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ASTM D372-00(2006)

(Specification)

Standard Specification for Flexible Treated Sleeving Used for Electrical Insulation (Withdrawn 2012)

Standard Specification for Flexible Treated Sleeving Used for Electrical Insulation (Withdrawn 2012)

ABSTRACT
This specification covers electrical insulating sleeving suitable for use on lead wires and in connections in electrical apparatus, such as motors, transformers, and switch gears. Materials are limited to a flexible tubular product made from a woven textile fiber base, such as cotton, rayon, nylon, or glass, thereafter impregnated, or coated, or impregnated and coated, with a suitable insulating material. Sleeving is categorized by the type of coating, base fabric material, dielectric breakdown voltage, temperature index, minimum wall thickness, and inside diameter. According to type of coating and base fabric material, the sleeving is classified into seven types: Type I, Type II, Type III, Type IV, Type V, Type VI, Type VII. On the other hand, the sleeving is classified into four grades according to its minimum average dielectric breakdown voltage: Grade A, Grade B, Grade C, and Grade C-2. Different tests shall be performed in order to determine the following physical properties of sleeving: dimensions, color, defect, flammability, push-back resistance after heat aging, and flexibility after heat aging.
SCOPE
1.1 This specification covers electrical insulating sleeving suitable for use on lead wires and in connections in electrical apparatus, such as motors, transformers, and switch gears.
1.2 Materials under this specification are limited to a flexible tubular product made from a woven textile fiber base, such as cotton, rayon, nylon, or glass, thereafter impregnated, or coated, or impregnated and coated, with a suitable insulating material.Note 1
This standard resembles IEC 60684-3-400 to 408 in title only. The content is significantly different.
WITHDRAWN RATIONALE
This specification covers electrical insulating sleeving suitable for use on lead wires and in connections in electrical apparatus, such as motors, transformers, and switch gears.
Formerly under the jurisdiction of ASTM Committee D09 on Electrical and Electronic Insulating Materials, this specification was withdrawn in April 2012. This standard is being withdrawn without replacement due to its limited use by the industry.

General Information

Status
Withdrawn
Publication Date
31-Mar-2006
Withdrawal Date
31-Mar-2012
ICS
29.035.01 - Insulating materials in general
Technical Committee
D09 - Electrical and Electronic Insulating Materials
Drafting Committee
D09.07 - Electrical Insulating Materials
Current Stage
Ref Project

Relations

Replaces
ASTM D372-00 - Standard Specification for Flexible Treated Sleeving Used for Electrical Insulation
Effective Date
01-Apr-2006

