ASTM-D3756 2010

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D3756-97(2010) Standard Test Method for Evaluation of Resistance to Electrical Breakdown by Treeing in Solid Dielectric Materials Using Diverging Fields

Published By	Publication Date	Number of Pages
ASTM	2010	6

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Categories: 29.035.01 - Insulating materials in general, ASTM

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Description

1.1 This test method covers the evaluation and comparison of the resistance of solid organic dielectric materials to the initiation or growth, or both, of tubular tree-like channels resulting from partial discharge (corona) and molecular decomposition that occur in the region of very high, diverging electric fields. ^,

1.2 This test method is primarily for use at a power frequency of 50 or 60 Hz.

1.3 The test may be carried out at room temperature or temperatures above or below room temperature. The temperature should not exceed the softening or melting point of the sample material.

1.4 This test method can be used for any solid material into which needles can be cast, molded, or inserted with heat after molding. The resistance to tree initiation is measured by the double-needle characteristic voltage, which is only applicable to non-opaque materials so that tree can be observed optically. The resistance to tree initiation and growth is reported by the double-needle voltage life, which is applicable to both opaque and non-opaque materials.

1.5 The values stated in SI units are to be regarded as the standard.

1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents
2	Terminology Summary of Method Significance and Use Apparatus Sampling Test Specimens FIG. 1
3	FIG. 2 FIG. 3 FIG. 4
4	Conditioning Procedure
5	Presentation of Results Report Precision and Bias Keywords A1. PREPARATION OF NEEDLE ELECTRODES A1.1 A1.2
6	A1.3 A1.4 A1.5

Additional information

Standard Title	D3756-97(2010) Standard Test Method for Evaluation of Resistance to Electrical Breakdown by Treeing in Solid Dielectric Materials Using Diverging Fields
Published Code	ASTM
Publication Date	2010
Pages Count	6
ICS Codes	29.035.01 - Insulating materials in general

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ASTM-D3756 2010

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