Manuals+

USER MANUAL

HYBRID SOLAR INVERTER/CHARGER

PRODUCT OVERVIEW

The front panel of the Hybrid Solar Inverter/Charger features the following components:

  • 1. LCD display: Shows operating status and information.
  • 2. Status indicator: Indicates operational status.
  • 3. Charging indicator: Shows charging status.
  • 4. Fault indicator: Lights up when an error occurs.
  • 5. Function buttons: Used for navigation and selection in menus.
  • 6. Grounding: Terminal for grounding the unit.
  • 7. AC input: Terminal for AC power input.
  • 8. AC output: Terminal for AC power output.
  • 9. Battery input: Terminal for connecting the battery.
  • 10. PV input: Terminal for connecting solar panels.
  • 11. WIFI communication port: For optional Wi-Fi monitoring.
  • 12. Power on/off switch: To turn the unit on or off.

INSTALLATION

Unpacking and Inspection

Before installation, please inspect the unit. Ensure that nothing inside the package is damaged. You should have received the following items:

  • The unit x 1
  • User manual x 1

Preparation

Before connecting all wirings, remove the bottom cover by unscrewing two screws.

Mounting the Unit

Consider the following points before selecting where to install:

  • Do not mount the inverter on flammable construction materials.
  • Mount on a solid surface.
  • Install this inverter at eye level to allow the LCD display to be read at all times.
  • The ambient temperature should be between 0°C and 55°C to ensure optimal operation.
  • The recommended installation position is to be adhered to the wall vertically.
  • Ensure sufficient clearance from other objects and surfaces as shown in the diagram to guarantee adequate heat dissipation and space for wire removal.

SUITABLE FOR MOUNTING ON CONCRETE OR OTHER NON-COMBUSTIBLE SURFACE ONLY.

Diagram showing recommended mounting clearances: 20cm on sides, 50cm above and below.

Install the unit by screwing three screws. M4 or M5 screws are recommended.

Battery Connection

CAUTION: For safety operation and regulation compliance, it is requested to install a separate DC over-current protector or disconnect device between the battery and inverter. While not always required in some applications, over-current protection is still recommended. Refer to the table below for typical amperage to determine the required fuse or breaker size.

WARNING! All wiring must be performed by a qualified personnel.

WARNING! It is very important for system safety and efficient operation to use appropriate cable for battery connection. To reduce the risk of injury, please use the proper recommended cable, stripping length (L2), and tinning length (L1) as specified below.

Recommended battery cable stripping length (L2) and tinning length (L1):

Model Maximum Amperage Battery capacity Wire Size Cable mm² L1 (mm) L2 (mm) Torque value
1500W-24 70A 100AH 6AWG 13.3 3 18 2~3 Nm
2500W-24 100A 100AH 4AWG 21.15 3 18 2~3 Nm
Other Models 140A 100AH 2AWG 38 3 18 2~3 Nm

Please follow these steps to implement battery connection:

  1. Remove insulation sleeve 18 mm for positive and negative cables based on the recommended stripping length.
  2. Connect all battery packs as required. Using the recommended battery capacity is advised.
  3. Insert battery cable flatly into the battery connector of the inverter and ensure the bolts are tightened with a torque of 2-3 Nm. Verify that polarity is correctly connected at both the battery and the inverter/charger, and that battery cables are tightly screwed to the battery connector.

AC Input/Output Connection

WARNING: Shock Hazard. Installation must be performed with care due to high battery voltage in series.

CAUTION!! Do not place anything between the flat part of the inverter terminal, as this may cause overheating.

CAUTION!! Do not apply anti-oxidant substance on the terminals before they are connected tightly.

CAUTION!! Before making the final DC connection or closing the DC breaker/disconnector, ensure that the positive (+) must be connected to positive (+) and negative (-) must be connected to negative (-).

CAUTION!! Before connecting to the AC input power source, please install a separate AC breaker between the inverter and the AC input power source. This will ensure the inverter can be securely disconnected during maintenance and fully protected from over current of AC input. The recommended AC breaker specification is 50A.

