Huawei SUN2000 User Manual page 115

SUN2000-(3.8KTL-11.4KTL)-USL0
User Manual
Parameter
Unlock optimizer
Night-time hibernation
TCP heartbeat interval
Delay upgrade
LVRT
Threshold for triggering
LVRT (V)
LVRT undervoltage
protection shield
LVRT reactive power comp
factor
Issue 01 (2018-05-21)
Description
The optimizer needs to be
unlocked before inverter
replacement.
The SUN2000 monitors PV
strings at night. If
Night-time hibernation is
set to Enable, the
monitoring function of the
SUN2000 will hibernate at
night, reducing power
consumption.
Set the TCP heartbeat
interval between the
management system and the
inverter. If it is set to 65535,
there is no heartbeat. If it is
set to 0, the heartbeat
interval is 3 minutes by
default.
This parameter is mainly
used in upgrade scenarios at
night when there is no
power output from the PV
strings or the dawn or dusk
when output is unstable.
When the grid voltage is
abnormally low for a short
time, the SUN2000 cannot
disconnect from the power
grid immediately and has to
work for some time. This is
called low voltage
ride-through (LVRT).
Specifies the threshold for
triggering LVRT.
Enables or disables the
undervoltage protection
shield during LVRT.
During LVRT, the
SUN2000 needs to generate
reactive power to support
the power grid. This
parameter specifies the
reactive power generated by
the SUN2000.
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7 Operations on the Local FusionHome App
Value Range
 Disable

Enable
 Disable
 Enable
[0, 65535]
 Disable
 Enable
 Disable
 Enable
[50%Vn, 92%Vn]
 Disable
 Enable
[0, 3]
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