Inside a "Home Electric Power KWH Meter" - US

[fuzzytomcat]

Hi everyone,
In a earlier posting in a different thread http://www.overunity.com/index.php?topic=6487.msg150967#msg150967 we were discussing the workings of a US home electric power KWH meter. I had several that were "customer owned" for private sub metering of a electrical service, a common practice. So I took one of the old 5 dial types ( 4 dial same thing just one more dial for larger KWH readings ) the metering device used for the past 50 years or longer apart, broke the seal removed some cotter pins and drilled out a couple of rivets and this is whats inside .....

[helmut]

Hi fuzz
You dismantel a meter.
Where is the circuit (sketch)?       What to learn out of it ?

Please read here the last postings too.

http://www.overunity.com/index.php?topic=6487.msg151005#msg151005

helmut

[fuzzytomcat]

Hi fuzz
You dismantel a meter.
Where is the circuit (sketch)?       What to learn out of it ?

Please read here the last postings too.

http://www.overunity.com/index.php?topic=6487.msg151005#msg151005

helmut

Hi helmut,

Yep, I tore one of my meters apart, there about $60.00 US and there were three of them so one went to science. As far as a schematic I'm still trying to figure the inside metal cores out from the 240 volt coil core with the gray wires ( the cut coil wire is to the jumper on the meter back to turn off the meter ) and the amp ring core with the opposing wire bus configuration running through it. There are also four more rivets to remove but I want to make sure the mechanical gearing won't fall apart when I remove them, they can be seen in the last photo, two for the coil and two for the amp ring. As soon as I get into it further I will post a schematic, one thing I do know for sure is if you reverse the line and load or turn the KWH meter upside down in a meter base the KWH meter will run backwards and load balance importance.

The utility company's do lift voltages up from 220-240 nominal to at the highest 250 mostly it's about average 248 RMS volts but it lowers the amperage down.

Fuzzy 

[helmut]

Hi helmut,
........................................
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The utility company's do lift voltages up from 220-240 nominal to at the highest 250 mostly it's about average 248 RMS volts but it lowers the amperage down.

Fuzzy 

Hi Fuzzy
I confirm to you as far as possible.
But the last statement is false (in case of no misunderstanding)

As example we take a ordanary bulb in focus.
The resistor (filament) in a working condition does not change its value.
100W = P=U*I   I=P/U 100/110 =  0,909A  R=U/I = 121,01Ohm          US Voltage
100W = 100/240 = 0,416A   240/0,416 = 576,92 Ohm                       EU  Voltage

If you put a 100 W  Eu Bulb on a  US Grid  I = U/R than the Bulb will take 1,983A  and the filament will melt in a second.
What i want to tell you is, that on a ordenary resistor, there is no circuit, that corrects ( adjust) the resistor. As heaters , Bulbs and transformers.

helmut

[Lakes]

http://en.wikipedia.org/wiki/Electricity_meter#Electromechanical_meters