CAUTION!! There are two terminal blocks with "IN" and "OUT" markings. Please do NOT mis-connect input and output connectors.

WARNING! All wiring must be performed by a qualified personnel.

WARNING! It is very important for system safety and efficient operation to use appropriate cable for AC input connection. To reduce the risk of injury, please use the proper recommended cable size as below.

Suggested cable requirement for AC wires:

Model Gauge Torque Value
1.5KW 12AWG 1.4~ 1.6Nm
2.5KW/3.2W 10AWG 1.4~ 1.6Nm
5.5KW 8 AWG 1.4~ 1.6Nm

Please follow below steps to implement AC input/output connection:

  1. Before making AC input/output connection, be sure to open DC protector or disconnector first.
  2. Remove insulation sleeve 10mm for six conductors. Shorten phase L and neutral conductor N by 3 mm.
  3. Insert AC input wires according to polarities indicated on the terminal block and tighten the terminal screws. Be sure to connect PE protective conductor (Ground (yellow-green)) first.
  4. L → LINE (brown or black)
  5. N → Neutral (blue)

WARNING: Be sure that AC power source is disconnected before attempting to hardwire it to the unit.

  1. Then, insert AC output wires according to polarities indicated on the terminal block and tighten terminal screws. Be sure to connect PE protective conductor (Ground (yellow-green)) first.
  2. L → LINE (brown or black)
  3. N → Neutral (blue)

5. Make sure the wires are securely connected.

CAUTION: Important. Be sure to connect AC wires with correct polarity. If L and N wires are connected reversely, it may cause utility short-circuited when these inverters are worked in parallel operation.

CAUTION: Appliances such as air conditioners require at least 2~3 minutes to restart to allow refrigerant gas inside the circuits to balance. If a power shortage occurs and recovers in a short time, it will cause damage to your connected appliances. To prevent this kind of damage, please check with the air conditioner manufacturer if it is equipped with a time-delay function before installation. Otherwise, this inverter/charger will trigger an overload fault and cut off output to protect your appliance, but sometimes it may still cause internal damage to the air conditioner.

PV Connection

CAUTION: Before connecting to PV modules, please install a separate DC circuit breaker between the inverter and PV modules.

WARNING! All wiring must be performed by a qualified personnel.

WARNING! It is very important for system safety and efficient operation to use appropriate cable for PV module connection. To reduce the risk of injury, please use the proper recommended cable size as below.

Model Typical Amperage Cable Size Torque
1.5KW-3.2KW 15A 12 AWG 1.4~1.6 Nm
5.5KW 18A 12 AWG 1.4~1.6 Nm

PV Module Selection:

When selecting proper PV modules, please be sure to consider the following parameters:

  1. The open circuit Voltage (Voc) of PV modules must not exceed the maximum PV array open circuit voltage of the inverter.
  2. The open circuit Voltage (Voc) of PV modules should be higher than the minimum battery voltage.
Solar Charging Mode
INVERTER MODEL 1.5KW-3.2KW 5.5KW
Max. PV Array Open Circuit Voltage 500VDC 500VDC
PV Array MPPT Voltage Range 30VDC~500VDC 60VDC~500VDC
Max. PV INPUT CURRENT 15A 18A

Take the 450Wp and 550Wp PV modules as an example. After considering the above two parameters, the recommended module configurations are listed in the table below.

