1.1
These test methods cover procedures for testing electrical insulating sleeving comprising a flexible tubular product made from a woven textile fibre base, such as cotton, rayon, nylon, or glass, thereafter impregnated, or coated, or impregnated and coated, with a suitable dielectric material.
1.2
The procedures appear in the following sections:
Procedures
Section(s)
Selection of Test Material
5
Conditioning
6
Dimensions
7
to
11
Dielectric Breakdown Voltage
12
to
17
Brittleness Temperature
18
to
21
Flammability (See Test Methods
D8355
)
22
to
23
Dielectric Breakdown Voltage After Short-Time Aging
24
to
28
Oil Resistance
29
to
32
Thermal Endurance
33
to
39
Compatibility of Sleeving with Magnet Wire Insulation
40
to
54
Solvent Resistance
55
to
60
Hydrolytic Stability
61
to
67
Effect of Push-Back After Heat Aging
68
to
73
1.3
The values stated in inch-pound units, except for °C, are to be regarded as the standard. The values in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.4
This is a fire-test-response standard. See Test Methods
D8355
, which contains procedures for flammability tests.
1.5
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 hazard statements, see
40.2
and
58.1.1
.
Note 1:
This standard resembles IEC 60684-2, Specification for Flexible Insulating Sleeving—Part 2 Methods of Test, in a number of ways, but is not consistently similar throughout. The data obtained using either standard are not necessarily technically equivalent.
1.6
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.
====== Significance And Use ======
12.1
The dielectric breakdown voltage of the sleeving is of importance as a measure of its ability to withstand electrical stress without failure. This value does not correspond to the dielectric breakdown voltage expected in service, but is of value in comparing different materials or different lots, in controlling manufacturing processes or, when coupled with experience, for a limited degree of design work. The comparison of dielectric breakdown voltage of the same sleeving before and after environmental conditioning (moisture, heat, and the like) gives a measure of its ability to resist these effects. For a more detailed discussion, refer to Test Method
D149
.