HIGH-SPEED OPERATING MECHANISM OF SWITCHING DEVICE Russian patent published in 2005 - IPC

FIELD: electrical engineering; high-speed electromagnetic operating mechanisms of switching devices.

SUBSTANCE: proposed high-speed operating mechanism has ON-operation mechanism, capacitor, charging device, OFF-operation mechanism coil, controlled switch, diode, and load current sensor. In order to speed up disconnection of short-circuited load, additional circuit set up of second and third capacitors, first and second resistors, as well as pulsed master oscillator, load voltage sensor, and three amplifier-rectifier units are connected in parallel with controlled switch control circuit fed from current sensor; second amplifier-rectifier unit is supplied with power from load voltage sensor and generates cut-off voltage for controlled switch under steady state conditions. Upon occurrence of short circuit across load second amplifier-rectifier unit stops generating cut-off voltage for controlled switch, the latter starts passing current, and OFF-operation mechanism operates.

EFFECT: enhanced speed of operating mechanisms.

1 cl, 1 dwg