FIELD: heating.
SUBSTANCE: invention relates to the heater with the isolated conductor containing the electric conductor which generates heat being supplied by electric current. The electric insulator, at least, partially surrounds the electric conductor. The resistivity of the electric insulator remains, in essence, constant or increases in time with the generation of heat by the electric conductor. The external electric insulator, at least, partially surrounds the electric conductor.
EFFECT: improved reliability.
17 cl, 12 dwg
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