71
Fault 201
Grid power
undervoltage
1. Under the
condition of
sufficient
array
input
power,
the
power
grid
undervoltage
fails and the
inverter
operates
normally;
2.
In
the
case of weak
array
input
power,
the
grid is under
voltage, the
inverter
cannot work
or the output
frequency is
low;
3.
The
inverter
cannot
operate
without
photovoltaic
input.
1. The
grid
power switch
is not closed.;
2. The grid
input
is
unstable and
lower than the
minimum grid
operating
voltage of the
machine.
1. Please check
whether the
AC
input
switch
is
closed.
2. Please check
whether the local
grid
voltage
is
normal.
