Inverter

1

Grid code

Set this parameter based on the grid code of the country or region where the inverter is used and the inverter application scenario.

2

Isolation

Specifies the inverter working mode based on the grounding status at the DC side and the connection to the power grid.

1

Insulation resistance protection

To ensure device safety, the inverter detects the insulation resistance of the input side to the ground when it starts a self-check. If the detected value is less than the preset value, the inverter does not export power to the power grid.

1

MPPT multi-peak scanning

When the inverter is used in scenarios where PV strings are obviously shaded, enable this function. Then the inverter will perform MPPT scanning at regular intervals to locate the maximum power.

The scan interval is set through MPPT scanning interval.

2

MPPT scanning interval

Specifies the MPPT scan interval.

This parameter is displayed only when MPPT multi-peak scanning is set to Enable.

3

RCD enhancing

RCD refers to the residual current of the inverter to the ground. To ensure device security and personal safety, RCD should comply with the standard. If an AC switch with a residual current detection function is installed outside the inverter, this function should be enabled to reduce the residual current generated during inverter running, thereby preventing the AC switch from misoperations.

N/A

4

Reactive power output at night

In some specific application scenarios, a power grid company requires that the inverter can perform reactive power compensation at night to ensure that the power factor of the local power grid meets requirements.

For the inverters except the 600 V inverter, this parameter is available only when Isolation is set to Input ungrounded (with TF).

5

Strong adaptability

If the value of power grid short circuit capacity/power plant installed capacity is less than 3 and the power grid impedance exceeds the upper threshold, the power grid quality will be affected and the inverter may be unable to run properly. Set Strong adaptability to Enable.

N/A

6

Power quality optimization mode

If Power quality optimization mode is set to Enable, the inverter output current harmonics will be optimized.

N/A

7

PV module type

This parameter is used to set different types of PV modules and the shutdown time of the concentration PV modules. If the concentration PV modules are shaded, the power drops drastically to 0 and the SUN2000 shuts down. The energy yield would be affected since it takes too long for the power to resume and SUN2000 to restart. The parameter does not need to be set for crystalline silicon and filmy PV modules.

• If PV module type is set to Crystalline silicon or Film, the SUN2000 automatically detects the power of PV modules when they are shaded and shuts down if the power is too low.
• When the concentration PV modules are used:

  • If PV module type is set to CPV 1, the inverter can quickly restart in 60 minutes when the input power of PV modules drops drastically due to shading.

  • If PV module type is set to CPV 2, the inverter can quickly restart in 10 minutes when the input power of PV modules drops drastically due to shading.

N/A

8

Crystalline silicon PV compensation mode

This parameter reduces the DC voltage of PV modules to the PE by reducing the impedance of the inverter input side to the PE, thereby effectively reducing PID effect of PV modules.

This parameter is displayed if PV module type is set to Crystalline silicon. Set this parameter to P-type output for P-type PV modules and N-type output for N-type PV modules.

9

Communication interrupt shutdown

The standards of certain countries and regions require that the inverter must shut down after the communication is interrupted for a certain time.

If Communication interrupt shutdown is set to Enable and the inverter communication has been interrupted for a specified time (set by Communication interruption duration), the inverter will automatically shut down.

10

Communication interruption duration

Specifies the duration for determining communication interruption, and is used for automatic shutdown for protection in case of communication interruption.

N/A

11

Communication resumed startup

If this parameter is enabled, the inverter automatically starts after communication recovers. If this parameter is disabled, the inverter needs to be started manually after communication recovers.

For the 600 V inverter, this parameter is displayed when Communication interrupt shutdown is set to Enable.

12

Soft start time

Specifies the duration for the power to gradually increase when the inverter starts.

This parameter is set to 360 by default if the Australian AS4777 grid code is selected, to 300 by default if the Italian CEI0-21 or CEI0-16 grid code is selected, and to 600 by default if the Egyptian EGYPT grid code is selected.

13

AFCI

The North American standard requires the inverter to provide the DC arc detection function.

This parameter is supported by only the products marked -US.

Arc detection adaptation mode and AFCI self-test are displayed only when AFCI is set to Enable.

14

Arc detection adaptation mode

Adjusts the sensitivity of arc detection.

15

AFCI self-test

Send the AFCI self-test command manually.

16

Current error during scanning

When the IV curves of PV strings are being scanned, the current change of PV strings operating properly should be monitored to avoid inaccurate scanning caused by sunlight change. If the current exceeds the specified value, it is determined that the sunlight changes, and the IV curves should be scanned again.

