127 volt standard voltage?

[Michael Moroney]

Dumb question: While reading the instructions for an egg beater, it
mentioned it was "designed for 120 volt or 127 volt use only". The
same was repeated in Spanish. Is this just a mistake or are their
regions of the world where the standard voltage is given as 127 volts?
I know most of the world outside the US/Canada uses 220-240 volt nominal
except parts of Japan use something like 100V, and of course higher
voltages for high powered devices when the low voltage is insufficient.

 

[Brian]

Maybe 127v is the max voltage the appliance allows.


Dumb question: While reading the instructions for an egg beater, it
mentioned it was "designed for 120 volt or 127 volt use only". The
same was repeated in Spanish. Is this just a mistake or are their
regions of the world where the standard voltage is given as 127 volts?
I know most of the world outside the US/Canada uses 220-240 volt nominal
except parts of Japan use something like 100V, and of course higher
voltages for high powered devices when the low voltage is insufficient.

 

[Anthony Guzzi]

Maybe 127v is the max voltage the appliance allows.


Dumb question: While reading the instructions for an egg beater, it
mentioned it was "designed for 120 volt or 127 volt use only". The
same was repeated in Spanish. Is this just a mistake or are their
regions of the world where the standard voltage is given as 127 volts?
I know most of the world outside the US/Canada uses 220-240 volt nominal
except parts of Japan use something like 100V, and of course higher
voltages for high powered devices when the low voltage is insufficient.

According to the World Voltages chart at http://kropla.com/electric2.htm

127v is the standard in Mexico.

 

[Rich256]

Dumb question: While reading the instructions for an egg beater, it
mentioned it was "designed for 120 volt or 127 volt use only". The
same was repeated in Spanish. Is this just a mistake or are their
regions of the world where the standard voltage is given as 127 volts?
I know most of the world outside the US/Canada uses 220-240 volt nominal
except parts of Japan use something like 100V, and of course higher
voltages for high powered devices when the low voltage is insufficient.

Some countries have 127 volt systems: Mexico and Saudi Arabia for example.
They may be either 50 or 60 cycles.

 

[John Gilmer]

Much, maybe all, of Mexico supplies single phase power via 2 phases from
three phase power. In the US that is known in the power industry as
"network power" and is usually 120/208 volts. Now 208 volts sucks. But
to get 240 volts from such a configuration, you'd have to have 138.5 volts
on line to neutral, and that is a bit too much for most things that want
120 volts. In Mexico they have chosen a compromise where the L-N voltage
is just a little high (127 volts) and the L-L voltage is just a little low
(220 volts).

Just curious:

Do "they" make 120/208 (127/220) "2-phase" motors?

IOW: motors wound as 2 phase with 120 degree shift between the two phases.
I suppose "they" could even add a third set of windings to take the 208/220
juice.

Seems to me that these would do a lot better than a capacitor run (& start)
single phase motor running on the 220.

The only negative, of course, is that protection has to be made against
"single phasing" and for some applications (fans and rotary compressors)
phase reversal.

 

[Ben Miller]

Mexico

Ben Miller