Heating device and method of manufacturing a heating device

A heating device comprising:

• a tubular carrier with an outside and with an inside,
• an insulating layer for electrical insulation on said outside of said carrier,
• heating conductors, conductor tracks, and contact fields on said insulating layer,
• a connection device for an electrical connection of said heating device,
• said connection device having a plurality of metallic contact feet,
• said connection device being arranged or attached at said contact fields and being electrically connected to said contact fields with said contact feet,
• wherein an additional electrical insulation is provided between said connection device and said outside of said carrier,
• wherein said additional electrical insulation is firmly connected to said carrier or is arranged firmly on said carrier,
• wherein said additional electrical insulation is a region of said insulating layer, wherein said insulating layer comprises a plurality of individual insulating layers on said outside of said carrier, wherein at least one said individual insulating layer is provided as additional electrical insulation directly between said outside of said carrier and said connection device, wherein directly between said outside of said carrier and said connection device is provided at least one said individual insulating layer less than a total number of said individual insulating layers provided on top of one another,
• wherein said individual insulating layers are not closed all the way round a circumferential direction of said carrier and are at a distance from one another at ends of said individual insulating layers oriented in said circumferential direction or in between, and
• wherein said carrier has a weld seam which runs in a longitudinal direction of said carrier and transversely to a circumferential direction of said carrier, wherein said connection device is arranged above said weld seam and straddles said weld seam at a distance from said weld seam, wherein at least one said individual insulating layer runs over said weld seam.