On Thu, May 30, 2013 at 2:03 PM, Alan Fletcher <[email protected]> wrote:
> > From: "Joshua Cude" <[email protected]> > > Sent: Thursday, May 30, 2013 11:44:00 AM > > >> You want lots of power, you go straight to three-phase. > > > > Right, but I thought the ecat was supposed to provide the lots of > > power. > > Of THERMAL power, yes, not of ELECTRICAL power. > A dryer uses several kW. They never used more than 1 kWe for the ecat. Less than your toaster. Does your toaster use 3-phase. > > > They *changed* the power for the Dec and March runs, and > > never used more than 1 kW, and averaged only 400W. Is that how much > > your dryer consumes? > > When you set up a test rig in a lab environment you design it for the > highest power you MIGHT need. > > The 3-phase-triac December test used 360W > The 1-phase-triac March test used 322W > > A 38W difference? Come on, now. > > I haven't done the arithmetic, but that looks suspiciously like the ratio > between phase1-phase2 and phase1-ground ? > > You CAN get wimpy single-phase dryers, but I wired my house for the > recommended three-phase. > > I'm not getting your point. 360W and 322W are both far below the rating of any mains line. > > > He *did* redesign it. He stopped using the triac, and replaced it > > with a different control circuit. That could most certainly have > > been single-phase, but then how to get them to use the right plug? > > He reprogrammed the controller, and changed the triac wiring from > phase1-phase2 etc to phase1 ground. > I don't call THAT a re-design. > > > The paper says they *replaced* the triac with a control box.
