Revamping of DC converters for main drives of prefinishing trains GUK2 and VK2 of universal beam mill in a wide-flange beam rolling shop.
The equipment to be replaced has been in use since 1979, which accounts for the fact that when it came to updating it was worn-out and obsolete. Power electric equipment, cooling system were replaced. Control system was replaced by the modern one based on Sinamics DCM CM converters.
Revamping involved execution of the following major activities:
- development of project for replacement of installed equipment by the new one including integration with existent systems;
- production and delivery of water-cooled power rectifiers with total rated current of each assembly unit 10000 A;
- production and delivery of control cabinets for rectifiers;
- production and delivery of cabinets for mill stand motor excitation converters;
- production and delivery of heat exchange stations for power rectifiers;
- production and delivery of diagnostics and signal cabinets;
- dismantling of existent equipment and erection of the new one;
- connection of equipment to electric and water supply systems of the shop;
- commissioning with retention of all existent mill stand operating modes.
Construction and erection and commissioning works were fulfilled in a short time during the run of capital shop equipment repair.