ewz plans to equip its substations with mobile emergency power systems (NEA) in the next few years. The determination of the aggregate size is based on its switchable power in the first load step (50%) and the minimum short-circuit current that needs to be achieved. On the basis of these calculations, 2 performance variables resulted. Type 1 135kVA and Type 2 160kVA mains replacement diesel generators. Emergency diesel system and cables up to the interface (junction box) must be delivered and put into operation. The exact scope of the services is defined in the tender documents. Six of the substations are located in the city of Zurich and two in Graubünden.

ewz plans to equip its substations with mobile emergency power systems (NEA) in the next few years. The determination of the aggregate size is based on its switchable power in the first load step (50%) and the minimum short-circuit current that needs to be achieved. On the basis of these calculations, 2 performance variables resulted. Type 1 135kVA and Type 2 160kVA mains replacement diesel generators. Emergency diesel system and cables up to the interface (junction box) must be delivered and put into operation. The exact scope of the services is defined in the tender documents. Six of the substations are located in the city of Zurich and two in Graubünden.