LVTOPSUN Hybrid Solar Inverter LVTS-4KW-HYD

4kW LVTOPSUN Hybrid Solar Inverter LVTS-4KW-HYD | Smart Enterprise

The LVTOPSUN 4kW hybrid solar inverter is designed for residential solar energy storage systems that combine photovoltaic panels, battery storage, and grid electricity. The LVTOPSUN LVTS-4KW-HYD brings together solar power conversion, battery charging and discharging control, grid input, and emergency power supply (EPS) output in one inverter platform.

With a nominal AC output power of 4000W and a maximum PV input power of 4400W, this hybrid inverter is an option for homeowners and solar installers evaluating equipment for a solar-plus-battery installation. It supports lithium-ion and lead-acid batteries, has a nominal battery voltage of 24V, and includes CAN and RS485 battery communication interfaces.

The LVTS-4KW-HYD also features a pure sine wave output, a stated transfer time of 4 milliseconds, LCD and LED indicators, APP monitoring, and Wi-Fi connectivity. Its parallel capability supports up to nine units according to the supplied specifications, providing an option for appropriately designed systems requiring expansion.

When selecting a hybrid inverter, it is important to consider more than the nominal power rating. Solar panel voltage and current, battery chemistry, battery capacity, charging requirements, household loads, grid conditions, and backup power needs all influence the suitability of a particular model. The LVTOPSUN LVTS-4KW-HYD provides a defined set of electrical specifications to support that evaluation.

Key Features of the LVTOPSUN LVTS-4KW-HYD

• 4kW nominal output power: Provides a rated AC output power of 4000W for compatible electrical loads within the inverter’s operating limits.
• 4400W maximum PV input power: Specifies the maximum photovoltaic input power stated for the inverter.
• Single MPPT: Includes one maximum power point tracking input for managing the operating point of the connected solar array.
• 24V battery system: Supports a nominal battery voltage of 24V, with a stated battery voltage range of 20–30V.
• Lithium-ion and lead-acid battery support: Offers two stated battery chemistry options, subject to compatibility with the selected battery.
• EPS backup output: Provides an emergency power supply output for appropriately configured backup applications.
• Pure sine wave output: Specifies the output voltage waveform.
• 4ms transfer time: Provides a stated transfer time of 4 milliseconds.
• LCD, LED and APP monitoring: Offers multiple monitoring and display options.
• CAN and RS485 communication: Supports communication with compatible batteries and other equipment.
• Parallel capability for up to nine units: Provides a stated parallel expansion capability, subject to the manufacturer’s system configuration requirements.
• Built-in protection functions: The supplied specifications list AC short-circuit, AC surge, DC surge, and overload protection.

Product Specifications

General Information

• Brand: LVTOPSUN
• Model: LVTS-4KW-HYD
• Product Type: Hybrid solar inverter
• Nominal Output Power: 4000W
• Peak Apparent AC Power: 8000VA
• Maximum PV Input Power: 4400W
• Number of MPPTs: 1
• Parallel Capability: Up to 9 units
• Number of AC Outputs: 2

Solar Input Specifications

• Maximum Input Voltage: 500V
• Start-up Voltage: 90V
• MPPT Voltage Range: 60–450V in the detailed technical specifications; a separate product overview states 60–500V. Confirm the correct operating range with the manufacturer.
• Maximum Input Current per MPPT: 18A
• Maximum Short-Circuit Current per MPPT: 23A
• MPPT Efficiency: ≥99.9%

AC Input Specifications

• Nominal Input Voltage: 230Vac, L/N/PE
• Input Voltage Range: 90–280Vac (APL); 170–265Vac (UPS)
• AC Frequency Range: 40–65Hz
• Frequency: Automatic 50/60Hz sensing

Battery Specifications

• Supported Battery Types: Lithium-ion and lead-acid
• Nominal Battery Voltage: 24V
• Battery Voltage Range: 20–30V
• Maximum Discharge Current: 137A
• Maximum Charge/Discharge Power: 3300W
• Maximum Solar Charge Current: 120A
• Maximum AC Charge Current: 100A
• Maximum Combined PV and AC Charge Current: 120A
• Lithium-ion Battery Activation: Yes, as specified
• Lithium-ion Battery Communication: CAN / RS485

