FIELD: mining industry. SUBSTANCE: gear is meant for intensified breakage of hydrate and paraffin plugs in complex holes. Electric heater which working conductors are connected to electrode is lowered into hole on multiconductor cable. Thermal action on matter of plug is conducted simultaneously with application of low-frequency vibration generated by additional gear included in mix of electric heater ( electromagnetic vibrator ). Gear makes it possible to operate both under mode of heating with all six working conductors connected to single-phase source of electric energy and under mode of ohmic resistance of cable when working conductors are connected in pairs in three groups and are linked to three-phase source of energy. EFFECT: improved breaking efficiency of gear. 1 cl, 4 dwg
