SYNCHRONOUS VACUUM SWITCHING DEVICE Russian patent published in 2011 - IPC H01H33/666 H01H83/00 

FIELD: electricity.

SUBSTANCE: switching device has vacuum arc-quenching chambers (VAQC), controlled electromagnet single-phase drives with feedback sensors for each VAQC, block contacts for each drive, a shaft of manual disconnection, a device of electromagnetic drives control, two voltage sensors and one current sensor at each pole of the device, a unit of external synchronisation, which, when a command arrives to disconnect or connect from the external device, does identification of a load type, current mode of its operation and type of planned switching, defines moments of switching, sequence of poles switching and dynamics of contacts movement, forms and supplies control signals with the required warning and accounting of the predicted time of response.

EFFECT: increased reliability of operation, safety of operation and increased switching resource of the device, reduced negative exposure of a switched load, connecting cables and cable couplings.

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