands made of copper or tinned copper and a cross-sectional area of ​​6–240 mm², particularly 10–50 mm². The earthing cable is electrically connected to an earth electrode and is preferably laid in cable ducts within the industrial plant, so that the earthing cable passes by all devices and machines to be earthed. To earth a device or machine, its protective conductor is connected to the earthing cable and electrically connected to it.

[0004] The protective conductor, also known as PE conductor, is typically a flexible, single-core electrical cable with multiple copper strands and a cross-sectional area of ​​6–16 mm². One end of the protective conductor usually includes a ferrule to protect the strands from mechanical damage and to ensure a secure electrical connection.

[0005] In this context, it is known to establish the electrical connection between the protective conductor and the grounding cable using a grounding block. Such a grounding block comprises an electrically conductive brass block with a U-shaped recess on one end face for receiving the grounding cable, a claw for securing the grounding cable in the U-shaped recess, and a screw for actuating the claw. To connect the grounding cable, the screw must first be actuated so that the claw releases the U-shaped recess, allowing the grounding cable to be inserted laterally into it. After inserting the grounding cable into the U-shaped recess, the screw must be actuated again so that the claw secures the grounding cable in the U-shaped recess and presses it against the brass block.The protective conductor is connected to the rectangular brass block by inserting one end of the protective conductor into a hole in the block and securing it with another screw. This requires two screw connections to electrically connect the protective conductor and the grounding cable via the grounding block.

[0006] WO2019239024A1 discloses an earthing element that can be clamped onto the edge of a metal plate and that includes a screw terminal for an earthing cable.

[0007] US2020036112A1 describes a device with a metal carrier and a spring arranged to clamp two wire ends for electrical contact. The metal carrier has a hole that allows the device to be attached to any mounting body.

[0008] The object of the present invention is to create a simple and reliable electrical connection between a protective conductor and an earthing cable, thereby also reducing the assembly time.

[0009] The invention solves this problem through the im The combination of features specified in claim 1. Advantageous embodiments and further developments of the invention are set forth in the dependent claims.

[0010] An earthing clamp of the connection arrangement according to the invention has, for electrically connecting a protective conductor to an earthing cable ,An electrically conductive support element that can be fixed to an object, a protective conductor clamping element for electrically connecting the protective conductor to the support element, and a grounding cable clamping element for electrically connecting the grounding cable to the support element. The grounding cable clamping element comprises a clamping spring with a clamping leg, wherein, in a clamping position of the grounding cable clamping element, the grounding cable is clamped between the support element and the clamping leg.

[0011] The clamping spring of the grounding cable clamping element allows for quick and easy electrical connection of the grounding cable to the support element, as the grounding cable can be inserted into the clamping element without tools. In particular, the need for a screw connection is eliminated. This simplifies the electrical connection of the protective conductor to the grounding cable and reduces installation time.

[0012] According to the invention, the clamping spring of the grounding cable clamping element exerts a spring force on the grounding cable in the clamped position of the grounding cable clamping element, which presses the grounding cable against the support element. This spring force can be generated, for example, by pre-tensioning the clamping spring when the grounding cable is inserted into the grounding cable clamping element. By pressing the grounding cable against the support element using the clamping arm of the grounding cable clamping element, an electrical connection can be established between the support element and the grounding cable.

[0013] The electrically conductive support element can preferably be made of a material with high electrical conductivity.

[0014] The grounding cable is flexible. It can be flexibly bendable, torsionally flexible, and tensile-resistant. Preferably, the grounding cable comprises a plurality of strands made of copper or tinned copper. The grounding cable can have a cross-sectional area of ​​6–240 mm², particularly 10–50 mm².

[0015] The object to which the support element can be fixed can, for example, be a cable duct. Preferably, the support element can be fixed inside the cable duct.

[0016] In a further development of the invention, the support element is dimensioned for an electrical short-circuit current of up to 6000 A, in particular up to 2000 A. For example, the cross-sectional area of ​​the support element can be dimensioned, depending on the electrical conductivity of a material of the support element, such that the support element is conductive for an electrical short-circuit current of up to 6000 A, in particular up to 2000 A.

