Line voltage north-eastern Australia?
in [Design]
|
From: Joerg on 1 Apr 2010 12:01 PeterD wrote: > 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. Out here only after some serious complaining. Light bulbs burning out, bursting, and so on. Measured 127V, with a spike up from there at night around 10:00pm. Called utility. "It's all normal" ... "But I measured it with a digital storage oscilloscope and I can send you the plots" ... <some swallowing> ... "Ok, we'll be out there latest by 8:00am tomorrow". Now it's 121.5V. -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
From: Jim Thompson on 1 Apr 2010 12:08 On Thu, 01 Apr 2010 09:01:56 -0700, Joerg <invalid(a)invalid.invalid> wrote: >PeterD wrote: >> 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. > > >Out here only after some serious complaining. Light bulbs burning out, >bursting, and so on. Measured 127V, with a spike up from there at night >around 10:00pm. Called utility. "It's all normal" ... "But I measured it >with a digital storage oscilloscope and I can send you the plots" ... ><some swallowing> ... "Ok, we'll be out there latest by 8:00am tomorrow". > >Now it's 121.5V. I buy 130V-rated bulbs. With all the A/C load surges here in AZ, it's a necessity. ...Jim Thompson -- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | The only thing bipartisan in this country is hypocrisy
From: Paul Hovnanian P.E. on 1 Apr 2010 13:23 Joerg wrote: > PeterD wrote: >> 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. > > > Out here only after some serious complaining. Light bulbs burning out, > bursting, and so on. Measured 127V, with a spike up from there at night > around 10:00pm. Called utility. "It's all normal" ... "But I measured it > with a digital storage oscilloscope and I can send you the plots" ... > <some swallowing> ... "Ok, we'll be out there latest by 8:00am tomorrow". > > Now it's 121.5V. > Same thing happened to me. But but it was going into the 130s. And down to 100V on the other leg. At the service entrance. So I called them and told them to come out and fix their neutral. "Blah, blah. Call your own electrician, blah, blah." So I told them that I have a plot of the voltage, I used to be a distribution engineer....for their company. And I was familiar with the telephone service rep's standard response sheet. They fixed* it that night. *With an underground service, they hook up a 'balancing' autotransformer to the meter base until they can get the backhoe out in a day or two. -- Paul Hovnanian paul(a)hovnanian.com ---------------------------------------------------------------------- Have gnu, will travel.
From: Jim Thompson on 1 Apr 2010 13:35 On Thu, 01 Apr 2010 10:23:16 -0700, "Paul Hovnanian P.E." <paul(a)hovnanian.com> wrote: >Joerg wrote: > >> PeterD wrote: >>> 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. >> >> >> Out here only after some serious complaining. Light bulbs burning out, >> bursting, and so on. Measured 127V, with a spike up from there at night >> around 10:00pm. Called utility. "It's all normal" ... "But I measured it >> with a digital storage oscilloscope and I can send you the plots" ... >> <some swallowing> ... "Ok, we'll be out there latest by 8:00am tomorrow". >> >> Now it's 121.5V. >> > >Same thing happened to me. But but it was going into the 130s. And down to >100V on the other leg. At the service entrance. So I called them and told >them to come out and fix their neutral. > >"Blah, blah. Call your own electrician, blah, blah." > >So I told them that I have a plot of the voltage, I used to be a >distribution engineer....for their company. And I was familiar with the >telephone service rep's standard response sheet. They fixed* it that night. > >*With an underground service, they hook up a 'balancing' autotransformer to >the meter base until they can get the backhoe out in a day or two. I had that TWICE happen at the old house (over a 25 year period). First event, furnace blower (120V) would come on, lights in the house would _brighten_ :-( Called APS, got the typical dumb broad response. Read her the riot act, they came out and attached a temporary neutral (above ground) until they could dig up the old one. Second event, oldest daughter, house-sitting while we were in Australia, reports she was getting a shock from the shower head :-( I measured 45VAC between shower head and drain... grounded only via earth. When I later rebuilt that shower I put a big strap between shower plumbing and drain fixture. ...Jim Thompson -- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | The only thing bipartisan in this country is hypocrisy
First
|
Prev
|
Pages: 1 2 3 4 5 Prev: PLL Loop filter Next: Turn your Rigol DS1052E Oscilloscope into a 100MHz DS1102E |