{"id":10966,"date":"2023-08-29T09:01:32","date_gmt":"2023-08-29T07:01:32","guid":{"rendered":"https:\/\/dv-group.com\/etudes-de-cas\/remplacement-des-variateurs-four-1\/"},"modified":"2023-09-18T16:55:36","modified_gmt":"2023-09-18T14:55:36","slug":"remplacement-des-variateurs-four-1","status":"publish","type":"etudes-de-cas","link":"https:\/\/dv-group.com\/it\/etudes-de-cas\/remplacement-des-variateurs-four-1\/","title":{"rendered":"Obsolescence of the oven\u2019s 7 CC ALSTHOM drives"},"content":{"rendered":"
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Client expectation<\/h4>\n

The obsolescence of the oven\u2019s 7 CC ALSTHOM drives, leading to the unavailability of spare parts, was making maintenance and repair impossible.<\/p>\n

Our client therefore wished to replace these drives.<\/p>\n <\/div>\n <\/div>\n<\/section>\n\n

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DV GROUP <\/strong>Solution<\/strong><\/h4>\n

We suggested the following solution to our client:<\/p>\n

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  • \u00a0A preliminary analysis of the curve of currents used on each movement<\/li>\n
  • \u00a0The replacement of the drive managing both motors simultaneously by two new drives, maintaining synchronisation.<\/li>\n
  • \u00a0The implementation of continuous current MP 4 quadrant drives, which would be long-term and maintainable over time<\/li>\n
  • \u00a0The creation of turntables in the workshop in order to minimise intervention time and the replacement of all the electro-technical equipment, including loop contactors<\/li>\n<\/ul>\n <\/div>\n <\/div>\n<\/section>\n\n\n\n
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    Implementation of 8 drives from 350A to 825A, 4-quadrant technology<\/p>\n <\/div>\n

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    Replacement of the ultra rapid contactors to break the loops<\/p>\n <\/div>\n

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    Preparation for network connection with the oven\u2019s monitoring system<\/p>\n <\/div>\n

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    Analogue steering following this, at the client\u2019s request<\/p>\n <\/div>\n <\/div>\n <\/section>\n\n

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    Work carried out<\/h4>\n
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    • Electro-technical design<\/li>\n
    • Electrical diagrams under See Electrical<\/li>\n
    • Creation of 6 solid-bottomed sheet base frames<\/li>\n
    • Removal of the electrical cupboards<\/li>\n
    • Fitting of the new base frames<\/li>\n
    • Commissioning<\/li>\n
    • Training<\/li>\n<\/ul>\n <\/div>\n <\/div>\n<\/section>\n\n\n