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Home » Products » Power & Distribution Transformers » Electric Arc Furnace Transformer

Electric Arc Furnace Transformer

Electric Arc Furnace Transformer
Electric Arc Furnace Transformer
Product Code : NETC 16
Brand Name : NATIONAL ELECTRICAL EQUIPMENTS
Product Specifications
  • Minimum Order Quantity
  • Product Type
  • Furnace Transformer
  • Usage
  • In the process of melting scrap metal inside an arc furnace.
Trade Information
  • Payment Terms
  • Cash Against Delivery (CAD), Cash on Delivery (COD), Cash Advance (CA), Cash in Advance (CID), Cheque, Days after Acceptance (DA), Delivery Point (DP), Letter of Credit (L/C), Letter of Credit at Sight (Sight L/C), Telegraphic Transfer (T/T), Western Union, Paypal, Others
  • Main Domestic Market
  • All India
  • Certifications
  • ISO-9001-2008
Product Description

Established in the year 1984, we have been started our journey by manufacturing and exporting supreme quality Electric Arc Furnace Transformer. It is manufactured by making use of high grade materials under the strict direction of our team. This transformer is used for distributing the power in diverse parts of electric arc furnace. Clients can purchase this Electric Arc Furnace Transformer from us at marginal prices.

Features:

  • Long service life

  • Precisely engineered

  • Optimum performance

Specification

Utilizing some of the most advanced technology available in the market, and merging it with our expertise, we are constructing some of the most efficient transformers for AC arc furnaces. Our equipments maintain three-phase heat producing machines with power measures reaching up to a mark of 300 MVA, and initial voltages of up to 132 kV

These equipments are judiciously utilized in almost every steel industry. They help in producing high end steel, which requires optimum levels of power. Working remarkably despite constant electricity fluctuations and short-circuits, allows you to get a fantastic output at all times. Such devices also create special alloys, which generally require three single phase furnace transformers.

Designed using cutting edge technology, allows such machines to have a strong resistance towards electrical, thermal and mechanical stress, thus allowing a glitch-free production flow.

There are a few other points which are to be taken into consideration while developing such instruments. The secondary currents needed for the merging procedure along with a vast number of alternative voltages are to be kept in supervision via an on-load tap changer (OLTC). This can happen either by direct high voltage winding method or with the help of an intermediate booster which is placed in the same tank.

Another alternative which is used quite regularly is the that closure of the optional electrical circuit within the equipment tank, wherein a series of on-load tap changer (OLTC) or a no-load tap changer (NLTC) are utilized, which increases the stability of the arc. Having a powerful reactor, built inside the cabinet. Another option is where the same can be positioned near the transformer.

Due to this result, it becomes exceedingly eliminate the costs of cabling the MV connections which are placed between the device and it’s core. This aids in conducting regular maintenance work without turning off the transformers. The efficiency and effectiveness of this device can always be multiplied.

Our experience and knowledge which we have gained over the years has helped us in gaining an outstanding name for ourselves in the market.

Operation and construction

Construction Point

The arc furnaces which we construct have large capacities, each of which range from fifty to two hundred tons of molten metal per “melt”. Supported by a robust cylinder, they come with along with a refractory-lined steel vessel, which is approximately thirty feet in outside diameter.

With a round roof construction, the furnace has an ability to swing off to the side so as to enable the charging of cold scrap metal present in the chamber with the help of massive buckets (which are in the shape of clam shells) via the hook of an overhead crane.

Once the charging process is completed, the topmost structure will swing back into it’s correct position in a safe manner. After this, three gigantic cylindrical graphite electrodes are supported over triple openings in the shape of a triangle. Fabricated using Union Carbide, such goods are generally around six feet in length and 18 to 24 inches in diameter.

The electrode segregations each have internal threads on each end, along with a graphite connector which helps in joining them together. With the support of air-operated clamps present at the ending of three extended arms, each electrode is raised and lowered manually, or with the help of automated Amplidyne controls. In any scenario where the electrode turns out to be too small, a new region is let out from the auxillary hook onto the crane. Once this is done, the ‘helpers’ work over the heat chamber and screw the new section on the top of the electrode. The clamp is then worked on so that the arm slips upwardly, which increases the required length below the extension.

The movable overhead cranes have a capacity of over 100 tonnes. With the furnace structure being elevated, helps in tapping the molten metal via the refractory-lined ladle left via the far side of the chamber. 

The entire furnace structure was raised above the Melt Shop floor to allow for the tapping of the molten metal into a refractory-lined ladle suspended from a crane on the far side of the heat chamber. The section itself was tilted in order to accomplish this. On the alternate side of the heat enclosure, there is a water-cooled entree which helps the operators which pulls the redundant slag from the section, with the help of steel shoes. The scum falls down through the holes within the pit below. Once cooled it is scooped and removed.

Operation

  • Steel scrap starts melting once the furnace transformer is placed on a lower tap position. The outcome generally comes out to a somewhat less fierce arc, which becomes absolutely important since it keeps the refractory cover of the heat chamber protected from the high hot energy, which comes upto about 600 degrees F.
  • The magnetic forces which are developed via the electrode currents chuck out tiny portions of scrap, thus creating an unpleasant noise. But sooner or later as the scrap portion melts down, a molten pool is made, wherein the tap position is raised, so as to modify the current of the arc and thus speed up the warming process.
  • For the usage in cast engine blocks, the steel waste is refined back into cast iron. Since the latter has a greater carbon content as compared to steel. this additional carbon is mixed with molten metal bath for the furnace at times. How do we attain this? By simply adding molten metal electrodes in the bath while letting them dissolve the additional carbon in the same.
  • In the case where carbon levels come out in excess, the oxygen lance(which is generally a long black steel pipe via which oxygen passes) is cut-in to the open side of the heating instrument so as to burn up and finish off the extra carbon. In the longer run, the tube is then melted off.

NATIONAL ELECTRICAL EQUIPMENTS CORPORATION

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NATIONAL ELECTRICAL EQUIPMENTS CORPORATION
Khasra No. 246/386, 247/1, Bawadi, Sarna Dungar Industrial Area, Jaipur - 302012, Rajasthan, India
Phone :+917210115135
Fax :91-141-2345765
Mr. Saurabh Patawari (Chief Executive Officer)
Mobile :+917210115135

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