INSULATING TAPE FOR COIL AND INSULATION SYSTEM WITH WINDING TAPE FOR ELECTRICAL MACHINES Russian patent published in 2020 - IPC H01B3/40 H02K3/30 H02K3/40 C08K5/3445 

FIELD: electrical engineering.

SUBSTANCE: invention relates to insulation tape for windings of electric machines impregnated with anhydride-free impregnating epoxy-based resin. At that, resin contains at least mica plates and tape adhesive, where in said insulation tape contains dissolved and/or highly dispersed at least one tape accelerator, which is an adduct of one or more imidazole derivatives selected from the group of imidazoles: 1H-2-methylimidazole (CAS No. 693-98-1), 1H-imidazole (CAS No. 288-32-4), 1H-2-ethylimidazole (CAS No. 1072-62-4), 1H-2-propylimidazole (CAS No. 50995-95-4), 1H-2-isopropylimidazole (CAS No. 36947-68-9), 1H-2-butylimidazole (CAS No. 50790-93-7), 1H-2-isobutylimidazole (CAS No. 61491-92-7), 1H-2-tert-butylimidazole (CAS No. 36947-69-0), 1H-4-tert-butylimidazole (CAS No. 21149-98-4), 1H-4(5)-methylimidazole (CAS No. 822-36-6), 1H-2-ethyl-4-methylimidazole (CAS No. 931-36-2), 1H-4-methyl-2-phenylimidazole (CAS No. 827-43-0), 1H-4-phenylimidazole (CAS No. 670-95-1), 1H-2-phenylimidazole (CAS No. 670-96-2), 1H-5-methyl-2-phenylimidazole-4-methanol (CAS No. 13682-32-1), with one or more acrylate (s). Invention also relates to insulation system, electric motor / generator coil, electric machines and imidazoles. Objects use band accelerator for insulating tape, which can be used in VPI-anhydride-free resins.

EFFECT: insulating tape for coil and insulation system with winding tape for electric machines are proposed.

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