Hi Bob. 220V/50Hz is single thus 380V is three phase. Typically it is triangle sometimes they used star connection as well. WBR Dmitry. > From: Bob Blick > Date: 2002/06/18 Tue AM 11:26:12 EDT > To: PICLIST@MITVMA.MIT.EDU > Subject: [EE]: Russia 380VAC three phase power Delta or Wye? > > Hi Friends, > > I recently was asked to connect a Russian ion gun to US power. It arrived > new with no documentation. The power input was labeled 380B with a sine > wave symbol. The cable was not terminated in a plug. > > Some reverse engineering led me to believe that a wye was the most likely, > and if carefully attached delta was also possible, although perhaps not at > 380 volts. > > I ended up connecting it to 208 VAC wye and it works fine. Some of the > construction and wiring techniques, and some of the parts contained within > made me very hesitant to hook it to more voltage, especially since the > easiest other option available was 440 VAC. > > My curiosity leads me to pose the question, what configuration does 380 > VAC have in Russia? > > Thanks, > > Bob > > -- > http://www.piclist.com hint: The PICList is archived three different > ways. See http://www.piclist.com/#archives for details. > > > -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.