Multi-layer insulated conductor with crosslinked outer layer

Abstract

An insulated conductor (10) and method for making it are disclosed. The insulated conductor includes an elongate conductor (12) and an insulation system, the insulation system having an extruded inner insulating layer (14) including an aromatic thermoplastic material adjacent the elongate conductor, an extruded intermediate layer (18) adjacent the inner insulating layer, and an extruded outer insulating layer (16) including a crosslinked fluoropolymer adjacent the intermediate layer. The inner insulating layer has a thickness along its length of less than about 0.051 mm (0.002 inch) and has a volume that is less than about 28% of the total volume of the insulation system.

Description

[0001] related application [0002] This application is related to U.S. Application No. 12 / 380,533, also entitled "Multi-Layered Insulated Conductor with Crosslinked Outer Layer," and U.S. Application No. 12 / 380,516, the disclosure of which is incorporated herein by reference. technical field [0003] The present application relates to insulated electrical conductors, and more particularly to multilayer insulated conductors having a crosslinked outer layer covering an inner aromatic polymer layer and one or more tie layers between the crosslinked outer layer and the inner between aromatic layers. Background technique [0004] Electrically insulated wire is often used in environments where the physical, mechanical, electrical and thermal properties of the insulation are subjected to extreme conditions. In many cases, materials used for insulation have desirable properties to achieve good performance in one or more of these properties, but at the expense of compromising one...

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Problems solved by technology

Alternatively, a dry arc trace may also occur and may cause a sudden low impedance shunt

Either can cause huge failures

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