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ASTM D3394-16

Current Revision

Standard Test Methods for Sampling and Testing Electrical Insulating Board

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1.1 These test methods cover the sampling and testing of electrical insulating boards. These boards are porous, usually fibrous sheets used for dielectric and structural purposes in electrical apparatus.

1.2 These test methods are not intended for testing vulcanized fibre or molded laminated sheets.

1.3 These test methods are applicable to board materials having a nominal thickness of at least 0.030 in. (0.76 mm).

Note 1: For materials thinner than 0.030 in. (0.76 mm) see Test Methods D202.

1.4 The test methods appear in the following sections:

 


Sections

ASTM Method
Reference

Apparent Density

18 – 23

 

Aqueous Extract Characteristics

36 – 42

D202

Ash Content

43 – 46

T 413

Compatibility with Dielectric
 Liquids

47 – 52

D664, D877, D924,
D971, D974, D1169,
D1500, D1816,
D3455, D3487

Compressibility

79 – 85

 

Conditioning

11

D685

Degree of Polymerization

86 – 89

D4243

Dielectric Strength in Air

53 – 59

D149

Dielectric Strength in Oil

60 – 65

D149, D2413, D3426

Dimensions of Sheets

12 – 17

 

Moisture Content

31 – 35

D644

Oil Absorption

72 – 78

 

Reports

10

 

Sampling

6 – 9

D3636

Shrinkage

24 – 30

D644

Tensile Properties

66 – 71

D202

1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered 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 consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


19.1 Apparent density affects the dielectric and physical characteristics of insulating board and is a factor in the economics of its use in apparatus. This test is useful for specification, design, and quality control purposes.

SDO ASTM: ASTM International
Document Number D3394
Publication Date Nov. 1, 2016
Language en - English
Page Count 10
Revision Level 16
Supercedes
Committee D09.01
Publish Date Document Id Type View
Nov. 1, 2016 D3394-16 Revision
May 1, 2022 D3394-16R22 Reaffirmation
Oct. 1, 2009 D3394-94R09 Reaffirmation
Sept. 1, 2005 D3394-94R05 Reaffirmation
April 10, 2000 D3394-94R00 Reaffirmation