Such boards are made as completely closed metal enclosures, and all the equipment is installed inside it, and it is divided into the following two types:

Metal Clad Panels

This board is made of separate compartments, so if an error occurs in any of the compartments, this error will not spread to other parts. These panels consist of the following four sections:

• Busbar compartment
• Cable head compartment
• Control chamber or LV where measuring and control and protection equipment are placed.
• Key compartment

Compartment Type Panels

They are a type of Metal Enclose boards, where the different compartments are not separated from each other.