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Electrically insulating material, insulating paper, and insulating tape for a high voltage rotary machine

An electrical insulating material and technology of insulating materials, which are applied in the directions of heterogeneous insulating materials, inorganic insulators, tools for lathes, etc., can solve the problem of unfavorable thermal conductivity, small thermal conductivity, and limited corona shielding belts. And other issues

Inactive Publication Date: 2013-01-09
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage in this case is that the layer thickness of the corona protection strip is high and the boron nitride particles perpendicular to the corona protection strip have a lower thermal conductivity than in the longitudinal direction of the corona protection strip
As a result, the thermal conductivity of the corona protection tape is disadvantageously anisotropic, whereby the use of the corona protection tape is limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] The invention is explained in more detail below on the basis of examples.

[0013] Electrical insulating materials for high-voltage rotating machines are formed from base resins (Basisharz). A filler powder is provided as the only filler in the base resin, which is distributed as uniformly as possible in the base resin. Another filler in the form of particles is not provided in the base resin. The filler is a filler powder formed of flaky alumina particles.

[0014] The proportion of filler powder in the base resin is between 50 Vol% and 75 Vol%, preferably 70 Vol.%. The filler powder is present with a particle size in the range of 0.002 μm to 150 μm. In addition, the filler powder is present in a monomodal distribution, a bimodal distribution or a multimodal distribution.

[0015] Insulating papers for high-voltage rotating machines are made of this electrical insulating material. In addition, insulating tapes for high-voltage rotating machines are produced from t...

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PUM

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Abstract

The invention relates to an electrically insulating material for a high voltage rotary machine, comprising a base resin and a filler powder distributed in the base resin as the sole filler, formed of disc shaped particles made of aluminum oxide. An insulating paper for a high voltage rotary machine comprises the electrically insulating material. In insulating tape for a high voltage rotary machine comprises a carrier tape and a tape of an insulating paper, wherein the tape of the insulating paper is applied to and secured on the carrier tape.

Description

technical field [0001] The present invention relates to an electrical insulating material for a high-voltage rotating machine, an insulating paper made from the insulating material, and an insulating tape made from the insulating paper. Electrical insulating materials, insulating papers and insulating tapes are suitable for electrical insulation in high-voltage rotating machines. Background technique [0002] High efficiency and high availability are required for high-voltage rotating machines such as turbine generators used in power stations for generating electrical energy. This generally results in a high mechanical, thermal and electrical load on the components of the turbogenerator. Turbine generators have, in particular, stator windings, which place particularly high demands with regard to robustness and reliability. In particular, the insulation system of the stator winding is heavily loaded at the interface between the lamination pack of the stator winding and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B27/20H01B3/02H02K3/38
CPCB32B7/12H02K3/40H01B3/004B32B27/20H01B3/025B32B29/002B32B2264/102B32B2307/206B32B2307/302Y10T428/257
Inventor P.格勒佩尔M.布罗克施密特F.波尔曼
Owner SIEMENS AG