[0017] According to the invention, the clamping arm of the grounding cable clamping element forms an insertion ramp for the lateral insertion of the grounding cable into the grounding cable clamping element. Lateral insertion can be achieved by pressing a portion of the grounding cable's outer surface against the clamping arm of the grounding cable clamping element, causing the grounding cable to slide along the clamping arm and pre-tensioning the clamping spring of the grounding cable clamping element until the clamping position of the grounding cable clamping element is reached.

[0018] In a further development of the invention, the grounding cable is partially enclosed by a contact area of ​​the support element when the grounding cable clamping element is in the clamping position. Advantageously, this partial enclosure creates a particularly good electrical connection between the support element and the grounding cable.

[0019] In a further development of the invention, the support element has a securing projection for securing the grounding cable in the clamping position of the grounding cable clamping element.

[0020] In a further development of the invention, the protective conductor clamping element comprises a clamping spring with a clamping leg, wherein, in a clamping position of the protective conductor clamping element, the protective conductor is clamped between the support element and the clamping leg of the protective conductor clamping element. Preferably, the clamping spring of the protective conductor clamping element exerts a spring force on the protective conductor in the clamping position of the protective conductor clamping element, which presses the protective conductor against the support element.

[0021] The spring force can be generated, for example, by pre-tensioning the clamping spring when the protective conductor is inserted into the protective conductor terminal. Pressing the protective conductor against the support element using the clamping arm of the protective conductor terminal establishes an electrical connection between the support element and the protective conductor.

[0022] In a further development of the invention, the clamping leg of the protective conductor clamping element forms an insertion ramp for the end insertion of the protective conductor into the protective conductor clamping element. The end insertion can be effected by pressing one end of the protective conductor, which preferably comprises a ferrule or is a solid wire without a ferrule, against the clamping leg of the protective conductor clamping element. This causes the end of the protective conductor to slide along the clamping leg of the protective conductor clamping element and pre-tension the clamping spring of the protective conductor clamping element until the clamping position of the protective conductor clamping element is reached.

[0023] In a further development of the invention, a free end of the clamping leg of the protective conductor clamping element is arranged above a contact surface of the support element and at a distance from a side edge of the support element. Advantageously, this allows for particularly stable clamping of the protective conductor between the support element and the clamping leg of the protective conductor clamping element. The contact surface can be defined by contact between the support element and the protective conductor in the clamping position of the protective conductor clamping element. The distance between the free end of the clamping leg and the side edge of the support element can be 3–20 mm, in particular 12–18 mm or 15 mm.

[0024] In a further development of the invention, the grounding terminal has a plurality of protective conductor clamping elements, in particular two or three protective conductor clamping elements, for electrically connecting one protective conductor each to the support element. The plurality of protective conductor clamping elements can be identical or different in design. The protective conductor clamping elements can differ from one another in the maximum clamping diameter of the protective conductors.

[0025] In a further development of the invention, the protective conductor clamping element and the earthing cable clamping element are designed as a one-piece clamping element.

[0026] In a further development of the invention, the one-piece clamping element is designed as a clip that is clipped onto the carrier element.

[0027] In a further development of the invention, the one-piece clamping element is latched to the support element by means of at least one locking element. Advantageously, the locking element can secure the one-piece clamping element against unintentional slippage.

[0028] According to the invention, the support element has at least one fastening hole for fixing the support element to the object. The fastening hole can be a through hole for receiving a threaded stud or a screw. The support element can be fixed to the object by means of a screw connection.

[0029] In a further development of the invention, the fastening hole comprises a press-fit nut or a threaded bore.

[0030] In a further development of the invention, the support element comprises a spacer which, in a fixed state of the support element on the object, holds the protective conductor terminal element at a distance from the object. Advantageously, this distance from the object facilitates the insertion of the protective conductor into the protective conductor terminal element from the end, as the object, in the fixed state, does not obstruct a user's hand during insertion of the protective conductor.

[0031] In a further development of the invention, the spacer of the support element is L-shaped or U-shaped.

[0032] In a further development of the invention, the protective conductor clamping element and the grounding cable clamping element are made of spring steel. In particular, the clamping spring of the protective conductor clamping element and the clamping spring of the grounding cable clamping element can be made of spring steel. Spring steel can have a yield strength to tensile strength ratio of over 85%.

