Line voltage north-eastern Australia?
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From: PeterD on 31 Mar 2010 18:56 On Wed, 31 Mar 2010 14:06:27 -0700, Joerg <invalid(a)invalid.invalid> wrote: >Greg Neff 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? >> >> For verification:: >> >> http://www.ewh.ieee.org/r10/nsw/subpages/history/Australian-AC-Line-Voltages.pdf >> >> http://www2.energyaustralia.com.au/internet/pdfs/ENOS%20June%202009_published_.pdf >> >> http://www.ena.asn.au/udocs/ENA%20Customer%20Guide%20to%20Electricity%20Supply.pdf >> >> For validation, I'm not sure I would rely on anecdotal comments from >> NGs. If this is a significant concern, and it were me, I would talk >> to some linemen and/or electricians in the target area to get some >> data. >> > >Actually, one guy on the Australian group corroborated the numbers in >the links. 216V min and 264V max, scary. Queensland is supposedly better >where it's served by Energex but even if you asked a lineman in Brisbane >it might be all nice and dandy there while it's very different up north. >However, I did ask my client to request info via their Australian people. > >BTW, the poster in the AU group measured the current voltage and got a >reading of nearly 258V (!). Well, 240 volts, +/- 10% would be 216 to 264, which does sound reasonable, and certainly not that scary. OK, I'm in NH (USA). Nominal voltage is supposed to be 240 volts. I'm reading 233 to 234 volts, so it is a bit low right now. Evening time, so higher demand I'm sure.
From: Tim Williams on 31 Mar 2010 23:43 "PeterD" <peter2(a)hipson.net> wrote in message news:6gk7r55k7jb9sd3c0h39l15inbvj5mhhml(a)4ax.com... > OK, I'm in NH (USA). Nominal voltage is supposed to be 240 volts. I'm > reading 233 to 234 volts, so it is a bit low right now. Evening time, > so higher demand I'm sure. Ironically, I measure 122.4V in the labs here at school, *and* at home at my Bench. Tim -- Deep Friar: a very philosophical monk. Website: http://webpages.charter.net/dawill/tmoranwms
From: David L. Jones on 1 Apr 2010 00:20 Joerg wrote: > 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? They threw boomerangs at them! The non-returning variety of course. The ones that come back are for the Yankee tourists :-> Dave. -- ================================================ Check out my Electronics Engineering Video Blog & Podcast: http://www.eevblog.com
From: PeterD on 1 Apr 2010 07:55 On Wed, 31 Mar 2010 22:43:04 -0500, "Tim Williams" <tmoranwms(a)charter.net> wrote: >"PeterD" <peter2(a)hipson.net> wrote in message >news:6gk7r55k7jb9sd3c0h39l15inbvj5mhhml(a)4ax.com... >> OK, I'm in NH (USA). Nominal voltage is supposed to be 240 volts. I'm >> reading 233 to 234 volts, so it is a bit low right now. Evening time, >> so higher demand I'm sure. > >Ironically, I measure 122.4V in the labs here at school, *and* at home at my >Bench. > >Tim I suppose I should clarify I was measuring the 240 power input to my big Eaton UPS... (and not the power outlets.) and 122.4 (or 244.8) isn't bad at all. I've found that generally in the US the regulation is rather good.
From: Phil Hobbs on 1 Apr 2010 09:36 On 4/1/2010 12:20 AM, David L. Jones wrote: > Joerg wrote: >> 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? > > They threw boomerangs at them! > The non-returning variety of course. The ones that come back are for the > Yankee tourists :-> > > Dave. > Dave, Dave--don't tell me that stunt of Crocodile Dundee's with the limo antenna wasn't for real! I always thought the unique Aussie outlook was due to being brained repeatedly while learning to catch boomerangs. ;) Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal ElectroOptical Innovations 55 Orchard Rd Briarcliff Manor NY 10510 845-480-2058 hobbs at electrooptical dot net http://electrooptical.net
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