Inverter Settings
IPS (only available for Italian grid code CEI-021)
1
IPS external command signal
Specifies IPS external command signal.
2
IPS local command signal
Specifies IPS local command signal.
System Parameters
1
Insulation impedance threshold
To ensure the safety of the equipment, the equipment cannot operate if the equipment detects that the measured insulation resistance to the ground output by the PV array is lower than the value set for this parameter.
2
PV input start voltage
You can set a lower starting voltage when few PV strings are connected.
3
Ground fault detection
When it is set to 
, a grounding error alarm is generated when the device is not grounded or properly grounded.
4
MPPT Multi-peak Scanning
When it is set to, Can trigger multi-peak scanning.
MPPT Multi-Peak Scanning Interval: Set the multi-peak scanning cycle time, and it will scan once every set interval.
5
Leakage current optimization enabled
When it is set to, It can reduce the machine's leakage current to the ground, but may also increase the device's power loss.
6
Grid Power Loss No-Auto-Start Endble
After a power grid failure, the inverter cannot recover automatically and requires manual confirmation before clearing the fault alarm on the App.
Power
1
Maximum apparent power
You can set this parameter to adjust the maximum apparent power of the device.
2
Maximum Active Power Output
You can set this parameter to adjust the maximum output active power of the device.
3
Maximum Active Power Input
You can set this parameter to adjust the maximum input active power of the device.
4
Max. Continuous Current
Set maximum apparent current.
Fan parameters
External fan silent mode regulation
When it is set to 
, the maximum fan speed is limited to reduce fan noise.
EMS Control
Single-Machine Active Power Dispatch Enable
When it is set to 
, the power is scheduled for a single device, and you can set it to either active power mode or reactive power mode.
Inverters with this parameter set cannot participate in EMS control.
Pack Delayed Activation
Pack Delay Activation Enable
When it is set to
, PACK activation is delayed. During initial startup, the PACK is not activated. After startup is completed, manually activate the PACK via the APP interface as needed.
PV- positive bias
1
PID Compensation Direction
PID compensation direction. Only supports P-type panels or PV positive bias.
PV Positive Bias: When it is set to
, PV positive bias can be set.
2
Pid Repair Enable
When it is set to, PID repair is activated. Works only during nighttime when the grid relay is disconnected.
3
Pid Protection Enabled
When it is set to, PID protection is activated. Only applicable to IT grids, i.e., grids with an isolation transformer on the output.
4
Nighttime PID Protection Enabled
When it is set to, nighttime PID protection is activated. If an abnormality is detected in the PID module during nighttime operation, the system shuts down for protection.
Islanding
1
Active Anti-islanding
When it is set to , active anti-islanding is activated.
2
Passive Islanding Enable
When set to , islanding detection is performed by monitoring changes in voltage, frequency, phase, or harmonics at the equipment output when the grid power is off.
Passive Islanding Phase Angle Protection Value: When the phase jump of the grid voltage exceeds the set protection value, it will trigger the passive islanding protection action.
AFCI
AFCI Enables
When it is set to , the device will conduct the DC arc testing.
Setting P(U) Curve
Step 1 : Tap Device > Inverter > Inverter Settings > PU curve Points inculdes.
Step 2 : Set the parameters based on the actual needs.
1
Reactive power Q/S regulation
Regulates the reactive power output by percentage.
2
Fixed value adjustment of reactive power
Regulates the reactive power output by the fixed value.
3
Power factor adjustment
Specifies the power factor.
4
PF-P/Pn curve Points included
Specifies the power factor of the device regulating the output power based on P/Pn(%) in real time.
5
PF-P/Pn adjustment time
Specifies the time required to regulate 95% of the reactive power output from the device based on the PF-P/Pn curve correspondence.
6
PF-U curve Points included
Specifies the power factor that the device regulates in real time based on the ratio U/Un(%) between the actual voltage and the rated voltage.
7
Q-P curve Points included
Specifies the ratio Q/Pmax between reactive power and maximum active power that the device regulates in real time based on the ratio P/Pmax between active power and maximum active power.
8
Q-P curve adjustment time
Specifies the time required to regulate 95% of the reactive power output from the device based on the Q-P curve correspondence.
9
Q-U curve Points included
Specifies the ratio Q/S between reactive power output and apparent power that the device regulates in real time based on the ratio U/Un(%) between actual grid voltage and rated voltage.
10
Q-U curve trigger power
Specifies the P/Pmax at which the device triggers the Q-U curve function. The Q-U curve scheduling function is enabled when the actual power is greater than the set value.
11
Q-U curve exit power
Specifies the P/Pmax at the device that exists the Q-U curve function. The Q-U curve scheduling function is disabled when the actual power is lower than the set value.
12
Q-U curve power regulation time
Specifies the time required to regulate 95% of the reactive power output from the device based on the Q-U curve correspondence.
Setup V-Watt and Volt-Var Mode
This inverter complies with AS/NZS 4777.2: 2020 for power quality response modes. The inverter satisfies different regions of DNSPs' grid connection rules requirements for volt-watt and volt-var Settings. e.g.: AS4777 series setting as below Figures.
Volt–var response set-point values
Australia C parameter set is intended for application in isolated or remote power systems.
Volt–watt response default set-point values
Inverters may operate at a reactive power level with a range up to 100 % supplying or absorbing.
Australia C parameter set is intended for application in isolated or remote power systems.
Setting procedure：
1. AS4777 grid compliance has been set during production, please select corresponding grid compliance according to state regulation during installation. You can choose a state regulation compliance with your local grid via mySigen App.
2. Select reactive power settings and choose QU mode and enable P-U voltage derating settings to enter DNSPs settings.
With regard to the Power rate limit mode, Sigenergy sets the product WGra to 16.67%Pn by default in the following cases according to the requirements of 3.3.4.2 as 4777.2: 2020.
Soft ramp up after connect.
Reconnect or soft ramp up/down following a response to frequency disturbance.
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