Configuration for 450Wp Solar Panels:
SOLAR INPUT Q'ty of panels Total input power Inverter Model
1 pcs in serial1 pcs450 W1.5KW-5.5KW
2 pcs in serial2 pcs900 W1.5KW-5.5KW
3 pcs in serial3 pcs1,350 W1.5KW-5.5KW
4 pcs in serial4 pcs1,800 W1.5KW-5.5KW
5 pcs in serial5 pcs2,250 W2.5KW-5.5KW
6 pcs in serial6 pcs2,700 W2.5KW-5.5KW
7 pcs in serial7 pcs3,150 W2.5KW-5.5KW
8 pcs in serial8 pcs3,600 W3.5KW-5.5KW
9 pcs in serial9 pcs4,050 W3.5KW-5.5KW
10 pcs in serial10 pcs4,500 W5.5KW
11 pcs in serial11 pcs4,950 W5.5KW
12 pcs in serial12 pcs5,400 W5.5KW
6 pieces in serial and 2 sets in parallel12 pcs5,400 W5.5KW
Configuration for 550Wp Solar Panels:
SOLAR INPUT Q'ty of panels Total input power Inverter Model
1 pcs in serial1 pcs550 W1.5KW-5.5KW
2 pcs in serial2 pcs1,150 W1.5KW-5.5KW
3 pcs in serial3 pcs1,650 W1.5KW-5.5KW
4 pcs in serial4 pcs2,200 W2.5KW-5.5KW
5 pcs in serial5 pcs2,750 W2.5KW-5.5KW
6 pcs in serial6 pcs3,300 W3.5KW-5.5KW
7 pcs in serial7 pcs3,850 W3.5KW-5.5KW
8 pcs in serial8 pcs4,400 W5.5KW
9 pcs in serial9 pcs4,950 W5.5KW
4 pieces in serial and 2 sets in parallel8 pcs4,400 W5.5KW
5 pieces in serial and 2 sets in parallel10 pcs5,500 W5.5KW

PV Module Wire Connection:

Please follow below steps to implement PV module connection:

  1. Remove insulation sleeve 10 mm for positive and negative conductors.
  2. Check correct polarity of connection cable from PV modules and PV input connectors. Then, connect positive pole (+) of connection cable to positive pole (+) of PV input connector. Connect negative pole (-) of connection cable to negative pole (-) of PV input connector.
  3. Make sure the wires are securely connected.

Final Assembly

After connecting all wirings, put the bottom cover back by screwing two screws.

OPERATION

Power ON/OFF

Once the unit has been properly installed and the batteries are connected well, simply press the On/Off switch (located on the bottom of the case) to turn on the unit.

Operation and Display Panel

The operation and display panel, shown below, is on the front panel of the inverter. It includes three indicators, four function keys, and an LCD display, indicating the operating status and input/output power information.

Diagram of the front panel showing the LCD display, LED indicators (AC/INV, CHG, FAULT), and function keys (ESC, UP, DOWN, ENTER).

LED Indicator:

LED Indicator Color Status Messages
AC/INV Green Solid On Output is powered by utility in Line mode.
Flashing Output is powered by battery or PV in battery mode.
CHG Green Solid On Battery is fully charged.
Flashing Battery is charging.
FAULT Red Solid On Fault occurs in the inverter.
Flashing Warning condition occurs in the inverter.

Function Keys:

Function Key Description
ESCTo exit setting mode
UPTo go to previous selection
DOWNTo go to next selection
ENTERTo confirm the selection in setting mode or enter setting mode

LCD Setting

After pressing and holding the ENTER button for 3 seconds, the unit will enter setting mode. Press "UP" or "DOWN" button to select setting programs. Then, press "ENTER" button to confirm the selection or ESC button to exit.

Setting Programs:

