Mains synchronised power converter used to control speed of shunt or series exited DC motors. It is going out of fashion, replaced by the Vector drive but still very popular in legacy applications.
Siemens Simoverg Repair
Simoverg is a Siemens drive made in mid 1990s. This was likely the first attempt to build a DC drive with a digital interface. The client is still running a production line where a few of these drives are installed. We have developed a technique to re-build them so they can run for a few more years.
Eurotherm 590 Repair
Eurotherm 590 DC Drive is a modern design. It is no longer in production but it is still very popular as a replacement for old analogue units. Due to compact design quite a few of them fit into a tight space in a switchboard.