ASTM-D3638 › Standard Test Method for Comparative Tracking Index of Electrical Insulating Materials
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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 may be approximate.
1.3 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.
CTI; comparative tracking index; tracking; contamination; tracking resistance; ICS Number Code 29.035.01 (Insulating materials in general)
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