Powerline hardware p608z high voltage forged steel pin. Work on, or within the safety distance of, phase conductors, insulators and associated fittings is outside the scope of this safety instruction and is covered in pssi 4. Helical fittings for overhead power lines ergon energy. The most common methods for transfer of electric power are.
Economical fittings properties and typical values of lv abc aerial bundle cable overhead line systems realized with ensto fittings 7. Scope this technical specification has been prepared by moe. Top quality suspension and jointing equipment manufactured by otds since 1978. Overhead distribution involves the securing of conductors to pin, post and spool insulators. The company founded in 1995, we are professional supplier and manufacturer in electric power fittings, especially on aerial overhead. Limit state design principles for various line components security classes and design working life more detailed coverage on electrical design and earthing using eg0 risk based earthing approach covers steel lattice, steel poles, concrete poles, wood poles and crossarms handbook hb331 published april 2012 amendments to asnzs7000 due to be. Iec and ansi standard sizes, glass and porcelain cap and pin, as well as composite insulators. We supply all kind of power line hardware, inclding strain clamp, stay rod, insulator pin, cross arm, we have passed ce certificate, iso 9001 system, with part of products up to some european and american industrially developed countries level. Specification for overhead line fittings part 1 fittings for 10300mm2 conductors. Production ensto utility networks offers accessories and solutions for. On completion of construction and prior to final commissioning of the overhead line installation the asp is to provide the following as installed detail to ee.
Therefore, the performance ratings of these hose fittings meet the sae requirements. To specify the requirements for overhead line fittings for use on endeavour energys electrical networks. Ss 424 12 41 overhead line material midspan joints. We offer a wide range of hardware and fittings for all types of conductor and voltages from lv networks up to 500kv transmission lines and substations. The overhead line fittings of otds are used for supporting transformers. Installation practices once the route and length of a transmission or distribu tion line has been decided upon and the correct conductor size and type selected to carry the system load safely and economically, there are still several mechanical considera tions which will have an effect on installation practices. Line construction hardware for electric utility and communications outside plant grid construction.
Depending on the line spec ifications our engineers will design the position complete with all the required accessories terminal position beginning or end of the line. Pipe fittings for high pressure application are available. The standard pressure ratings for each thread sizes are based on asme b31. Overhead line hardware overhead line fittings otds.
Wide product offering blackburn has a complete line of splices, taps and terminals for all overhead distribution applications. Gzt acsr conductor matthew for which overhead line fittings uk limited was at the forefront of the design of the relevant fittings in collaboration with national grid. Insulation piercing connectors for overhead lines px. The wcbflow products sline union is leak proof and free of crevices and also consist of two matching ferrules, a gasket, and a clamp. This may include upgrading the line from 275,000 volts to 400,000 volts, or. Clamps can be used as suspension clamps by simply rotating blocks. In this installation we have a terminal pole, which. Attachment c covers work on steel tower overhead lines at all voltages. Overhead line fittings uk ltd power lines installation and. Mechanical parameters of overhead power lines, construction of lines, and.
Helical fittings for overhead power lines endeavour energy. Compression anchor clamps are available either as bolted type suitable for detachable jumper palms or the integral types having angled or straight jumper facility. Overhead line fittings and transmission line fittings. Changing charges produce a changing current, which will increase the current through the transmission line and affect the power factor and voltage drop of the line. Overhead power lines carry voltages ranging from 120 to 750,000 volts. Generally the alloys and hardware used depend on whether the connector is for a. Windinduced vibrations in overhead transmission lines can damage conductors bundled conductor systems are used in overhead transmission lines for highvoltage and extrahighvoltage grids for electrical reasons. Synthetic composite insulator endfitting, silicone rubber housing and. Using 18 905 n 4250 lb, b ased on test data, for metal fittings. Technical specification for helical fittings for overhead powerlines page 6 of 14 specification ets010903 ver 3 ergon energy corporation limited abn 50 087 646 062 nominal holding tension withstand slip of the fittings shall be, 15% of the mcbl of the conductor or 3. This specification covers the design, engineering, manufacture, testing, supply and delivery of. Offset when an assembly of fittings on a pipeline makes one section of pipe out of line and parallel to a second. Pneuedge fittings ensure permanent polyurethane tubing installation without the need for clamps.
