INGEDRIVE™ MV700 medium-voltage variable speed drive to be used for the mill drive at a greenfield gold mine in East Siberia, Russia.
In the fourth quarter of 2018, The company NCP (New Concept Project) based out of South Africa awarded a contract to Ingeteam for the delivery of one medium-voltage variable speed drive from the INGEDRIVE™ MV700 family with the following characteristics: air-cooled, Integrated rectifier transformer, 24 Pulse diode front end rectifier, five-level HB-NPC Inverter with a power of 3400KW plus starting overload of 150% and output filter with 6 kV output voltage. The scope of supply also includes two by- pass contactors.
The drive configuration for this project known as SBRS (Start Ball, Run SAG) meaning that the VSD is to soft- start with frozen charge detection the ball mill, run up to nominal speed, smoothly connect ball mill to the grid so that the ball mill is operating with fixed speed, then soft- start with frozen charge detection the SAG mill as well as operate the SAG mill with variable speed. Each grinding mill will have an installed power of 3400 KW and the equipment will be delivered during the first quarter of 2019.
Advantages of SBRS (Start Ball, Run SAG) is soft electrical and mechanical start of the ball mill with the advance feature of frozen charge detection as well as the robust and low maintenance squirrel cage Machines.
INGEDRIVE™ is available with power ratings up to 44 MVA, from 400V to 690V in low voltage and 3 kV to 6.6 kV in medium voltage, offering great performance, reliability, together with a user-friendly interface.
Per Thorn | IMD Sales Manager