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Deleted User YDKXO
Guest
Yup now you've got itLOL, along the lines of "fog in Channel, Continent cut off"?
Coffee machine wont work off generator
- Thread starter Chill
- Start date
Chill
Member
It works when I boil the kettle at the same time!
So i guess i need to check the voltage output, if its too high can it be lowered?
Not the end of the world as I usually add boiling hot water from the kettle to a shot of espresso
So i guess i need to check the voltage output, if its too high can it be lowered?
Not the end of the world as I usually add boiling hot water from the kettle to a shot of espresso
Last edited:
ARE
Member
As stated before I suggest this is a frequency, not voltage issue.
When you boil the kettle this drags the engine down and the frequency. Hence the frequency is inside the parameters of the coffee machine once loaded by the kettle.
Anthony
When you boil the kettle this drags the engine down and the frequency. Hence the frequency is inside the parameters of the coffee machine once loaded by the kettle.
Anthony
superheat6k
Well-known member
Or simply a combination of both. The internal resistance of the generator stator will tend to reduce the voltage as the load increases, the load on the shaft will tend to slow the machine reducing the frequency. Droop occurs in every generator, even gigantic power station units.
This is why the National Grid over speed the system a few fractions of a hertz during light load periods, then lose the gained extra cycles during the peak periods. A frequency clock can be seen to gain then lose a few minutes compared with a quartz clock throughout the day.
Beyondhelp
Member
Grid freq http://www.dynamicdemand.co.uk/grid.htm
Superheat6k, I calculated that worst case scenario of 1% (Legal frequency drift limit), so +/- .5hz drift would loose/gain in theory a maximum of 30 seconds in an hour. Quite a surprising amount by a drift so small.. I at first thought your clock statement was exaggerated somewhat, but I now agree.
Anyhow, back to this coffee machine, only way to know for sure is to get an oscilloscope &/or frequency counter on this genset and see watts (get it?) going on. Then re-cal the genset and see if it works. If it doesn't, then its going to be down to noise or some such. If you were local I'd offer to look just out of pure interest.
Superheat6k, I calculated that worst case scenario of 1% (Legal frequency drift limit), so +/- .5hz drift would loose/gain in theory a maximum of 30 seconds in an hour. Quite a surprising amount by a drift so small.. I at first thought your clock statement was exaggerated somewhat, but I now agree.
Anyhow, back to this coffee machine, only way to know for sure is to get an oscilloscope &/or frequency counter on this genset and see watts (get it?) going on. Then re-cal the genset and see if it works. If it doesn't, then its going to be down to noise or some such. If you were local I'd offer to look just out of pure interest.
superheat6k
Well-known member
Many years ago I visited Fawley power station and they had two clocks one showing real time and the other grid time, and the law I understands require they maintain the average of 50hz over a 24 hour period, and they need this flexibility to govern the grid highs and lows.