SUSPENSION 04 CLAMPS

Transcription

1 SUSPENSION CLAMPS 04

2 4 SUSPENSION CLAMPS 57 Contents General Suspension clamp trunnion type, forged, for aluminium based conductors Suspension clamp trunnion type, forged, with bigger angle of deflection, for aluminium based conductors Suspension clamp with bolt, forged, for aluminium based conductors Suspension clamp with steel strap as trunnion, casted, for aluminium based conductors Suspension clamp with bolt, casted, for aluminium based conductors Suspension clamp with bolt, casted, with shackle, for aluminium based conductors Suspension clamp envelope type casted, for aluminium based conductors Suspension clamp envelope type trunnion type, casted, for aluminum based conductors HSU trunnion type, forged, for aluminium based conductors HSU with aluminium belt, casted, for aluminium based conductors Compact suspension clamp trunnion type, forged, with line guards, for aluminium based conductors Compact suspension clamp trunnion type, forged, with armor rods, for aluminium based conductors Counter weight... 71

3 SUSPENSION CLAMPS 4 58 General Suspension clamps support and connect conductors onto insulator strings. Information for ground wire suspension clamps, including fibre optic cables (OPGW - optical ground wires) and ADSS (all-dielectric self-supporting) cables can be found in Parts 8 and 18 of the catalogue. Suspension clamps provide the following: - A safe mechanical connection in all conditions. This includes all ruling span stresses at maximum working loads combined with controlled grip of longitudinal tension that provides protection. Suspension clamps also provide longitudinal grip control, releasing the conductor at the suspension clamps at defined slip loads to prevent damage. - The clamps are designed to protect the conductor at line design installation loads. - Suspension clamps incorporate controlled movement for added conductor protection against wind induced vibration and oscillation. - High electrical current short circuit loads are transmitted through arcing devices attached to string hardware protecting the suspension system. For more details, please refer to Part 3 of the catalogue. - The outer profile clamp shapes are designeduce electrical discharge to below maximum specified corona extinction voltages. These values are also influenced by conductor bundle configuration, and must also be considered. Bosporus Crossing:Double I-insulator string with a saddle type suspension clamp Material - All materials used are fully compatible with the conductor application. For example, clamps attached to aluminium based conductors are manufactured from high strength corrosion resistant aluminium alloys. - Unless otherwise specified, all ferrous components are hot dipped galvanized acc. to EN or ISO EN 1461; Overhead lines-requirements and tests for fittings. Where stainless steel fasteners are used, ISO EN 3506; Mechanical properties of corrosion resistant stainless steel fasteners - Part 1: Bolts, screws and studs are specified. - For special cases where big dynamic loads may occur at low temperatures, fittings made of low-temperature (cryogenic) steels are available. - For lines constructed in higher corrosive atmospheres and environments, the minimum zinc thickness of fittings can be increased from 85 μ to 110 μ or 130 μ Microns. - All fitting assemblies supplied have identification marking according to EN 61284; this includes manufactures mark and date code, specified minimum mechanical failure load, and 1 second short circuit current withstand rating.

4 4 SUSPENSION CLAMPS 59 - Eye-clevis connections are designed acc. to IEC and DIN Eyes and clevises; connecting dimensions, Bolts acc. to DIN Connecting bolts for overhead power lines. - Bolt security split pins are manufactured in stainless steel. Copper tin-plated types can be also be supplied. Counter Weights can be specified to restrict displacement angles to maintain ground earth clearancesand avoid conductor uplift. There are several attachment options: - Counterweight devices can be mounted using elongated bolts. Example of a suspension device for counterweights - For vertical twin and quadruple bundles, weights can be mounted onto the connecting straps. Example of the assembly of counterweights - Counterweights can also be mounted onto conductor bundle spacers in Jumper Loops. (See also Part 9) - Counterweight clamp attachments may reduce earth grounding clearances. If space restrictions apply, counterweights can be mounted directly onto the conductor. Arrangement of counterweights for jumper loops Counterweights for conductors

5 SUSPENSION CLAMPS 4 60 Releasing suspension clamp (left) and Characteristic force-time behaviour (right) The following catalogue pages provide an overview of the types of suspension clamp most commonly used. For more specialised requirements, suspension clamp designs accommodate specific line protection features. Controlled slip suspension clamps This type allows controlled axial cable slip forces to be precisely adjusted to allow controlled cable release at specified loads. Axial grip and slip displacement is maintained following high imbalanced span loadings e.g; impact or ice shedding loads on adjacent spans. Suspension clamps for wide-span fields For longer spans, double clamp types can be specified for higher strength and reduced cable bending stresses by reducing cable angle deviation at suspension points. Saddle type suspension clamps, manufactured from high strength corrosion resistant aluminium alloys, are contoured at the cable connection interface to reduce support stresses, and are also recommended for long span high line angle deviation routes. This type can also be offered Double-suspension string with a saddle type suspension clamp (left) and Saddle type suspension clamp at a vibration test in the laboratory (right) as a controlled slip load clamp. Both clamp types have proven reliability and long service life with multiple power network operators. Heat cycle test with suspension clamps for high-temperature conductors Suspension clamps for high-temperature conductors As power requirements increase, high-temperature carrying conductors with a capacity of up to 235 C will be more common. However, the clamps used for these conductors must not be affected by high temperatures and maintain strength and mechanical performance. It is therefore necessary to increase the mass and surface area of clamp designs to reduce thermal stresses. This is preferably accomplished by the use of Armour Rods.

