What are electrical insulators?
Electrical insulators are hardware fittings used in low, medium and high voltage electrical systems in public services such as overhead power transmission and railway lines. They help ensure that electrical systems operate smoothly and safely.
Electrical insulators are made from a range of non-conductive, durable materials such as glass, porcelain and composite polymers to ensure that the insulators can maintain a high level of resistivity (voltage resistance) at all times.
Types of Electrical Insulators
Electrical insulators come in different sizes and designs to suit the different voltages and fixtures required for different power systems. As they are installed outdoors in all seasons, most electrical insulators incorporate a casing or "petticoat" into their design to ensure that they remain dry and non-conductive in wet conditions.
The most common types of insulators used to assist overhead power lines are: i) Pin insulators; ii) Post insulators; iii) Spool/Shackle insulators; iv) Guy insulators; v) Suspension insulators.