Program Description Selectable option
01
Output source priority: To configure load power source priority		 Utility first (default)
Utility will provide power to the loads as first priority. Solar and battery energy will provide power to the loads only when utility power is not available.
Solar first
Solar energy provides power to the loads as first priority. If solar energy is not sufficient to power all connected loads, battery energy will supply power to the loads at the same time.
SBU priority
Utility provides power to the loads only when any one condition happens:
- Solar energy is not available
- Battery voltage drops to either low-level warning voltage or the setting point in program 12.
SUB priority
Solar energy provides power to the loads as first priority. If solar energy is not sufficient to power all connected loads, battery energy will supply power to the loads at the same time. Utility provides power to the loads only when battery voltage drops to either low-level warning voltage or the setting point in program 12.
02
Maximum charging current: To configure total charging current for solar and utility chargers. (Max. charging current = utility charging current + solar charging current)		 60A (default)
 If selected, acceptable charging current range will be from Max. AC charging current to Max. charging current of SPEC, but it shouldn't be less than the AC charging current (program 11).
03
AC input voltage range		 Appliances (default) If selected, acceptable AC input voltage range will be within 90-280VAC.
UPS If selected, acceptable AC input voltage range will be within 170-280VAC.
Generator If selected, acceptable AC input voltage range will be within 90-280VAC and compatible with generators.
Note: Because generators are unstable, maybe the output of inverter will be unstable too.
05
Battery type		 AGM (default)
Flooded
User-Defined If "User-Defined" is selected, battery charge voltage and low DC cut-off voltage can be set up in program 26, 27 and 29.
Lithium battery without communication If "LIB" is selected, the battery default value is fit for lithium battery without communication battery charge voltage and low DC cut-off voltage can be set up in program 26, 27 and 29.
06
Auto restart when overload occurs		 Restart disable Restart enable (default)
07
Auto restart when over temperature occurs		 Restart disable Restart enable (default)
08
Output voltage		 220V
230V (default)
240V
09
Output frequency		 50Hz (default)
60Hz
10
Auto bypass
When selecting "auto", if the mains power is normal, it will automatically bypass, even if the switch is off.		 manual(default)
auto
11
Maximum utility charging current		 30A (default) If selected, acceptable charging current range will be within 2-Max. AC charging current of SPEC.
12
Setting voltage point back to utility source when selecting “SBU priority" or "Solar first" in program 01.		 48V models:46V (default) Setting range is from 44.0V to 57.2V for 48v model, but the max setting value must be less than the value of program13 and the minimum setting value must be more than the value of 29.
24V models:23V (default) Setting range is from 22.0V to 28.6V for 24v model, but The max setting value must be less than the value of program13 and the minimum setting value must be more than the value of 29.
12V models:11.5V (default) Setting range is from 11.0V to 14.3V for 12v model, but The max setting value must be less than the value of program13 and the minimum setting value must be more than the value of 29.
13
Setting voltage point back to battery mode when selecting "SBU priority" or "Solar first" in program 01.		 Battery fully charged (default)
48V models: Setting range is from 48V to full (the value of program26-0.4V), but the max setting value must be more than the value of program12.
24V models:
12V models:		 Setting range is from 24V to full (the value of program26-0.4V), but the max setting value must be more than the value of program12.
Setting range is from 12V to full (the value of program13-0.4V), but the max setting value must be more than the value of program12.
16
Charger source priority:
To configure charger source priority		 Solar first Solar energy will charge battery as first priority.
Solar and Utility (default) Solar energy and utility will charge battery at the same time.
Only Solar Solar energy will be the only charger source no matter utility is available or not.
If this inverter/charger is working in Battery mode, only solar energy can charge battery. Solar energy will charge battery if it's available and sufficient.
18
Buzzer mode		 Mode1 Buzzer mute
Mode2 The buzzer sounds when the input source changes or there is a specific warning or fault
Mode3 The buzzer sounds when there is a specific warning or fault
Mode4(default) The buzzer sounds when there is a fault
