Introduction
Thank you for choosing the Qoltec Off-Grid Hybrid Solar Inverter. This user manual will guide you through the installation, operation, and troubleshooting of your new solar inverter. Please read this manual carefully before installation and use. Keep it for future reference.
About This User Manual
This manual covers the configuration, installation, operation, and troubleshooting of the device. It includes safety and installation instructions, as well as information on tools and wiring.
About the Product
This is a multi-functional inverter that combines the functions of an inverter, solar charger, and battery charger, providing uninterrupted power supply support in one package. The versatile LCD display offers user-adjustable and easy-to-use button functions, such as battery charging current, AC or solar charging priority, and allowable input voltage for different applications.
Product Components:
- 1. LCD Display
- 2. Status Indicator
- 3. Charging Indicator Light
- 4. Fault Indicator
- 5. Function Buttons
- 6. Grounding Terminal
- 7. AC Input Terminal
- 8. AC Output Terminal
- 9. Battery Input Terminal
- 10. PV Input Terminal
- 11. Wi-Fi Connection Port (Optional)
- 12. On/Off Switch
Installation
I. Preparation
Before installation, inspect the unit for any damage. Ensure all components are present: Solar Inverter and User Manual.
To access internal components, remove the bottom cover by unscrewing three screws.
II. Unit Installation
Consider the following when selecting an installation location:
- Do not install the inverter on flammable building materials.
- Install on a solid substrate.
- Mount the inverter at eye level for easy access to the LCD display.
- The ambient temperature should be between 0°C and 55°C for optimal performance.
- The recommended installation position is vertically against a wall.
- Ensure adequate clearance around the unit for heat dissipation and cable management as shown in the diagram.
NOTE: SUITABLE FOR INSTALLATION ON CONCRETE OR OTHER NON-COMBUSTIBLE SURFACES ONLY.
Secure the unit using three screws (M4 or M5 recommended).
III. Battery Connection
NOTE: A separate DC fuse or disconnect device must be installed between the battery and the inverter for safe operation and compliance. Use the recommended amperage from the table below to determine the correct fuse or breaker size.
WARNING: All wiring should be performed by qualified personnel.
WARNING: Use the correct cable size, stripping length (L2), and tinning length (L1) as specified for safe and efficient operation.
| Model | Max. Current Rating | Battery Capacity | Cable Size | Cable (mm²) | L1 (mm) | L2 (mm) | Torque |
|---|---|---|---|---|---|---|---|
| 1500W-24 | 70A | 100AH | 6 AWG | 13.3 | 3 | 18 | 2~3 Nm |
| 2500W-24 | 100A | 100AH | 4 AWG | 21.15 | 3 | 18 | 2~3 Nm |
| Other models | 140A | 100AH | 2 AWG | 38 | 3 | 18 | 2~3 Nm |
Steps to connect the battery:
- Strip 18 mm of insulation from the positive and negative conductors.
- Connect all batteries as required by the unit, using the recommended battery capacity.
- Slide the battery cable flat into the inverter's battery terminal, ensuring screws are tightened to 2-3 Nm. Verify correct polarity for both battery and inverter/charger, and ensure battery cables are securely screwed into the battery terminal.
WARNING: Risk of electric shock due to high battery voltage.
WARNING: Do not place anything between the flat part of the inverter terminal, as it may cause overheating.
WARNING: Do not apply anti-oxidant to terminals before they are properly connected.
NOTE: Ensure correct polarity (+ to +, - to -) before making the final DC connection or closing the DC switch/breaker.
IV. AC Input/Output Connection
NOTE: Install a separate AC switch between the inverter and the AC power source before connecting to the AC power source. This ensures safe disconnection for maintenance and protects the AC input from overcurrent. Recommended AC breaker specification is 50A.
NOTE: Do not mix up the "IN" and "OUT" terminal blocks.
WARNING: All wiring should be performed by qualified personnel.
