Per Phase Isolation (PPI) Distribution Boards

Описание: In the case of standard TPN DB, when earth leakage happens in any of the circuits, main incomer RCD trips, with no power to any of the connected loads. But, is this situation desirable?
What if only that phase, supplying to earth leakage fault, trips; leaving other loads connected to two healthy phases to function as normal? Per Phase Isolation or PPI DB achieves exactly this purpose. In PPI DB, all three phases are electrically isolated with the addition of three sub-incomer RCDs & phase wise separate Neutral Bars. Whenever earth leakage happens in any of the circuits, sub-incomer feeding that phase senses it and trips; leaving other phases and connected loads function without any disturbance. Our range of ready to use PPI DBs come with Neutral Bars and a wire-set comprising 10 color-coded wires as part of the DB