ASTM D374 PDF

ASTM D Standard Test Methods for Thickness of Solid Electrical Insulation. GeoTesting Express is a provider of Geosynthetic Testing Services – ASTM D, Standard Test Methods for Thickness of Solid Electrical Insulation. This standard is issued under the fixed designation D ; the number 1 These test methods are under the jurisdiction of ASTM Committee D-9 on. Electrical.

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ASTM D / DM – 16 Standard Test Methods for Thickness of Solid Electrical Insulation

Place the gage block on the anvil, and slowly lower the presser foot. Hold the micrometer by this arm in such a way that the FIG. The use of a support structure, which is level and parallel to the anvil, is recommended to minimize such problems. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.

This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Procedures NOTE 3—In the remainder of this section the word test method denotes a combination of both a speci? Record the corrected thickness value.

ASTM D | Testing Services | Standard Test Methods for Thickness of Solid Electrical Insulation

During measurements, check the zero setting frequently. The other procedure uses the dial micrometer as a direct thickness reading instrument.

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If necessary, equip the dial with a revolution counter that displays the number of complete revolutions of the large hand. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Avoid using measurement positions that are less than mils from any specimen edge. Use these test methods except as otherwise required by a material speci? To calibrate a micrometer that will exert a pressure of If practicable, make ten readings. The presser foot and anvil are regarded as in?

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.

This is in contrast to previously d3774 perceptions of the necessity for maintaining constant average pressure. The test methods identi? Current edition approved March 10, Test results using either procedure are not signi? This condition necessitates the cleaning of these surfaces see 7. Design and construction of electrical machinery require that the thickness of insulation be known. If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.

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The reader is directed to seek precision statements in those other ASTM standards that deal with speci? Reverse the rotation so as to open the micrometer 4 to 5 asttm. Use standard gage blocks at points greater than 10 mil. It is possible that combining values from the two systems will result in non-conformance with the standard. A number in parentheses indicates the year of last reapproval.

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Thickness of paper measured with a stack specimen deviates signi? Test Method E does not prohibit the testing of single sheet specimens of paper having nominal thickness under 2 mils. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.

Calculate the arithmetic mean of these ten readings. Equip the balance with an adjustable counterbalance.

If the pressure is too low, discard the spring and replace with a new spring. Summary of Test Methods 4. Warning—Cleaning the presser foot and anvil surfaces as described in 7.