19
Auto return to default display screen		 Return to default display screen (default) If selected, no matter how users switch display screen, it will automatically return to default display screen (Input voltage /output voltage) after no button is pressed for 1 minute.
Stay at latest screen If selected, the display screen will stay at latest screen user finally switches.
20
Backlight control		 Backlight on (default)
Backlight off
23
Overload bypass:
When enabled, the unit will transfer to line mode if overload occurs in battery mode.		 Bypass disable Bypass enable(default)
25
Modbus ID Setting		 Modbus ID Setting Range : 001(default)~247
26
Bulk charging voltage (C.V voltage)		 If self-defined is selected in program 5, this program can be set up. But the setting value must be more than or equal the value of program27. Increment of each click is 0.1V.
12V models: Default 14.1V, setting range is from 12.0V to 15.5V,
24V models: Default 28.2V, setting range is from 24.0V to 30.0V,
48V models: Default 56.4V, setting range is from 48.0V to 62.0V.
27
Floating charging voltage		 If self-defined is selected in program 5, this program can be set up.
12V models default setting: 13.5V
Setting range is from 12.0V to the value of program 26
24V models default setting: 27.0V
Setting range is from 24.0V to the value of program 26
48V models default setting: 54.0V
Setting range is from 48.0V to the value of program 26
29
Low DC cut-off voltage		 If self-defined is selected in program 5, this program can be set up. The setting value must be less than the value of program12. Increment of each click is 0.1V.Low DC cut-off voltage will be fixed to setting value no matter what percentage of load is connected.
12V models default setting: 10.5v
Setting range is from 10.0V to 13.5V
24V models default setting: 21.0v
Setting range is from 20.0V to 27.0V
48V models default setting: 42.0V
Setting range is from 40.0V to 54.0V
32
Bulk charging time (C.V stage)		 Automatically (Default): If selected, inverter will judge this charging time automatically.
5 min
900 min		 The setting range is from 5 min to 900 min. Increment of each click is 5 min.
33
Battery equalization		 Battery equalization If "USE" is selected in program 05, this program can be set up.
Battery equalization disable (default)
If "Flooded" or "User-Defined" is selected in program 05, this program can be set up.
34
Battery equalization voltage		 12V models default setting is 14.6V. Setting range is from floating voltage ~ 15.5V. Increment of each click is 0.1V.
24V models default setting is 29.2V. Setting range is from floating voltage ~ 30V. Increment of each click is 0.1V.
48V models default setting is 58.4V. Setting range is from floating voltage ~ 62V. Increment of each click is 0.1V.
35
Battery equalized time		 60min (default) Setting range is from 0 min to 900min.
120min (default)
36
Battery equalized timeout		 Setting range is from 0min to 900 min.
37
Equalization interval		 30days (default) Setting range is from 1 to 90 days.
39
Equalization activated immediately		 Enable If equalization function is enabled in program 33, this program can be set up. If "Enable" is selected in this program, it's to activate battery equalization immediately and LCD main page will shows " E9 ". If "Disable" is selected, it will cancel equalization function until next activated equalization time arrives based on program 37 setting. At this time, " E9 " will not be shown in LCD main page..
Disable (default)
41
Automatic activation for lithium battery.
Note:
This function is just available for supporting lithium battery activation models, other models are reserve setting item		 Disable automatic activation (default)
When Program05 is selected "LIx" or "User-Defined "as lithium battery and when the battery is not detected, the unit will activate automatically the lithium battery at a time. If you want to activate automatically the lithium battery, you must restart the unit.
42
Manual activation for lithium battery.
Note:
This function is just available for supporting lithium battery activation models, other models are reserve setting item		 Default: disable activation
When Program05 is selected "LIx" as lithium battery, when the battery is not detected, If you want to activate the lithium battery at a time, you could selected it.
46
Maximum discharge current protection when selecting "single" in program 28		 Default OFF
Disable current discharge current protection function
Only available in Single model. When utility is available, it turns to utility model and battery discharge stops after the battery discharge current exceeded the setting value. When utility is unavailable, warning occurs and battery discharge lasts after the battery discharge current exceeded the setting value.

