FIELD: electricity.
SUBSTANCE: uninterrupted power supply system (50) includes power converter circuit (52) configured to convert alternating input power to the first DC power and to convert second DC power to the first DC power, pack (56) of accumulator batteries configured to supply the second DC current, power transfer mechanism (54) connected to power converter circuit (52) and pack (56) of accumulator batteries which is shifted selectively between open and close positions, at that power transfer mechanism (54) connects pack (56) of accumulator batteries to power converter circuit (52) in closed position and isolates pack (56) of accumulator batteries from power converter circuit (52) in open position, and control circuit (62) configured to transmit control signal, at that power transfer mechanism (54) includes electric drive (60) connected to control circuit (62). At that electric drive (60) responses to control signal by changing power transfer mechanism (54) from the open position to the closed one.
EFFECT: improving reliability.
21 cl, 5 dwg