N/A

17

OVGR linked shutdown

If this parameter is set to Enable, the inverter shuts down after receiving the OVGR signal. If this parameter is set to Disable, the inverter does not shut down after receiving the OVGR signal.

This parameter is displayed after the Japanese grid code is selected.

18

Dry contact function

Identifies the dry contact signals from the SmartLogger.

Set this parameter to OVGR for OVGR signals, and set it to NC for other signals. This parameter is displayed after the Japanese grid code is selected.

19

Hibernate at night

The inverter monitors PV strings at night. If Hibernate at night is set to Enable, the monitoring function of the inverter will hibernate at night, reducing power consumption.

N/A

20

PLC communication

For inverter models that support both RS485 and PLC (MBUS) communication, when RS485 communication is used, you are advised to set PLC communication to Disable to reduce power consumption.

• If Tracker controller is set to a model, this parameter cannot be set to Enable.
• If the inverter communicates with the SmartLogger over PLC (MBUS), this parameter cannot be set to Enable on the WebUI.

21

Upgrade delay

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.

After the inverter upgrade starts, if Upgrade delay is set to Enable, the upgrade package is loaded first. After the PV power supply recovers and the activation conditions are met, the inverter automatically activates the upgrade.

22

String monitor

The inverter monitors PV strings in real time. If any PV string is abnormal (such as being shaded or with decreased energy yields), the inverter generates an alarm to remind maintenance personnel of timely maintenance.

If PV strings are easily shaded, you are advised to set String monitor to Disable to prevent false alarms.

23

String detection low power delay

Specifies the delay time for generating abnormal string alarms when the inverter detects that a PV string is working with low power. This parameter is mainly used in the scenario where PV strings are shaded for a long time in the morning and evening, and is used to prevent false alarms.

This parameter is displayed when String monitor is set to Enable.

24

String detection high power delay

Specifies the delay time for generating abnormal string alarms when the inverter detects that a PV string is working with high power.

25

String detection power segment division percentage

Specifies the thresholds for determining whether a PV string is working with high power or low power. This parameter is used to distinguish the working status of PV strings.

26

String detection reference asymmetric coefficient

Specifies the threshold for determining PV string exception. The false alarms caused by fixed shadow shading can be controlled by changing this parameter.

This parameter is displayed when String monitor is set to Enable.

27

String detection starting power percentage

Specifies the threshold for starting PV string exception detection. The false alarms caused by fixed shadow shading can be controlled by changing this parameter.

28

Shutdown at 0% power limit

If this parameter is set to Enable, the inverter shuts down after receiving the 0% power limit command. If this parameter is set to Disable, the inverter does not shut down after receiving the 0% power limit instruction.

N/A

29

Maximum apparent power

Specifies the output upper threshold for the maximum apparent power to adapt to the capacity requirements for standard and customized transformers.

If the maximum active power equals Smax_limit, this parameter is not displayed.

30

Maximum active power

Specifies the output upper threshold for the maximum active power to adapt to various market requirements.

For 1000 V inverters, this parameter is configurable only for the SUN2000-25KTL-US, and the maximum value is 27.5 kW.

31

Tracking system controller

Selects a controller vendor.

N/A

32

Commanded shutdown hold after power recovery

The standards of certain countries and regions require that if the inverter is shut down based on a command and powers on again after power recovers, it should still be in commanded shutdown state.

N/A

33

Grounding abnormal shutdown

If this parameter is set to Enable, the inverter shuts down after receiving the grounding error signal. If this parameter is set to Disable, the inverter does not shut down after receiving the grounding error signal.

N/A

34

String connection mode

Specifies the connection mode of PV strings.

• When the PV strings connect to the inverter separately (fully separate connection), there is no need to set this parameter. The inverter can automatically detect the connection mode of the PV strings.
• When the PV strings connect to one another in parallel outside the inverter and then connect to the inverter independently (fully parallel connection), set this parameter to All PV strings connected.

N/A

35

PID protection at night

• When PID protection at night is set to Enable, the SUN2000 will shut down automatically if it detects abnormality in PID voltage compensation during the reactive power compensation at night.
• When PID protection at night is set to Disable, the SUN2000 will operate in grid-tied mode if it detects abnormality in PID voltage compensation during the reactive power compensation at night.

