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Mica-reinforced insulation

An enhanced mica technology, which is applied in the direction of insulators, inorganic insulators, electrical components, etc., can solve the problems of mica tape dielectric strength weakening, bending radius limitation, and inability to fully meet, so as to improve mechanical strength and flexibility and ensure dielectric strength. Strength and effect of improving partial discharge resistance

Inactive Publication Date: 2011-11-23
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Non-reinforced impregnated or extruded insulation cannot adequately meet this requirement
[0005] The problem with manually wrapping mica tape over contact connections is that the layers of mica tape move during installation, resulting in a decrease in the dielectric strength of the mica tape when the electrical device is in operation
The resulting tube has extremely limited flexibility and thus a very limited bend radius

Method used

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  • Mica-reinforced insulation
  • Mica-reinforced insulation

Examples

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Embodiment Construction

[0032] The drawing shows a partial view of an insulating tube 1 according to the invention, the base body of which is formed from a braided glass tube which is formed as support tube 2 . This braided glass tube 2 is surrounded by a sheath 3, for example made of LSR ( L iquid- S ilicon- R ubber, liquid silicone rubber). The sheath 3 is made, for example, of liquid silicone rubber. This arrangement is immediately surrounded by a mica strip 4 which, with a predetermined number of layers and / or a predetermined overlapping of the individual layers, forms a mica layer with a defined layer thickness. The individual mica strips 4 advantageously each have a defined layer thickness and / or layer width.

[0033] PET ( P oly- E thylen- T errespalat, polyethylene terephthalate) fiber mesh 5 can play a role in mechanical protection.

[0034] The production of the insulating tube 1 takes place in a suitably designed device which allows the layers to be arranged in a defined manner. T...

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Abstract

Mica-reinforced insulating hose (1) for insulating electrical contact connections with a support hose (2), which has a mica tape (4) surrounding it with one or more layers.

Description

technical field [0001] The invention relates to a mica-reinforced insulating tube for insulating electrical contact connections. Background technique [0002] The electrical contact connections of electrical equipment (such as those between motor wiring diagrams or transformer coils) must be adequately insulated from each other and from ground potential, especially at rated voltages exceeding 1 kV. In the case of electrical equipment with a rated voltage range above 1 kV, the contact connections are insulated by hand-wound mica tape. [0003] In the case of low rated voltages (ie less than 1 kV), the insulation is generally achieved by means of known insulating tubes. [0004] However, in the case of high voltage, the insulating tube is required to have a smaller wall thickness, and at the same time, the requirements for its dielectric strength and partial discharge resistance will also increase accordingly. Non-reinforced impregnated or extruded insulation cannot adequate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B3/00
CPCH01B3/08Y10T428/13
Inventor 伯恩哈德·克劳斯纳威利·卢茨
Owner SIEMENS AG