It'd be a worry trying to put 240 into a grid that was at 235... Something would melt. My money would be on it not being the grid that melted :)
Mike On Thu, Jul 25, 2013 at 12:35 PM, Tony Wright <[email protected]> wrote: > Just spoke with my brother about it. He says unfortunately with grid > connected solar you are still affected by the voltage of the grid. In his > case, he can disconnect from the grid and in that case it outputs at 48v, > then an inverter(?) boosts it up to close to 240v (48 x 5). He has measured > and it is usually sits around 235 volts when he does this. But when he is > connected to the grid, he gets wild fluctuations which he says he's proven > are caused entirely by the grid and not his solar set up. His voltages have > been between 245 and 267 at times (in Brunswick.) > > He says you might be able to make a complaint to the grid authority > because your voltages are outside of Australian Standards, which he says is > +/-10% around 240 volts (so a minimum of 216 volts) > > > On Thu, Jul 25, 2013 at 12:15 PM, Paul Keen <[email protected]> wrote: > >> I am a complete novice in this area but does rooftop solar have any >> impact on supply problems like this.**** >> >> ** ** >> >> Paul**** >> >> ** ** >> >> ** ** >> >> *From:* [email protected] [mailto: >> [email protected]] *On Behalf Of *GregAtGregLowDotCom >> *Sent:* Thursday, 25 July 2013 12:04 PM >> *To:* 'ozDotNet' >> *Subject:* RE: UPS**** >> >> ** ** >> >> No UPS is going to generate power for you. You’d need a generator for >> that.**** >> >> ** ** >> >> Do United Energy have any sort of service level agreement? Or any >> agreement on what the tolerance should be? In the end, it sounds like you >> need new cabling to your area and only the supply company can do that. Last >> time I looked at this, the guarantees that they provided were very limited. >> It was almost as though if anything came out of your power points, you >> should be giving thanks to them.**** >> >> ** ** >> >> People have been successful in giving the electricity companies a hard >> time about quality of supply but it’s a hard road. I know of one in >> Queensland where they eventually gave in and power conditioned his whole >> house just to shut him up. (Mind you, he’s also been banned from the High >> Court as a serial pest so you can imagine the lengths that he was prepared >> to go to).**** >> >> ** ** >> >> Is there anything else in your street that could claim a strong need for >> better quality supply? For example, anyone on sensitive medical equipment? >> **** >> >> ** ** >> >> A lot of computing equipment used to be rated as 220V +5% -10%. Those >> devices should be fine. But those that are 240V nominal might be a problem. >> I recall that Western Australian areas with 250V nominal used to be a real >> hassle for some equipment.**** >> >> ** ** >> >> In desperation, I’d suggest trying:**** >> >> ** ** >> >> 1. Finding computing equipment that’s designed for 220V rather >> than 240V. (Some power supplies have switches on them, and you might be >> able to order a different power adapter for a notebook)**** >> >> 2. Get a big transformer (eg. 2KVA) wound for something like 215V >> in and 240V out, then use a UPS.**** >> >> ** ** >> >> Regards,**** >> >> ** ** >> >> Greg**** >> >> ** ** >> >> Dr Greg Low**** >> >> ** ** >> >> 1300SQLSQL (1300 775 775) office | +61 419201410 mobile│ +61 3 8676 4913fax >> **** >> >> SQL Down Under | Web: www.sqldownunder.com**** >> >> ** ** >> >> *From:* [email protected] [ >> mailto:[email protected] <[email protected]>] *On >> Behalf Of *Stuart Kinnear >> *Sent:* Thursday, 25 July 2013 11:50 AM >> *To:* ozDotNet >> *Subject:* UPS**** >> >> ** ** >> >> I am suffering major degradation of power supply over these winter >> months. The voltage drops to 204V during peak load periods and sits any >> where between 215 to 230 during the day.**** >> >> ** ** >> >> Contacted United Energy several times - they are playing tricks like not >> turning up when the problems are manifested and measuring the power at >> midnight & saying it's OK. Talk to the technicians & they say that because >> I live at the end of the street & there are several new units >>> tough >> luck charlie. **** >> >> ** ** >> >> What I am thinking is to get a decent UPS that would regulate the supply, >> but I am not sure that they would work over a number of hours. It would >> need to support 6 PCs. Does anyone have any recommendations ? >> **** >> >> ** ** >> >> -- >> >> ----------------------------------------------------------------------------- >> Stuart Kinnear >> Mobile: 040 704 5686. Office: 03 9589 6502 >> >> SK Pro-Active! Pty Ltd >> acn. 81 072 778 262 >> PO Box 6117 Cromer, Vic 3193. Australia >> >> Business software developers. >> SQL Server, Visual Basic, C# , Asp.Net, Microsoft Office. >> >> ----------------------------------------------------------------------------- >> **** >> > > -- Meski http://courteous.ly/aAOZcv "Going to Starbucks for coffee is like going to prison for sex. Sure, you'll get it, but it's going to be rough" - Adam Hills