N/A

36

RS485-2 communication

If this parameter is set to Enable, the RS485-2 port can be used. If the port is not used, it is recommended that this parameter be set to Disable to reduce power consumption.

N/A

37

Built-in PID running mode

Specifies the operation mode of the SUN2000 built-in PID.

N/A

38

PID nighttime off-grid repair

Specifies whether to enable the PID nighttime off-grid repair.

N/A

39

PID daytime off-grid repair

Specifies whether to enable the PID daytime off-grid repair.

N/A

1

Grid code

Set this parameter based on the grid code of the country or region where the inverter is used and the inverter application scenario.

N/A

2

Output mode

Specifies whether the inverter has an output neutral wire based on the inverter application scenario.

This parameter is supported by the SUN2000-33KTL, SUN2000-33KTL-A, SUN2000-36KTL, SUN2000-50KTL-M0, SUN2000-60KTL-M0, and the inverters named with -US.

3

PQ mode

If PQ mode 1 is selected, the maximum AC output power equals the maximum apparent power. If PQ mode 2 is selected, the maximum AC output power equals the rated output power.

This parameter is supported by the SUN2000-36KTL, SUN2000-42KTL, SUN2000-50KTL-M0, and SUN2000-60KTL-M0.

4

Auto start upon grid recovery

Specifies whether to allow the inverter to automatically start after the power grid recovers.

N/A

5

Grid connection duration after power grid recovery

Specifies the waiting time for inverter restart after the power grid recovers.

This parameter can be set to [150, 900] for the 1000 V and 1100 V inverters under the Japanese grid codes.

6

Grid reconnection voltage upper limit

The standards of certain countries and regions require that the inverter must not connect to the power grid when the power grid voltage is higher than the upper limit.

In 1000 V inverters, the SUN2000-(8KTL-28KTL) does not support this parameter.

Vn represents the rated voltage.

7

Grid reconnection voltage lower limit

The standards of certain countries and regions require that the inverter must not connect to the power grid when the power grid voltage is lower than the lower limit.

8

Grid reconnection frequency upper limit

The standards of certain countries and regions require that the inverter must not connect to the power grid when the power grid frequency is higher than the upper limit.

In 1000 V inverters, the SUN2000-(8KTL-28KTL) does not support this parameter.

Fn represents the rated frequency.

9

Grid reconnection frequency lower limit

The standards of certain countries and regions require that the inverter must not connect to the power grid when the power grid frequency is lower than the lower limit.

10

Reactive power compensation (cosφ-P) trigger voltage

Specifies the voltage threshold for triggering reactive power compensation based on the cosφ-P curve.

N/A

11

Reactive power compensation (cosφ-P) exit voltage

Specifies the voltage threshold for exiting reactive power compensation based on the cosφ-P curve.

N/A

1

Unbalance voltage protection

Specifies the inverter protection threshold in the case of unbalanced power grid voltage.

N/A

2

Phase protection point

The Japanese standard requires that during passive islanding detection, protection should be triggered if an abrupt voltage phase change is detected.

Configurable abruptly changed phase angles are 3°, 6°, 9°, 12°, and 15°, which are displayed after the Japanese grid code is selected.

3

Phase angle offset protection

The standards of certain countries and regions require that the inverter needs to be protected when the three-phase angle offset of the power grid exceeds a certain value.

N/A

4

10 minute OV protection

Specifies the 10-minute overvoltage protection threshold.

Vn represents the rated voltage.

5

10 minute OV protection time

Specifies the 10-minute overvoltage protection duration.

6

Level-1 OV protection

Specifies the level-1 overvoltage protection threshold.

Vn represents the rated voltage.

7

Level-1 OV protection time

Specifies the level-1 overvoltage protection duration.

8

Level-2 OV protection

Specifies the level-2 overvoltage protection threshold.

Vn represents the rated voltage.

9

Level-2 OV protection time

Specifies the level-2 overvoltage protection duration.

10

Level-1 UV protection

Specifies the level-1 undervoltage protection threshold.

Vn represents the rated voltage.

11

Level-1 UV protection time

Specifies the level-1 undervoltage protection duration.

12

Level-2 UV protection

Specifies the level-2 undervoltage protection threshold.

Vn represents the rated voltage.

13

Level-2 UV protection time

Specifies the level-2 undervoltage protection duration.

14

Level-1 OF protection

Specifies the level-1 overfrequency protection threshold.

Fn represents the rated frequency.

15

Level-1 OF protection time

Specifies the level-1 overfrequency protection duration.