BATTERY EQUALIZATION

Equalization function is added into charge controller. It reverses the buildup of negative chemical effects like stratification, a condition where acid concentration is greater at the bottom of the battery than at the top. Equalization also helps to remove sulfate crystals that might have built up on the plates. If left unchecked, this condition, called sulfation, will reduce the overall capacity of the battery. Therefore, it's recommended to equalize battery periodically.

How to Apply Equalization Function

You must enable battery equalization function in monitoring LCD setting program 33 first. Then, you may apply this function in device by either one of following methods:

  1. Setting equalization interval in program 37.
  2. Active equalization immediately in program 39.

When to Equalize

In float stage, when the setting equalization interval (battery equalization cycle) is arrived, or equalization is active immediately, the controller will start to enter Equalize stage.

Diagram showing battery charging stages: BULK, ABSORPTION, FLOAT, EQUALIZE, FLOAT. It illustrates voltage and time progression.

In Equalize stage, the controller will supply power to charge battery as much as possible until battery voltage raises to battery equalization voltage. Then, constant-voltage regulation is applied to maintain battery voltage at the battery equalization voltage. The battery will remain in the Equalize stage until setting battery equalized time is arrived.

Diagram showing Equalize stage with Equalize Voltage, Absorption Voltage, Float Voltage, and Equalize Charging Time.

However, in Equalize stage, when battery equalized time is expired and battery voltage doesn't rise to battery equalization voltage point, the charge controller will extend the battery equalized time until battery voltage achieves battery equalization voltage. If battery voltage is still lower than battery equalization voltage when battery equalized timeout setting is over, the charge controller will stop equalization and return to float stage.

Diagram showing Equalize stage with Equalize Voltage, Absorption Voltage, Float Voltage, and Equalize Charging Timeout.

SETTING FOR LITHIUM BATTERY

Setting for lithium battery without communication

This suggestion is used for lithium battery application and to avoid lithium battery BMS protection without communication. Please finish the setting as follow:

  1. Before starting setting, you must get the battery BMS specification:
    A. Max charging voltage
    B. Max charging current
    C. Discharging protection voltage
  2. Set battery type as "LIB"
AGM (default) Flooded User-Defined
05
Battery type		 If "User-Defined" is selected, battery charge voltage and low DC cut-off voltage can be set up in program 26, 27 and 29.
Lithium battery without communication If "LIB" is selected, the battery default value is fit for lithium battery without communication battery charge voltage and low DC cut-off voltage can be set up in program 26, 27 and 29.
  1. Set C.V voltage as Max charging voltage of BMS-0.5V.
26
Bulk charging voltage (C.V voltage)		 If self-defined is selected in program 5, this program can be set up. But the setting value must be more than or equal the value of program27. Increment of each click is 0.1V.
12V models: Default 14.1V, setting range is from 12.0V to 15.5V,
24V models: Default 28.2V, setting range is from 24.0V to 30.0V,
48V models: Default 56.4V, setting range is from 48.0V to 62.0V.
27
Floating charging voltage		 If self-defined is selected in program 5, this program can be set up.
12V models default setting: 13.5V
Setting range is from 12.0V to the value of program 26
24V models default setting: 27.0V
Setting range is from 24.0V to the value of program 26
48V models default setting: 54.0V
Setting range is from 48.0V to the value of program 26
29
Low DC cut-off voltage		 If self-defined is selected in program 5, this program can be set up. The setting value must be less than the value of program12. Increment of each click is 0.1V.Low DC cut-off voltage will be fixed to setting value no matter what percentage of load is connected.
12V models default setting: 10.5v
Setting range is from 10.0V to 13.5V
24V models default setting: 21.0v
Setting range is from 20.0V to 27.0V
48V models default setting: 42.0V
Setting range is from 40.0V to 54.0V
  1. Set Max charging current which must be less than the Max charging current of BMS.
02
Maximum charging current:
To configure total charging current for solar and utility chargers.
(Max. charging current = utility charging current + solar charging current)		 60A (default) If selected, acceptable charging current range will be within 1- Max. charging current of SPEC, but it shouldn't be less than the AC charging current (program 11)
  1. Setting voltage point back to utility source when selecting "SBU priority" or "Solar first" in program 01.The setting value must be ≥Low DC cut-off voltage+1V, or else the inverter will have a warning as battery voltage low.
12
Setting voltage point back to utility source when selecting "SBU priority" or "Solar first" in program 01.		 48V models:46V (default)
Setting range is from 44.0V to 57.2V for 48v model, but the max setting value must be less than the value of program13.		 24V models:23V (default)
Setting range is from 22.0V to 28.6V for 24v model, but The max setting value must be less than the value of program13.
12V models:11.5V (default)
Setting range is from 11.0V to 14.3V for 12v model, but The max setting value must be less than the value of program13.

Remark:

  1. You'd better to finish setting without turning on the inverter (just let the LCD show, no output).
  2. When you finish setting, please restart the inverter.

