Huawei SUN2000L User Manual page 105

SUN2000L-(2KTL-5KTL)
User Manual
Parameter
OFF due to abnormal
grounding
Night-time hibernation
Delay upgrade
LVRT
Issue 02 (2017-12-12)
Description
This function is used to
detect whether the
SUN2000L is properly
grounded before starting the
SUN2000L, or to detect
whether the ground cable is
disconnected when the
SUN2000L is working. This
parameter is set to Enable
by default. For certain types
of power grids, if an
isolation transformer
connects to the output side
of the SUN2000L, you need
to set OFF due to
abnormal grounding to
Disable after checking that
the SUN2000L is properly
grounded. Then the
SUN2000L can start
normally.
If you are not sure whether
the SUN2000L connects to
such a power grid, confirm
it with your dealer or
Huawei technical support.
The SUN2000L monitors
PV strings at night. If
Night-time hibernation is
set to Enable, the
monitoring function of the
SUN2000L will hibernate at
night, reducing power
consumption.
This parameter is mainly
used in the upgrade
scenarios where the PV
power supply is
disconnected at night due to
no sunlight or unstable at
dawn or dusk due to poor
sunlight.
When the grid voltage is
abnormally low for a short
time, the SUN2000L cannot
disconnect from the power
grid immediately and has to
work for some time. This is
called low voltage
ride-through (LVRT).
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7 Operations on the Local FusionHome App
Value Range
 Disable

Enable
 Disable
 Enable
 Disable
 Enable
 Disable
 Enable
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