6 4 SUSPENSION CLAMPS 61 Long-term testing demonstrates the effectiveness of these developments. These tests also prove suitability of different types of high temperature conductor s e.g. where the steel core has a gap arranged loosely inside the conductor (e.g. GAP GZTACSR conductor). Suspension clamps for bundle conductors, for vertical twin and quadruple bundles All types of clamps can be used in multiple string configuartions with specific bundle spacings. Different types of conterweight can be adapted for direct or indirect connection to conductors. Suspension clamp for a vertical twin bundle Special models of suspension clamps For changing between different bundle shapes or for substation feeds, special designs may be necessary. Helical Suspension Unit In the clamping area, the conductor will be surrounded by a neoprene insert of concave shape preventing the conductor from slipping under longitudinal tension. The helically formed rods wound around the neoprene insert are gripped by the main clamping body. There are two basic types available. A forged aluminium main body type, with steel axle pivots screwed and pressed into the body at the conductor centre line, easing installation. The main bodies are hinged and clamped by a conventional bolt, attached by steel straps to the pivots and insulator string. A conventional cast aluminium body type is secured and connected together by a high strength aluminium strap, with a clevis bolt string attachment above the conductor. Parallel groove clamp as suspension clamp (left) and an example of the changing from a twin bundle to a triple bundle (right) HSU clamp with a connection to the centre HSU clamp with an aluminium belt

7 SUSPENSION CLAMPS 4 62 Helical wire fittings Helical wire fittings are made of formed round wire rods, with the ends shaped depending on the material and diameter. The formed diameters of the wires are smaller than the diameter of cable to be applied. This creates uniform radial pre compression of the spiral without permanent distortion of the wires or sub-sets. This applies the initial low stress grip of the cable, which increases as a resultant of higher tension forces that convert to high frictional grip. Uniform radial loads and grip increase over a longer application and contact length that provide low relative and uniform radial stress. Suspension points have reinforcing rods with larger suspension clamps applied. Special short-suspension clamps or helical supporting units (HSU s) with integrated armour rods will also be used. Identification and labelling of products are in accordance with; IEC (Rules of behaviour with respect to possible hazards when dealing with electric equipment and equipment employing similar techniques) will either be printed on individual rod sets or stated on a label connected to the set. The lay direction of the helical rods is normally same as that of the outermost layer of the conductor, typically right hand lay. The material used is the same as that in the outer layer of the conductor. Example of a HSU clamp

8 4 SUSPENSION CLAMPS 63 Suspension clamp trunnion type, forged for aluminium based conductors material: aluminium, forged; steel, hot dip galvanized cond.ø A B C bolt kn ka 1s kg ,1-29, , ,0-36, , ,0-36, , /121A 35, , /1 50,1-57, , ,1-57, ,30 Other dimensions are available upon request. Suspension clamp trunnion type, forged, with bigger angle of deflection for aluminium based conductors material: aluminium, forged; steel, hot dip galvanized cond.ø A B C bolt kn ka 1s kg /203 14,0-16, , /203 19,0-21, , /204 24, , /204 32, , /204 39, ,33 The fact that the conductor cavity is prolonged will lead to a bigger angle of departure of the conductor. Other dimensions are available upon request.

9 SUSPENSION CLAMPS 4 64 Suspension clamp with bolt, forged for aluminium based conductors material: aluminium, forged; steel, hot dip galvanized cond.ø A B C bolt kn ka 1s kg /102 9,0-14, , /101 13,5-17, , /104 18,5-23, , /11 21,2-23, , /21 23,5-25, , /10 25,8-28, , /602 28,1-30, , /1 30,1-32, , /21 33,0-36, , /23 36,1-39, , /25 40,0-44, ,80 Other dimensions are available upon request. Suspension clamp with steel strap as trunnion, casted for aluminium based conductors material: aluminium, casted; steel, hot dip galvanized cond.ø A B C bolt kn ka 1s kg /20 25,0-32, , ,0-52, , ,0-62, ,50 Other dimensions are available upon request.

10 4 SUSPENSION CLAMPS 65 Suspension clamp with bolt, casted for aluminium based conductors material: aluminium, casted; steel, hot dip galvanized cond.ø A B C bolt kn ka 1s kg /1 9,0-16, , /1 16,5-22, , ,0-25, , ,0-32, , ,0-36, , ,0-47, ,50 Other dimensions are available upon request. Suspension clamp with bolt, casted, with shackle for aluminium based conductors material: aluminium, casted; steel, hot dip galvanized cond.ø A B kn ka 1s kg ,0-16, , ,0-18, ,90 Other dimensions are available upon request.

11 SUSPENSION CLAMPS 4 66 Suspension clamp envelope type casted for aluminium based conductors material: aluminium, casted; aluminium extruded; steel, hot dip galvanized cond.ø A B C bolt kn ka 1s kg ,0-32, , ,0-36, , ,0-43, , /0 43,0-53, , ,0-65, ,90 These types with a connecting bolt at the top have a shape that means the clevis widths do not conform to the IEC recommendation. Therefore, a connecting piece, e.g. a hinge, will be required in addition. Rounding off guarantees a high corona resistant performance. Other dimensions are available upon request. Suspension clamp envelope type trunnion type, casted for aluminum based conductors material: aluminium, casted; steel, hot dip galvanized kn ka 1s kg cond.ø A B C bolt ,0-36, ,30 These types with a connecting bolt at the top have a shape that means the clevis widths do not conform to the IEC recommendation. Therefore, a connecting piece, e.g. a hinge, will be required in addition. The steel eyes of these suspension clamps are fixed in the housing by means of a steel strap.this fixing point is in line with the conductor axis.rounding off guarantees a high corona resistant performance. Other dimensions are available upon request.

