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ASTM D 1816 Document Information:
Title
Standard Test Method for Dielectric Breakdown Voltage of Insulating Oils of Petroleum Origin Using VDE Electrodes
ASTM International
Publication Date:
Feb 1, 2004
Scope:
This test method covers the determination of the dielectric breakdown
voltage of insulating oils of
petroleum origin. This test method is applicable to liquid petroleum
oils commonly used in cables,
transformers, oil circuit breakers, and similar apparatus as an
insulating and cooling medium. The
suitability of this test method for testing oils having viscosity of
more than 19 cSt, (100SUS) at
40°C (104°F) has not been determined. Refer to Terminology D
2864 for definitions used in
this test method.
This test method is sensitive to the deleterious effects of moisture
in solution especially when
cellulosic fibers are present in the oil. It has been found to be
especially useful in diagnostic
and laboratory investigations of the dielectric breakdown strength of
oil in insulating
systems.(Footnote 2)
This test method is used to judge if the VDE electrode breakdown
voltage requirements are met for
insulating liquids. This test method should be used as recommended by
professional organization
standards such as IEEE C57.106.
This test method may be used to obtain the dielectric breakdown of
silicone fluid as specified in
Test Method D 2225, provided that the discharge energy into the sample
is less than 20 mJ (milli
joule) per breakdown for five consecutive breakdowns.
Both the metric and the alternative inch-pound units are acceptable.
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.
Footnote 2 - Supporting data is available from ASTM Headquarters.
Request RR:D27-1006.
Keywords:
- breakdown voltage
- dielectric strength
- insulating oils
- test cell
- VDE electrodes
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