WARNING: Use the correct cable size for AC input connection for safety and efficiency.
| Model | Cross Section | Torque Value |
|---|---|---|
| 1.5KVA | 12 AWG | 1.4 ~ 1.6 Nm |
| 2.5KVA/3.5KVA | 10 AWG | 1.4 ~ 1.6 Nm |
| 5.5KVA | 8 AWG | 1.4 ~ 1.6 Nm |
Steps to connect AC input/output:
- Ensure the DC switch is open before connecting AC input/output.
- Strip 10mm of insulation from the six conductors. Shorten the phase conductor (L) and neutral conductor (N) by 3mm.
- Connect AC input wires according to polarity (PE first: yellow-green, L: brown, N: blue) and tighten terminal screws.
- Connect AC output wires according to polarity (PE first: yellow-green, L: brown, N: blue) and tighten terminal screws.
- Verify all connections are correct.
NOTE: Appliances like air conditioners require a 2-3 minute restart delay for gas equalization. Connecting them immediately after a power interruption can cause damage. Check with the appliance manufacturer for a time-delay function. Otherwise, the inverter may trigger an overload fault, potentially causing internal damage to the appliance.
V. PV Connection
NOTE: Install a separate DC disconnect switch between the inverter and PV modules before connecting.
WARNING! All connections must be made by qualified personnel.
WARNING! Use the correct cable size for PV module connection for safety and efficiency.
| Model | Typical Amperage | Cable Size | Torque |
|---|---|---|---|
| 1.5KVA | 15A | 12 AWG | 1.4 ~ 1.6 Nm |
| 2.5KVA | 15A | 12 AWG | 1.4 ~ 1.6 Nm |
| 3.5KVA | 15A | 12 AWG | 1.4 ~ 1.6 Nm |
| 5.5KVA | 18A | 12 AWG | 1.4 ~ 1.6 Nm |
| 6.2KVA | 27A | 12 AWG | 1.4 ~ 1.6 Nm |
PV Module Selection:
Consider the following parameters when selecting PV modules:
- The open circuit voltage (Voc) of the PV modules must not exceed the inverter's maximum open circuit voltage.
- The open circuit voltage (Voc) of the PV modules must be greater than the minimum battery voltage.
| Solar Charging Mode | |||
|---|---|---|---|
| INVERTER MODEL | 1.5KW-3.5KW | 5.5KVA | |
| Max. PV Array Open Circuit Voltage | 500VDC | ||
| PV Field MPPT Voltage Range | 30VDC - 500VDC | 60VDC - 500VDC | |
| Max. PV INPUT CURRENT | 15A | 18A |
Recommended module configurations for 450 Wp and 550 Wp solar modules:
| SOLAR INPUT | Number of Panels | Total Input Power | Model | |
|---|---|---|---|---|
| Panel Specs (Ref.) | 1 in series | 1 | 450W | 1.5KW-5.5KW |
| 2 units in series | 2 | 900 W | ||
| 3 units in series | 3 | 1,350 W | ||
| 4 units in series | 4 | 1,800 W | ||
| 5 units in series | 5 | 2,250 W | ||
| 6 units in series | 6 | 2,700 W | ||
| 7 units in series | 7 | 3,150 W | ||
| 8 units in series | 8 | 3,600 W | ||
| 9 units in series | 9 | 4,050 W | 5.5KVA | |
| 10 units in series | 10 | 4,500 W | ||
| 11 units in series | 11 | 4,950 W | ||
| 12 units in series | 12 | 5,400 W | ||
| 6 units in series and 2 units parallel | 12 | 5,400 W | ||
| Solar Panel Specs (Ref.) | Number of Panels | Total Input Power | Model | |
| 1 in series | 1 | 550W | 1.5KW-5.5KW | |
| 2 units in series | 2 | 900 W | 1.5KVA-5.5KW | |
| 3 units in series | 3 | 1,650 W | ||
| 4 units in series | 4 | 2,200 W | 2.5KVA-5.5KW | |
| 5 units in series | 5 | 2,750 W | ||
| 6 units in series | 6 | 3,300 W | 3.5KW-5.5KW | |
| 50.32Vdc | 7 units in series | 7 | 3,850 W | |
| - Isc: 13.70A | 8 units in series | 8 | 4,400 W | 5.5KW |
| 9 units in series | 9 | 4,950 W | ||
| 4 series and 2 parallel series | 8 | 4,400 W | ||
| 5 series series and 2 parallel series | 10 | 5,500 W |
PV Module Cable Connection:
- Strip 10 mm insulation from the positive and negative cables.
