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3.2.4 Regular Operational Frequency Range
The inverter can operate within its frequency range for at least the specified observation
time. The setting of conditions depends on whether the connection is due to a normal opera-
tional start-up or an automatic reconnection after disconnection from grid.
When the frequency level is outside the operational and protection levels, the inverter will
disconnect from the grid. If a disturbance lasts longer than the required protection time, the
inverter can reconnect to the grid once the frequency level goes back to normal levels after
the disturbance.
3.2.5 Reactive Power Regulation
The inverter is capable of operating in reactive power regulation modes for the purpose of
providing support to the grid. The reactive power regulation mode can be set via the iSolar-
Cloud App.
3.2.6 Load Control
The inverter has an integrated multiple-function dry-contact (DO relay), which can be used
for load control via a contactor.
User may set the control mode according to individual demand.
• Timing Mode: Set the starting time and end time. The DO function will be enabled during
the time interval.
• Switch Mode: The DO function can be enabled or disabled.
• Intelligent Mode: Set the starting time, end time, and the optimized power. During the in-
terval, when the export power reaches to the optimized power, the DO function will be en-
abled for at least 20 minutes even if the power goes lower. The switch-on can take some
time.
3.3 Battery Management
Li-ion battery from SUNGROW, LG Chem, BYD and Pylontech are compatible with the PV
ESS，further battery models will be made compatible in the future.
The currently supported battery brands and models are shown in the following table.
Brand Model Firmware Version
SUN-
GROW
SBR096/128/160/192/224/256
≥ SBRBCU-S_22011.01.05
LG
Chem
RESU7H_Type_R
DC-DC converter version ≥ 4.8
Battery management system (BMS)
version ≥ 1.7.0.1
RESU10H_Type_R
BYD
Battery-Box HV 5.1, 6.4, 7.7, 9.0,
10.2, 11.5
≥ V3.013
3 Function Description User Manual
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