12 4 SUSPENSION CLAMPS 67 HSU trunnion type, forged for aluminium based conductors material: aluminium, forged; aluminium-rods; steel, hot dip galvanized; neoprene cond.ø B C D bolt kn ka 1s kg ,24-12, , ,70-13, , ,03-13, , ,49-13, , ,79-14, , ,12-14, , ,58-15, , ,11-15, , ,42-15, , ,55-18, , ,75-16, , ,41-17, , ,12-17, , ,06-18, , ,59-19, , ,08-19, , ,53-20, , ,22-20, , ,96-21, , ,49-22, , ,12-22, , ,71-23, , ,06-23, , ,39-23, , ,83-24, , ,46-25, , ,07-25, , ,55-25, , ,98-26, , ,44-27, , ,31-27, , ,71-28, , ,42-28, , ,88-29, , ,29-29, ,00

13 SUSPENSION CLAMPS 4 68 material: aluminium, forged; aluminium-rods; steel, hot dip galvanized; neoprene cond.ø B C D bolt kn ka 1s kg ,87-30, , ,71-31, , ,17-31, , ,00-32, , ,69-33, , ,40-34, ,50 These articles are based on right-hand-layed conductors. Articles for left-hand-layed conductors are available upon request. Thescrewtypeboltsoftheseclampshavebeenmountedinlinewiththeconductoraxes.Thiswill help to improve mobility and reduce alternating bending strains caused by vibrations. In order to minimize abrasion between the eyes and the screw type bolts, these parts are made of steel. HSU s (heliformed suspension units) can be used for a conductor angle of up to 30. Conductor angles of up to 60 will be possible if two bodies are connected by a suitable yoke plate via a combined heliformed rod. This is shown in part 18.Other dimensions are available upon request. HSU with aluminium belt, casted for aluminium based conductors material: aluminium, casted; aluminium, extruded; aluminiumrods; steel, hot dip galvanized; neoprene cond.ø B C D bolt kn ka 1s kg /2/AO 11,05-11, , /2/AO 11,96-12, , /2/AO 12,24-12, , /2/AO 12,70-13, , /3/AL 12,70-13, , /2/AO 13,03-13, , /2/AO 13,79-14, , /2/AO 14,12-14, ,50

14 4 SUSPENSION CLAMPS 69 material: aluminium, casted; aluminium, extruded; aluminiumrods; steel, hot dip galvanized; neoprene cond.ø B C D bolt kn ka 1s kg /2/AO 14,58-15, , /3/AL 14,58-15, , /2/AO 15,11-15, , /2/AO 15,75-16, , /2/AO 16,41-17, , /2/AO 17,12-17, , /2/AO 17,55-18, , /2/AO 18,59-19, , /2/AO 19,08-19, , /2/AO 19,53-20, , /2/AO 20,22-20, , /2/AO 20,96-21, , /2/AO 22,12-23, , /2/AO 25,07-25, , /2/AO 25,55-25, , /2/AO 25,98-26, , /2/AO 27,31-27, ,80 These articles are based on right-hand-layed conductors. Articles for left-hand-layed conductors are available upon request. Clamps with reinforcing rods are available upon request.other dimensions are available upon request. Compact suspension clamp trunnion type, forged, with line guards for aluminium based conductors material: aluminium, forged; aluminium-rods; steel, hot dip galvanized kn ka 1s kg cond.ø B C D bolt ,42-16, , ,03-16, , ,66-17, , ,27-17, ,90

15 SUSPENSION CLAMPS 4 70 material: aluminium, forged; aluminium-rods; steel, hot dip galvanized cond.ø B C D bolt kn ka 1s kg ,88-18, , ,82-20, , ,14-22, , ,14-22, , ,83-24, , ,26-25, , ,07-25, , ,83-27, , ,05-27, , ,91-29, , ,31-30, , ,71-32, , ,23-33, , ,73-35, , ,33-36, , ,60-38, ,25 These articles are based on right-hand-layed conductors. Articles for left-hand-layed conductors are available upon request. Other dimensions are available upon request. Compact suspension clamp trunnion type, forged, with armor rods for aluminium based conductors material: aluminium, forged; aluminium-rods; steel, hot dip galvanized cond.ø B C D bolt kn ka 1s kg ,10-11, , ,79-12, , ,47-13, , ,26-14, , ,02-14, , ,88-15, , ,42-16, ,40

16 4 SUSPENSION CLAMPS 71 material: aluminium, forged; aluminium-rods; steel, hot dip galvanized cond.ø B C D bolt kn ka 1s kg ,03-16, , ,66-17, , ,27-17, , ,88-18, , ,82-19, , ,89-20, , ,70-21, , ,49-23, , ,06-23, , ,62-24, , ,82-25, , ,83-26, , ,31-27, , ,05-27, , ,91-28, , ,96-29, , ,51-30, , ,71-32, , ,26-33, ,60 These articles are based on right-hand-layed conductors. Articles for left-hand-layed conductors are available upon request. Other dimensions are available upon request. Counter weight material: cast iron, hot dip galvanized kg A B ,00 To be used in combination with counter weight set, which is available upon request. Other types of counter weights are available upon request.

