Why Tracking Resistance Testing Matters More Than Ever
In modern electrical and electronic products, insulation materials face moisture, dust, and contamination every day. Under voltage stress, these contaminants can create conductive paths across surfaces, leading to tracking, carbonization, and ultimately fire hazards.
That’s why tracking resistance testing under IEC 60112 has become a mandatory safety evaluation method for manufacturers of cables, connectors, appliances, and EV components. By measuring CTI (Comparative Tracking Index) and PTI (Proof Tracking Index), engineers can objectively evaluate how materials behave in real-world operating conditions.
What Are CTI and PTI? (Plain English Explanation)
- CTI (Comparative Tracking Index):
Indicates the maximum voltage at which a material can resist surface tracking under standardized contamination. The higher the CTI, the better the insulation performance.
- PTI (Proof Tracking Index):
Confirms that the material can withstand a specified voltage level without failure for a defined number of drops.
Together, CTI and PTI help engineers choose safer materials and comply with flammability and electrical safety standards.
IEC 60112 Explained: What the Standard Really Tests
IEC 60112 simulates long-term surface contamination on insulating materials using a controlled droplet method and platinum electrodes. The test reproduces realistic failure conditions such as:
- Dust + humidity environments
- Salt contamination
- Voltage stress over time
Manufacturers of household appliances, EV components, connectors, terminal blocks, cable insulation, and plastic enclosures rely on this method to prevent insulation breakdown and reduce fire risk.
How a Professional Tracking Index Test Apparatus Improves Compliance Efficiency
A modern Tracking Index Test Apparatus (Flammability Testing Equipment) helps labs:
- Maintain repeatable and accurate CTI/PTI results
- Reduce operator error with PLC intelligent control
- Improve audit confidence for IEC, UL, and GB standards
- Speed up material screening during R&D
For growing manufacturers, investing in professional test equipment means fewer compliance risks and stronger product credibility.
If your team is serious about flammability testing equipment and insulation safety compliance, a reliable Tracking Index Test Apparatus is not just a testing device—it’s a long-term safety investment.
Your message must be between 20-3,000 characters!