Goodwe ET Series User Manual page 53

User Manual V1.0-2022-08-30
No. Fault
Utility grid
exception. The
duration of
LVRT
10 the utility grid
exception exceeds
the set time of
LVRT.
Utility grid
exception. The
HVRT duration of utility
11
grid exception
exceeds the set
time of HVRT.
12
The input insulation
13
impedance
becomes low when
14
working.
15
current L1
The DC component
of the output
current exceeds
the safety range or
default range.
current L2
1. The PV string is
2. The PV system
Low Insulation
18
Res.
Cause
1. If the problem occurs occasionally, the
utility grid may be abnormal temporarily.
detecting that the utility grid is normal.
2.
permissible range. If not, contact the local
power company. If yes, contact the dealer
1. If the problem occurs occasionally, it
may be caused by a cable exception. The
2. Check whether the impedance between the
PV string and PE is too low if the problem
1. If the problem is caused by an external
fault like a utility grid exception or
problem.
2.
PV station cannot work properly, contact
short-circuited
1. Check whether the resistance of the PV
to PE.
short circuit point.
is in a moist
2. Check whether the PE cable is connected
correctly.
and the cable
3. If the resistance is lower on rainy days,
is not well
please reset the ISO.
insulated to the
ground.
49
Solutions