ASTM D3638-21e1 PDF

Scope: 1.1 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. 1.2 The values stated in metric (SI) units are to be regarded as standard. The inch-pound equivalents of the metric units are approximate. 1.3 This test method 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 test method. 1.4 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. 1.5 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.

ASTM D3638-21e1 Referenced Document

ANSI/UL 840 Standard for Safety for Insulation Coordination Including Clearances and Creepage Distances for Electrical Equipment
ASTM D1711 Standard Terminology Relating to Electrical Insulation
ASTM D6054 Standard Practice for Conditioning Electrical Insulating Materials for Testing

2021 ASTM D3638-21e1 Standard Test Method for Comparative Tracking Index of Electrical Insulating Materials
2021 ASTM D3638-21 Standard Test Method for Comparative Tracking Index of Electrical Insulating Materials
2012 ASTM D3638-12 Standard Test Method for Comparative Tracking Index of Electrical Insulating Materials
2007 ASTM D3638-07 Standard Test Method for Comparative Tracking Index of Electrical Insulating Materials
1993 ASTM D3638-93(1998) Standard Test Method for Comparative Tracking Index of Electrical Insulating Materials