FIELD: electrical engineering.
SUBSTANCE: electric power supply system contains an autonomous power micro-plant (5) equipped with actuation and deactuation devices; the load (1) is connected to industrial electric mains via normally closed contacts of a switching contactor the control winding whereof is connected to the output terminals of the power micro- plant (5) via a matching device (4), the terminals joined to. Additionally connected, with contacts normally opened and sequentially in relation to the load, are current sensors (2) the output signal whereof is supplied to a dual-threshold comparison circuit (3), as well as a commutator (6) the control inputs whereof are connected to the industrial mains while the dual-threshold comparison circuit (3) output is connected to the power micro-plant actuation-deactuation device via the commutator (6).
EFFECT: electric power supply system effectiveness enhancement.
1 dwg
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