Eldec offers a wide range of mobile and efficient induction heating systems. Our standard systems range in output powers from 5 - 250 kW in igbt power transistor technology, and are used for the manufacturing, service, and repair of electrical apparatuses and gas/steam turbine components. Our compact designs allow minimal space consumption and reduce transport costs in field operations.

Displayed in photos on the left, a 60” diameter turbo generator's rotating fields retaining ring is removed with the Eldec MFG 100 optional heating cables. The windings ends are contained within a shrink ring, which must be heated for removal and installation. These retaining rings are heated to approximately 300°C in 1-1.5 hours, depending upon the size of the part.

The Eldec MFG 100 DA (Dual Output) is the most commonly utilized system for shrink fitting and removal. Using the flexible cable heating output of the MFG 100 DA, this system can remove and apply shrink fit components such as:

• Retaining Rings
• Blower Hubs
• Couplings
• Collector rings
• Commutators

The second output with the Eldec hand held coaxial transformer can be utilized for the inductive heating for removal of:

• Turbine bolts and nuts

Additionally, this output can be utilized for induction brazing of the various electrical connections in the generators stator and rotor fields.

The picture on the left shows the Eldec MFG 100 DA with flexible cable heating output on the left (cables not connected) and the Eldec Hand Held Coaxial Transformer to the right. The units can be outfitted with a quick change output device option that allows either two cable heating devices or two coaxial transformers or a combination of both to be utilized to provide the most flexible heating system for your induction requirements.

Read more about induction brazing in Application of induction heating in electrical engineering industry, which was published in the third issue of Heat Processing published in 2004.