16

Level-2 OF protection

Specifies the level-2 overfrequency protection threshold.

Fn represents the rated frequency.

17

Level-2 OF protection time

Specifies the level-2 overfrequency protection duration.

18

Level-1 UF protection

Specifies the level-1 underfrequency protection threshold.

Fn represents the rated frequency.

19

Level-1 UF protection time

Specifies the level-1 underfrequency protection duration.

20

Level-2 UF protection

Specifies the level-2 underfrequency protection threshold.

Fn represents the rated frequency.

21

Level-2 UF protection time

Specifies the level-2 underfrequency protection duration.

22

Level-3 OV protection

Specifies the level-3 overvoltage protection threshold.

• In 1000 V inverters, only the inverters marked "-US" support this parameter.
• Vn represents the rated voltage.

23

Level-3 OV protection time

Specifies the level-3 overvoltage protection duration.

24

Level-4 OV protection

Specifies the level-4 overvoltage protection threshold.

• In 1000 V inverters, only the inverters marked "-US" support this parameter.
• Vn represents the rated voltage.

25

Level-4 OV protection time

Specifies the level-4 overvoltage protection duration.

26

Level-3 UV protection

Specifies the level-3 undervoltage protection threshold.

• In 1000 V inverters, only the inverters marked "-US" support this parameter.
• Vn represents the rated voltage.

27

Level-3 UV protection time

Specifies the level-3 undervoltage protection duration.

28

Level-4 UV protection

Specifies the level-4 undervoltage protection threshold.

• In 1000 V inverters, only the inverters marked "-US" support this parameter.
• Vn represents the rated voltage.

29

Level-4 UV protection time

Specifies the level-4 undervoltage protection duration.

30

Level-5 OV protection

Specifies the level-5 overvoltage protection threshold.

Vn represents the rated voltage.

31

Level-5 OV protection time

Specifies the level-5 overvoltage protection duration.

32

Level-6 OV protection

Specifies the level-6 overvoltage protection threshold.

Vn represents the rated voltage.

33

Level-5 OV protection time

Specifies the level-6 overvoltage protection duration.

34

Level-5 UV protection

Specifies the level-5 undervoltage protection threshold.

Vn represents the rated voltage.

35

Level-5 UV protection time

Specifies the level-5 undervoltage protection duration.

36

Level-6 UV protection

Specifies the level-6 undervoltage protection threshold.

Vn represents the rated voltage.

37

Level-6 UV protection time

Specifies the level-6 undervoltage protection duration.

38

Level-3 OF protection

Specifies the level-3 overfrequency protection threshold.

Fn represents the rated frequency.

39

Level-3 OF protection time

Specifies the level-3 overfrequency protection duration.

40

Level-4 OF protection

Specifies the level-4 overfrequency protection threshold.

Fn represents the rated frequency.

41

Level-4 OF protection time

Specifies the level-4 overfrequency protection duration.

42

Level-5 OF protection

Specifies the level-5 overfrequency protection threshold.

Fn represents the rated frequency.

43

Level-5 OF protection time

Specifies the level-5 overfrequency protection duration.

44

Level-6 OF protection

Specifies the level-6 overfrequency protection threshold.

Fn represents the rated frequency.

45

Level-6 OF protection time

Specifies the level-6 overfrequency protection duration.

46

Level-3 UF protection

Specifies the level-3 underfrequency protection threshold.

Fn represents the rated frequency.

47

Level-3 UF protection time

Specifies the level-3 underfrequency protection duration.

48

Level-4 UF protection

Specifies the level-4 underfrequency protection threshold.

Fn represents the rated frequency.

49

Level-4 UF protection time

Specifies the level-4 underfrequency protection duration.

50

Level-5 UF protection

Specifies the level-5 underfrequency protection threshold.

Fn represents the rated frequency.

51

Level-5 UF protection time

Specifies the level-5 underfrequency protection duration.

52

Level-6 UF protection

Specifies the level-6 underfrequency protection threshold.

Fn represents the rated frequency.

53

Level-6 UF protection time

Specifies the level-6 underfrequency protection duration.

54

Overfrequency protection threshold

Specifies the grid overfrequency protection threshold.

N/A

55

Overfrequency protection duration

Specifies the grid overfrequency protection duration.

N/A

56

Underfrequency protection threshold

Specifies the grid underfrequency protection threshold.

N/A

57

Underfrequency protection duration

Specifies the grid underfrequency protection duration.

