With the continuous evolution of modern power systems toward higher voltages and more complex designs, many engineers ask, “composite hollow core insulators” These insulators are rapidly replacing traditional porcelain and glass units and are widely used in high-voltage switchgear, cable terminations, and instrument transformers. This article provides an in-depth overview of their construction, applications, technical specifications, and performance benefits.
Composite hollow core insulators are made with an epoxy resin fiberglass tube as the core and high-grade silicone rubber sheds on the outside. Their hollow structure allows internal space for other components, such as circuit breakers or surge arresters, making them ideal for high voltage and pressure-bearing applications. These insulators are lightweight, strong, and provide excellent electrical insulation.
Composite hollow core insulators are used in a wide range of high-voltage power system components:
They are especially suitable for outdoor use in polluted, high-altitude, or humid environments.
Parameter | Specification |
---|---|
Rated Voltage | 10kV ~ 800kV |
Mechanical Load | ≥ 40kN (customizable) |
Creepage Distance | ≥ 20mm/kV |
Housing Material | HTV Silicone Rubber |
Core Material | ECR Glassfiber Epoxy Tube |
Test Standards | AC Withstand, Lightning Impulse |
Protection Rating | IP65 ~ IP68 |
Operating Temperature | -40℃ ~ +60℃ |
WishPower composite hollow core insulators comply with IEC 61462, GB/T 22066, ANSI C29.11, and are ISO9001 certified with third-party test reports to ensure quality and performance.
Composite hollow core insulators have become essential in high-voltage power infrastructure due to their superior performance and structural reliability. WishPower delivers high-quality, standard-compliant insulators fit for global grid expansion and upgrades.
WishPower is a professional supplier of power system equipment. If you have procurement needs, please contact us for product quotations. Custom services are available.