English: 1 – HV part of main insulator formed as dielectric glass; 2 – flange; 3 – main separation part between HV and LV; 4 – LV part of main insulator; 5, 6 – internal and external thread; 7 – control winding; 8 – ferromagnetic core; 9 – reed switch; 10 – capsule for reed switch rotation; 11 – conducting coating of external surface of capsule 10 and internal surface of LV part of main insulator 4; 12 – LV bushing; 13 – reed switch mounting plate; 14 – HV bushing; 15 – reed switch position fixation element; 16 – dielectric nut; 17 – lower layer of epoxy compound with cooper powder (60-70%); 18 – dielectric epoxy resin.