[0033] In a further development of the invention, the support element is made of brass, copper, or tinned copper. These materials, in particular, are especially advantageous for conducting electric current.

[0034] In a further development of the invention, the support element, the protective conductor clamping element and the earthing cable clamping element are each designed as a stamped and bent part.

[0035] A connection arrangement according to the invention comprises a grounding cable electrically connected to a ground electrode and a protective conductor connected to a powered unit for grounding purposes. The connection arrangement according to the invention further includes a previously described grounding clamp, wherein the protective conductor is held in an electrically conductive connection to the support element by means of the protective conductor clamping element and the grounding cable is held by means of the grounding cable clamping element. The unit can be, for example, an electrical device or an electrical machine, in particular a welding robot, a lathe, a milling machine, or an EDM machine.

[0036] According to the invention, the grounding cable is made of a flexible, multi-stranded copper conductor or copper strand. The grounding cable can be single-core. The grounding cable can have a cross-sectional area of ​​6–240 mm², in particular 10–50 mm².

[0037] The invention will now be explained in more detail with reference to an exemplary embodiment shown schematically in the drawing. The drawing shows... Fig. 1 is an oblique view of an earthing clamp; Fig. 2 is an oblique view of a support element of the earthing clamp. Fig. 1 ; Fig. 3 an oblique view of a one-piece clamping element of the grounding clamp of Fig. 1 ; Fig. 4 a view of two grounding clamps fixed to an object in different positions; Fig. 5 a view of a connection arrangement with two grounding clamps.

[0038] Fig. 1 Figure 1 shows an earthing terminal 10 for electrically connecting a protective conductor 12 to an earthing cable 14. The earthing terminal 10 comprises an electrically conductive support element 16, which is also used in Fig. 2 The figure shows a protective conductor clamping element 18 for electrically connecting the protective conductor 12 to the support element 16 and an earthing cable clamping element 20 for electrically connecting the earthing cable 14 to the support element 16. The protective conductor clamping element 18 and the earthing cable clamping element 20 are designed as a one-piece clamping element 22, wherein the one-piece clamping element 22 is also available in Fig. 3 shown.

[0039] The support element 16, the protective conductor terminal element 18, and the earthing cable terminal element 20 are stamped and bent parts formed by stamping and bending a sheet of metal. The protective conductor terminal element 18 and the earthing cable terminal element 20 are made of spring steel with a thickness TiK of 1 mm. The electrically conductive support element 16 is made of a material with high electrical conductivity, preferably copper or brass, and has a width BrT of 20 mm and a thickness TiT of 2.5 mm. This results in a cross-sectional area of ​​50 mm², which can withstand a maximum permissible current of up to 6000 A.

[0040] The grounding cable clamping element 20 comprises a clamping spring 24 with a clamping leg 26, which is arranged on a spring arc 28 of the clamping spring 24. Fig. 1 A clamping position of the grounding cable clamping element 20 is shown, in which the in Fig. 1 The grounding cable 14, shown with dashed lines, is clamped between the support element 16 and the clamping arm 26. In the clamping position of the grounding cable clamping element 20, the clamping spring 24 of the grounding cable clamping element 20 exerts a spring force on the grounding cable 14, which presses the grounding cable 14 against the support element 16. By pressing the grounding cable 14 against the support element 16, the grounding cable 14 is electrically connected to the support element 16.

[0041] The grounding cable clamping element 20 is moved into the clamping position by inserting the grounding cable 14 laterally into the grounding cable clamping element 20. For this purpose, a portion of the outer surface of the grounding cable 14 is pressed against the clamping arm 26, so that the grounding cable 14 slides along the clamping arm 26 of the grounding cable clamping element 20 and pre-tensions the clamping spring 24 of the grounding cable clamping element 20 until the clamping position of the grounding cable clamping element 20 is reached. The clamping arm 26 of the grounding cable clamping element 20 thus forms an insertion ramp for the lateral insertion of the grounding cable 14 into the grounding cable clamping element 20.