High voltage forged steel pin, standard long shank, shanks diameter. Insulator and conductor fittings for overhead power lines performance, material, general requirements and dimensions. Equipment for overhead power lines stringing tesmec. A wide range of hardware and fittings is offered by otds.
Conductor data sheet aluminum conductors steel reinforced acsr approx. C transmission line standards steel towers overhead ground wire assembly 75. When ordering hose assemblies, please keep the terminal end. These requirements demand improved mechanical and electrical performance. Iec61284ed1997 overhead lines requirements and tests for fittings applies to fittings for overhead lines of nominal voltage above 45 kv. While any form of galvanised steelwork can be manufactured to requirements we offer the standard earthing brackets, expulsion fuse switch brackets and transformer platforms. For an electrocution to occur, a path to ground must be created for the current. Refer figure 1 figure 1 ground line protection r manufacturing detail steel pole 12.
Limited free company information from companies house including registered office address, filing history, accounts, annual return, officers, charges, business activity. Overhead line fittings are required for use on overhead systems ranging from lv to 2 kv. After cables are tensioned and sagged to design drawings. Transmission line design manual bureau of reclamation. Copper is used for a variety of applications from electrical parts to electronics to plumbing fittings for the construction industry. Kplc16c 1tsp060361specification for overhead line fittings part 1 fittings for 10300mm2 conductors. Ssen 60305 insulators for overhead lines with a nominal voltage above 1 kv ceramic or glass insulator units for a. Overvoltage travels along the line to the nearest pole where it discharges by igniting an arc between the cros.
Pipe size thread type fitting type pipe size thread type length material pipe schedule pressure rating unilok nace pipe fittings. It is used in a wide range of applications where permanent lowresistance joints are vital these include overhead line conductor connections, cable jointing, transformer and switchgear connections, lightning conductors and many more. Ssen 50341 overhead electrical lines exceeding ac 45 kv. Overhead line installation training statnett overhead line installation training 2day seminar, max. Ssen iso 9001 quality management systems requirements.
About us hebei yipeng line equipment manufacture co. The following part number, phrn08n04nssis designated for reducing hex nipple, 12 mnpt x 14 mnpt, 316ss. It can be used in temperatures from 30 to 120 deg celcius. Each grade stocked by columbia metals offers its own specific advantages. All structures shall have the number of foundation blocks as specified in table 7 in appendices 1 to 5 fitted at a. Alan baxter network rail guide to overhead electrification 2787albguneoh000001 february 2015 rev 10 1 of 52 1. Preassembled fittings some fittings are available with 4dimensionstrut system compatible hex head cap screws and these fittings and finishes will be channel nuts preassembled. Insulator and conductor fittings for overhead power lines performance and general requirements for helical fittings as 12141983 hotdip galvanized coatings on threaded fasteners iso metric coarse thread series as 1222. The seminar provides the relevant detailed theoretical and practical knowledge necessary for ensuring.
Preformed line products australia prides itself on its inhouse, nata accredited test laboratory, for the mechanical testing of overhead power line fittings. Starting with the first overhead power lines in 1882, hand ties of many. Since its establishment in 1961, overhead line fittings uk limited has worked with national grid formerly the cegb, the dnos and their contractors to provide a complete package of materials for the installation and maintenance of overhead transmission and distribution power lines. Work on conductors, insulators and fittings of live hv circuits is outside. The intent of this guide, along with ieee standard 524, guide to the installation of overhead transmission line conductors, is to provide guidance for an optimized installation of overhead conductors. Refining experience is in line with the known factors of hydrogen accelerating fatigue crack growth, and cracking of very hard materials. Helical full tension splices and termination fittings. However, we recommend the use of clamps in applications over 80 psi which also involve heat or vibration.
Wood lane works, nortonjuxtatwycross atherstone warwickshire cv9 3qb tel. Overhead distribution 1 f f 21 1609 1 1 2422483 00 100 c c 22mm hole pole cap pole cap bracket xarm 1 1 f f 500mm f f g. In ac power systems, a transmission line carries a timevarying voltage different in each phase. Ssen 61284 overhead lines requirements and test for fittings. Maximum dc code overall rated resistance name steel total aluminium steel diameter aluminium steel total strength at 20 oc awg or awg or mcm mcm turkey 6. Nuts and bolts are not included with the fittings and must be ordered separately, unless noted. Overhead line construction refurbishment national grid. Pipe fittings 4 how to order unilok pipe fittings are ordered by part number as shown as below. High quality power line hardware, overhead line fittings. With a history of experience and exemplary service, hubbell power systems, inc.