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18 5 TENSION CLAMPS AND JOINTS 73 Contents General Wedge tension clamp without jumper guide, for aluminium based conductors Wedge tension clamp with jumper guide, for aluminium based conductors Double wedge tension clamp without jumper guide, for aluminium based conductors Double wedge tension clamp with jumper guide, for aluminium based conductors Bolted type tension clamp, for aluminium based conductors Heliformed dead end with thimble and reinforcing rods, for aluminium based conductors Compression dead end clamp with eye for ACSR, according to DIN Standard Compression dead end clamp with eye for ACSR, according to international standards Compression dead end clamp with clevis for ACSR, according to DIN Standard Compression dead end clamp with clevis for ACSR, according to international standards Compression dead end clamp with eye for AAAC, according to DIN Standard Compression dead end clamp with eye for AAAC, according to international standards Compression dead end clamp with clevis for AAAC, according to DIN Standard Compression dead end clamp with clevis for AAAC, according to international standards Compression dead end clamp with eye, for steel and ACS-conductor Compression dead end clamp with clevis, for steel and ACS-conductor Compression joint for ACSR, according to DIN Standard Compression joint for ACSR, according to international standards Compression joint for AAAC, according to DIN Standard Compression joint for AAAC, according to international standards Compression joint, for steel and ACS-conductor Repair sleeve, for aluminium based conductors Repair sleeve, for steel and ACS-conductor... 93

19 TENSION CLAMPS AND JOINTS kv tension tower: 2 systems for a quadruple bundle Tension string with corona ring General Tension clamps connect conductors to tension strings and withstand the required mechanical holding forces. A distinction is made between two types of tension clamps, which have fundamental differences: - Disconnectable clamps, such as wedge tension clamps, bolted type tension clamps, helical dead ends and strain thimbles, can all be adjusted; - Compression dead end clamps, are permanent connections, and cannot be adjusted for span, sag, or tension adjustments. Tension clamps must fulfil the following tasks: - A mechanical connection that safely withstands tension loads in all operating cases. This requires a minimum mechanical failing load force withstand to up 95% of the breaking load of the conductors according to the relevant specification. For substation applications, these requirements can be reduced. To reach high tension requirements, conductor entry clamp profiles are designed for minimum conductor stress. Mechanical tension forces in compression dead end clamp jumper loops are lower. - The design of the conductor entry profile reduces risk of damage due to wind induced movement and vibrations. - High currents caused by short circuit events are transmitted to the arcing devices through the string hardware. For a more detailed explanation, please refer to Part 3 of the catalogue. - Clamps have design profiles that reduce electrical stress and partial discharges to control corona extinction to above defined values. Conductor bundle configurations combined with high nominal voltages at tension towers, may require fitment of corona rings. Material - All materials used are fully compatible with the conductor application. For example, wedge clamps attached to aluminium based conductors are manufactured from high strength corrosion resistant aluminium alloys. - Unless otherwise specified, all ferrous components are hot dipped galvanized acc. to EN or ISO EN 1461; Overhead lines-requirements and tests for fittings. Where stainless steel fasteners are used, ISO EN 3506; Mechanical properties of corrosion resistant stainless steel fasteners - Part 1: Bolts, screws and studs are specified. - For special cases where big dynamic loads may occur at low temperatures, fittings made of low-temperature (cryogenic) steels are available. - For lines constructed in higher corrosive atmospheres and environments, the minimum zinc thickness of fittings can be increased from 85 μ to 110 μ or 130 μ Microns. - All fitting assemblies supplied have identification marking according to EN 61284; this includes manufactures mark and date code, specified minimum mechanical failure load, and 1 second short circuit current withstand rating.

20 5 TENSION CLAMPS AND JOINTS 75 - Eye-clevis connections are designed acc. to IEC and DIN Eyes and clevises; connecting dimensions, Bolts acc. to DIN Connecting bolts for overhead power lines. Bolt security split pins are manufactured in stainless steel.copper tinplated types can also be supplied. Wedge tension clamps These clamps can be used for overhead lines and substations. The clamping effect of the wedge tension clamp is created by the wedge action converting tension load into compressive clamping loads. As tension loads increase, longitudinal wedge movement inside the housing increases clamping forces and strength. Special grease lubrication of the wedges reduces friction increasing mechanical grip. Clamp selection also depends on the conductor configuration. For ACSR applications, the designs of the conductor grooves are optimised to clamp the aluminium outer strands into the steel core providing good mechanical grip and strength. As for conductors that are heavily greased, there are special types with reinforced screws. For increasing radial pressure, these wedge clamps will be provided with a special dry coating on the sliding surfaces. Furthermore the conductor groove is appropriately modified. If wedge tension clamps are used, the jumper loops are usually connected by 2 or 3 parallel groove clamps. Wedge tension clamp with jumper connection In principle, two types are available: Wedge tension clamps, are made of two forged bodies connected by a hinge with corresponding wedges. These can be with or without jumper connection. The jumper connection is forged with one of the two wedges. If, however, conductor diameters are bigger, it can also be connected by means of screws separately. Stainless Steel connecting screws are supplied as standard A2 quality. Hot dip galvanized screws can also be specified on request. Double wedge tension clamps have two bodies made from a high-strength aluminium profile, with wedge designed as previously described. Hot dipped galvanized screws are standard, Stainless steel A2 quality screws can also be supplied. This type of clamp is suitable for smaller conductors only. Cross section of a wedge tension clamp Cross section of a double wedge tension clamp Cone type tension clamps These clamps work in the same way as wedge tension clamps, but the wedges are cone shaped. Cones are available with or without jumper conections. Depending upon the construction of the conductors or OPGW it can be necessary to use reinforcing rods. Cone diameters will be calculated acc. to the conductor dimensions. Cone type tension clamp

