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Water Cooled Power Cables
We offer high graded Water Cooled Power Cable which is a critical component for the Furnace operation in the Steel Plants. These are manufactured as per various industrial standards keeping in mind the client’s requirements. We test these cables rigidly before supplying them to our clients. Various cables that we offer are as follows:
| Electric Arc Furnace Cables
These are used for supplying electrical current from transformer output i.e. low voltage stationary bus tubes or bus bars to bus bars of the electrode holding arm of the furnace.
The power required for melting operation, passes through the secondary circuit thus, limiting the losses in this circuit, by way of low reactance & be balanced as close as possible between the phases. This balancing of phase eliminates the transposed resistance component which reduces the hotspot problems in the electric arc furnace.
Due to the presence of large fluctuations to which these cables are subjected, the permissible current density should be 4 to 5 A/mm2. |
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Induction Furnace Cables
We design and manufacture Copper High current Water cooled or Air cooled Cables for induction furnaces.
The complete system is calculated to optimise the operational and energy specifications requested by the project.
The conductors can be rigid (water or air cooled tubes or bars) or flexible (water cooled cables, braided connections or laminated shunts). |
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| Water Cooled Power Cables For Smelter Furnace
These cables are available with special anti-corrosive outer covering.
They are used for supply electrical current from transformer output i.e. low voltage stationary bus tubes or busbars to busbars of the electrode holding arm of the furnace. |
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Cable Construction
1.Terminals
Terminals are machined from high conductivity electrolytic copper exacting your busbar size & dimensions. Tin/Silver electroplating is done on the terminals to reduce the contact resistance & increase the current density on the contacting surface. Cooling water is seperately circulated within the terminals to cool inside & outside surface of the conductor.
2.Conductor
Conductors are made from number of stranded ropes. They are laid on the central core in one single lay. Each single strand is made from high conductivity electrolytic copper.
In order to facilitate inter strand movement & to avoid the wear on outer wires, every alternate conductor is protected by a rubber tube, which is perforated, in order to allow cooling water to pass through. The geometric mean radius (GMR) can be increased by increasing the core diameter & the no. of strands & decreasing the individual strand diameter.
3.Central supporting core
The central core is made of hard rubber. Its main function is to support the conductors arranged in a specified pitch, along its periphery & to maintain their shape, despite the applied bending & stress.
This is specially designed by us to ensure greater cooling by means of water flow through the conductors.
4.Outer Water Hose
This water hose is made up of neoprene rubber with fibre glass impregnated on it during vulcanization process. This hose is exclusively designed by BBE as per your requirements & ensuring long cable life. Alongwith, possessing good heat resisting properties, our hose also ensures good flexibility for minimum bend radius as it made of different plies & other suitable material is reinforced on it.
5.Outer Bands & bumpers
The outer bands are made of high tensile strength, non magnetic stainless steel which ensures maximum sealing of the cable. BBE supplies these bands which neither stretch nor loosen up in stringent working conditions.
Rubber bumper halves are clamped together at regular intervals on the hose throughout the length of the cable. These bumpers protect the hose from getting damaged by inter cable collision during the charging operation
Cable Cooling
The water circulating system is in the annular space between the central supporting core & the water hose. The power dissipated is discharged through this system. The specified flow rate & pressure of water must be monitored by means of flow meters; if the circulation of water is inadequate, it is corrected by opening the furnace circuit breaker. |
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| Repair & Restoration Of Water Cooled Power Cables
Since these cables undergo stress & work in stringent conditions, they do require reconditioning & repair, when it is due. We at BBE provide this service, regardless of any make of your cables.
When the cables are received, all the bumpers & outer hose is removed. The copper wire conductors are thoroughly checked. All restrictions such as mineral deposits which block the water passage are removed. New hose is rolled on the cable & then the bumpers are clamped.
If the contact surfaces are deteriorated, then the terminals are machined, cleaned & then tin/silver plated. New core & spring are soldered to the terminals.
Since, we at BBE are well aware with the fact that no one in this industry affords downtime, & hence we believe in quick service. |
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