CPC F24H 9/2028 (2013.01) [F24H 1/103 (2013.01); F24H 15/124 (2022.01); F24H 15/238 (2022.01); F24H 15/37 (2022.01); H05B 1/0283 (2013.01); H05B 3/04 (2013.01); H05B 3/48 (2013.01); H05B 3/82 (2013.01); F24H 15/132 (2022.01); F24H 15/25 (2022.01); H05B 2203/014 (2013.01)] | 25 Claims |
1. A heater system comprising:
a heater bundle comprising:
a plurality of heater assemblies, each heater assembly comprising a plurality of heater units and an insulating material, each heater unit defining at least one independently controlled heating zone; and
power conductors electrically connected to each of the independently controlled heating zones in each of the heater units; and
a power supply device configured to modulate power to each of the independently controlled heater zones of the heater units through the power conductors, wherein a voltage is selectively and sequentially supplied to each of the independently controlled heating zones at a rate based on at least one operational characteristic of at least one of the heating zones such that a reduced number of independently controlled heating zones receives the voltage at a time or at least a subset of the independently controlled heating zones receive a reduced voltage at all times to reduce leakage current through the insulating material.
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