21 TENSION CLAMPS AND JOINTS 5 76 Wedge tension clamp for installation on site Wedge tension clamp for instalation on site These wedge clamps are used to fix the conductor temporary while the original clamp will be fixed. The installation clamps are equipped with flexible steel straps and a demounting device and make it possible to unload the endings of the conductor while fixing the original Compression dead end clamps. Compression dead end clamps and compression joints These clamps can be used for overhead lines and substations, and can achieve the highest breaking loads using compression connection techniques. Typical force-way chart for a compression dead end clamp Marking of compression points Taper of compression dead end clamps - standard design Possible connection variants of the jumper For ACSR conductors, the internal core is compressed separately before the electrical connection sleeve. The clamps and joints are made using hydraulic compression utilising regular hexagonal dies, specified, identified and sized for each conductor joint. Compression positions are marked on each joint. Compression devices are available upon request. Each compression joint is supplied with a tube of contact compound grease to ensure a good mechanical and electrical connection between cable and connecting interfaces and prevent water ingress in exposed positions. Full jointing and assembly instructions are provided, that includes greasing application instructions. Compression dead end clamps and joint tubes have internal conically tapers at the conductor entry as standard avoiding stress points by providing gradual compression load application. External tube end tapers can also be supplied. The compression lug for the jumper shown is angled at 30 which determines jumper cable direction. For other applications, vertical jumper directions are required e.g. substations. This is accommodated by two 15 angles, one on the dead end connecting flag, the other on the jumper lug. By connecting the lug at opposite faces, vertical or 30 jumper exit angles are made. Other jumper exit angles are available upon request. Hot dipped galvanised connecting screw sets are included within the jointing kit, stainless steel screws can also be supplied.

22 5 TENSION CLAMPS AND JOINTS 77 Jumper loop tensions are accommodated by continuous weld fabrications, with additional load withstand and stabilisation possible with supporting straps. Compression dead end clamp with an increased retaining force for the loop Compression fittings for high-temperature carrying conductors As power requirements increase, high-temperature carrying conductors with a capacity of up to 235 C will be more common. However, the clamps used for these conductors must not be affected by high temperatures and maintain strength and mechanical performance. Ageing test with compression dead end clamps for high-temperature carrying conductors in the laboratory It is therefore necessary to increase the mass and surface area of clamp and joint designs to reduce thermal stresses. Long-term testing at MOSDORFER testing laboratories demonstrates the effectiveness of these developments. These tests also prove suitability of different types of high temperature conductors e.g. where the steel core has a gap arranged loosely inside the conductor (e.g. GAP GZTACSR conductor). For special projects, where electrical noise reduction is required due to cable corona discharge risks, larger diameter hollow conductors can be used that have the same electrical current carrying capacity and cross section as conventional conductors. Fittings for hollow conductors can also be supplied. Compression joint for the connection of a hollow conductor with an Aluminium- Steel conductor

23 TENSION CLAMPS AND JOINTS 5 78 Helical wire fittings Helical wire fittings are made of formed round wire rods, with the ends shaped depending on the material and diameter. The formed diameters of the wires are smaller than the diameter of cable to be applied. This creates uniform radial pre compression of the spiral without permanent distortion of the wires or sub-sets. This applies the initial low stress grip of the cable, which increases as a resultant of higher tension forces that convert to high frictional grip. Uniform radial loads and grip increase over a longer application and contact length that provide low relative and uniform radial stress. Helical dead ends have multiple formed wires bonded together with a formed loop for strain thimble attachment. The inside of the helix of all helical tension fittings have a high friction textured finish to improve grip. The materials used are fully compatible with the cable being applied. Identification and labelling of products are in accordance with IEC (Rules of behaviour with respect to possible hazards when dealing with electric equipment and equipment employing similar techniques) will either be printed on individual rod sets or stated on a label connected to the set. Example for a heliformed dead end The lay direction of the helical rods is normally same as that of the outermost layer of the conductor, typically right hand lay. The material used is the same as that of the conductor.

24 5 TENSION CLAMPS AND JOINTS 79 Wedge tension clamp without jumper guide for aluminium based conductors material: aluminium, forged; steel, hot dip galvanized cond.ø A B bolt kn ka 1s kg /24FA 9,1-10, , /34FA 10,6-11, , /34FA 10,6-11, , /44FA 11,8-14, , /34FA 14,1-15, , /04FA 15,9-17, , /14FA 17,4-19, , /14FA 19,0-21, , /24FA 21,2-23, ,04 The stated values of breaking load refer to the straps, including connecting pieces. The retaining force of the clamp depends on the conductor configuration. In the articles of /... and /... the straps are riveted on the wedges. For steel and copper conductors, wedges made of steel can be inserted. Models with other screws and/or split pins are available upon request. Other dimensions are available upon request. Wedge tension clamp with jumper guide for aluminium based conductors material: aluminium, forged; steel, hot dip galvanized cond.ø A B bolt kn ka 1s kg /24NA 12,6-14, , /34NA 14,1-15, , /04NA 15,9-17, , /14NA 17,4-19, , /14NA 19,0-21, , /24NA 21,2-23, , /34NA 23,5-24, , /14NA 23,5-25, , /24NA 25,7-27, , /34NA 28,0-30, , /44NA 30,2-32, , /54NA 32,5-33, ,35

