----- Original Message -----
Sent: Tuesday, February 23, 2010 2:50
PM
Subject: [LML] Re: Solid State Contactors
-- SuperSwitch?
re: the ev-200. It's impressive on a
number of metrics: max break current, hold current to name a
couple.
It turns out they have a lower cost line, the
ev-100. This does not have the extra-low hold current feature
and
can't handle quite as big a load. A
mix of ev-200's and ev-100's may be appropriate for a grid.
re: mechanical contactors.
There is a very wide range in specs and mechanical
integrity. Although I went with
the ev-200 myself I suspect a very beefy
white-rodgers would be less likely to have the stuck closed behavior described
below.