N/A

58

AC overvoltage protection threshold

Specifies the grid overvoltage protection threshold.

N/A

59

AC overvoltage protection duration

Specifies the grid overvoltage protection duration.

N/A

60

AC undervoltage protection threshold

Specifies the grid undervoltage protection threshold.

N/A

61

AC undervolt

Specifies the grid undervoltage protection duration.

N/A

62

AC overvoltage protection enable

Specifies the level-1 overvoltage protection.

N/A

63

FRT

When the power grid voltage is abnormally low for a short time, the inverter cannot disconnect from the power grid immediately and has to work for some time. This is called LVRT.

N/A

64

Active islanding protection enable

Specifies whether to enable the active islanding protection function.

N/A

65

Passive islanding protection enable

Specifies whether to enable the passive islanding protection function.

N/A

66

Voltage phase jump detection value for passive islanding

The Japanese standard requires that during passive islanding detection, protection should be triggered if an abrupt voltage phase change is detected.

N/A

67

Frequency feedback module

Refers to a control module that calculates the reactive power based on the offset deviation of grid frequency and promotes frequency offset when islanding occurs.

N/A

68

Step injection module

Refers to a control module that injects step reactive power to promote frequency offset when the offset deviation of grid voltage and frequency is very small. When islanding occurs, the inverter and load reaches balance.

N/A

69

Frequency feedback module K1 value

Specifies level-1 gain of the frequency feedback module.

N/A

70

Frequency feedback module K2 value

Specifies level-2 gain of the frequency feedback module.

N/A

71

Restart mode after grid failure

Specifies how the inverter restarts after a grid fault is rectified.

N/A

72

Restart duration after grid failure

Specifies the delay before restart after a grid fault is rectified.

N/A

73

System soft start time

Specifies the duration for the power to gradually increase when the inverter starts.

N/A

74

Voltage rise suppression

The Japanese standard requires that the inverter should control the active power and reactive power when the output voltage exceeds a certain value to ensure the grid voltage stability.

N/A

75

Voltage rise suppression reactive adjustment point

The Japanese standard requires that the inverter should adjust the reactive power to prevent the grid voltage from rising when the output voltage exceeds a certain value.

N/A

76

Voltage rise suppression active derating point

The Japanese standard requires that the inverter should derate the active power to prevent the grid voltage from rising when the output voltage exceeds a certain value.

1

LVRT

When the power grid voltage is abnormally low for a short time, the inverter cannot disconnect from the power grid immediately and has to work for some time. This is called LVRT.

This parameter is set to Enable by default if the German BDEW-MV grid code is selected.

2

LVRT threshold

Specifies the threshold for triggering LVRT.

This parameter is displayed when LVRT is set to Enable.

In 1000 V inverters, the SUN2000-(8KTL-28KTL) does not support this parameter.

Vn represents the rated voltage.

3

LVRT undervoltage protection shield

Specifies whether to shield the undervoltage protection function during LVRT.

This parameter is displayed when LVRT is set to Enable.

4

LVRT reactive power compensation power factor

During LVRT, the inverter needs to generate reactive power to support the power grid. This parameter is used to set the reactive power generated by the inverter.

This parameter is displayed when LVRT is set to Enable.

This parameter is set to 2.5 by default if the South African grid code is selected.

For example, if you set LVRT reactive power compensation power factor to 2, the reactive power generated by the inverter is 20% of the rated power when the AC voltage drops by 10% during LVRT.

5

HVRT

When the power grid voltage is abnormally high for a short time, the inverter cannot disconnect from the power grid immediately and has to work for some time. This is called HVRT.

N/A

6

HVRT triggering threshold

Specifies the threshold for triggering the HVRT. The threshold settings should meet the local grid standard.

This parameter is displayed when HVRT is set to Enable.

7

Active islanding

Specifies whether to enable the active islanding protection function.

N/A

8

Passive islanding

Specifies whether to enable the passive islanding protection function.

This parameter is displayed after the Japanese grid code is selected.

9

Voltage rise suppression

The standards of certain countries and regions require that the active power of the inverter be derated according to a certain gradient when the output voltage exceeds a certain value.

This parameter is set to Enable by default if the Italian grid code CEI0-16 is selected.

10

Voltage rise suppression reactive adjustment point

The standards of certain countries and regions require that the inverter must generate a certain amount of reactive power when the output voltage exceeds a certain value.