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ASTM D372-00(2006) - Standard Specification for Flexible Treated Sleeving Used for Electrical Insulation (Withdrawn 2012)ASTM D372-00(2006) - Standard Specification for Flexible Treated Sleeving Used for Electrical Insulation (Withdrawn 2012)
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ASTM D372-00(2006) - Standard Specification for Flexible Treated Sleeving Used for Electrical Insulation (Withdrawn 2012)
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
An American National Standard
Designation: D372 – 00 (Reapproved 2006)
Standard Specification for
Flexible Treated Sleeving Used for Electrical Insulation
This standard is issued under the fixed designation D372; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 4.1.1 Type I—A flexible treated sleeving made from
organic-base fibers such as cotton, rayon, or nylon and impreg-
1.1 This specification covers electrical insulating sleeving
natedorcoatedwithaninsulatingmaterialwhichcanbeshown
suitable for use on lead wires and in connections in electrical
by applicable experience or accepted test to have a temperature
apparatus, such as motors, transformers, and switch gears.
index of 105.
1.2 Materials under this specification are limited to a flex-
4.1.2 Type II—A flexible treated sleeving made from
ible tubular product made from a woven textile fiber base, such
inorganic-base yarns such as fibrous glass and impregnated or
as cotton, rayon, nylon, or glass, thereafter impregnated, or
coated with an insulating material which can be shown by
coated, or impregnated and coated, with a suitable insulating
applicable experience or accepted test to have a temperature
material.
index of 130.
NOTE 1—This standard resembles IEC 60684-3-400 to 408 in title only.
4.1.3 Type III—A flexible treated sleeving made from
The content is significantly different.
inorganic-base yarns such as fibrous glass and impregnated or
coated with an insulating material, such as poly(vinyl chlo-
2. Referenced Documents
ride), which can be shown by applicable experience or ac-
2.1 ASTM Standards:
cepted test to have a temperature index of 105.
D350 Test Methods for Flexible Treated Sleeving Used for
4.1.4 Type IV—A flexible treated sleeving made from
Electrical Insulation
inorganic-base yarns such as fibrous glass and impregnated or
D1711 Terminology Relating to Electrical Insulation
coated with an insulating material, such as silicone resin or
D4088 Practice for Preparation for Shipment of Solid Elec-
polytetrafluoroethylene, which can be shown by applicable
trical Insulating Materials
experience or accepted test to have a temperature index of 200.
2.2 IEC Standard:
4.1.5 Type V—A flexible treated sleeving made from
IEC 60684-3 Specification for Flexible Insulating Sleeving
inorganic-base yarns such as fibrous glass and impregnated or
coated with an insulating material, such as silicone elastomer,
3. Terminology
which can be shown by experience or accepted test to have a
3.1 Definitions—For definitions of terms used in this speci-
temperature index of 200.
fication, see Terminology D1711.
4.1.6 Type VI—A flexible treated sleeving made from
inorganic-base yarns such as fibrous glass and impregnated or
4. Classification
coated with an insulating material, such as epoxies, polyesters,
4.1 Sleeving is categorized by the type of coating, base
or acrylics, which can be shown by experience or accepted test
fabric material, dielectric breakdown voltage, temperature
to have a temperature index of 155.
index, minimum wall thickness, and inside diameter, as fol-
4.1.7 Type VII—A flexible treated sleeving made from
lows:
inorganic-base yarns such as fibrous glass and impregnated or
coated with an insulating material which can be shown by
This specification is under the jurisdiction of ASTM Committee D09 on
experience or accepted test to have a temperature index of 180.
Electrical and Electronic Insulating Materials and is the direct responsibility of
4.2 Grades of sleeving are identified in terms of minimum
Subcommittee D09.07 on Flexible and Rigid Insulating Materials.
average dielectric breakdown voltage, as shown in Table 1.
Current edition approved April 1, 2006. Published April 2006. Originally
approved in 1933. Last previous edition approved in 2000 as D372 – 00. DOI: 4.3 Sleeving sizes are shown in Table 2, and are based on
10.1520/D0372-00R06.
thesizeofroundconductorsthatwillfitsnuglyintotheproduct
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
without distortion of the sleeving.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
5. Ordering Information
the ASTM website.
Withdrawn. The last approved version of this historical standard is referenced
5.1 Orders for sleeving shall include the following informa-
on www.astm.org.
tion:
Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
5.1.1 Type and color (Sections 4 and 6),
4th Floor, New York, NY 10036.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D372 – 00 (2006)
TABLE 1 Dielectric Breakdown Voltage Grade Requirements in
9. Number of Tests
Kilovolts
9.1 Certain of the requirements specified, such as thermal
Types
endurance, hydrolytic stability, and effects of solvents, are
Grade Conditioning
1 2345 6 7
considered to be related primarily to the composition of the
A C-48/23/50 min avg 7.0 7.0 8.0 7.0 8.0 7.0 7.0
coating rather than to the processing. The length of time
min ind 5.0 6.0 5.0 6.0 5.0 5.0 5.0
requiredtoevaluatethesepropertiesmaymakeitimpracticalto
A
C-96/23/93 min avg 25 30 50 70 80 30 50
use them for the purpose of lot acceptance. Therefore, the
B C-48/23/50 min avg 4.0 4.0 4.0 4.0 4.0 4.0 4.0
min ind 2.5 2.5 2.5 2.5 2.5 2.5 2.5
following tests are to be used for lot acceptance testing on all
A
C-96/23/93 min avg 20 30 50 70 80 30 50
specimens taken (except as shown), unless otherwise agreed
C C-48/23/50 min avg 2.5 2.5 2.5 2.5 2.5 2.5 2.5
upon between the purchaser and the supplier:
min ind 1.5 1.5 1.5 1.5 1.5 1.5 1.5
C-2 C-48/23/50 min avg 1.5 1.5 1.5 1.5 1.5 1.5 1.5
9.1.1 Dimensions (inside diameter, wall thickness, length),
min ind 0.8 0.8 0.8 0.8 0.8 0.8 0.8
9.1.2 Color,
A
Percentage of average test values found after C–48/23/50.
9.1.3 Visual examination for defects,
9.1.4 Dielectric breakdown voltage (C-48/23/50 and C-96/
23/93),
5.1.2 Grade (Section 4),
9.1.5 Flammability (one specimen only),
5.1.3 Size (Table 2),
9.1.6 Push-back resistance after heat aging (one specimen
5.1.4 Type of put-up (coils, spools, cut lengths, and so
only), and
forth),
9.1.7 Flexibility after heat aging (one specimen only).
5.1.5 Type of packing and packaging (see Practice D4088),
9.2 The number of specimens which are to be tested for
and
each of these properties is specified in Test Methods D350,
5.1.6 Marking, if other than specified in Practice D4088.
unless otherwise noted.
10. Test Methods
6. General Requirements
10.1 Conditioning and testing shall be in accordance with
6.1 Colors shall be as agreed upon between the purchaser
Test Methods D350.
and the supplier.
NOTE 2—Table 6 contains typical values of breakdown voltage reten-
tion for
...

