According to the information of the operator of the nuclear power station of Ukraine Energoatom on November 28, 2014 at 19.24 the power unit №3 of Zaporizhya nuclear power station disconnected from the network by the effect of protection against internal damage to the generator. The reason behind the disconnection is damage to winding of transformer of voltage supply section of own needs of the unit which caused disconnection of the transformer of own needs and unit transformer switchers.
Automatics of the protection unit worked in the project algorithm. The unit was transferred into cold state. There are no radiation consequences. Prior evaluation of the level of the event according to the international scale of the nuclear events INES: below the scale/level “0”.
At present the works are ongoing on restoration of electric supply of own needs of the unit. The Schedule of the works provides for connection of the unit to the network on December 5.