AC Output Specifications

• Nominal Output Power: 4000W
• Peak Apparent AC Power: 8000VA
• Nominal AC Voltage: 230V
• Nominal Grid Frequency: 50/60Hz
• Output Waveform: Pure sine wave
• Transfer Time: 4ms
• Total Harmonic Distortion at Linear Load (THDv): Less than 3%

Efficiency and Protection

• Peak Efficiency: 94%
• MPPT Efficiency: ≥99.9%
• AC Short-Circuit Protection: Yes
• AC Surge Protection: Yes
• DC Surge Protection: Yes
• Overload Protection: Yes

Physical and Environmental Specifications

• Dimensions (W × H × D): 290 × 424 × 120mm
• Weight: 7.1kg
• Cooling Method: Fan cooling
• Operating Temperature Range: -10°C to 60°C
• Ingress Protection Rating: IP20
• Noise Emission: ≤50dB
• Specified Altitude: 2000m
• Relative Humidity: 5–95%, non-condensing

Communication and Monitoring

• Communication Interfaces: RS485 / USB / CAN / Wi-Fi
• Display and Monitoring: LCD / LED / APP

Hybrid Solar Inverter Operation

A hybrid solar inverter coordinates the conversion of electricity from solar panels and its interaction with a battery and the electrical grid. In a solar-plus-storage installation, the inverter’s operating modes and configuration determine how available solar energy, stored energy, and grid electricity are managed.

The LVTOPSUN LVTS-4KW-HYD supports photovoltaic input, battery charging and discharging control, grid interaction, and EPS backup output. These functions make it relevant to residential installations designed to use solar generation alongside battery storage.

The actual operating behaviour depends on the installation design, settings, connected equipment, and the manufacturer’s configuration instructions. The product description does not specify a particular self-consumption algorithm, time-of-use scheduling function, or export-control capability, so these features should be confirmed separately if required.

Solar Input and MPPT Performance

The inverter has a stated maximum PV input power of 4400W and one MPPT. Maximum power point tracking helps a solar system operate the connected photovoltaic array at an appropriate voltage and current operating point as conditions change.

The supplied detailed specifications list a maximum input voltage of 500V, a start-up voltage of 90V, and an MPPT operating range of 60–450V. However, the product overview also states an MPPT range of 60–500V. This discrepancy should be resolved against the manufacturer’s official datasheet before the product is installed or the specifications are published as final.

The maximum input current is listed as 18A per MPPT, with a maximum short-circuit current of 23A per MPPT. Solar installers must check the proposed array’s operating current, short-circuit current, string voltage, and cold-weather open-circuit voltage against all applicable inverter limits.

Flexible Battery Compatibility

The LVTS-4KW-HYD supports lithium-ion and lead-acid batteries, with a nominal battery voltage of 24V and a stated operating voltage range of 20–30V. The specifications also list lithium-ion battery activation and CAN/RS485 communication.

Battery selection must account for the inverter’s voltage requirements, the battery’s permitted charge and discharge currents, the battery management system where applicable, and the manufacturer’s compatibility instructions. Communication support alone does not establish compatibility with every battery brand or model.

The maximum stated discharge current is 137A, while the maximum charge/discharge power is 3300W. These are distinct electrical limits and should be considered alongside the battery’s own specifications. The nominal 4kW AC output rating should not be interpreted as proof that the inverter can supply 4kW continuously from every compatible battery under all operating conditions.

EPS Backup Power and Output Quality

The LVTOPSUN LVTS-4KW-HYD includes an EPS output for appropriately configured backup applications. The supplied specifications identify a pure sine wave output and a transfer time of 4ms.

The nominal AC output power is 4000W, with a listed peak apparent AC power of 8000VA. These ratings describe different aspects of output capability and should not be treated as interchangeable. The connected loads must remain within the manufacturer’s applicable continuous, peak, and other operating limits.

The stated THDv at linear load is less than 3%. This is a specified electrical characteristic under the stated load condition, not a guarantee of identical performance under every load type.

Backup runtime depends on the connected battery’s usable energy, the power drawn by the loads, system losses, and the permitted operating limits. The product specifications do not establish a fixed backup duration for a particular household.

Monitoring, Communication and System Expansion

The inverter supports LCD and LED display options alongside APP monitoring. Its listed communication interfaces include RS485, USB, CAN, and Wi-Fi.

These interfaces can be useful for monitoring, configuration, or communication with compatible equipment. Specific monitoring features and supported applications should be confirmed with the supplier because the supplied information does not identify the app name, supported operating systems, cloud service requirements, or remote-monitoring subscription arrangements.

