What are the technical requirements for furnace transformer

What is a furnace transformer? What is the function of the transformer for electric furnace? How does a furnace transformer work?

• What is a furnace transformer?

• How does the furnace transformer work?

• What are the technical requirements for furnace transformers?

What is a furnace transformer?

1. The basic function of the furnace transformer is to supply power to the furnace itself. This can reduce high voltage capacity to lower voltage output. This is necessary for electric arc furnace operation. You'll find that some furnaces require 24 volts to operate.

2. This means basic controls over the furnace, such as timers, ignition, circuitry and temperature control. Because the standard voltage output of any house is 120 volts, the transformer will lower your home voltage to the correct amount for use in your furnace.

How does the furnace transformer work?

It also helps to understand the internal mechanism of the transformer. A furnace transformer consists of two systems that make up the wiring of a transformer for electric furnace. The first system is used for the supply voltage and the other for the secondary voltage. If you have a problem with your transformer, you may have to deal with the internal wiring of both systems. Faulty wires can be the cause of furnace failures, so it is necessary to check these wires properly. A standard transformer carrying 120 volts will have black and white supply wires. However, some colors may vary depending on the model of furnace. If you have the manufacturer's instructions handy, consult them.

What are the technical requirements for furnace transformers?

1. As the high-impedance arc furnace only completes the task of scrap steel melting and the liquid steel refining is completed by ladle refining furnace, the secondary output voltage range of electric furnace transformer will be reduced, and generally U2m/U2./2 is selected. Products 3501 and below may adopt linear voltage regulation to simplify the transformer structure, and the product performance and economic indicators will be better than ordinary ultra high power furnace transformers. High impedance EAF transformers are all on-load voltage regulating transformers with constant power output before the common secondary voltage value and constant current output.

2. The electric transformer for electric furnace is designed and manufactured according to the long-term overload of 20%. The calculation of temperature rise and on-load tap switch, outlet terminal, cooler and internal current-carrying conductor should be selected according to 120%I%.

3. In order to reduce the three-phase unbalance of the short network and the loss of the large current loop, it is often required to complete the secondary form connection in the furnace transformer. In the design, as far as possible, the three-phase impedance balance between the low voltage junction bar and the shape connection line should be achieved, and the adjacent metal parts and box walls should be considered without overheating. The short circuit impedance and load loss of the transformer of this structure are larger than those of the same specification.

4. Compared with the traditional ultra-high power electric furnace transformer, the asymmetry of three-phase load change is much smaller. The core structure does not have to leave the "insulation break" like the ordinary ultra-high power electric furnace transformer, but the metal structural parts must be connected reliably and the contact area is enough to avoid discharge or overheating.

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