- Check the correct polarity of the connection cable for PV modules and PV input terminals. Connect the positive (+) cable to the positive (+) PV input terminal and the negative (-) cable to the negative (-) PV input terminal.
- Ensure the wiring is correct.
VI. Final Assembly
Once all wiring is complete, replace the bottom cover and secure it with the two screws.
Operation
I. Powering On/Off
After correct installation and battery connection, turn on the unit by pressing the On/Off switch.
II. Operation and Display Panel
The operation and display panel on the front of the inverter features three indicator lights, four function buttons, and an LCD screen displaying operational status, input/output power, and power supply information.
| LED Indicator | Color | Status | Message |
|---|---|---|---|
| AC/INV | Green | Solid | Output is supplied directly from the mains "Line Mode". |
| Blinking | Output is powered by battery or PV in "Battery Mode". | ||
| CHG | Green | Solid | Battery is fully charged. |
| Blinking | Battery is charging. | ||
| FAULT | Red | Solid | An error has occurred in the inverter. |
| Blinking | A warning has occurred in the inverter. |
Button Functions
| Button | Description |
|---|---|
| ESC | Exit setting mode. |
| UP | Move to the previous setting. |
| DOWN | Move to the next option. |
| ENTER | Confirm selection in setting mode or enter setting mode. |
III. LCD Display Settings
Press and hold the ENTER button for 3 seconds to enter setting mode. Use UP/DOWN buttons to select programs and ENTER to confirm or ESC to exit.
Program Settings
| Program | Description | Selection Options |
|---|---|---|
| 01 | Output Source Priority: Define load source priority. | Utility First: Power is supplied to consumers first from the mains. Solar and battery power supply energy only when mains power is unavailable. Solar First: Solar energy supplies power to consumers first. If solar energy is insufficient, battery energy supplies power simultaneously. Mains power supplies energy only when solar energy is unavailable or battery voltage is low. SBU Priority: Solar energy supplies power to consumers first. If solar energy is insufficient, battery energy supplies power simultaneously. Mains power supplies power only when battery voltage drops to a low warning level or the set value in Program 12. SUB Priority: Solar energy charges the battery first, then supplies power to consumers. If solar energy is insufficient, mains power supplies consumers simultaneously. SUF Priority: If solar energy is sufficient to power consumers and charge the battery, solar energy can be fed back to the grid. If solar energy is insufficient, mains power supplies consumers simultaneously. |
| 02 | Max. Charging Current: Set the total charging current from solar and mains chargers. (Max Charging Current = Mains Charging Current + Solar Charging Current). | 60A (Default). The allowable charging current range is from the mains power's maximum charging current to the specified maximum charging current. However, the charging current must not be less than the AC charging current set in Program 11. |
| 03 | AC Input Voltage Range | Appliance (Default): Allowable AC input voltage range is 90-280 VAC. UPS: Allowable AC input voltage range is 170-280 VAC. Generator: Allowable AC input voltage range is 170-280 VAC and is compatible with generators. Note: Due to generator instability, the inverter output may also be unstable. |
| 05 | Battery Type | AGM (Default) Flooded User Defined: If "User Defined" is selected, battery charging voltage and low DC cut-off voltage can be set in Programs 26, 27, and 29. Lithium Battery without communication: If 'LIB' is selected, the default settings are suitable for lithium batteries without communication. Battery charging voltage and low DC cut-off voltage can be set in Programs 26, 27, and 29. |
| 06 | Auto Restart after Overload | Disable Auto Restart Enable Auto Restart (Default) |
| 07 | Auto Restart after Over Temperature | Disable Auto Restart Enable Auto Restart (Default) |
| 08 | Output Voltage | 220V 230V (Default) 240V |
| 09 | Output Frequency | 50 Hz (Default) 60 Hz |
| 10 | Auto Bypass | Manual (Default) Auto: The system will automatically bypass even if the switch is in the "off" position, provided mains supply is available. |
| 11 | Max. AC Charging Current | 30A (Default). If selected, the allowable charging current range is from 2A to the specified maximum AC charging current. |
