[BC] 110 V DC

[Gary Glaenzer]

most 'modern' equipment is set up with 208 and 240 V primary taps

older stuff may be a problem, and require b/b xfmrs

I have run '277V' flourescent ballasts (read: 'failed to check before buying
at a surplus sale') on 240 V.........but they were a bitch to start in cold
weather


----- Original Message ----- 
From: <nakayle at gmail.com>
To: "Broadcasters' Mailing List" <broadcast at radiolists.net>
Sent: Saturday, December 02, 2006 4:56 PM
Subject: Re: [BC] 110 V DC


> The real problem comes when you want to use a very common 240V device
> in a commercial building because many only have 120/208 and 277/480
> systems.  But 208 is generally too low for a 240 device and 277 is too
> high so you usually wind up having to use a autotransformer to boost
> 208 or cut 277.
>
> On 12/2/06, Gary Glaenzer <glaenzer at verizon.net> wrote:
> > yes, I know
> >
> > I was questioning if the voltages that Peter quoted corresponded to our
> > 120-208 and 277-480 systems
> >
> > G
> >
> >
> > ----- Original Message -----
> > From: <nakayle at gmail.com>
> > To: "Broadcasters' Mailing List" <broadcast at radiolists.net>
> > Sent: Saturday, December 02, 2006 4:31 PM
> > Subject: Re: [BC] 110 V DC
> >
> >
> > > A 120V 3-phase wye system will produce 120V phase to neutral and 208V
> > > phase to phase.
> > >  A 480V 3-phase wye system will produce 480V phase to phase and 277V
> > > phase to neutral.
> > >
> > >  -Nat
> > >
> > > On 12/2/06, Gary Glaenzer <glaenzer at verizon.net> wrote:
> > > > the 220/380 and 240/415 being analogous to our 120/208 and 277/480 ?
> > > >
> > > > 380 and 415 being 'primary' 3-phase and the 200 and 240 the
wye-derived
> > > > single phase ?
> > > >
> > > > G
> > > >
> > > >
> > > > ----- Original Message -----
> > > > From: "PeterH5322" <peterh5322 at rattlebrain.com>
> > > > To: "Broadcasters' Mailing List" <broadcast at radiolists.net>
> > > > Sent: Saturday, December 02, 2006 4:12 PM
> > > > Subject: Re: [BC] 110 V DC
> > > >
> > > >
> > > > >
> > > > > >Most of the rest of the world used 230V for all single phase
service
> > > > > >which becomes 400V for 3-phase.
> > > > >
> > > > > Japan is 100 and 200.
> > > > >
> > > > > Various parts of what is now the EU used to be 220/380, 230/400 or
> > > > > 240/415, with 220/380 and 240/415 being predominate, and 230/400
being
> > > > > somewhat of a rarity. My former employer made mainframe data
> > processing
> > > > > equipment for the 380 and 415 markets.
> > > > >
> > > > > EU "harmonized" on 230/400 by law, but not necessarily by reality.
> > > > >
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> _______________________________________________
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