Sehlahisoa sena se loketse 33kV, 35kV, 36kV, AC system metering le tšireletso.
Sehlahisoa se ka sebelisoa ka boithaopo kapa sa kenngoa ka lihlopha tse feletseng tsa likhabinete le li-substations.
Transformer ea hajoale e sebelisa resin ea epoxy e nang le matla a phahameng a matla, mokokotlo oa tšepe oa silicon o tsoang kantle ho naha, matsoelintsoeke a nka terata ea koporo e nang le insulation e phahameng, 'me mokokotlo le tšepe li tšoaroa ka pampiri ea boleng bo holimo ea semiconductor.