A solar-battery array comprising a plurality of solar batteries, which is characterized
by satisfying the relationship of V20 and V1+V20,
where V1 is the voltage to ground of the positive-pole terminal at the
time of maximum output of the solar-battery array, and V2 is the voltage
to ground of the negative-pole terminal at the time of maximum output of the same
and a photovoltaic power generation system having such an array are disclosed,
whereby the effects of an electric shock on the human body can lessen even when
you touch any electric circuit of the solar-battery arrays.