25 TENSION CLAMPS AND JOINTS 5 80 material: aluminium, forged; steel, hot dip galvanized cond.ø A B bolt kn ka 1s kg /25NA 32,9-36, , /35NA 36,1-39, , /45NA 39,3-42, ,90 The stated values of breaking load refer to the straps, including connecting pieces. The retaining force of the clamp depends on the conductor configuration. In the articles of /... the straps are riveted on the wedges. For steel and copper conductors, wedges made of steel can be inserted. Models with other screws and/or split pins are available upon request. Other dimensions are available upon request. Double wedge tension clamp without jumper guide for aluminium based conductors material: aluminium, extruded; steel, hot dip galvanized cond.ø A B bolt kn ka 1s kg /4 7,5-10, , /3 10,5-12, , /1 13,6-16, , /1 13,6-16, ,35 The stated values of breaking load refer to the straps, including connecting pieces. The retaining force of the clamp depends on the conductor configuration. Double wedge tension clamps have a connecting bolt that is made of steel and ensures that abrasion is limited, when connected with the steel eyes. Other dimensions are available upon request.

26 5 TENSION CLAMPS AND JOINTS 81 Double wedge tension clamp with jumper guide for aluminium based conductors material: aluminium, extruded; steel, hot dip galvanized cond.ø A B bolt kn ka 1s kg /4 13,6-16, , /3 13,6-16, , /3 13,6-16, ,50 The stated values of breaking load refer to the straps, including connecting pieces. The retaining force of the clamp depends on the conductor configuration. Double wedge tension clamps have a connecting bolt that is made of steel and ensures that abrasion is limited, when connected with the steel eyes. Other dimensions are available upon request. Bolted type tension clamp for aluminium based conductors material: aluminium, casted; steel, hot dip galvanized cond.ø A bolt U-bolts kn ka 1s kg ,0-13, X M , /1 7,0-15, X M , /10 8,0-18, X M , ,0-16, X M , /10 12,0-25, X M , /11 12,0-29, X M , /11/1 12,0-29, X M , ,0-20, X M , /10/1 18,0-35, X M , /10/2 18,0-35, X M , /10 18,0-35, X M ,70 Thestatedvaluesofbreakingloadrefertotheclampfork, including connecting pieces. The retaining force of the clamp depends on the conductor configuration. Clamps made of malleable iron for copper and steel conductors are available upon request. Other versions or dimensions are available upon request.

27 TENSION CLAMPS AND JOINTS 5 82 Heliformed dead end with thimble and reinforcing rods for aluminium based conductors material: aluminium, casted; steel, hot dip galvanized cond.ø mm A B1 B2 C ,25-8, , ,54-10, , ,47-11, , ,51-12, , ,51-13, , ,27-14, , ,51-15, , ,51-16, , ,81-17, , ,81-18, , ,51-19, , ,71-21, , ,29-22, , ,01-23, , ,01-23, , ,61-24, , ,41-25, , ,21-27, ,60 These articles are based on right-hand-layed conductors. Articles for left-hand-layed conductors are available upon request. Dead ends for ACS-strands in the outer layer are available upon request. Dead Ends for ADSS-conductors are available upon request. Other dimensions are available upon request. kg

28 5 TENSION CLAMPS AND JOINTS Compression dead end clamps and compression joints Compression fittings can be supplied in many variants: e.g. - clamps with bore holes for the filling with grease - with twisted connection devices for quadruple bundles - with a welded cable lug - with an elongated cable lug as abrasion protection for vertical two bundles - for Aluminium-Steel conductors with only one center wire clamps and joints without steel sleeve can be supplied Compression dead end clamps and compression joints will be adapted to suit the conductor being used very accurately. For this reason, we have only included the DIN conductors as well as conductors using code names which are most commonly used. Compression material for conductors with other material qualities or material types of aluminium can be supplied upon request. Clamps with other conection devices and oval eyes can also be supplied upon request. Compression fittings for ACSR with a big steel core will be delivered with a filler sleeve. MOSDORFER offers compression fittings with internal tube end tapers as well as external tube end tapers, the following pages explain the most common types. Other types upon request. Non tension fittings are also available. Materials for copper upon request. 83 Compression dead end clamp with eye for ACSR according to DIN Standard material: aluminium, extruded; steel, hot dip galvanized cond. Die No. cross section sq mm cond.ø mm Al St A B C D / 20 15, , /1 240/ 40 21, , /S 257/ 60 23, , / 50 24, , / , , / 85 36, ,00 Other dimensions and types are available upon request. kg

29 TENSION CLAMPS AND JOINTS 5 84 Compression dead end clamp with eye for ACSR according to international standards material: aluminium, extruded; steel, hot dip galvanized cond. cross section sq code Die No. cond.ø mm kg Al St A B C D DOG 14, , /1 WOLF 18, , /2 CARDINAL 30, , FINCH 32, , GRACKLE 33, , PHEASANT 35, , MARTIN 36, , BLUEBIRD 44, ,50 Other dimensions and types are available upon request. Compression dead end clamp with clevis for ACSR according to DIN Standard material: aluminium, extruded; steel, hot dip galvanized dimensions in Die No. cond. mm cross section sq mm cond.ø mm Al St A B C bolt kg /2 70/12 11, , /2 50/30 11, , / 20 15, , /55 16, , / 25 17, , /1 105/75 17, , / 30 19, , /30 21, , / 40 21, , /35 22, , /1 257/ 60 23, , / 50 24, , / , , /40 28, , /10/2 435/55 28, , /10 490/65 30, , /2 560/50 32, , /70 32, , /3 680/ 85 36, , /45 43, , /3 1045/45 43, ,90 Other dimensions and types are available upon request.