[0042] The support element 16 has an L-shaped contact section 30 which partially engages the grounding cable 14 in the clamping position of the grounding cable clamping element 20. The L-shaped contact section 30 has two legs 32, 34, wherein the angle α between the two legs 32, 34 is less than 90°. In the exemplary embodiment of the Fig. 1 and 2 The angle a is 75°. In the clamping position of the grounding cable clamping element 20, the clamping spring 24 of the grounding cable clamping element 20 exerts a spring force on the grounding cable 14 such that the grounding cable 14 is pressed against the two legs 32, 34 and thereby an electrical connection is established between the two legs 32, 34 and the grounding cable 14.

[0043] The leg 32 has a chamfered end 36 to facilitate the insertion of the grounding cable 14 into the grounding cable clamping element 20. The chamfered end 36 is beveled away from the clamping leg 26 in one direction.

[0044] The support element 16 has a locking projection 38 for securing the grounding cable 14 in the clamping position of the grounding cable clamping element 20. The locking projection 38 is arranged such that the grounding cable 14 must overcome the locking projection 38 before it can leave the clamping position of the grounding cable clamping element 20. In the exemplary embodiment of the Fig. 1 and 2 The securing projection 38 is a tab formed by punching a U-shaped recess into the L-shaped contact part 30 and bent towards the clamping leg 26 after punching, with one end of the tab directed towards an earthing cable 14 clamped between the support element 16 and the clamping leg 26.

[0045] The support element 16 has a through-hole for fixing the support element 16 to an object. The mounting hole 40 is located on the leg 34. Fixing is achieved by means of a screw inserted into the mounting hole 40 of the support element 16. This screw securely fastens the grounding clamp 10 to the object. When the support element 16 is fixed to the object, the leg 34 makes contact with the object.

[0046] The support element 16 includes a U-shaped spacer 42, which is arranged on the L-shaped contact section 30. The U-shaped spacer 42 has two legs 44, 46 and a base 48, which is arranged between the two legs 44, 46. The leg 44 of the U-shaped spacer 42 is arranged on the leg 34 of the L-shaped contact section 30. The spacer 42 holds the protective conductor terminal element 18 in a fixed position of the support element 16 at a distance 50 from the object. This distance 50 ensures that the insertion of the protective conductor 12 into the protective conductor terminal element 18 from the object is not obstructed.

[0047] The support element 16 has a further fastening hole 52 in the form of a through hole for fixing the support element 16 to the object. The fastening hole 52 is located on the leg 46 of the U-shaped spacer 42. Fixing is achieved by means of a screw that is inserted into the fastening hole 52 of the support element 16. The grounding clamp 10 is then screwed to the object by means of this screw in a force-fit manner.

[0048] Fig. 4 The diagram shows two grounding clamps 10 in their fixed position. Both grounding clamps 10 are fixed to the object, a cable duct 53, by means of a screw each. In the Fig. 4 The screw of the earthing terminal 10 shown on the left is inserted into the mounting hole 40 and screwed to the cable duct 53. Due to the spacer 42, the protective conductor clamping element 18 is held at a distance of 15 mm from the cable duct 53 (50), allowing the protective conductor 12 to be grasped by hand by an installer and inserted into the protective conductor clamping element 18 without obstruction from the cable duct 53. In the Fig. 4 The screw is inserted into the mounting hole 52 of the grounding terminal 10 shown on the right and screwed to the cable duct 53.

[0049] Furthermore, in Fig. 1 - 3 The protective conductor clamping element 18 is shown to comprise a clamping spring 54 with a clamping leg 56. The clamping spring 54 is formed by punching a rectangular recess and two cuts into the protective conductor clamping element 18, the two cuts extending the two long sides of the rectangular recess. The clamping leg 56 is arranged between two webs 58, 60 of the protective conductor clamping element 18, which hold the clamping leg 56. The two webs 58, 60 are bent at an angle b of 45°, such that the distance between a free end 62 of the clamping leg 56 of the protective conductor clamping element 18 and the support element 16 is less than the diameter of the protective conductor 12.

[0050] In Fig. 1 A clamping position of the protective conductor clamping element 18 is shown, in which the Fig. 1 The protective conductor 12, shown with dashed lines, is clamped between the support element 16 and the clamping arm 56 of the protective conductor clamping element 18. In the clamping position of the protective conductor clamping element 18, the clamping spring 54 of the protective conductor clamping element 18 exerts a spring force on the protective conductor 12, which presses the protective conductor 12 against the support element 16. By pressing the protective conductor 12 against the support element 16, the protective conductor 12 is electrically connected to the support element 16, and at the same time, the clamping arm 56 ensures that the protective conductor 12 is secured against tensile stress in accordance with standards.

