Transformers

Furnace Transformer

Transforms high-voltage three-phase grid power into low-voltage, high-current three-phase AC for furnaces used in steel, ferroalloy, calcium carbide and industrial silicon production.

Product type: Furnace Transformer
Cooling options: Oil-immersed air-blast / forced-oil air / forced-oil water
Capacity and voltage: Confirmed for each project

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Description

Furnace transformers supply low-voltage, high-current AC for electric smelting furnaces. Selection depends on furnace type, operating load and site cooling conditions.

Product features

High-quality silicon steel helps reduce no-load losses and noise.
Oxygen-free copper windings use a low current-density design to reduce load losses and temperature rise.
Larger terminal busbar sections and contact areas, together with magnetic isolation measures, help limit eddy-current losses and terminal heating.
Epoxy-cast double sealing is used at the outgoing busbar terminals.
The brochure states overload capability greater than 1.3 times rated load. Permitted duration, cooling conditions and temperature-rise limits must be defined in the project technical agreement.

Model designation guide

H: electric arc furnace; HK: submerged arc furnace; HT: ferroalloy furnace.
D: single-phase; S: three-phase.
F: oil-immersed, air-blast cooling; FP: forced-oil, air cooling; SP: forced-oil, water cooling.
Z: on-load voltage regulation; T: voltage regulation using a regulating transformer.
The final fields identify rated capacity and voltage class.

Information for selection

Furnace type, process, rated capacity, grid-side and furnace-side voltages, and voltage regulation requirements.
Load cycle, short-circuit conditions, cooling, terminal arrangement and site installation dimensions.