30 5 TENSION CLAMPS AND JOINTS 85 Compression dead end clamp with clevis for ACSR according to international standards material: aluminium, extruded; steel, hot dip galvanized cond. cross section sq code dimensions in Die No. cond.ø mm mm bolt kg Al St A B C PETREL 11, , LARK 15, , /1 DORKING 16, , PARTRIDGE 16, , /2 WOLF 18, , ORIOLE 18, , /1 LYNX 19, , PELICAN 20, , /1 PANTHER 21, , HAWK 21, , DOVE 23, , PEACOOK 24, , SQUAB 24, , SCOTER 25, , TERN 26, , CONDOR 27, , DRAKE 28, , /6 ZEBRA 28, , /1 CARDINAL 30, , /2 CURLEW 31, , BLUEJAY 31, , FINCH 32, , GRACKLE 33, , PHEASANT 35, , BOBOLINK 36, ,48 Other dimensions and types are available upon request.

31 TENSION CLAMPS AND JOINTS 5 86 Compression dead end clamp with eye for AAAC according to DIN Standard material: aluminium, extruded; steel, hot dip galvanized cond. cross section sq mm cond.ø mm Al A B C D kg , ,90 Other dimensions and types are available upon request. Compression dead end clamp with eye for AAAC according to international standards material: aluminium, extruded; steel, hot dip galvanized cond. cross section sq code cond.ø mm kg Al A B C D SULFUR 33, , ASTER , ,90 Other dimensions and types are available upon request.

32 5 TENSION CLAMPS AND JOINTS 87 Compression dead end clamp with clevis for AAAC according to DIN Standard material: aluminium, extruded; steel, hot dip galvanized cond. cross section sq mm cond.ø mm Al A B C / , , , , , , , , , , , , , , / , , , , / , ,30 Other dimensions and types are available upon request. bolt kg Compression dead end clamp with clevis for AAAC according to international standards material: aluminium, extruded; steel, hot dip galvanized cond. cross section sq code cond.ø mm bolt kg Al A B C ALLIANCE 14, , ASH 17, , CAIRO 19, , SYCAMORE 22, , FLINT 25, , GREELEY 28, , /5 YEW 28, , /1 ALMELEC 31, , RUBUS 31, , ARAUCARIA 37, ,10 Other dimensions and types are available upon request.

33 TENSION CLAMPS AND JOINTS 5 88 Compression dead end clamp with eye for steel and ACS-conductor material: steel, hot dip galvanized cond. cross section sq mm/ cond.ø mm code Al A B C kg ST 50 9, , /1 AW 7 NO. 8 AWG 9, ,50 Other dimensions and types are available upon request. Compression dead end clamp with clevis for steel and ACS-conductor material: steel, hot dip galvanized cond. cross section sq mm/ code cond.ø mm bolt kg Al A B /2 AW 7 NO. 9 AWG 8, , AW 95 12, , AW 19 NO. 9 AWG 14, , ST IV , ,00 Other dimensions and types are available upon request.

34 5 TENSION CLAMPS AND JOINTS 89 Compression joint for ACSR according to DIN Standard material: aluminium, extruded; steel, hot dip galvanized cond. Die No. cross section sq mm cond.ø mm Al St A B /D 44/32 11, , /12 11, , /D 50/30 11, , /15 13, , /20 15, , /1/D 95/55 16, , /D 150/25 17, , /2D 185/32 19, , /30 19, , /35 20, , /D 230/30 21, , /D 210/50 21, , /40 21, , /D 240/40 21, , /D 265/34 22, , /60 23, , /50 24, , /D 300/50 24, , /D 340/30 25, , /100 26, , /D 385/35 26, , /D 380/50 27, , /110 27, , /D 340/110 27, , /D 435/55 28, , /10 490/65 30, , /D 560/50 32, , /D 550/70 32, , /117 35, , /85 36, , /45 43, ,80 The.../D are equipped with external tube end tapers.other dimensions and types are available upon request. kg

35 TENSION CLAMPS AND JOINTS 5 90 Compression joint for ACSR according to international standards material: aluminium, extruded; steel, hot dip galvanized cond. cross section sq code Die No. cond.ø mm kg Al St A B PETREL 11, , MINORCA 12, , PERNICE 14, , DOTTEREL 15, , DORKING 16, , PARTRIDGE 16, , COCHIN 16, , OSTRICH 17, , /1 WOLF 18, , LINNET 18, , /1 LYNX 19, , IBIS 19, , PANTHER 21, , FLICKER 21, , HAWK 21, , HEN 22, , DOVE 23, , PEACOCK 24, , /10 GROSBEAK 25, , BISON 27, , CONDOR 27, , DRAKE 28, , /1 ZEBRA 28, , CARDINAL 30, , /1 CURLEW 31, , BLUEJAY 31, , FINCH 32, , PHEASANT 35, , /1 MARTIN 36, , BOBOLINK 36, , FALCON 39, , CHUKAR 40, , BLUEBIRD 44, ,00 Other dimensions and types are available upon request.