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1.5 The values stated in metric units are to be regarded as standard. Other units (in parentheses) are provided for information.  
1.6 When determining the thermal endurance of rigid EIM, the basic concepts in this standard follow IEEE 1, IEEE 98, and IEEE 101.  
1.7 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. A specific warning statement is given in 11.3.4.  
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ASTM D6194-23(Test Method)
Standard Test Method for Glow-Wire Ignition of Materials

SIGNIFICANCE AND USE
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5.4 This method is suitable, subject to the appropriate limitations of an expected precision of ±15 %, to categorize materials.  
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1.4 This test method measures and describes the response or materials, products, or assemblies to heat and flame under controlled conditions, but does not by itself incorporate all factors required for fire hazard or fire risk assessment of the materials, products, or assemblies under actual fire conditions.  
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. (See IEEE/ASTM SI-10 for further details.)For specific precautionary statements, see Section 9.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific precautionary statements, see Section 9.  
1.7 Fire testing is inherently hazardous. Adequate safeguards for personnel and property shall be employed in conducting these tests.
Note 1: Although this test method and IEC 60695-2-12 differ in approach and in detail, data obtained to determine the glow-wire flammability index (GWFI) using either test method are technically similar. Although this test method and IEC 60695-2-13 differ in approach and in detail, data obtained to determine the glow-wire ignition temperature (GWIT) using either test method are technically similar.  
1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM
ASTM D5374-22a(Test Method)
Standard Test Methods for Forced-Convection Laboratory Ovens for Evaluation of Electrical Insulation

SIGNIFICANCE AND USE
4.1 Ovens used for thermal evaluation of insulating materials are to be capable of maintaining uniform conditions of temperature and air circulation over the extended periods of time that are required for conducting these tests. Specification D5423 specifies the permissible variations from absolute uniformity that have been accepted internationally for these ovens. These test methods include procedures for measuring these variations and other specified characteristics of the ovens.
SCOPE
1.1 These test methods cover procedures for evaluating the characteristics of forced-convection ventilated electrically-heated ovens, operating over all or part of the temperature range from 20 °C above the ambient temperature to 500 °C and used for thermal endurance evaluation of electrical insulating materials.  
1.2 These test methods are based on IEC Publication 60216-4-1, and are technically identical to it. This compilation of test methods and an associated specification, D5423, have replaced Specification D2436.  
1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM
ASTM D3394-16(2022)(Test Method)
Standard Test Methods for Sampling and Testing Electrical Insulating Board

SIGNIFICANCE AND 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.
SCOPE
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM
ASTM D4063-99(2022)(Specification)
Standard Specification for Pressboard for Electrical Insulating Purposes

ABSTRACT
This specification covers pressboard for electrical insulating purposes as well as for dielectrical or structural purposes in transformers and other electrical apparatus. Pressboards under this specification are of three types: Type 1 consists of high-purity (Grade 1.1) calendered pressboards, while Type 2 consists of normal-purity (Grades 2.1.1, 2.2.1, 2.3.1, and 2.3.2) calendered pressboards. Precompressed pressboards (Grades 3.1.1, 3.2.1, and 3.3) fall under Type 3. Not included in this specification, however, are pressboards comprised of two or more sheets laminated together using an adhesive. Pressboards shall be manufactured from unbleached kraft pulp, cotton pulp, or a combination of both, and shall conform to the thickness, density, surface texture (smooth calendered surface for Types1 and 2, and fine-textured finish for Type 3), and color (from tan to blue-gray, depending on the pressboard's grade) requirements specified. The pressboard must also be free of dirt, metal particles, and other foreign material. Tests for apparent density, thickness, moisture and ash content, aqueous extract conductivity, chloride content, tensile strength, pH of aqueous extract, dielectric strength in air and in oil, shrinkage, and compressibility shall be performed and shall conform to the requirements specified.
SCOPE
1.1 This specification covers pressboard for electrical insulating purposes, manufactured from kraft, cotton, or kraft and cotton pulps. This board is intended for dielectrical or structural purposes in transformers and other electrical apparatus.  
1.2 Electrical insulating boards are most commonly referred to (and will be referred to herein) as pressboard. Other terms used for pressboard include transformer board, fuller board, and presspan.  
1.3 This specification covers pressboard having a nominal thickness of 0.030 to 0.315 in. (0.8 to 8.0 mm). For thinner material refer to Specification D1305.  
1.4 The maximum thickness available will differ with the type and the manufacturer. The maximum sheet size will differ with the thickness, type, and manufacturer.  
1.5 Pressboard shall normally be plied wet without pasting. Unless specified by the purchaser, this specification does not include pressboard comprised of two or more sheets that have been laminated together using an adhesive.
Note 1: The materials described in this specification are similar to corresponding types of pressboard described in IEC Specification 641-3, Sheet 1, Types B.0.1, B.2.1, B.2.3, B.3.1, and B.3.3.  
1.6 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.  
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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