There is not enough information given to answer the question. It would depend on the battery or other source that you get the 12.7 volts from.
In the US a general purpose receptacle outlet would be 120 volts; England 240 volts, France 115 volts, Libya 127 volts, Okinawa 100 volts, Tanzania 230 volts . . .; all depends on where your house is.
127
If you have a voltage of 127 volts to neutral (ground) then your wye connected three phase leg voltages will have to be 127 x 1.73 = 220 volts. This voltage is within the 10% allowance for voltages as should operate the compressor. As the voltage is lower that specified, the amperage rating when a reading is taken will be higher than that of the equipments nameplate.
That depends where you are. In north America the outlets are nominally 110 volts. I have tested many homes and find them actually from 105 to as much as 127 volts
No country in the world uses 138 volts. They use 100, 110, 115, 120, 127, 210, 220, & 240.
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127
127" = 15.83 feet.
127 kg = 19.99 stone
127 ft = 127 x 12 inches = 1524 inches
There are: 127 times 60 = 7620 seconds
3.96875 x 32 = 127