Redwing Technologies
REDWING TECHNOLOGIES






 

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Redwing Technologies

  Largest furnace transformers in the world for smelter application destined for S.A.  

Specialist Electrical Engineering Consulting Company Redwing Technologies (Pty) Ltd, acting on behalf of Tamini Trasformatori of Italy, has achieved a remarkable result in special transformer orders and sales in Southern Africa during 2000 and 2001.

Included in these sales is an order from Anglo Platinum for four 56MVA single-phase transformer units for the new Pietersburg smelter. Delivery of the transformer units is planned for October 2002, and it is believed that these will then be the largest single-phase furnace transformers for smelter application in the world, each unit weighing in the order of 130 ton, with a total order value in excess of 3,5 million Euro.

Other furnace transformers recently already supplied by, or ordered to, Tamini include four 18MVA and three 22MVA units for Feralloys; 138MVA unit for Saldanha Steel; three 11MVA for ASA Metals; one 25MVA unit for Dow Chemicals; four 10MVA units for Zimasco and an additional four 10MVA units for Anglo Platinum. Further orders are also anticipated during 2002.

This represents a significant regional market share in this business area for furnace applications.

In most cases Redwing Technologies is also responsible for clearing/ transport to site/full erection of the transformer units and assistance with commissioning.

The upsurge in orders for the Tamini units, which are designed and manufactured in Italy, can be attributable to an increased awareness of the local market situation and requirements coupled with the extensive technical design, flexibility and cost effectiveness of the Tamini Trasformatori organisation for Southern African conditions.

Such qualities ensure that these special transformers can be manufactured and supplied up to the largest power ratings required.

The supply of furnace transformers complements other activities of Redwing Technologies, which include AC and DC arc-furnace technologies (representing Concast Standard of Switzerland) and specialised power system investigations and analyses.

  Mimosa Phase III expansion (Zimbabwe)  

Redwing Technologies were appointed in November 2001 by SSP Mining Consultants as project consultants, for the complete underground electrical reticulation for the new Phase III expansion to the Mimosa Platinum Mine.

Scope of this project includes the initial feasibility design and costing for budget purposes, detailed design, specification and full project management through to final commissioning of the underground electrical supply reticulation (including nine 11kV/550V skid substations), surface compressor house and vent fans, and electrical supply to the main conveyor and primary crusher.

Project completion is planned for 3rd quarter 2002.

  Konkola Copper Mines (Zambia)  

Redwing Technologies have been appointed by KCM to conduct a comprehensive fault and protection relay coordination study for the complete Nchanga, Konkola and Nampundwe Mines, together with the Smelter Company.

Scope of this study includes relay coordination for over 1000 circuit breakers and associated protection relays, with over 30 11 kV incomers to KCM from the supply authority.

  BCL Mine (Botswana)  

Redwing Technologies have been appointed to conduct a comprehensive system study for the complete BCL Plant and Selebi Mine electrical supply.

Scope of this study includes detailed on-site measurements of the power and harmonic conditions through the 11 kV network, and an analysis of the capability of the existing BCL 11 kV reticulation to provide adequate capacity for both existing and predicted future load scenarios, for both normal and contingency supply operation, and to make recommendations to improve the security of supply throughout the plant and mine.

A comprehensive fault study and protection relay coordination exercise will also be conducted for the complete plant and mine recticulation.

The capability of the existing Botswana Power Corporation 220/66/11 kV supply arrangement to provide an adequate capacity for existing and predicted future plant and mine loading will also be analysed.

  Furnace transformers for Zimasco (Zimbabwe)  

Tamini Trasformatori of Italy, in cooperation with Redwing Technologies, have received an order for the supply, transport to site, full erection and commissioning of 4 x 10 MVA single-phase furnace transformers.

Project completion is planned for 2nd quarter 2002.

  Anglo Platinum - Waterval Slag Cleaning furnace transformers  

Tamini Trasformatori of Italy, in cooperation with Redwing Technologies, have received an order for the supply, transport to site, full erection and commissioning of 4 x 10 MVA single-phase furnace transformers.

Project completion is planned for 3rd quarter 2002.

  Sladanha Steel furnace transformer  

Tamini Trasformatori of Italy, in cooperation with Redwing Technologies, have received an order for the supply, transport to site, full erection and commissioning of a 136 MVA three-phase furnace transformer.

Project completion is planned for 3rd quarter 2002.

  Sentrachem furnace transformer (Newcastle)  

Tamini Trasformatori of Italy, in cooperation with Redwing Technologies, have received an order for the supply, transport to site, full erection and commissioning of a 25 MVA three-phase furnace transformer.

Project completion is planned for 4th quarter 2002.

  Driefontein Consolidated(Gold Fields)  

Redwing Technologies have been appointed to conduct a comprehensive system study incorporating eight shaft main intake substations for the Driefontein Gold Mine.

The scope of this study includes detailed on-site measurements of the power and harmonic conditions at each substation supply, an analysis of the effectiveness of existing power factor correction and harmonic filters installed, together with recommendations to improve the optimisation of this equipment and implementation of the proposals.

Project completion is planned for 2nd quarter 2002.


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