[0051] The protective conductor terminal 18 is moved into the clamping position by inserting the protective conductor 12 into the protective conductor terminal 18 at its end. One end of the protective conductor 12 is pressed against the clamping leg 56, causing the protective conductor 12 to slide along the clamping leg 56 of the protective conductor terminal 18 and pre-tensioning the clamping spring 54 of the protective conductor terminal 18 until the clamping position of the protective conductor terminal 18 is reached. The clamping leg 56 of the protective conductor terminal 18 then forms an insertion ramp for the end insertion of the protective conductor 12 into the protective conductor terminal 18. Further details are provided below. Fig. 1 It is evident that one direction of the end-side insertion of the protective conductor 12 into the protective conductor clamping element 18 is orthogonal to one direction of the lateral insertion of the earthing rope 14 into the earthing rope clamping element 20.

[0052] For stable clamping of the protective conductor 12 between the support element 16 and the clamping leg 56 of the protective conductor clamping element 18, the free end 62 of the clamping leg 56 of the protective conductor clamping element 18 is positioned over a contact surface 64 of the support element 16 and at a distance from a side edge 66 of the support element 16. The contact surface 64 makes contact with the protective conductor 12 in the clamping position of the protective conductor clamping element 18. The distance between the free end 62 of the clamping leg 56 and the side edge 66 of the support element 16 is ideally 6–9 mm. This distance of 6–9 mm advantageously allows for the central clamping of a ferrule of the protective conductor 12. In the illustrated embodiment, the distance is 8 mm.

[0053] The free end 62 of the clamping leg 56 of the protective conductor clamping element 18 has a concave shape. The concave shape of the free end 62 improves its engagement with the protective conductor 12 when a force acting away from the protective conductor clamping element 18 is applied to the clamped protective conductor 12. This ensures secure clamping of the protective conductor 12 between the support element 16 and the clamping leg 56 of the protective conductor clamping element 18, and, in particular, the clamping leg 56 provides standard-compliant protection of the protective conductor 12 against tensile stress.

[0054] The earthing terminal 10 includes a further protective conductor terminal element 68. The further protective conductor terminal element 68 and the protective conductor terminal element 18 have the same construction, which is why the previously given description of the protective conductor terminal element 18 also applies accordingly to the further protective conductor terminal element 68. Fig. 1 The clamping position of the protective conductor clamping element 18 is shown, whereas in Fig. 3 The clamping position of the further protective conductor clamping element 68 is shown without depicting the clamped protective conductor 12.

[0055] Furthermore, it shows in particular Fig. 3 The one-piece clamping element 22 comprises the two protective conductor clamping elements 18, 68 and the earthing cable clamping element 20. The one-piece clamping element 22 is designed as a clip with a U-shaped receptacle 70. The one-piece clamping element 22 is clipped laterally onto the support element 16, with the support element 16 being arranged in the U-shaped receptacle 70 when the one-piece clamping element 22 is clipped in place. In particular, the base 48 of the spacer 42 is arranged in the U-shaped receptacle 70. The two legs 44, 46 of the spacer 42 prevent unintentional twisting of the clip.

[0056] To secure the clipped state, the one-piece clamping element 22 has two locking elements 72 in the form of tabs which engage with corresponding locking elements 74 of the carrier element 16 in the form of recesses when clipped. The tabs of the one-piece clamping element 22 are formed by punching a U-shaped recess, which is bent after punching in the direction of the protective conductor clamping elements 18, 68.

[0057] Fig. 5 Figure 1 shows a connection arrangement 100 with a grounding cable 14, which is electrically connected to a ground electrode 104. The grounding cable 14 is a flexible, single-core electrical conductor with a plurality of strands made of tinned copper and has a cross-sectional area of ​​preferably 10–50 mm². In the illustrated embodiment, the grounding cable 14 has a cross-sectional area of ​​50 mm². The grounding cable 14 is routed such that it passes by a powered industrial robot 106 and a control cabinet 108 of a machine tool.