| 12 | Setting the mains voltage point when 'SBU priority' or 'Solar first' is selected in Program 01. | 48V Models: Default is 46V. Range: 44.0V - 57.2V. Max setting must be less than Program 13 value. Min setting must be greater than Program 29 value. 24V Models: Default is 23V. Range: 22.0V - 28.6V. Max setting must be less than Program 13 value. Min setting must be greater than Program 29 value. 12V Models: Default is 11.5V. Range: 11.0V - 14.3V. Max setting must be less than Program 13 value. Min setting must be greater than Program 29 value. |
| 13 | Setting the voltage point to battery mode when "SBU priority" or "Solar first" is selected in Program 01. | Battery Fully Charged (Default): 48V Models: Range is 48V up to value equal to Program 26 minus 0.4V. Max setting must be greater than Program 12 value. 24V Models: Range is 24V up to value equal to Program 26 minus 0.4V. Max setting must be greater than Program 12 value. 12V Models: Range is 12V up to value equal to Program 13 minus 0.4V. Max setting must be greater than Program 12 value. |
| 16 | Charging Source Priority: Define charging source priority. | Solar (Default): Solar energy has priority for battery charging. Mains power charges the battery only when solar energy is unavailable. Solar and Mains Simultaneously: Solar energy and mains power charge the battery simultaneously. Solar Only: Solar energy is the only charging source regardless of mains availability. If the inverter operates in battery mode, solar energy is the only charging source. The battery is charged only when solar energy is available and sufficient. |
| 18 | Buzzer Mode | Mode 1: Buzzer disabled. Mode 2: Buzzer activates on power transfer or specific warning/fault. Mode 3: Buzzer activates on specific warning or fault. Mode 4 (Default): Buzzer activates on fault. |
| 19 | Auto Return to Default Display | Return to default display (Default): The display automatically returns to the default screen (input/output voltage) after 1 minute of inactivity. Stay on previous screen: The display remains on the user's last selected screen. |
| 20 | Backlight Control | Backlight ON (Default) Backlight OFF |
| 23 | Overload Bypass: When enabled, the unit switches to mains mode if an overload occurs in battery mode. | Bypass Disabled Bypass Enabled (Default) |
| 25 | Modbus ID Setting | Modbus ID setting range: 001 (Default) - 247 |
| 26 | Charging Voltage Buffer (C.V. Voltage) | If "User Defined" is selected in Program 05, this program can be set. The setting value must be equal to or greater than the value in Program 27. An increment of 0.1V is possible with each click. 24V Models: Default 28.2V, Range 24.0V - 30.0V. 48V Models: Default 56.4V, Range 48.0V - 62.0V. |
| 27 | Float Charging Voltage | If "User Defined" is selected in Program 05, this program can be set. 12V Models: Default 13.5V, Range 12.0V to Program 26 value. 24V Models: Default 27.0V, Range 24.0V to Program 26 value. 48V Models: Default 54.0V, Range 48.0V to Program 26 value. |
| 29 | Low DC Cut-off Voltage | If "User Defined" is selected in Program 05, this program can be set. The setting value must be less than the value in Program 12. An increment of 0.1V is possible with each click. The low DC cut-off voltage remains fixed at the set value regardless of the connected load. 12V Models: Default 10.5V, Range 10.0V - 13.5V. 24V Models: Default 21.0V, Range 20.0V - 27.0V. 48V Models: Default 42.0V, Range 40.0V - 54.0V. |
| 32 | Buffer Charging Time (C.V. Phase) | Automatic (Default) If selected, the inverter estimates the charging time automatically. 5 min to 900 min: Range is 5 min to 900 min. An increment of 5 min is possible with each click. If "User Defined" is selected in Program 05, this program can be set. |
| 33 | Battery Equalization | Battery Equalization Enabled Battery Equalization Disabled (Default) If "Flooded" or "User-defined" is selected in Program 05, this program can be set. |
| 34 | Battery Voltage for Equalization | 12V Models: Range is 12V up to value equal to Program 13 minus 0.4V. Max setting must be greater than Program 12 value. 24V Models: Default 29.2V. Range is float voltage to 30V. An increment of 0.1V is possible with each click. 48V Models: Default 58.4V. Range is float voltage to 64V. An increment of 0.1V is possible with each click. |
| 35 | Battery Equalization Time | 60 min (Default). Range is 0 min to 900 min. |
