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Multi-layer insulated conductor with crosslinked outer layer

A technology of insulated conductor and layer insulation, applied in the direction of insulated conductors, conductors, insulated cables, etc., can solve major faults, low impedance shunt, impedance reduction and other problems, to improve mechanical properties and arc track impedance, achieve weight and size. Effect

Inactive Publication Date: 2012-01-25
TE CONNECTIVITY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Typically, a leakage current with an initial high impedance aided by the electrolysis liquid present nearby results in a wet arcing track, followed by a decrease in impedance over a period of time, eventually resulting in a high energy short circuit arcing
On the other hand, dry arc traces can also occur and cause sudden low impedance shunts
Either situation can lead to major failure

Method used

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  • Multi-layer insulated conductor with crosslinked outer layer
  • Multi-layer insulated conductor with crosslinked outer layer
  • Multi-layer insulated conductor with crosslinked outer layer

Examples

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example

[0026] The invention is further described with reference to the following examples, which are presented by way of illustration or not of limitation.

[0027] A 20 AWG concentric stranded conductor of ductile copper with an outer diameter of 0.942mm (0.0371 inches) was tinned. PEEK (eg, PEEK 450G from Victrex) was dried at 160° C. in an air circulating oven for 24 hours before extrusion. PEEK tubing was extruded over the conductors using an extruder barrel to a length to diameter ratio (L / D) of 24:1 to achieve an average thickness of 0.048 mm (0.0019 inches).

[0028] The ETFE layer was subsequently extruded on the PEEK. In one embodiment, by mixing a first low melt flow rate, high molecular weight ethylene-tetrafluoroethylene copolymer (available from Asahi Glass Corporation under the trade name Fluon C- 55A, and claims to have a melt flow rate in the range of 4.0-6.7 grams per 10 minutes as measured according to ASTM D1238) and the second highest melt flow rate, low molecul...

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Abstract

An insulated conductor (10) and method for making it are disclosed. The insulated conductor includes an elongate conductor (12) and a two-layer insulation system. The two-layer insulation system has a first insulating layer (14) including an aromatic thermoplastic material adjacent with the elongate conductor. The first insulating layer has a thickness along its length of less than about 0.051 mm (0.002 inch). The insulation system also includes a second insulating layer (16) including a crosslinked fluoropolymer adjacent the first insulating layer. The volume of the first insulating layer is less than about 26% of the total volume of the insulation system.

Description

[0001] related application [0002] This application is related to U.S. Application No. 12 / 380,532 also entitled "Multi-Layered Insulated Conductor with Crosslinked Outer Layer" and to "Method for Extrusion of Multi-Layer Coated Elongate Member," US Application No. 12 / 380,516, both of which were filed on the same date as this application, the disclosures of both US applications are hereby incorporated by reference. technical field [0003] This application relates to insulated electrical conductors, and more particularly, to multilayer insulated conductors having a crosslinked outer layer covering an inner aromatic polymer layer. Background technique [0004] Electrically insulated wires are commonly used in environments where the physical, mechanical, electrical and thermal properties of insulators are tested through extreme conditions. In many cases, the materials used for insulators have qualities that are desirable for good performance in achieving one or more of these ...

Claims

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Application Information

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IPC IPC(8): H01B7/02B29C48/06
CPCH01B7/0275H01B7/0216B29C48/06H01B7/02
Inventor 阿肖克 K 麦汉
Owner TE CONNECTIVITY CORP