• This parameter is displayed when Voltage rise suppression is set to Enable.
• The value of Voltage rise suppression active derating point must be greater than that of Voltage rise suppression reactive adjustment point.

11

Voltage rise suppression active derating point

The standards of certain countries and regions require that the active power of the inverter be derated according to a certain gradient when the output voltage exceeds a certain value.

12

Frequency change rate protection

The inverter triggers protection when the power grid frequency changes too fast.

N/A

13

Frequency change rate protection point

Specifies the frequency change rate protection threshold.

This parameter is displayed if Frequency change rate protection is set to Enable.

14

Frequency change rate protection time

Specifies the frequency change rate protection duration.

15

Soft start time after grid failure

Specifies the time for the power to gradually increase when the inverter restarts after the power grid recovers.

This parameter is set to 360 by default if the Australian AS4777 grid code is selected, and to 300 by default if the Brazilian ABNT NBR 16149 or South African SA_RPPs grid code is selected.

16

Zero current due to power grid fault

Specifies the working mode of the solar inverter during LVRT or HVRT. If this parameter is set to Enable, the output current of the solar inverter will be less than 10% of the rated current during LVRT or HVRT.

N/A

1

Active power change gradient

Adjusts the change speed of the inverter active power.

N/A

2

Fixed active power derated

Adjusts the active power output of the inverter in fixed values.

Pmax represents the maximum active power.

In the 1000 V inverter, the upper threshold for the SUN2000-25KTL-US is 27.5 kW, and the upper threshold for other models of inverters is Pmax.

3

Active power percentage derating

Adjusts the active power output of the inverter in percentages.

If this parameter is set to 100, the inverter delivers the maximum output power.

4

Reactive power change gradient

Adjusts the change speed of the inverter reactive power.

N/A

5

Power factor

Adjusts the power factor of the inverter.

N/A

7

Overfrequency derating

If this parameter is enabled, the active power of the inverter will be derated according to a certain slope when the grid frequency exceeds the value that triggers overfrequency derating.

N/A

8

Trigger frequency of over frequency derating

The standards of certain countries and regions require that the output active power of the inverter should be derated when the power grid frequency exceeds a certain value.

9

Quit frequency of over frequency derating

Specifies the frequency threshold for exiting overfrequency derating.

10

Cutoff frequency of overfrequency derating

Specifies the frequency threshold for cutting off overfrequency derating.

11

Cutoff power of overfrequency derating

Specifies the power threshold for cutting off overfrequency derating.

12

Power recovery gradient of overfrequency derating

Specifies the power recovery gradient for overfrequency derating.

This parameter is set to 16 by default if the Australian AS4777 grid code is selected, and to 15 by default if the Italian CEI0-21 or CEI0-16 grid code is selected.

13

Remote power schedule

If this parameter is set to Enable, the inverter responds to the scheduling instruction from the remote port. If this parameter is set to Disable, the inverter does not respond to the scheduling instruction from the remote port.

N/A

14

Schedule instruction valid duration

Adjusts the duration within which the scheduling instruction is valid.

If this parameter is set to 0, the instruction is valid permanently.

15

Maximum apparent power

Specifies the output upper threshold for the maximum apparent power to adapt to the capacity requirements for standard and customized inverters.

If the maximum active power equals Smax_limit, this parameter is not displayed.

16

Maximum active power

Specifies the output upper threshold for the maximum active power to adapt to various market requirements.

N/A

17

Shutdown at 0% power limit

If this parameter is set to Enable, the inverter shuts down after receiving the 0% power limit instruction. If this parameter is set to Disable, the inverter does not shut down after receiving the 0% power limit instruction.

N/A

18

Reactive power compensation (Q/S)

Adjusts the inverter output reactive power.

N/A

19

Reactive power compensation (PF)

Adjusts the power factor of the inverter.

N/A

20

Reactive power output at night

In some specific application scenarios, a power grid company requires that the inverter can perform reactive power compensation at night to ensure that the power factor of the local power grid meets requirements.

For the inverters except the 600 V inverter, this parameter is available only when Isolation is set to Input ungrounded (with TF).

21

Enable reactive power parameters at night

• When this parameter is set to Enable, the system compensates the reactive power at night based on the value of Reactive power compensation at night.
• When this parameter is set to Disable, the system compensates the reactive power at night based on the remote scheduling command.

N/A

22

Reactive power compensation at night

Sets the reactive power to be compensated at night.

When there is no input or remote scheduling command on the PV side, this command is responded.

N/A