| 36 | Battery Equalization Interval | 120min (Default). Range is 0 min to 900 min. |
| 37 | Equalization Interval | 30 days (Default). Range is 1-90 days. |
| 39 | Immediate | Enabled: If equalization function is enabled in Program 33, selecting "Enable" activates equalization immediately, displaying "E9" on the LCD. Selecting "Disable" cancels equalization until the next scheduled interval. Disabled (Default) |
| 41 | Auto Activation for Lithium Battery | Disable Auto Activation (Default) When "LIx" is selected for lithium battery in Program 05 and the battery is not recognized, the unit automatically activates the lithium battery at the specified time. Reboot the unit to activate the lithium battery automatically. Enable Auto Activation |
| 42 | Manual Activation for Lithium Battery | Default: Activation Disabled This function is available only for models supporting lithium battery activation. For other models, it is a reserved setting (unavailable). When "LIx" is selected for lithium battery in Program 05 and the battery is not recognized, you can select this option to manually activate the lithium battery at a specific time. |
| 46 | Max Discharge Current Protection | Default OFF: Disable discharge current protection Available only in single-model mode. When mains power is available, the unit switches to mains mode and stops battery discharge if the set discharge current is exceeded. When mains power is unavailable, a warning is displayed, and battery discharge continues even if the set discharge current is exceeded. Range is 20A - 500A. Enable discharge current protection |
IV. Battery Equalization
The charge controller includes an equalization function to counteract negative chemical effects like stratification and sulfate crystal buildup, which can reduce battery capacity. Regular equalization is recommended.
How to Use the Equalization Function:
- Enable the battery equalization function in the LCD settings (Program 33).
- Apply the function either by setting the equalization interval in Program 37 or by activating it immediately in Program 39.
When Equalization Occurs:
The controller enters equalization mode when the set equalization time is reached in float mode or when equalization is activated immediately.
Equalization Charge Time and Timeout:
During the equalization phase, the controller provides maximum power to charge the battery until the battery voltage reaches the set equalization voltage. Then, a constant voltage charge is used to maintain the equalization voltage. The battery remains in the equalization phase until the set equalization time is reached.
If the set equalization time expires before the battery voltage reaches the required level, the controller extends the equalization time. If the battery voltage is still below the set equalization voltage after the extended time, the controller interrupts equalization and returns to float mode.
V. Lithium Battery Settings
Settings for Lithium Battery without Communication
To avoid BMS protection triggering when there is no communication between the BMS and the unit:
- Obtain the battery's BMS specifications, including:
- A. Maximum charging voltage
- B. Maximum charging current
- C. Discharge protection voltage
- Set the battery type to "LIB".
| Program | Battery Type | Settings |
|---|---|---|
| 05 | AGM (Default) | |
| Flooded | ||
| User Defined | If 'User-Defined' is selected, battery charging voltage and low DC cut-off voltage can be set in Programs 26, 27, and 29. | |
| Lithium Ion Battery without communication | If 'LIB' is selected, the default settings are suitable for lithium ion batteries without communication. Battery charging voltage and low DC cut-off voltage can be set in Programs 26, 27, and 29. |
- Set C.V. (charging voltage) to BMS maximum charging voltage minus 0.5V.
| Program | Float Charging Voltage (C.V. Voltage) | Settings |
|---|---|---|
| 26 | Set Float Charging Voltage (C.V. Voltage) to BMS maximum charging voltage minus 0.5V. | If "User Defined" is selected in Program 05, this can be configured. The setting value must be equal to or greater than the value in Program 27. An increment of 0.1V is possible with each click. 12V Model: Default 14.1V, Range 12.0V - 15.5V. 24V Models: Default 28.2V, Range 24.0V - 30.0V. 48V Models: Default 56.4V, Range 48.0V - 62.0V. |
- Set the float charging voltage to be the same as the C.V. voltage.
