Mica band heaters

Characteristics and advantages: Mica band heaters are a balanced design in terms of performance, size and compactness of construction. They have sufficient mechanical resistance and easy installation. They can be single-piece or multi-piece, with various power supply options and many shape versions.

Construction: Mica band heaters are made of layers of technical mica and stainless steel sheets. The total number of layers in a standard mica band heater is seven. These are three layers of stainless steel sheet on the outside of the band heater and four layers of insulation inside the band. A resistance wire or resistance strip is wound on a flat shaped coil. The tensioning screws and an electrical box with a ceramic terminal block are mounted on the tensioning jacket, or there may be an electrical box with a fixed connection of wires to reinforce the heating spiral. Alternatively, NVS wire outlets can be used. The ceramic terminal block in the electrical box must be in the coldest place and must not be at temperatures exceeding +200 ˚C. Mica band heaters use cables with a nickel core in a glass textile tube protected by a metal braid with a temperature resistance up to +350 ˚C or if necessary, cable with temperature resistance +450 ˚C.