These are the cells, from which the voltage information to be used in measurement devices such as secondary protection relays and voltmeter, analyzer, counter, in distribution busbars of which rated current is up to 1250 A and of which short circuit strength is up to 25 kA.

As a standard, 3 polar and 3 position (open – closed – grounding rod) SF6 gas insulated separators are used in these cells and optionally air insulated, revolving separator might also be used.

Busbar voltage measurement cells are used;