36 5 TENSION CLAMPS AND JOINTS 91 Compression joint for AAAC according to DIN Standard material: aluminium, extruded cond. cross section sq mm cond.ø mm Al dimension in mm A , , , , , , , , , , , , , , , , , , , , , , / , , , , , ,60 Other dimensions and types are available upon request. kg Compression joint for AAAC according to international standards material: aluminium, extruded cond. cross section sq code cond.ø mm Al dimension in mm A ALLIANCE 14, , ELM 18, , CAIRO 19, , SYCAMORE 22, , UPAS 24, , FLINT 25, , GREELEY 28, , YEW 28, , RUBUS 31, ,70 Z ARAUCARIA 37, ,60 Other dimensions and types are available upon request. kg

37 TENSION CLAMPS AND JOINTS 5 92 Compression joint for steel and ACS-conductor material: steel, hot dip galvanized cond. cross section sq mm/ code cond.ø mm Al dimension in mm A ST , AW 38 7, , ST 5/16" 7, , ST , ST 3/8" 9, , ST 9.52 MM 9, , AW 7 NO. 8 AWG 9, , ST 70 10, , ST 7/16" 11, , /1 ST 79 11, , /1 ST 11,80 11, , ST , AW 7 NO. 6 AWG 12, , ST 95 12, , ST 12,70 12, , AW 7 NO. 5 AWG 13, , AW 19 NO. 9 AWG 14, , ST , ,20 Other dimensions and types are available upon request. kg Repair sleeve for aluminium based conductors material: aluminium cond.ø mm Al dimension in mm A , , /2 13,8-14, , ,8-15, , ,6-16, , ,7-17, , /15 17,4-18, , /17 18,5-19, , /18 19,6-21, , /1 21,5-22, , ,9-23, , ,9-25, , ,3-27, , , , ,7-29, , ,6-30, , ,6-32, , ,8-35, , ,4-36, ,50 kg

38 5 TENSION CLAMPS AND JOINTS 93 material: aluminium cond.ø mm Al dimension in mm A ,2-38, , ,8-50, ,22 For damages of maximum 25% of the strands of the outer layer. The repair sleeves are made up of two halves that can be slid over the damaged point of the conductor. In case of major damage, it will be recommended to use heliformed rods. Other types are available upon request. kg Repair sleeve for steel and ACS-conductor material: aluminium cond.ø mm Al dimension in mm A , , , , , , , , , , , , /2 11, , /4 12, ,40 For damages of maximum 25% of the strands of the outer layer. The repair sleeves are made up of two halves that can be slid over the damaged point of the conductor. In case of major damage, it will be recommended to use heliformed rods. kg

39 PARALLEL GROOVE CLAMPS 06

40 6 PARALLEL GROOVE CLAMPS 95 Contents General Parallel groove clamp with serrated grooves, forged, for aluminium based conductors Parallel groove clamp for earthwires and phase tension up to 132 kv, for aluminium based conductors Parallel groove clamp, for steel and copper conductors... 99

41 PARALLEL GROOVE CLAMPS 6 96 General Parallel groove clamps provide electrical connection between two conductors, and mainly used in jumper loops with wedge type suspension clamps. Other applications include branch connection in substations, and ground wire eart continuity connections. Parrallel groove clamps are also used in security loops of suspension strings, where sufficient conductor stabilisation force is required. Loop guidance of a tension string For safety reasons, it is recommended to mount at least two clamps for one loop. Special types are required for vibration damping loops of Brettelle dampers. Clamps for Bretelle dampers see catalogue part 10. Security loop for a suspension string The grooves of parallel groove clamps made of aluminium and designed for low electrical joint resistance and power transmission between conductors. The connection faces have specialised texture surfaces to establish better electrical and mechanical connection. Forged clamps have smooth outer profiles that are particularly suited to higher voltage fields where good corona discharge performance is required. Parallel groove clamp with a dead end cap Parallel groove clamp with a reducing tube Projecting ends of conductors can be protected using end caps to maintain high performance. Parallel groove clamps can be also be manufactured from extruded aluminium alloy, and particularly suited to earth wire applications. For power connections, this type is suitable for voltages 132kV. Clamps can also be provided with grooves of different sizes, with a range of reducing tubes in aluminium and bimetallic material on request (connecting Copper to Aluminium cable). Parallel groove clamps with spacers are obtainable for all bundle configurations. This is advantageous at using wedge clamps for conductor tensioning.

42 6 PARALLEL GROOVE CLAMPS 97 Jumper spacers Parallel groove clamps will also be used for spacing bundle conductors, when wedge type tension clamps are used to fix the conductors. Jumper spacers for twin bundles Various types for all conductor configurations are available upon request. Jumper spacers for triple bundles (left) and four bundles (right) Parallel groove clamps for copper conductors can be delivered in a forged and cast design. All clamps have are manufactured in high corrosion resistance materials, compatible with the conductors. Clamping screws can be supplied in stainless steel or hot dip galvanized steel. Parallel groove clamp for copper conductors

43 PARALLEL GROOVE CLAMPS 6 98 Parallel groove clamp with serrated grooves, forged for aluminium based conductors material: aluminium, forged; steel, hot dip galvanized : screws kg cond.ø A 1PA PA PA PA PA PA PA PA PA ,0-9,9 12,3-12,5 12,6-14,9 15,0-17,1 17,2-19,0 19,1-21,0 21,1-23,4 23,5-25,7 25,8-27, ,28 0,25 0,36 0,40 0,42 0,60 0,83 0,80 0,90 1PA ,9-29, ,80 1PA PA PA ,0-31,9 32,0-33,4 33,0-36, ,20 1,39 2,50 1PA ,0-39, ,40 Parallel groove clamps with reducing and bimetallic are available upon request. Clamps with screws made of hot-dip-galvanized steel grade 8.8 as well as copper clamps can also be supplied. If parallel groove clamps are used for Bretelle dampers, the installation distances can be calculated. Parallel groove clamps with spacers are available for all bundle configurations upon request. The : are for parallel groove clamps with stainless steel bolts A2-F80. Parallel groove clamps with galvanized bolts have a + instead of a - within the number. as an example: 1PA