Ground line protection r 500mm above and 500mm below ground line. C101 cuetp electrolytic tough pitch copper c101 cuetp is a commercially pure high conductivity grade of copper. Overhead conductor installation guide general cable. Insulator and conductor fittings for overhead power lines.
Sline fittings wcbflow products sline versatile fittings were originally designed for both cop cleanout ofplace and cip cleaninplace applications. D transmission line standards wood pole structures overhead ground wire assembly 77. Erc3010303 product line e pneuedge barb size refer to connector options below for code suffix 250 14 hex 303stainless steel s. Plp regularly upgrades and replaces test equipment to retain leadership in this area of expertise. Ssen 50326 conductors for overhead lines characteristics of greases. We have sales offices in scandinavia, central europe, baltic countries and russia. Sae and jic flare fittings in hydraulic applications, while sae adapters are commonly brass flare.
All these materials have an expected lifespan, which varies depending on how the ohl is used and where it is located. It located in the famous capital of electric in chinashahe, nearby 107 national road, handan airport and the railway station. Kiessling, f, open pdf file from servlet nefzger p, nolasco j. Download citation overhead line fittings according to 10. Overhead line fittings and transmission line fittings home. Tuofa group is build in 1992, which is the professional creating company in technoloy communication,eletrical power items and telecom. Power line hazards awareness the national work zone. These mechanical connectors consist of service, parallel, and midspan types.
It is possible to order a hose assembly with a fitting terminal end that has a performance rating lower than the hose rating. Otds supply all types of tension and suspension clamps. Pssi 16 opsaf10016 high voltage overhead lines work on. Reduction of fracture toughness due to hydrogen is known but not a practical limitation for the piping conditions and thicknesses typically encountered in refining. Ssen 100451 metallic materials charpy impact test part 1. Overvoltage is induced on the line when lightning strikes an overhead line or its vicinity. May be applied to fittings for overhead lines of lower nominal voltage and to similar fittings for substations.
Otds has been manufacturing suspension and jointing equipment since 1978. Cross fittings may deteriorate when temperatures change, because cross fitting is made at the centre of the four connection points. Refurbishment of an overhead line an ohl is constructed using a variety of materials, from concrete and steel for the foundations, steelwork for the pylon and aluminium and steel for the conductors. This downloadable program contains an electronic catalog in pdf format adobe acrobat reader required linked with 93. Ribe electrical fittings optofit opgw oppc accessories. The hangercad contains a collection of details showing common b line series pipe support applications.
The magnitude of the overvoltage is approximately the same in all phases and may rise to several hundred kilovolts between the phase and earth. Nes fittings are designed to withstand the mechanical and electrical loads that can occur at any levels of voltage in electrical lines. C transmission line standards steel and concrete pole structures overhead ground wire assembly 76. This specification covers the provision of tubular steel supports, crossarms, fittings and accessories suitable for 11kv overhead lines with maximum conductor size 12020 acsr and lv lines with maximum conductor size 120mm2 aac. Pdf a detailed investigation of overhead line insulators. This timevarying voltage causes the changes in charges stored on conductors.
There is a trend toward larger conductors, higher voltages, longer spans and greater ground clearances. In relevant standards, fittings are frequently designated as accessories which may consist of elements or assemblies. Esfi overhead power line safety construction final created date. A dreaded phenomenon in such systems is the occurrence of highfrequency, shortwave vibrations in the. Structure earthing schedule including measured values. A wide variety of overhead line fittings options are available to you, such as hexagon. For the availability of 6000psig and 0psig, contact your local distributors. Specification for construction of hv overhead lines up to 33kv on. Buyer must notify the company promptly of any claim under this warranty. The details display complete hanger assemblies, including upper attachments, clamps, hangers, brackets, and floor stands. Powerline hardware p608z, pins, fittings, overhead products.
1042 238 859 1539 1278 1555 725 132 1400 812 534 675 443 696 1234 364 1566 418 615 1424 143 187 1061 736 862 483 560 452 127 892 893 1244 1327 852 1267 729 1307