scope:

Purpose of Coating Electrical Substation Apparatus

Electrical substation apparatus is coated for one or more of the following reasons:

To protect the metal portions of the apparatus from corrosion.

To help a substation blend in with the surrounding environment.

To improve the cosmetic appearance of the apparatus.

To improve or maintain the efficiency of transformer radiators.

To draw attention to important indicators (e.g., circuit breakers or switch open/close indicators that tell operators whether a breaker is open [meaning the circuit is cut out] or closed [meaning the circuit is in service]) or dangerous highvoltage areas (e.g., breaker closure switches, bushing caps).