ASTM D 3638 Standard Test Method for Comparative Tracking Index of Electrical Insulating Materials
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ASTM D 3638 Document Information:
Title
Standard Test Method for Comparative Tracking Index of Electrical Insulating Materials
ASTM International
Publication Date:
Jun 1, 2007
Scope:
This test method evaluates in a short period of time the
low-voltage (up to 600 V) track resistance or comparative tracking
index (CTI) of materials in the presence of aqueous
contaminants.
The values stated in metric (SI) units are to be regarded as
standard. The inch-pound equivalents of the metric units are
approximate.
This standard is technically equivalent to the version of IEC
Publication 112 cited in 2.2. However, the 2007 version of IEC
60112 Fourth Edition yields numerical CTI values that are very
likely to differ significantly from this standard.
This standard does not purport to address all of the safety
problems, 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.
*A Summary of Changes section appears at the end of this
standard.
Keywords:
- CTI
- comparative tracking index
- tracking
- contamination
- tracking resistance
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