| Program | Float Charging Voltage | Settings |
|---|---|---|
| 27 | Float Charging Voltage | If "User Defined" is selected in Program 05, this can be configured. 12V Model: Default 13.5V. Range is 12.0V to Program 26 value. 24V Models: Default 27.0V. Range is 24.0V to Program 26 value. 48V Models: Default 54.0V. Range is 48.0V to Program 26 value. |
- Set the low DC cut-off voltage to at least the BMS discharge protection voltage plus 2V.
| Program | Low DC Cut-off Voltage | Settings |
|---|---|---|
| 29 | Low DC Cut-off Voltage | If "User Defined" is selected in Program 05, this can be configured. The setting value must be less than the value in Program 12. An increment of 0.1V is possible with each click. The low DC cut-off voltage is set to the configured value regardless of the connected load. Default Settings and Ranges: 12V Models: Default 10.5V. 24V Models: Default 21.0V. Range 20.0V - 27.0V. 48V Models: Default 42.0V. Range 40.0V - 54.0V. |
- Set the maximum charging rate, which must be less than the maximum charging rate specified by the BMS.
| Program | Maximum Charging Current | Settings |
|---|---|---|
| 02 | Maximum Charging Current: Define the total charging current from solar and mains chargers. Maximum Charging Current = Mains Charging Current + Solar Charging Current. | 60A (Default). If selected, the allowable charging current range is between 1A and the maximum SPEC charging current, but it must not be less than the AC charging current (Program 11). |
| Program | Setting the voltage point for return to mains power when "SBU priority" or "Solar first" is selected in Program 01. | Settings |
|---|---|---|
| 12 | Setting the voltage point for return to mains power when "SBU priority" or "Solar first" is selected in Program 01. | 48V Models: Default 46V. Range 44.0V - 57.2V, but the max setting must be less than the value in Program 13. 24V Models: Default 23V. Range 22.0V - 28.6V, but the max setting must be less than the value in Program 13. 12V Models: Default 11.5V. Range 11.0V - 14.3V, but the max setting must be less than the value in Program 13. |
Notes:
It is best to complete the settings without powering on the inverter (allow the LCD display to show information only, without producing output). Reboot the inverter after completing the settings.
Error Codes
| Error Code | Description | Icon |
|---|---|---|
| 01 | Inverter module overheats | Icon and error number |
| 02 | DCDC module overheats | |
| 03 | Battery voltage is too high | |
| 04 | PV module overheating | |
| 05 | Output short circuit | |
| 06 | Output voltage is too high | |
| 07 | Overload - cutoff time | |
| 08 | Bus voltage is too high | |
| 09 | Bus soft start failure. | |
| 10 | PV current overload | |
| 11 | PV overvoltage | |
| 12 | DCDC current overload | |
| 13 | Current overload or overvoltage | |
| 14 | Bus voltage is too low | |
| 15 | Inverter error | |
| 18 | OP offset current is too large | |
| 19 | Inverter offset current is too large | |
| 20 | DC/DC offset current is too large | |
| 21 | PV offset current is too large | |
| 22 | Output voltage is too low | |
| 23 | Negative inverter power |
Warning Indicator
| Code | Message | Alarm | Display Icon |
|---|---|---|---|
| 02 | Temperature too high | Three beeps every second | Icon |
| 04 | Battery empty | One beep every second | Icon |
| 07 | Overload | Beep every 0.5 seconds | Icon |
| 10 | Output power derating | Two beeps every 3 seconds | Icon |
| 14 | Fan blocked | None | Icon |
| 15 | Low solar energy amount | Two beeps every 3 seconds | Icon |
