Electric actuators for NPP
Electric executive mechanisms “for NPP” manufactured by “Aviaavtomatika” named after V. Tarasov” JSC are exploited successfully at nuclear stations of Russia (Beloyarskaya NPP, Leningradskaya NPP), Ukraine (Khmelnitskaya NPP), and foreign countries.
The enterprise produces single-turn electric executive mechanisms (EEM) of “for NPP” performance, where the following designations are authorized:
The above stated EEM are produced according to Technical specifications:
All EEM have:
All electric mechanisms have limit, position and snap switches, double-ended torque limiting facilities, visual position pointer and manual override, also, MEO body built-on current position sensor — signal converter (SC). MEO-1600AS electric mechanism has built-in current position sensor.
Power supply unit of current sensor (PSCS) is situated beyond MEO. PSCS enters into MEO scope of supply. Besides, mating parts of plug-and-socket connectors of MEO and PSCS enter into scope of supply of MEO. MEO power supply – from three-phase mains 380V 50Hz with grounded neutral. MEO power supply is performed by 220V 50Hz voltage. MEO cover complies with requirements of decontamination solutions stability (composition 7).
All electric actuator have lower mass in comparison with analogues, manufactured in Russia and abroad, what allows to reach higher seismic stability rates of valve.
Torque – 100 Nm.
With 100 Nm torque “under shield of reactor”.
Torque – 125 Nm.
Torque – 250 Nm.
Torque – 500 Nm.
Torque – 1000 Nm.
Torque – 1600 Nm.