Fault Reference Code

Fault Code Fault Event Icon on
01Over temperature of inverter module01-
02Over temperature of DCDC module02-
03Battery voltage is too high03-
04Over temperature of PV module04-
05Output short circuited.05-
06Output voltage is too high.06-
07Overload time out07-
08Bus voltage is too high08-
09Bus soft start failed09-
10PV over current10-
11PV over voltage11-
12DCDC over current12-
13Over current or surge13-
14Bus voltage is too low14-
15Inverter failed (Self-checking)15-
18Op current offset is too high18-
19Inverter current offset is too high19-
20DC/DC current offset is too high20-
21PV current offset is too high21-
22Output voltage is too low22-
23Inverter negative power23-

Warning Indicator

Warning Code Warning Event Audible Alarm Icon flashing
02 Temperature is too High Beep three times every second 02-
04 Low battery Beep once every second 04-
07 Overload Beep once every 0.5 second OVER LOAD
10 Output power derating Beep twice every 3 seconds 10-
14 Fan blocked None 14-
15 PV energy is low Beep twice every 3 seconds 15-
19 Lithium Battery communication is failed Beep once every 0.5 second 19-
21 Lithium Battery over current None 21-
E9 Battery equalization None E9-
bP Battery is not connected None bP-

SPECIFICATIONS

Table 1 Line Mode Specifications

INVERTER MODEL 1.5KW 1.5KW 2.5KW 3.2KW 5.5KW
Input Voltage WaveformSinusoidal (Utility or Generator)
Nominal Input Voltage230Vac
Low Loss Voltage170Vac±7V (UPS)
90Vac±7V (Appliances)
Low Loss Return Voltage180Vac±7V (UPS);
100Vac±7V (Appliances)
High Loss Voltage280Vac±7V
High Loss Return Voltage270Vac±7V
Max AC Input Voltage300Vac
Nominal Input Frequency50Hz / 60Hz (Auto detection)
Low Loss Frequency40±1Hz
Low Loss Return Frequency42±1Hz
High Loss Frequency65±1Hz
High Loss Return Frequency63±1Hz
Output Short Circuit ProtectionBattery mode: Electronic Circuits
Efficiency (Line Mode)>95% ( Rated R load, Battery full charged )
Transfer Time10ms typical (UPS);
20ms typical (Appliances)

Output power derating: When AC input voltage drops to 95V or 170V depending on models, the output power will be derated.

Graph showing Output Power vs. Input Voltage, illustrating that output power is derated when AC input voltage drops to 95V or 170V.

Table 2 Inverter Mode Specifications

INVERTER MODEL 1.5KW 1.5KW 2.5KW 3.2KW 5.5KW
Rated Output Power1.5KVA/1.5KW2.5KVA/2.5KW3.2KVA/3.2KW5.5KVA/5.5KW
Output Voltage WaveformPure Sine Wave
Output Voltage Regulation230Vac±5%
Output Frequency50Hz or 60Hz
Peak Efficiency94%
Surge Capacity2* rated power for 5 seconds
Nominal DC Input Voltage12Vdc24Vdc48Vdc
Cold Start Voltage11.0Vdc23.0Vdc46.0Vdc
Low DC Warning Voltage
Just for AGM and Flooded		11.0Vdc
@ load < 20%
10.7Vdc
@ 20% ≤ load < 50%
10.1Vdc
@ load ≥ 50%		22.0Vdc
21.4Vdc
20.2Vdc		40.4Vdc
42.8Vdc
44.0Vdc
Low DC Warning Return Voltage
Just for AGM and Flooded		11.5Vdc
@ load < 20%
11.2Vdc
@ 20% ≤ load < 50%
10.6Vdc
@ load ≥ 50%		23.0Vdc
22.4Vdc
21.2Vdc		46.0Vdc
44.8Vdc
42.4Vdc
Low DC Cut-off Voltage
Just for AGM and Flooded		10.5Vdc
@ load < 20%
10.2Vdc
@ 20% ≤ load < 50%
9.6Vdc
@ load ≥ 50%		21.0Vdc
20.4Vdc
19.2Vdc		42.0Vdc
40.8Vdc
38.4Vdc

