FIELD: electrical engineering; control of induction drives. SUBSTANCE: control and protection device of submersible electric pumps, each being connected to independent power switch coupled with fuel level transmitter unit has electric pump control and operation monitoring units and handled liquid flowmeter. Current relay is connected in series with working winding of electric motor. Normally open contacts of current relay are placed in control circuit of motor power switch, current relay release current being taken equal to electric pump no-load current. EFFECT: optimized functioning of submersible pumps with high electric power parameters and protection of pumping part against dry operation by accurate adjustment and coordination of pump operation and hydrotechnical condition of well. 2 cl, 1 dwg
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