Definition
The term "RF induction" is traditionally used to describe induction generators designed to work in the frequency range from 100 kHz up to 10 MHz, in practical terms however the frequency range tends to cover 100 to 200 kHz. The output range typically incorporates 2.5 to 40 kW. Generally, the induction heaters in this range are used for smaller components and applications such as induction hardening an engine valve.
The term "MF induction" is traditionally used to describe induction generators designed to work in the frequency range from 1 to 10 kHz. The output range typically incorporates 50 to 500 kW. Induction heaters operating within these ranges are normally utilised on medium to larger components and applications such as the induction forging of a shaft.
The term "Mains (or supply) frequency" is traditionally used to describe induction coils driven directly from the standard a.c. supply. Most mains-frequency induction coils are designed for single phase operation, and are low-current devices intended for localised heating, or low-temperature surface area heating, such as in a drum heater.
Read more about this topic: Induction Heater
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