The stated parallel capability is up to nine units. Parallel operation requires compatible equipment, approved wiring, correct configuration, and compliance with the manufacturer’s installation instructions. The nine-unit figure should not be interpreted as confirmation that every configuration will automatically achieve a particular combined output rating.

Applications and Buying Considerations

The LVTOPSUN 4kW hybrid solar inverter may be considered for residential solar-plus-battery installations where its electrical specifications and operating limits match the system design.

Potential applications include:

• Residential solar storage: For installations combining photovoltaic panels and compatible battery storage.
• Solar self-consumption systems: For projects designed to use solar generation alongside stored energy and grid electricity.
• Backup power systems: For installations using the EPS output with appropriately selected loads and batteries.
• Battery-based solar projects: For users comparing lithium-ion and lead-acid battery support.
• Expandable inverter systems: For system designers evaluating the stated parallel capability.

These are potential application categories rather than guarantees of compatibility with every household or installation. Before purchasing, confirm the connected loads, battery requirements, solar array configuration, grid input conditions, and local electrical installation requirements.

Installation, Care and Maintenance

The inverter has an IP20 ingress protection rating, fan cooling, and a stated operating temperature range of -10°C to 60°C. These specifications should be considered when selecting its installation location.

IP20 does not establish protection against water ingress. Do not assume that the inverter is suitable for an exposed outdoor location. Follow the manufacturer’s installation instructions for placement, ventilation, clearances, environmental conditions, and electrical connections.

Important installation considerations include:

• Confirm the solar array voltage and current limits before connecting PV strings.
• Verify battery voltage, charging limits, and communication compatibility.
• Ensure that the inverter and battery are installed according to their respective manuals.
• Provide the ventilation and clearances required for fan cooling.
• Follow the manufacturer’s instructions for AC input, AC output, grounding, and EPS connections.
• Use a qualified solar installer for commissioning, maintenance, and electrical troubleshooting.

Frequently Asked Questions

1. What is the rated output power of the LVTOPSUN LVTS-4KW-HYD?

Its stated nominal AC output power is 4000W, or 4kW.

2. What is the maximum solar PV input power?

The stated maximum PV input power is 4400W.

3. Which batteries are supported?

The supplied specifications list lithium-ion and lead-acid batteries with a nominal voltage of 24V and a stated voltage range of 20–30V. Confirm the compatibility of the specific battery model before purchase.

4. Does the inverter support backup power?

Yes. The product specifications identify an EPS backup output and a stated transfer time of 4ms. Actual backup performance depends on system configuration and connected loads.

5. What is the maximum PV input voltage?

The stated maximum input voltage is 500V. The detailed MPPT voltage range conflicts with the overview, so confirm the official MPPT operating range before installation.

6. How efficient is this hybrid inverter?

The stated peak efficiency is 94%, and the MPPT efficiency is at least 99.9%. These are separate efficiency specifications.

7. Can multiple LVTS-4KW-HYD units operate in parallel?

The supplied specifications state a parallel capability of up to nine units. Confirm the manufacturer’s approved configuration and installation requirements.

8. Does the inverter support Wi-Fi monitoring?

Yes. Wi-Fi is listed among the communication interfaces, and APP monitoring is specified. Details of the supported application should be confirmed with the supplier.

9. Is the inverter waterproof?

The stated ingress protection rating is IP20, which does not establish protection against water ingress. Follow the manufacturer’s instructions for selecting a suitable installation location.

10. What are the inverter’s dimensions and weight?

The stated dimensions are 290 × 424 × 120mm, and the listed weight is 7.1kg.

Choose the LVTOPSUN LVTS-4KW-HYD for Your Solar Storage Project

The LVTOPSUN 4kW Hybrid Solar Inverter LVTS-4KW-HYD combines a 4000W nominal AC output rating, 4400W maximum PV input power, 24V battery support, EPS backup output, multiple communication interfaces, and stated parallel capability for up to nine units. Its detailed electrical and physical specifications help buyers and solar installers assess whether it matches their planned installation.

Before purchasing, verify battery compatibility, PV string requirements, backup-load needs, and the manufacturer’s installation instructions. In particular, resolve the conflicting MPPT voltage-range information against the official datasheet to ensure accurate product documentation and safe system design.

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