Ananda Alumni: Mercury relay question [RE-wrenches]
Darryl Thayer
daryl_solar at yahoo.com
Sun May 25 14:32:17 PDT 2008
Hi
I would recomend a solid state relay, I have known of
mercury relays of the old type exploding under short
circuit condtions. Besides the RV is a short lived
product and the result is the mercury in the
environment. I ususally just go to my local graninger
store for my solid state relays.
Darryl
--- "Todd Cory, Mt. Shasta Energy Services"
<toddcory at finestplanet.com> wrote:
>
> A diode across a coil is usually a suppressor for
> the spike that occurs
> from the collapsing magnetic field when a coil is
> deenergized.
>
> Todd
>
> Mick Abraham wrote:
>
> >Hi,
> >
> >My client's RV needs a "low voltage disconnect" for
> the 12 volt
> >circuits...and we also want a remote control for
> "manual off" so a
> >normal C-40 type control won't work.
> >
> >I may build a control with a mercury displacement
> contactor for the
> >switching, and the Morningstar Relay Driver for the
> deciding.
> >
> >As installed in the Ananda Powercenter, these
> mercury relays have some
> >cryptic components on the coil terminals and I
> wonder if I need those in
> >my application? It looks like there's a diode in
> series with the coil
> >control voltage, and a second diode wired reverse
> bias across the coil.
> >
> >What are those widgets for? Do I need them?
> >
> >Mick Abraham, Proprietor
> >www.abrahamsolar.com
> >
> >
> >
>
>
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