Electric arc furnace transformer refers to the power supply for electric arc furnaces such as various metals, ore smelting, heat treatment, preparation of alloys, and electroslag return. The electric arc furnace transformer is one of the main electrical equipment of the electric arc furnace. Its function is to reduce the input high voltage of 10-110kV (or even higher) to 100-1200V and then output it to generate a large current to power the arc furnace transformer.
(1) The transformation ratio is large
(2) The secondary current is large
(3) The secondary voltage can be adjusted to meet the needs of the smelting process.
(4) The overload capacity is large, and the transformer has a short-time overload capacity of 20%
(5) Higher mechanical strength
(6) The maximum temperature of the transformer is less than 95°C during operation.
(7) It is stipulated that the primary (high voltage) coil can be connected to both a Y shape and a △ shape, and the secondary (low voltage) coil can only be connected to a △ shape.
(1) Primary rated voltage. There are mainly 6kV, 10kV, 35kV and 110kV.
(2) Secondary voltage. The range is generally between 100 and 1200V.
(3) Rated current. The rated current in the low-voltage side coil remains unchanged; while the current in the high-voltage coil changes with the secondary current.
(4) Power supply frequency. Power frequency f=50Hz/60Hz
(5) Efficiency. Generally, η=95% to 98% for small and medium-sized transformers, and η=99% for large transformers.
