The construction of the bulk heater material follows normal mineral insulated cable practice, with a conductor, or conductors, embedded in a highly compressed mineral insulant which is, in turn covered by malleable metal sheath.

Standard AKINSUN bulk heater material contains as conductors 80% Ni-20% Cr. Alloy and Incoloy 600 sheath. Other sheath and conductor metals are selected according to the application requirements of the cable concerned. The cable is furnished in the fully annealed state.

In order for AKINSUN engineering staff to assist with heater design, it is important to obtain as much information on the intended application as possible. Sufficient information must be provided to define the environment, peak temperature (of the sheath), temperature cycles, instrumentation required (if any), physical dimensions, lead-in (and terminal), arrangements, and the electrical power system capabilities (volts, ampere, phases). This may seem to be an inordinate amount of information but all of these factors are involved in the application of M.I. cable heaters and AKINSUN is ready to assist you as required.