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Topic: Bundle conductor

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	Electrical conductor - Wikipedia, the free encyclopedia
		A conductor of a given material and volume (length x cross-sectional area) has no real limit to the current it can carry without being destroyed as long as the heat generated by the resistive loss is removed and the conductor can withstand the radial forces.
		In United States, conductors are measured by American wire gauge for smaller ones, and circular mils for larger ones.
		Conductors are usually surrounded by and/or supported by insulators and the insulation determines the maximum voltage that can be applied to any given conductor.
	en.wikipedia.org /wiki/Conductor_(material) (800 words)

	Overhead electrical conductor system including subspan oscillation and aeolian vibration absorber for single and bundle ...
		An absorber 18a extends from the conductor 44 to the conductor 45 and similarly an absorber 18b extends from the conductor 44 to the conductor 46.
		The conductors are arranged on the corners of a square and the absorbers extend between diagonally opposed conductors.
		Upon a disturbance occurring on the conductor 52, the support frame 76, piston and cylinder device 58 and the second conductor 54 constitute a relatively stationary inertial mass and the cylinder 66 is displaced relative to the piston 68 to cause a displacement of working fluid between the chambers 72 and 74.
	www.freepatentsonline.com /4346255.html (4318 words)

	QwikConnect Volume 7, Number 2 - Cover Story - Glenair, Inc.
		Conductors are always metallic to take advantage of the intrinsic high electrical conductivity of metals as well as their advantages in fabrication and mechanical strength.
		The reason for the variation in lay pitch and direction is to control the relative positions of the conductors and thereby the overall dimensions and stability of the conductor bundle.
		Conductor resistance, in turn, depends primarily on the conductor material and dimensions and, to a lesser extent, on geometry.
	www.glenair.com /qwikconnect/vol7num3/coverstory.htm (4857 words)

	Damping spacers for conductor bundles - Patent 4012582
		Each arm of the spacer is bifurcated at the end thereof remote from the conductor clamp to provide a yoke of two parallel arm portions, these parallel arm portions being disposed on both sides of a single arm portion of each arm at the location at which the arm portions are connected together.
		Between conductor 18 and the clamping member are located resilient, elastomer bushing halves 19 that are respectively secured within the clamping halves of the clamping member, the bushing halves being fluted for purposes explained hereinafter.
		Most three conductor bundles are strung in a triangular configuration (in cross section) in which the triangle points downwardly, as shown in FIG.
	www.freepatentsonline.com /4012582.html (3246 words)

	Boatbuilder's Handbook - Electrical Systems
		The bilge pump and its wiring are in the engine compartment and the conductors will run in a bundle of 8 conductors except where they break out of the bundle to go to the pump, a distance of 40 inches from the bundle.
		The conductors go through the engine space in a bundle of 8 conductors, 3 of which are DC and 5 of which are current carrying AC conductors.
		Conductors with a higher insulation temperature rating could be used to reduce the size of the conductor.
	www.uscgboating.org /safety/boatbuilder/electrical/183-435-a2.htm (724 words)

	Jon_Risch's Web Site
		As the magnetic field is expanding through the conductor, it will tend to generate a current flow that is the opposite of the original current flow.
		The amount of current generated by magnetic flux lines cutting through the conductor is proportional to the rate of flux change, hence the faster the currents alternate (the higher the frequency), the more of this self-induced back current is generated.
		Despite the fact that the wires are in close proximity, and that they are being affected by a similar magnetic field as a solid wire, since they trade-off along the length of the conductor bundle, no single strand is always on the inside being exposed to the maximum amount of magnetic field.
	www.geocities.com /jonrisch/c2.htm (1252 words)

	[No title]
		To model a bundle of conductors, you could in principle model each one of them independently, although you would quickly exceed reasonnable limits in terms of memory usage.
		The effects of the separate conductors in the bundle on the computed electromagnetic fields should be quite negligible for computation points located a few bundle diameters away from the bundle.
		Choosing the inner radius of the conductor so that the surface area of a cross-section of the hollow conductor is equal to the total surface area of all the conductors in the bundle reproduces the correct DC impedance.
	www.sestech.com /KBase/article.aspx?id=264&cNode=6T5K8S (315 words)