[0058] The connection arrangement 100 further comprises a protective conductor 12, which is electrically connected to the industrial robot 106 for the purpose of grounding, and another protective conductor 12, which is electrically connected to the control cabinet 108 for the purpose of grounding the machine tool. The two protective conductors 12 are each a flexible single-core electrical cable with a plurality of copper strands and have a cross-sectional area of ​​preferably 6–16 mm². Im In the illustrated embodiment, the two protective conductors 12 have a cross-sectional area of ​​16 mm².

[0059] The two protective conductors 12 are each connected to a Fig. 1 - 5 The earthing terminal 10 of the connection arrangement 100, as shown and described above, is electrically connected to the earthing cable 14. This electrically connects the industrial robot 106 and the machine tool, in particular its control cabinet 108, to the earth electrode and thus grounds them.

Claims

1. Connecting arrangement (100) for electrically connecting a protective conductor (12) to an earthing cable (14), comprising: - an earthing cable (14) which is electrically connected to an earth electrode (104), wherein the earthing cable (14) is flexible and made of a multi-wire copper conductor or of stranded copper wire, - a protective conductor (12) connected to a power-supplied unit (106, 108) for earthing purposes, - an electrically conductive support element (16) which can be fixed to an object (53), - a protective conductor clamping element (18, 68) for electrically connecting the protective conductor (12) to the support element (16) and - an earthing cable clamping element (20) for electrically connecting the earthing cable (14) to the support element (16), - wherein the protective conductor (12) is held in electrically conductive connection to the support element (16) by means of the protective conductor clamping element (18, 68), and the earthing cable (14) is held in electrically conductive connection to the support element by means of the earthing cable clamping element (20), - wherein the earthing cable clamping element (20) comprises a clamping spring (24) having a clamping leg (26), - wherein the clamping leg (26) of the earthing cable clamping element (20) forms an insertion bevel for laterally inserting the earthing cable (14) into the earthing cable clamping element (20), - wherein the earthing cable (14) is clamped between the support element (16) and the clamping leg (26) in a clamping position of the earthing cable clamping element (20), - and wherein the support element (16) comprises at least one fastening hole (40, 52) for fixing the support element (16) to the object (53).

2. Connecting arrangement (100) according to claim 1, characterized in that - the support element (16) is dimensioned for an electrical short-circuit current of up to 6,000 A, in particular up to 2,000 A.

3. Connecting arrangement (100) according to claim 1 or claim 2, characterized in that - the earthing cable (14), in the clamping position, is partially encompassed by a contact part (30) of the support element (16).

4. Connecting arrangement (100) according to any of the preceding claims, characterized in that - the support element (16) comprises a securing projection (38) for securing the earthing cable (14) in the clamping position.

5. Connecting arrangement (100) according to any of the preceding claims, characterized in that - the protective conductor clamping element (18, 68) comprises a clamping spring (54) having a clamping leg (56), - the protective conductor (12) being clamped between the support element (16) and the clamping leg (56) of the protective conductor clamping element (18, 68) in a clamping position of the protective conductor clamping element (18, 68).

6. Connecting arrangement (100) according to any of the preceding claims, characterized in that - the clamping leg (56) of the protective conductor clamping element (18, 68) forms an insertion bevel for inserting the end of the protective conductor (12) into the protective conductor clamping element (18, 68).

7. Connecting arrangement (100) according to any of the preceding claims, characterized by - a plurality of protective conductor clamping elements (18, 68) for electrically connecting, in each case, a protective conductor (12) to the support element (16).

8. Connecting arrangement (100) according to any of the preceding claims, characterized in that - the protective conductor clamping element (18, 68) and the earthing cable clamping element (20) are designed as a one-piece clamping element (22).

9. Connecting arrangement (100) according to any of the preceding claims, characterized in that - the support element (16) comprises a spacer (42), by means of which, in a fixed state of the support element (16) on the object (53), the protective conductor clamping element (18, 68) is held at a distance from the object (53).

10. Connecting arrangement (100) according to any of the preceding claims, characterized in that - the protective conductor clamping element (18, 68) and the earthing cable clamping element (20) are made of spring steel.

11. Connecting arrangement (100) according to any of the preceding claims, characterized in that - the support element (16) is made of brass, copper or tinned copper.

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