SECONDARY COMMUTATOR Russian patent published in 2004 - IPC

FIELD: relay automatics, automation of process of water preparation for thermal power electric stations.

SUBSTANCE: in compliance with invention first commutator has commutation object-control unit with channels of final control relays in which capacity there are used electric-hydraulic relays controlling working valves of filters of water preparation of thermal power stations with employment of programmable-time facility. First commutator and programmable-time facility prepare networks in control unit of final control relays to switch on secondary commutator. First commutator commutates one channel of control unit, at same time interlocking to switch on another channel of commutator is set in action. With switching on of secondary commutator another channel in control unit of final control relays commutates and interlocking of third channel of control unit of final control relays takes place. Simultaneous processing of two channels is carried out at certain section of program by means of contacts of programmable-time facility. This action was impossible before.

EFFECT: widened functional capabilities of secondary commutator.

1 dwg