	Glossary
		A system of conductors (three conductors or three bundles of conductors) through which an electrical current is intended to flow and which may be supported above ground by transmission structures or placed underground.
		Conductor: A metallic wire busbar, rod, tube or cable which serves as a path for electric flow.
		A luminous discharge caused by the ionization of neutral air molecules surrounding the conductor.
	woodlandscoalition.com /Glossary.htm (1661 words)

	Skin Effect and cable impedance
		The insulation ensures that the current flows in all of the wires in the bundle as the charge cannot migrate towards the surface of the bundle.
		Hence the overall properties of the Litz bundle tends to be similar to that of a single wire of the same diameter of the bundle but where ‘skin effect’ is apparently absent.
		Hence a bundle of small packed strands that are in electrical contact can be regarded as similar to a solid but which has some air inclusions which mean that overall wire cross section is only partly filled with conductor.
	www.st-andrews.ac.uk /~www_pa/Scots_Guide/audio/skineffect/page1.html (1496 words)

	CEA Technologies Inc. - State of the Art Report on Spacer Dampers
		It is important to reduce the effects of vibration on overhead lines, as they affect conductor life and can cause damage to conductors and hardware.
		Spacers or spacer dampers are used to control the vibration effects on bundle conductors.
		This state of the art report discusses the salient features of the various types of the spacers and spacer dampers that are commercially available a this time to control vibration induced damage of the bundle conductor lines.
	www.ceatech.ca /pdetails.php?id=5185 (245 words)

	DIY Wire FAQs
		It is not a good practice to bundle wires in a layout, nor have positive voltage or signal wires come in contact with chassis or ground planes.
		The important to remember is the definition of Litz construction, outer conductors are "laid" or braided through the center of the conductor bundle in a sequential pattern.
		Now you take the outer conductor in the left bundle and lay it across the 2 remaining strands in the left bundle.
	home.att.net /~chimeraone/wirefaq.html (4178 words)

	Adhesive Films in Electronics
		Adhesive film is unwound from the roll and applied using the same winding process as core wrap: The adhesive film is spiral wrapped around the wire or conductor bundle as it is braided.
		The insulative layer is extruded around the bundle.
		The heat of this extruded layer activates (melts) the adhesive ands bonds the extruded insulation to the wire / conductor bundle.
	www.adhesivefilms.com /elect_cablewrap.htm (117 words)

	EPRI Portfolio 2006 - P162.002 Advanced HVDC Systems at +/- 800 kV and Above
		Conductor bundles: Questions remain about the optimal conductor selection (type, configuration, and size), number of conductors, and the size of the bundle.
		However, as DC voltages are increased, these issues will require further research and consideration, particularly to elucidate the relationship between conductor bundle trade-offs and corona, AN, and RI.
		While the order of topics directed by members, it is proposed that conductor bundle design, audible and radio interference, long-term performance of line insulation, and the design of transformers be addressed during the first phase of the project.
	www.epri.com /portfolio/product.aspx?id=1437 (1024 words)

	Energy Citations Database (ECD) - Energy and Energy-Related Bibliographic Citations
		The paper presents a generalized physical approach to account for the effect of bundle geometry on critical switching impulse strength of long air gaps.
		It has been applied to conventional symmetrical bundles as well as to more complex open configurations.
		The effect of bundle conductors was investigated for the following basic configurations: conductor-plane, conductor-rod, conductor-tower leg, conductor-tower window as well as phase-to-phase, within a wide range of clearances.
	www.osti.gov /energycitations/product.biblio.jsp?osti_id=218321 (226 words)

	Chimera Labs FAQ
		You take the outer conductor from the right bundle and lay it across the other three remaining strands in the right bundle.
		Now you take the outer conductor in the left bundle and lay it across the four remaining strands in the left bundle.
		You have completed two braids and the left bundle and right bundle is back to four and four strands each.
	www.chimeralabs.com /faq.html (6117 words)

