Line voltage north-eastern Australia?
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From: Paul Hovnanian P.E. on 30 Mar 2010 20:35 Joerg wrote: > > Jim Thompson wrote: > > On Tue, 30 Mar 2010 16:41:31 -0700, Joerg <invalid(a)invalid.invalid> > > wrote: > > > >> Gents, > >> > >> A product is going to be test marketed in Australia, northern half of > >> the east coast. We know the line voltage there is 240V/50Hz but not > >> which tolerances apply. The upper limit is important to us, and also > >> whether it tends to exceed whatever the standard might say. Can someone > >> elucidate? > > > > I had a customer in Adelaide (more central), but I'll ask. > > > > Thanks. From inland areas I've heard some horror stories. Huge surges, > people having several PC power supplies on the shelf as spares, UPSes > blowing up and all that. You'd have to verify this with engineers from AUS, but one of the features of their rural primary distribution systems is single wire, earth return. That doen't result in very good voltage regulation. -- Paul Hovnanian mailto:Paul(a)Hovnanian.com ------------------------------------------------------------------ I had a dog that would chase anyone riding a bicycle. In the end I had to take his bicycle away.
From: Joerg on 30 Mar 2010 20:35 Jim Thompson wrote: > On Tue, 30 Mar 2010 16:56:36 -0700, Joerg <invalid(a)invalid.invalid> > wrote: > >> Jim Thompson wrote: >>> On Tue, 30 Mar 2010 16:41:31 -0700, Joerg <invalid(a)invalid.invalid> >>> wrote: >>> >>>> Gents, >>>> >>>> A product is going to be test marketed in Australia, northern half of >>>> the east coast. We know the line voltage there is 240V/50Hz but not >>>> which tolerances apply. The upper limit is important to us, and also >>>> whether it tends to exceed whatever the standard might say. Can someone >>>> elucidate? >>> I had a customer in Adelaide (more central), but I'll ask. >>> >> Thanks. From inland areas I've heard some horror stories. Huge surges, >> people having several PC power supplies on the shelf as spares, UPSes >> blowing up and all that. > > From my Aussie buddy... > > "I'd suggest aus.electronics newsgroup. > Done. > I asked a local guy that makes a power meter that sells into > Australia, he wasn't sure of what to expect. Best bet would be to try > talk to someone in that area, I don't know anyone in that area for > power, all of our equipment is battery/solar. > > However it is not uncommon to see 250V surges in Australia in > general. > I've heard of 270V, sparks flying and all, but not near the coast. > Also note that North east Australia has high humidity and lightning > storms like Florida. > Yep, and we've already ruggedized the stuff pretty well when it comes to that. Just the transformer is the problem. 90-260VAC primary switchers aren't that good because most affordable ones peter out above 60C and that doesn't fly in such areas when inside a box. -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
From: Joerg on 30 Mar 2010 20:37 Paul Hovnanian P.E. wrote: > Joerg wrote: >> Jim Thompson wrote: >>> On Tue, 30 Mar 2010 16:41:31 -0700, Joerg <invalid(a)invalid.invalid> >>> wrote: >>> >>>> Gents, >>>> >>>> A product is going to be test marketed in Australia, northern half of >>>> the east coast. We know the line voltage there is 240V/50Hz but not >>>> which tolerances apply. The upper limit is important to us, and also >>>> whether it tends to exceed whatever the standard might say. Can someone >>>> elucidate? >>> I had a customer in Adelaide (more central), but I'll ask. >>> >> Thanks. From inland areas I've heard some horror stories. Huge surges, >> people having several PC power supplies on the shelf as spares, UPSes >> blowing up and all that. > > You'd have to verify this with engineers from AUS, but one of the > features of their rural primary distribution systems is single wire, > earth return. That doen't result in very good voltage regulation. > Ouch. That must be pretty uncomfortable for all those little critters living in the ground. -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
From: Paul Hovnanian P.E. on 30 Mar 2010 21:10 Joerg wrote: > > Paul Hovnanian P.E. wrote: > > Joerg wrote: > >> Jim Thompson wrote: > >>> On Tue, 30 Mar 2010 16:41:31 -0700, Joerg <invalid(a)invalid.invalid> > >>> wrote: > >>> > >>>> Gents, > >>>> > >>>> A product is going to be test marketed in Australia, northern half of > >>>> the east coast. We know the line voltage there is 240V/50Hz but not > >>>> which tolerances apply. The upper limit is important to us, and also > >>>> whether it tends to exceed whatever the standard might say. Can someone > >>>> elucidate? > >>> I had a customer in Adelaide (more central), but I'll ask. > >>> > >> Thanks. From inland areas I've heard some horror stories. Huge surges, > >> people having several PC power supplies on the shelf as spares, UPSes > >> blowing up and all that. > > > > You'd have to verify this with engineers from AUS, but one of the > > features of their rural primary distribution systems is single wire, > > earth return. That doen't result in very good voltage regulation. > > > > Ouch. That must be pretty uncomfortable for all those little critters > living in the ground. Why do you think the kangaroos are always hopping? -- Paul Hovnanian mailto:Paul(a)Hovnanian.com ------------------------------------------------------------------ Quantum Mechanics: The dreams stuff is made of.
From: Joerg on 30 Mar 2010 21:11 Paul Hovnanian P.E. wrote: > Joerg wrote: >> Paul Hovnanian P.E. wrote: >>> Joerg wrote: >>>> Jim Thompson wrote: >>>>> On Tue, 30 Mar 2010 16:41:31 -0700, Joerg <invalid(a)invalid.invalid> >>>>> wrote: >>>>> >>>>>> Gents, >>>>>> >>>>>> A product is going to be test marketed in Australia, northern half of >>>>>> the east coast. We know the line voltage there is 240V/50Hz but not >>>>>> which tolerances apply. The upper limit is important to us, and also >>>>>> whether it tends to exceed whatever the standard might say. Can someone >>>>>> elucidate? >>>>> I had a customer in Adelaide (more central), but I'll ask. >>>>> >>>> Thanks. From inland areas I've heard some horror stories. Huge surges, >>>> people having several PC power supplies on the shelf as spares, UPSes >>>> blowing up and all that. >>> You'd have to verify this with engineers from AUS, but one of the >>> features of their rural primary distribution systems is single wire, >>> earth return. That doen't result in very good voltage regulation. >>> >> Ouch. That must be pretty uncomfortable for all those little critters >> living in the ground. > > Why do you think the kangaroos are always hopping? > Aha! But wait, what did the Aborigines do a few hundred years ago to make them hop back then? -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
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