• Melcon Transformers

Furnace Duty Transformers

Melcon Transformers offers Furnace Duty Transformers. These hi-tech furnace transformers are specially designed to meet varied requirements and are widely appreciated for their excellent efficiency, sturdy construction, and low maintenance quality. These furnace transformers (arc furnace/induction furnace) range up to 4 MVA in capacity. Advanced furnace transformers can be customised as per the requirements of clients. General furnace transformer design requirements include managing very high secondary currents – for steel up to 90 kA and for ferroalloy up to 160 kA electrode current – and a wide secondary voltage range. The secondary voltage is normally regulated by means of an on-load tap changer (OLTC), either directly in the HV winding or in an intermediate circuit of a two-core design (booster regulation) within the transformer tank. Other two-core regulation options are also available, as well as the use of no-load tap changers (NLTC). For extended arc operation in steel furnaces, an additional series reactor with NLTC or OLTC is optional for improved arc stability. The reactor may be built into the transformer tank or installed separately. An additional option for steel furnace operation is closing the secondary phases inside the transformer tank. Applications: steel and casting companies.