	CEA Technologies Inc. - Field Trials of Galloping Control Devices for Bundled Conductor Lines
		This report documents the activities related to Project 133 T 386, "Field Trials of Galloping Control Devices for Bundle Conductor Lines," from its inception in 1984 to its completion in 1993.
		The main objective of this project is to evaluate the performance of two promising add-on devices to control galloping due to ice and wind on bundle conductor transmission lines.
		A survey of electrical utilities was conducted in 1984 to determine the extent and severity of bundle line galloping.
	www.ceatech.ca /pdetails.php?id=5104 (301 words)

	Havard Engineering Inc. - Conductor Galloping Control (Site not responding. Last check: 2007-10-23)
		These pendulums are designed to suit the mechanical properties of the conductor, the span length, and the conductor tension, and for bundles, the number of subconductors and their spacing.
		Pendulums are masses suspended below the conductor or conductor bundle at several locations across the span.
		The pendulums reduce the number of times the conductors gallop, and when galloping motions do occur, the amplitudes are found to be less than one third the maximum level experienced by normal untreated conductors.
	www.interlog.com /~dhavard/gallop.htm (401 words)

	Alcoa -- Product Catalog: Spacer Dampers - 280000 Series (Site not responding. Last check: 2007-10-23)
		Spacer dampers were originally developed to suppress bundle conductor subspan oscillations that could cause damage to multi-conductor bundle systems.
		The Alcoa Spacer Damper combines the function of a spacer in maintaining conductor separation and the function of a damper in controlling aeolian vibration and oscillation.
		As the conductors move back and forth, there is a potential of the conductors to touch, thus causing significant damage.
	www.alcoa.com /global/en/products/product.asp?prod_id=748 (322 words)

	AudioReview.com's Forum Archives
		In addition, this loss can be reduced by using stranded wire for the conductor to increase the overall area, and by using at least 50-microns of silver-plating on the conductor strands to decrease the resistance in the surface where 92%+ of the signal is conducted.
		Yes, the bundle is located within a dielectric, but the dielectric does not form a hermetic seal around the bundle and therefore, there must be air around, between and in the bundle.
		Any conductor that dives from the surface to the inner part of the bundle must have the highs "stripped" as it were, as the depths of the cable are not a hospitable environment for the highs.
	archive.audioreview.com /03/0EF9530A.php (14345 words)

	Find live wires reliably and safely: News from Kew Technik
		Identifying the live phase conductor in a bundle of cables has long been a headache for electricians - but now the Easy Phase Finder makes finding the live safe and easy every time.
		As the EPF 30's probe is brought into contact with each of the conductors in turn, the voltages are detected and recorded, and when the cables are scanned again, true live is clearly indicated with a red LED light and a continuous audible tone.
		This ability to differentiate true live from other conductors is invaluable when it comes to detecting common faults such as reversed live and neutral in a 230V switched socket outlet.
	www.engineeringtalk.com /news/kew/kew111.html (589 words)

	From 69kV wood pole lines to 500kV lattice tower transmission lines (Site not responding. Last check: 2007-10-23)
		One span of conductor was replaced and groundwire removed from two spans.
		This transmission line upgrade project consisted of replacing approximately 200 wood poles, conductor and performing hardware upgrades on 17.5 miles of the Franklin-Walla Walla No. 1 115-kV transmission line.
		Two new wood pole structures were erected and conductor installed along with overhead groundwire.
	www.wilsonconst.com /specialties-2.htm (564 words)

	Mike Holt
		The allowable conductor ampacities listed in Table 310.16 are based on conditions where the ambient temperature isn’t over 86°F and no more than three current-carrying conductors are bundled together.
		Where the number of current-carrying conductors in a raceway or cable exceeds three, or where single conductors or multiconductor cables are stacked or bundled in lengths exceeding 24 in., the allowable ampacity of each conductor, as listed in Table 310.16, must be adjusted in accordance with the adjustment factors contained in Table 310.15(B)(2)(a).
		Each current-carrying conductor of a paralleled set of conductors must be counted as a current-carrying conductor.
	www.mikeholt.com /videodisplaynew.php?pageid=2969 (288 words)

