Insulators are indispensable components of the power grid and essential for ensuring its smooth operation. Therefore, the correct installation of insulators is very important. Below, the editor explains the proper installation method for insulators.

Before installation, insulators and wall bushings should be inspected. The porcelain parts and flanges must be intact and free of cracks, and the cemented joints should be complete with securely bonded filler.

Post insulators or wall bushings installed on the same plane or vertical surface should have their top surfaces aligned in the same plane, and their centerline positions should meet the design requirements. The installation centerlines of post insulators in the straight section of a busbar should lie on the same straight line. Their bases or flanges must not be embedded in concrete or plastering. When stacking post insulators, their centerlines should be aligned, the fixings should be secure, and all fasteners should be present. For low-voltage post insulators of the internal glue‑mounted type without a base or top cap, a cushion washer made of rubber or asbestos paper with a thickness of not less than 1.5 mm should be placed between the contact surfaces of the insulator and the metal fixing parts.

The above content is compiled based on practical issues encountered by trainees during their work and is provided for reference. Please communicate and correct any issues as needed.