Table 3 Charge Mode Specifications

Utility Charging Mode

INVERTER MODEL 1.5KW 1.5KW 2.5KW 3.2KW 5.5KW
Max Charging Current (PV+AC)
(@ VI/P=230Vac)		100Amp60Amp80Amp100Amp100Amp
Max Charging Current (AC)(@ VI/P=230Vac)60Amp
Bulk Charging Voltage
Flooded Battery
AGM / Gel Battery		14.6Vdc
14.1Vdc		29.2Vdc
28.2Vdc		58.4Vdc
56.4Vdc
Floating Charging Voltage13.5Vdc27Vdc54Vdc
Overcharge Protection15.5 Vdc33Vdc63Vdc
Charging Algorithm3-Step
Diagram showing Charging Curve: Battery Voltage, per cell vs. Charging Current, %. Includes stages: Bulk (Constant Current), Absorption (Constant Voltage), and Maintenance (Floating). Time markers T0 and T1 are indicated.

Solar Input

INVERTER MODEL 1.5KW 1.5KW 2.5KW 3.2KW 5.5KW
Rated Power2000W2000W3000W4000W5500W
Max. PV Array Open Circuit Voltage500Vdc
PV Array MPPT Voltage Range30Vdc~500Vdc
Max. Input Current15A15A15A15A18A
Max. Charging Current(PV)100A60A100A100A100A

Table 4 General Specifications

INVERTER MODEL 1.5KW 1.5KW 2.5KW 3.2KW 5.5KW
Operating Temperature Range -10°C to 55°C
Storage temperature -15°C~ 60°C
Humidity 5% to 95% Relative Humidity (Non-condensing)
Dimension(D*W*H), mm330x278x98438x295x105
Net Weight, kg3.83.958.2

TROUBLE SHOOTING

Problem LCD/LED/Buzzer Explanation / Possible cause What to do
Unit shuts down automatically during startup process. LCD/LEDs and buzzer will be active for 3 seconds and then complete off. The battery voltage is too low 1. Re-charge battery.
2. Replace battery.
No response after power on. No indication. 1. The battery voltage is far too low.
2. Battery polarity is connected reversed.		 1. Check if batteries and the wiring are connected well.
2. Re-charge battery.
3. Replace battery.
Mains exist but the unit works in battery mode. Input voltage is displayed as 0 on the LCD and green LED is flashing. Input protector is tripped Check if AC breaker is tripped and AC wiring is connected well.
When the unit is turned on, internal relay is switched on and off repeatedly. Green LED is flashing. Insufficient quality of AC power. (Shore or Generator) 1. Check if AC wires are too thin and/or too long.
2. Check if generator (if applied) is working well or if input voltage range setting is correct. (UPS→Appliance)
Buzzer beeps continuously and red LED is on. Green LED is flashing. Set "Solar First" as the priority of output source. Change output source priority to Utility first.
LCD display and LEDs are flashing Battery is disconnected. Check if battery wires are connected well.
Fault code 07 Overload error. The inverter is overload 110% and time is up. Reduce the connected load by switching off some equipment.
Fault code 05 Output short circuited. Check if wiring is connected well and remove abnormal load.
Fault code 02 Internal temperature of inverter component is over 100°C. Check whether the air flow of the unit is blocked or whether the ambient temperature is too high.
Fault code 03 Battery is over-charged. Return to repair center.
The battery voltage is too high. Check if spec and quantity of batteries are meet requirements.
Fault code 06/22 Output abnormal (Inverter voltage below than 190Vac or is higher than 260Vac) 1. Reduce the connected load.
2. Return to repair center
Fault code 08/09/15 Internal components failed. Return to repair center.
Fault code 13 Over current or surge. Restart the unit, if the error happens again, please return to repair center.
Fault code 14 Bus voltage is too low. If the wires is connected well, please return to repair center.

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