Forms of internal separations

Symbols: Busbars, including distribution busbars

 

Form 1

No internal separation

 

Form 2

Separation of busbars from the functional units

 

Form 3

Separations of busbars from the functional units +

Separation of functional units from one another +

Separation of terminals from the functional units

 

Form 4

Separation of busbars from the functional units and terminals +

Separation of functional units from one another +

Separation of terminals associated with a functional unit from those of another functional unit