Low-Cost Solution to a Complex DC Drive Obsolescence Problem at ArcelorMittal Coatesville 140-Inch Plate Mill
(Room 103C)
09 May 17
3:00 PM
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3:30 PM
Tracks:
Lowering the Cost of Maintenance & Reliability
The ArcelorMittal Coatesville drive for the 140-inch plate mill experienced obsolescence problems that caused an increase in downtime, reduced productivity, slower troubleshooting, reduced reliability and a lack of spare parts. Revamping the system to a modern DC drive configuration would be extremely costly. This paper shows another solution, an FCR (Firing Circuit Replacement), which is the one that was taken by ArcelorMittal Coatesville. An FCR is a benefit/cost solution, in which by using modern drive controls units and a highly accurate engineering process and labor intervention, any power topology rectifier can be upgraded without doing a major change on the electrical power installation, thereby keeping the original power bridges and power equipment, and increasing the mill reliability and productivity.