Although ANSI 52-3 ceramic porcelain suspension insulators are high quality, the ANSI 52-3 ceramic porcelain suspension insulators tests must be done, give a convincing to the customers as like other porcelain disc suspension insulator.

ANSI 52-3 ceramic porcelain suspension insulators are used for medium voltage and high voltage transmission lines, where insulators replace the cross-arm. However, the majority of Porcelain disc suspension insulators are used in power substations where insulators support conductors, bus bars, and equipment.

Older ANSI 52-3 ceramic porcelain suspension insulator is built somewhat similar to cap-and-pin insulators, but with hardware that permits stacking of the insulators to form a high-voltage unit. These units can be found in older stations.

Modern ANSI 52-3 ceramic porcelain suspension insulators consist of a porcelain column, with weather skirts or corrugation on the outside surface to increase leakage distance.

For indoor use, the outer surface is corrugated. For outdoor use, a deeper weather shed is used. The end-fitting seals the inner part of the tube to prevent water penetration.

ANSI 52-3 ceramic porcelain suspension insulators are used at a substation. Equipment manufacturers use the large ceramic insulators to house capacitors, fiber-optic cables and electronics, current transformers, and operating mechanisms. In some cases, the insulator itself rotates and operates disconnect switches.

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