Parameter Description Remarks
Night-time reactive
power compensation
(kVar)
During the reactive power
compensation at night, the reactive
power is scheduled by xed value.
This parameter is displayed
when Night-time reactive
power output and Enable
reactive power parameters at
night are set to Enable.
Overfrequency
derating
If this parameter is set to Enable, the
active power of the inverter will be
derated according to a certain slope
when the grid frequency exceeds the
frequency that triggers overfrequency
derating.
N/A
Trigger frequency of
over frequency
derating (Hz)
The standards of certain countries and
regions require that the output active
power of the SUN2000 be derated
when the grid frequency exceeds a
certain value.
● This parameter is displayed
when Overfrequency
derating is set to Enable.
● When setting this parameter,
ensure that the following
condition is met: Frequency
for exiting overfrequency
derating ≤ Frequency for
triggering overfrequency
derating <
Cuto frequency
of overfrequency derating.
Cuto frequency of
overfrequency
derating (Hz)
Species the frequency threshold for
cutting o overfrequency derating.
Cuto power of
overfrequency
derating (%)
Species the power threshold for
cutting o overfrequency derating.
Quit frequency of
over frequency
derating (Hz)
Species the frequency threshold for
exiting overfrequency derating.
Power recovery
gradient of
overfrequency
derating (%/min)
Species the recovery rate of the
overfrequency derating power.
PF (U) voltage
detection ltering
time (s)
Species the time for ltering the grid
voltage in the PF-U curve.
N/A
Communication
disconnection fail-
safe
In the inverter export limitation
scenario, if this parameter is set to
Enable, the inverter will perform
active power derating by percentage
when the communication between the
inverter and the SmartLogger or Smart
Dongle is disconnected for more than
the time
specied by Communication
disconnection detection time.
N/A
SUN2000-(70KTL, 75KTL)-C1
User Manual 7 Man-Machine Interactions
Issue 09 (2020-10-12) Copyright © Huawei Technologies Co., Ltd. 94