Blog - JingHong

Glass Fiber Series

Comparative Tracking Index (CTI) in Epoxy Insulating Boards

The Comparative Tracking Index (CTI) is a way to tell the difference between epoxy insulating board solutions that are safe and those that pose hidden risks when we talk about electrical safety in industrial settings. CTI checks how well an insulating material keeps its surface from breaking down when it's exposed to electrical stress and contaminants, which can happen in transformers, switchgear, and motor assemblies. Electrical tracking happens when conductive paths form on insulation surfaces because of moisture, dust, or chemical residues. Materials with higher CTI values are better at stopping this. When engineering managers and procurement specialists understand CTI, they can choose materials that will perform consistently under real-world operational stresses. This keeps expensive equipment from breaking down too soon and meets the requirements of UL and IEC standards.

James Yang

Apr 17, 2026

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Glass Fiber Series

Why Halogen-Free FR4 is Becoming the New Industry Standard?

James Yang

Apr 16, 2026

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Glass Fiber Series

Thermal Endurance Comparison: G11 vs. G10 Fiberglass Plates

When comparing how well the G11 fiberglass plate and G10 fiberglass plates hold up against high temperatures, it is clear that the G11 fiberglass plate does better. At temperatures up to 180°C, G11's structure stays strong and its electrical insulation stays in place. G10, on the other hand, stops working around 140°C. You can tell the difference of 40°C because G11's epoxy resin formula has been improved, making it more heat-resistant without weakening it. It is very important for engineering managers and procurement specialists working in areas like power distribution, automotive insulation, and industrial machinery to choose the right material based on its thermal performance. This has a direct impact on the reliability, safety, and operational longevity of equipment in demanding situations.

James Yang

Apr 16, 2026

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Phenolic Series

Surface Polishing and Deburring for Machined Bakelite Parts

Caroline Jia

Apr 16, 2026

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Phenolic Series

How to Prevent Edge Chipping When Routing Bakelite Sheets?

Caroline Jia

Apr 15, 2026

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Glass Fiber Series

Custom Fabricating G11 Parts for Extreme High-Temperature Environments

James Yang

Apr 15, 2026

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Phenolic Series

5 Common CNC Milling Mistakes with Phenolic Cotton Sheets

Caroline Jia

Apr 15, 2026

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Glass Fiber Series

How Hot Press Machines Ensure Void-Free G10 Epoxy Sheets?

James Yang

Apr 14, 2026

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Glass Fiber Series

The Role of 3240 Epoxy Sheets in High-Voltage Transformers

James Yang

Apr 14, 2026

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