| 19 | Communication with lithium battery failed | Beep every 0.5 seconds | Icon |
| 21 | Lithium battery output current is too high | None | Icon |
| E9 | Battery equalization | None | Icon |
| bP | Battery not connected | None |
Technical Specifications
Table 1 Line Mode Technical Specifications
| Inverter Model | 1.5KVA | 1.5KVA | 2.5KVA | 3.5KVA | 5.5KVA |
|---|---|---|---|---|---|
| Input Voltage Waveform | Sine wave (mains or generator) | ||||
| Nominal Input Voltage | 230V AC | ||||
| Low Loss Voltage | 170V AC ± 7 V (UPS) / 90V AC ± 7 V (Appliance) | ||||
| Voltage at Low Loss | 180V AC ± 7 V (UPS) / 100V AC ± 7 V (Appliance) | ||||
| Voltage at High Loss | 280V AC ± 7 V | ||||
| Return Voltage at High Loss | 270V AC ± 7 V | ||||
| Max. AC Input Voltage | 300V AC | ||||
| Nominal Input Frequency | 50 Hz / 60 Hz (auto-sensing) | ||||
| Frequency at Low Loss | 40 ± 1 Hz | ||||
| Return Frequency at Low Loss | 42 ± 1 Hz | ||||
| Frequency at High Loss | 65 ± 1 Hz | ||||
| Return Frequency at High Loss | 63 ± 1 Hz | ||||
| Output Short Circuit Protection | Battery Mode: Electronic circuits | ||||
| Efficiency (Line Mode) | >95% (at rated load R, battery fully charged) | ||||
| Switching Time | 10 ms typical (UPS) / 20 ms typical (Appliance) | ||||
| Output Power Limitation | When AC input voltage drops to 95V or 170V (depending on model), output power is limited. | ||||
Table 2 Technical Specifications - Inverter Mode
| Inverter Model | 1.5KVA | 1.5KVA | 2.5KVA | 3.5KVA | 5.5KVA |
|---|---|---|---|---|---|
| Nominal Output Power | 1.5KVA/1.5KW | 2.5KVA/2.5KW | 3.5KVA/3.5KW | 5.5KVA/5.5KW | |
| Output Voltage Waveform | Sine wave | ||||
| Output Voltage Regulation | ± 5%: 230Vac | ||||
| Output Frequency | 50 Hz or 60 Hz | ||||
| Max. Efficiency | 94% | ||||
| Peak Capability | For 5 seconds | ||||
| Nominal DC Input Voltage | 12Vdc | 24Vdc | 48Vdc | ||
| Cold Start Voltage | 11.0Vdc | 23.0Vdc | 46.0Vdc | ||
| DC Warning Voltage Low (AGM/Flooded only) | @ Load < 20%: 11.0Vdc @ 20% ≤ Load < 50%: 10.7Vdc @ Load ≥ 50%: 10.1Vdc |
22.0Vdc 21.4Vdc 20.2Vdc |
40.4Vdc 42.8Vdc 44.0Vdc |
||
| Return Voltage Low DC Warning (AGM/Flooded only) | @ Load < 20%: 11.5Vdc @ 20% ≤ Load < 50%: 11.2Vdc @ Load ≥ 50%: 10.6Vdc |
23.0Vdc 22.4Vdc 21.2Vdc |
42.4Vdc 44.8Vdc 46.0Vdc |
||
| Low DC Cut-off Voltage (AGM/Flooded only) | @ Load < 20%: 10.5Vdc @ 20% ≤ Load < 50%: 10.2Vdc @ Load ≥ 50%: 9.6Vdc |
21.0Vdc 20.4Vdc 19.2Vdc |
42.0Vdc 40.8Vdc 38.4Vdc |
||
Table 3 Technical Specifications - Charging Mode
| Model | 1.5KVA | 1.5KVA | 2.5KVA | 3.5KVA | 5.5KVA | |
|---|---|---|---|---|---|---|
| Max. Charging Current (PV+AC) (@ VI/P=230Vac) | 100 Amperes | 60 Amperes | 100 Amperes | 100 Amperes | 100 Amperes | |
| Max. Charging Current (AC) (@ VI/P=230Vac) | 60 Amperes | |||||
| Bulk Charging Voltage | Flooded Battery: 14.6 Vdc AGM/GEL: 14.1 Vdc |
29.2 VDC 28.2VDC |
58.4VDC 56.4VDC |
|||
| Float Charging Voltage | 13.5 Vdc | 27VDC | 54VDC | |||
| Overcharge Protection | 16.5 Vdc | 32VDC | 63VDC | |||
| Charging Algorithm | 3-stage | |||||
| Charging Curve | See diagram | |||||
| Solar Power Input | Model | 1.5KVA | 1.5KVA | 2.5KVA | 3.5KVA | 5.5KVA |
| Rated Power | 2000W | 2000W | 3000W | 4000W | 5500W | |
| Max PV Array Open Circuit Voltage | 500 Vdc | |||||
| PV Field MPPT Voltage Range | 30Vdc - 500 Vdc | 60Vdc - 500 Vdc | ||||
| Max Input Current | 15A | 15A | 15A | 15A | 18A | |
| Max PV Charging Current | 100A | 60A | 100A | 100A | 100A | |
Table 4 Environmental Specifications
| Model | 1.5KVA | 2.5KVA | 3.5KVA | 5.5KVA |
|---|---|---|---|---|
