According to information of the Zaporizhzhya NPP operator - Energoatom, on November 28, 2014 at 7.24 pm. (Ukrainian time), Unit №3 of Zaporizhzhya NPP was disconnected from the grid by means of protections against inner generator damages. The incident was caused by damage of the house load voltage transformer coil that led to disconnection of the house load transformer and unit transformer breakers.
The unit protection automatics worked out according to the design procedures. Now it has been rendered to cold state with no objections. No radioactive consequences were recorded. The provisional INES Level "0" rating is assigned for Unit 3.
The works on restoring house load power supply are already underway. As per schedule, unit №3 will be connected to the grid on 5 December.