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Composite station post insulators

Most electric power stations transmit electricity via overhead lines, with insulators providing mechanical support and electrical protection. Composite station post insulatorsare usually used on substations and stations for supporting and insulating.

Composite station post insulators

Composite station post insulators used in substation

The two predominant designs are suspension- and post-type, both characterized by angled ‘sheds’ that direct water off the device and maximize the leakage distance between line and tower.

What is the leakage distance?
Leakage distance is the shortest path along the surface of the insulator from conductor to ground.

Ceramic and glass have long been the materials of choice for high-voltage insulators and lightning arresters, offering good resistance to electrical stress and outdoor exposure without significant deterioration.

Nowadays, the market for composite insulators is growing steadily, both in long-rod line applications and composite station post insulators. Composite designs typically use engineered polymers which offer higher mechanical strength, greater design flexibility, reduced weight, and lower breakage rates than ceramic and glass components.

Composite station post insulators are also called polymer post insulator made from silicone rubber with excellent performance.

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