	VH Audio - Bulk Wire and Cable (Site not responding. Last check: 2007-10-23)
		The internal twisted conductors are shielded with a special foil and tinned copper braid, for maximum RFI rejection.
		Each of the four 12 AWG conductors is made with 19 strands of 25 AWG bare copper, which means excellent contact area when secured to AC plugs.
		Lastly, a clear FEP Teflon jacket encapsulates the four conductor bundle to keep relative movement of the conductors to a minimum.
	www.vhaudio.com /wire.html (1499 words)

	Alcoa -- Product Catalog: Spacer Dampers - 280000HT Series (Site not responding. Last check: 2007-10-23)
		The Alcoa HiTemp™ Spacer Damper combines the function of a spacer in maintaining conductor separation and the function of a damper in controlling aeolian vibration and oscillation.
		The viscoelastic bushings firmly grip the ACSS or ACSS/TW conductor while eliminating possible fatigue breaks of the fully annealed aluminum strands.
		The product is rated for operation up to 250°C. Alcoa has developed spacer damper designs to meet various bundle configurations and installation requirements.
	www.alcoa.com /global/en/products/product.asp?prod_id=702 (370 words)

	[No title]
		Ground wire conductor runningout rollers for use with helicopter
		Single conductor runningout blocks for use with helicopter
		Stretcher for insulate bundle cable with rubber lined self lock clamps
	www.carabelli-italy.it /catalogo1_en.php?articolo=all (440 words)

	Boatbuilder's Handbook - Electrical Systems
		(a) Each conductor or group of conductors that passes through a bulkhead, structural member, junction box, or other rigid surface must be protected from abrasion.
		A conductor or bundle of conductors must have abrasion protection, in addition to its own insulation, where it goes through a hole.
		Is each conductor or bundle of conductors protected from chafe where it passes through a bulkhead, structural member, junction box or other rigid surface?
	www.uscgboating.org /safety/boatbuilder/electrical/183-445-a.htm (147 words)

	Black & Veatch - News / Events - Media Coverage (Site not responding. Last check: 2007-10-23)
		When finished, the line will consist of six-bundle conductor strung on guyed-V steel towers.
		The steel will be darkened by etching to reduce the line's visual impact.
		Sherman and Reilly Inc. (Chattanooga, Tennessee, U.S.) was responsible for designing and manufacturing the large traveler stringing blocks to accommodate the large conductors.
	www.bv.com /news/articles/apr05/aep_constructs.htm (650 words)

	Havard Engineering Inc. - 2006 Workshops (Site not responding. Last check: 2007-10-23)
		The one technical area that is developing is the enhancement of utilities' internal communication systems, and accessing new business opportunities in the communications field, by replacement of overhead ground wires by fibre optic cored cables.
		Power utilities need to have an understanding of the critical factors which may impact on the lives of their lines, and this course provides a comprehensive review of the state of the art in this area.
		He was the Head of the Transmission, Distribution and Structures Unit carrying out R & D work on weather related conductor loads, probability based design methods, management and life extension of wood pole lines, testing of fibre optic ground wires, conductors, line hardware, and large scale civil structures.
	www.interlog.com /~dhavard/2006cors.htm (1093 words)

	Product Information [Power Transmission Lines]Furukawa Electric Co.,Ltd. (Site not responding. Last check: 2007-10-23)
		Contributing to Stable Power Supply Using Advanced Conductor Insulation and Connection Technologies
		Furukawa Electric is providing one of the four submarine cables about 50 km in length and has already finished the laying work.
		This submarine cable is unprecedented in terms of capacity and voltage, and has the world's largest conductors (3,000mm
	www.furukawa.co.jp /english/product/soden1_e.htm (508 words)

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