| Operating Temperature Range | −10°C to 55°C | |||
| Storage Temperature | −15°C to 60°C | |||
| Humidity | 5-95% (non-condensing) | |||
Troubleshooting
| Problem | LCD/LED/Buzzer | Possible Cause | Solution |
|---|---|---|---|
| Unit automatically shuts down during startup. | LCD/LED display and buzzer active for 3 seconds, then turn off completely. | Battery voltage is too low. | Charge the battery. Replace the battery. |
| No response after turning on power. | None | Battery voltage is too low. Battery polarity is reversed. | Check battery and wiring connections. Charge the battery. Replace the battery pack. |
| Power is available, but the unit operates in battery mode. | Input voltage displayed as 0 on LCD, green LED blinking. | Protection against excessive current or input voltage is activated. | Ensure the AC switch is off and AC wiring is correct. |
| Green LED blinking. | Poor AC power quality (from mains or generator). | Check if the AC cable is too thin or too long. Check generator operation or input voltage range settings (UPS → Appliance). | |
| Green LED blinking. | Set "Solar First" as output source priority. | Change output source priority to "Utility first". | |
| When the unit is turned on, the internal relay repeatedly clicks on and off. | LCD and LEDs blinking. | Battery is disconnected. | Check if battery cables are connected correctly. |
| Buzzer beeps continuously and red LED is on. | Error Code 07 | Overload error. The inverter is overloaded by 110% and the time has expired. | Reduce the load by turning off some appliances. |
| Error Code 05 | Output short circuit. | Check wiring and remove abnormal load. | |
| Error Code 02 | Internal temperature of inverter components exceeds 100°C. | Check if the unit's airflow is blocked or if the ambient temperature is too high. | |
| Error Code 03 | Battery is overcharged. | Contact the service center. | |
| Battery voltage is too high. | Check if battery specification and quantity meet requirements. | ||
| Error Code 06/22 | Incorrect output (inverter voltage below 190 Vac or above 260 Vac). | Reduce load. Contact the service center. | |
| Error Code 08/09/15 | Internal components have failed. | Contact the service center. | |
| Error Code 13 | Current overload or overvoltage. | Restart the unit. If the error persists, contact the service center. | |
| Error Code 14 | Bus voltage is too low. | ||
| Other error codes | If cables are connected correctly, contact the service center. |
Maintenance
- Keep the unit clean using a soft, dry cloth to remove dust and dirt. Do not use chemicals.
- Regularly inspect power cords and terminals for damage such as wear, cracks, or loose connections.
- Ensure ventilation openings are clean and unobstructed for adequate cooling.
- Avoid contact with water or other liquids to prevent electrical damage.
Disposal
This product is subject to regulations for the disposal of electrical and electronic equipment (WEEE). Dispose of it at an electrical waste collection point that provides safe recycling according to GPSR standards. Check for the nearest collection points. Contact the manufacturer or an authorized service center for disposal inquiries.
Warranty and Service Information
The product comes with a 24-month manufacturer's warranty from the date of purchase, covering material and manufacturing defects. Contact our service department for any issues to ensure prompt and professional service. The warranty does not cover damage resulting from misuse, drops, mechanical damage, unauthorized repairs, or attempts at disassembly.
