The ZaWiSZa Auxiliary Power Supply System is an advanced multi-voltage power source for all systems during normal and autonomous operation of the substation. The solution provides power supply with typical voltages: 230/400V AC, 220V DC, 230V AC-guaranteed, 48V DC (24V DC) for critical internal functions of the station.
The power supply systems are dedicated to power receivers with direct current with rated voltages: 12V; 24V; 48V; 60V; 110V; 220V. The systems may contain VRLA battery packs in a cabinet or cooperate with external field batteries. Thanks to the use of DC/DC converters, it is possible to build a multi-voltage system based on one battery bank. The systems also include DC switchgear.