For example, apparently the grid on one side of Japan uses 50 Hz and the other side uses 60 Hz, and this means they can’t interconnect, but… why? Why isn’t it the case that current is current is current is current? I’ve heard some super vague explanation about how deviations in the line frequency can damage electrical equipment, but *how* does it do that?
In: Engineering
Japan uses 100 volts ac. Appliances and devices are designed around using 100 volts. Because of the slight frequency difference the Two power grids can not be connected together, if they were the whole power grid would oscilate between 200 and 0 volts.
As one frequency is Higher than the other the Phase Angle between the powerline Vortages shifts. The Voltage would be chaos, Anywhere from 200 to 0 volts. Sudden Voltage Spikes and drops would kill your devices.
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