The positive infeeds are normally shown at the top of the diagram, and the
negative ones at the bottom, and, as far as possible, the equipment included in the
diagrams should be drawn between the positive and negative busbars. Because of
the considerable amount of protection and control equipment within a substation, it
is generally convenient to separate out the DC connections into different functional
groups such as control and protection equipment, and other circuits such as motors
and heating.
The positive infeeds are normally shown at the top of the diagram, and thenegative ones at the bottom, and, as far as possible, the equipment included in thediagrams should be drawn between the positive and negative busbars. Because ofthe considerable amount of protection and control equipment within a substation, itis generally convenient to separate out the DC connections into different functionalgroups such as control and protection equipment, and other circuits such as motorsand heating.
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