Dürr has launched a new rectifier – EcoDC MACS – for cathodic electrocoating. The new rectifier provides 50% more power with the same space requirement, making it possible to design the layout of new plants more flexibly and easily increase existing plants’ capacity. It also saves energy and cuts operating and investment costs due to increased efficiency.

The new EcoDC MACS splits the previously large thyristor rectifiers into lots of small rectifier modules, each of which supplies voltage to just a small section of the tank. An advantage of the division into many small units is that EcoDC MACS can control small anode groups down to the individual anode. This allows much more precise voltage regulation in the immersion bath and enables optimized voltage profiles – flexibly designed for many body models.

Dürr has increased the EcoDC MACS’ efficiency up to 96% by replacing the conventional IGBT modules (insulated-gate bipolar transistor) with modern semiconductors made from silicon carbide (SiC). Another innovation is the linear current consumption made possible by the integrated Active Front End (AFE) technology. 

For more information, visit: www.durr.com.