Siemens is providing detailed design, manufacturing, factory testing, installation, and commissioning of the control and protection system – including the replacement of auxiliary supplies, valve base electronics and measurement unit – and the supply of a control training simulator. (reNews.biz)

The VBE device needs to be externally connected with both a secondary 100V AC synchronous signal for a three-phase voltage transformer and a control system for a 220V DC power. (Google Patents)

The communication between the Valve Base Electronics (VBE) control and the valve electronics at the individual thyristor level are carried out by means of optical fibres, one for firing data and the other for data back. (GEGRID Solutions)