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ASTM D115-14

Standard Test Methods for Testing Solvent Containing Varnishes Used for Electrical Insulation

STANDARD published on 1.11.2014

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The information about the standard:

Designation standards: ASTM D115-14
Note: WITHDRAWN
Publication date standards: 1.11.2014
SKU: NS-16468
The number of pages: 9
Approximate weight : 27 g (0.06 lbs)
Country: American technical standard
Category: Technical standards ASTM

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The category - similar standards:

Varnished fabrics

Annotation of standard text ASTM D115-14 :

Keywords:

build, dielectric strength, drainage, flash point, nonvolatile matter, oil resistance, solvent varnish, specific gravity, temperature index, time of drying, varnish, varnish compatibility, viscosity ,, ICS Number Code 29.035.60 (Varnished fabrics)

Additional information

Significance and Use

4.1 Control—The following tests are useful for control purposes during the manufacture and use of varnishes, and for determining the uniformity of batches:

4.1.1 Specific gravity,

4.1.2 Viscosity,

4.1.3 Flash point, and

4.1.4 Nonvolatile matter by weight.

4.2 Performance—The following tests are useful for determining the performance of varnishes during application and use:

4.2.1 Drainage,

4.2.2 Time of drying,

4.2.3 Build,

4.2.4 Dielectric strength,

4.2.5 Thermal endurance,

4.2.6 Varnish compatibility,

4.2.7 Salt water proofness, and

4.2.8 Oil resistance.

1. Scope

1.1 These test methods cover tests for solvent containing varnishes primarily intended to provide electrical, mechanical, and chemical protection for electrical equipment. These test methods include tests for control and performance as follows:

Procedure

Section

Build

38 – 42

Dielectric Strength

43 – 48

Drainage

26 – 32

Flash Point

18 – 20

Nonvolatile Matter

21 – 25

Oil Resistance

54 – 56

Preparation of Test Specimens

Specific Gravity

9 – 12

Temperature Index

49 – 50

Time of Drying

33 – 37

Varnish Compatibility

51 – 53

Viscosity

13 – 17

1.2 Where the entire test method is included in this standard, the precision and bias are not known unless given in the stated method.

1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.

1.4 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. For specific hazard statements, see Section 5.

Note 1: There is no equivalent IEC standard.

2. Referenced Documents

D295-12	Standard Test Methods for Varnished Cotton Fabrics Used for Electrical Insulation (Withdrawn 2020)
D374-99	Standard Test Methods for Thickness of Solid Electrical Insulation
D580-04	Standard Specification for Greige Woven Glass Tapes and Webbings
D1475-13(2025)	Standard Test Method for Density of Liquid Coatings, Inks, and Related Products
D1932-19(2025)	Standard Test Method for Thermal Endurance of Flexible Electrical Insulating Varnishes
D2518-99	Standard Specification for Woven Glass Fabrics for Electrical Insulation
D2519-19a(2025)	Standard Test Method for Bond Strength of Electrical Insulating Varnishes by the Helical Coil Test (Includes all amendments and changes 12/23/2025).
D3145-20(2025)	Standard Test Method for Thermal Endurance of Electrical Insulating Varnishes by Helical Coil Method
D3251-19(2025)	Standard Test Method for Thermal Endurance Characteristics of Electrical Insulating Varnishes Applied Over Film-Insulated Magnet Wire
D3278-21	Standard Test Methods for Flash Point of Liquids by Small Scale Closed-Cup Apparatus
D3487-25	Standard Specification for Mineral Insulating Liquid Used in Electrical Apparatus
D5032-19(2026)	Standard Practice for Maintaining Constant Relative Humidity by Means of Aqueous Glycerin Solutions
D5423-23	Standard Specification for Forced-Convection Laboratory Ovens for Evaluation of Electrical Insulation
E104-20a	Standard Practice for Maintaining Constant Relative Humidity by Means of Aqueous Solutions (Includes all amendments and changes 12/21/2020).
D56-22	Standard Test Method for Flash Point by Tag Closed Cup Tester
D93-26	Standard Test Methods for Flash Point by Pensky-Martens Closed Cup Tester
D149-25	Standard Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials at Commercial Power Frequencies
D202-23	Standard Test Methods for Sampling and Testing Untreated Paper Used for Electrical Insulation
D287-22	Standard Test Method for API Gravity of Crude Petroleum and Petroleum Products (Hydrometer/Method)

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ASTM D3251-04(2013)..

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