Refers to the process where a conductive path gradually forms on the surface of solid insulation materials under the combined effects of an electric field and an electrolyte. The ability of an insulation material's surface to resist tracking is called tracking resistance.
Purpose of the Tracking Test
1. The primary purpose of the tracking resistance test is to simulate whether conductive substances deposited on the surface of insulation materials due to different polarity charged components in household electrical products during actual use can cause surface creeping, breakdown, short-circuiting, and fire hazards.
2. During use, electrical products may experience leakage current due to contamination and moisture on the insulation material surfaces caused by environmental pollution, which can lead to corrosion and damage to the insulation performance.
3. The test specified in this standard is an accelerated test under simulated extreme conditions to evaluate whether the insulation material will develop tracking marks. This allows for distinguishing the tracking resistance of solid insulation materials within a short period, ensuring the safe use of products under specific environmental conditions.
Scope of Application of the Tracking Test
ü This test applies to research, production, and quality inspection departments of lighting equipment, low-voltage electrical appliances, household appliances, machine tool electrical appliances, motors, power tools, electronic instruments, electrical meters, and information technology equipment.
ü It is also applicable to the insulation materials, engineering plastics, and electrical connectors and accessories industries.
Standards for Tracking Test
The tracking test apparatus follows the simulation test procedures specified in IEC 60112: 2003, "Method for Determining the Comparative and Proof Tracking Indices of Solid Insulating Materials."
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Insulation Resistance to Tracking Test Chamber
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