Deye 18kW Single-Phase Hybrid Inverter

Deye 18kW Single-Phase Hybrid Inverter

The Deye 18kW Single-Phase Hybrid Inverter is a high-capacity solar energy management solution designed for larger residential properties, farms, guesthouses, offices and commercial installations. It combines solar panel input, low-voltage lithium battery storage, grid power and diesel generator support in one advanced hybrid inverter.

With a rated AC input and output power of 18000W, a maximum solar panel input of 28800W and a maximum battery charging and discharging current of up to 380A, this Deye inverter is suitable for properties with higher electricity requirements and larger backup power demands.

Main Benefit

The main advantage of the Deye 18kW Hybrid Inverter is its ability to manage multiple energy sources intelligently. The inverter can draw power from solar panels, lithium batteries, the grid and a compatible diesel generator to maintain reliable electricity supply while reducing grid dependence.

The inverter is suitable for customers who need stronger backup performance than a standard residential inverter can provide. Its high solar input capacity, substantial battery current and expandable design make it suitable for larger solar systems that require reliable performance during load shedding and grid interruptions.

Hybrid Inverter Technology

The Deye 18kW Single-Phase Hybrid Inverter supports both on-grid and off-grid operation. During normal operation, the inverter can use solar energy to supply connected loads, charge the battery bank and reduce grid electricity usage. During a power interruption, the inverter can continue supplying backup loads from the available solar panels and battery storage.

The inverter also supports AC coupling, allowing it to be integrated into certain existing solar installations. This makes it a practical option for customers who want to upgrade an existing grid-tied solar system by adding battery storage and backup power functionality.

Benefits

• High 18kW single-phase hybrid inverter output.
• Suitable for on-grid and off-grid solar operation.
• Maximum PV input power of up to 28800W.
• Maximum PV access power of up to 36000W.
• Three independent MPPT trackers.
• Supports up to 6 solar panel strings.
• Compatible with suitable low-voltage lithium-ion and lead-acid batteries.
• Maximum battery charging and discharging current of up to 380A.
• Two battery inputs for improved battery bank integration.
• Supports energy storage from a diesel generator.
• AC coupling support for compatible existing solar systems.
• Six configurable battery charging and discharging time periods.
• Parallel operation with up to 16 compatible inverter units.
• Colour touch LCD display.
• IP65-rated enclosure.

Solar Panel Compatibility

The Deye 18kW Hybrid Inverter supports a maximum solar panel input power of up to 28800W and a maximum PV access power of up to 36000W. This allows customers to install a substantial solar array for improved daytime energy production and battery charging.

The inverter includes 3 independent MPPT trackers with support for up to 6 solar panel strings. Its MPPT operating voltage range is 150V to 425V, while the maximum PV input voltage is 500V. The PV start-up voltage is 125V.

Correct solar panel string sizing remains important. The number of panels connected to each string must be calculated according to the panel voltage, current, inverter MPPT limits and expected operating conditions.

Battery Compatibility

The Deye 18kW Single-Phase Hybrid Inverter supports suitable lithium-ion and lead-acid batteries operating between 40V and 60V. When connected to a compatible lithium battery, the inverter can automatically adapt its charging strategy through Battery Management System communication.

The inverter supports a maximum battery charging current of up to 380A and a maximum battery discharging current of up to 380A. Two battery inputs are provided, making the inverter suitable for larger low-voltage battery banks.

A properly sized battery bank is important for an inverter of this capacity. Battery selection should be based on the required backup time, expected electrical loads and the discharge limits of the selected battery system.

Generator Integration

The Deye 18kW Hybrid Inverter supports energy storage from a compatible diesel generator. This allows the generator to assist with battery charging when solar production is insufficient or during extended grid failures.

Generator integration is especially useful for farms, lodges, remote properties and businesses that need additional backup power during poor weather or prolonged electricity interruptions.

AC Coupling for Existing Solar Systems

The Deye 18kW Hybrid Inverter supports AC coupling for compatible existing solar systems. This allows certain existing grid-tied solar installations to be upgraded with battery storage and backup power functionality without replacing the entire solar system.

AC-coupled system design requires professional planning to ensure that the existing inverter, Deye hybrid inverter, battery bank and electrical protection equipment operate correctly together.

Load Management and Time-of-Use Control

The inverter supports 6 configurable charging and discharging time periods. This allows customers to manage how the battery bank is charged and used during different times of the day.

Time-of-use configuration can help reduce electricity costs by charging batteries when grid electricity is available and using stored energy during peak periods or load shedding.

Parallel Expansion

The Deye 18kW Single-Phase Hybrid Inverter supports parallel operation with up to 16 compatible inverter units for larger on-grid and off-grid installations. It also supports the parallel connection of multiple compatible batteries.

Parallel inverter systems require professional design, suitable battery capacity, correctly sized cabling, protection equipment and proper commissioning.

Monitoring and Communication

The Deye 18kW Hybrid Inverter includes a colour touch LCD display for convenient local monitoring and configuration. The inverter supports RS485, RS232 and CAN communication interfaces.

Optional remote monitoring options include GPRS, WiFi, Bluetooth, 4G and LAN connectivity. The available monitoring method depends on the selected communication accessory and system configuration.

Performance

The Deye 18kW Hybrid Inverter provides a maximum efficiency of up to 97.6%, a Euro efficiency of up to 96.5% and an MPPT efficiency above 99%.

For off-grid operation, the inverter supports peak power of up to twice its rated output for 10 seconds. This helps accommodate the temporary start-up current required by certain appliances, pumps and electrical equipment.

The inverter also supports a maximum continuous AC passthrough current of up to 200A from the grid to the connected loads.

Applications

• Larger residential solar installations.
• Load shedding backup systems.
• Commercial solar installations.
• Office buildings and small businesses.
• Farms and agricultural properties.
• Guesthouses and lodges.
• Remote properties with generator backup.
• Grid-connected hybrid solar systems.
• Off-grid solar systems.
• Existing grid-tied solar system upgrades.
• High-capacity battery backup installations.
• Expandable parallel inverter systems.

Technical Specifications

• Brand: Deye
• Model: SUN-18K-SG01LP1-EU-AM3-P
• Product Type: Hybrid Solar Inverter
• Phase: Single Phase
• Rated AC Input and Output Active Power: 18000W
• Maximum AC Input and Output Apparent Power: 19800VA
• Rated AC Input and Output Current: 81.9A / 78.3A
• Maximum AC Input and Output Current: 90A / 86.1A
• Maximum Continuous AC Passthrough Current: 200A
• Off-Grid Peak Power: Up to Two Times Rated Power for 10 Seconds
• Rated Input and Output Voltage: 220V / 230V
• Rated Input and Output Frequency: 50Hz or 60Hz
• Grid Connection Form: L + N + PE
• Power Factor Adjustment Range: 0.8 Leading to 0.8 Lagging
• Total Current Harmonic Distortion: Less Than 3%
• Maximum PV Access Power: 36000W
• Maximum PV Input Power: 28800W
• Maximum PV Input Voltage: 500V
• PV Start-Up Voltage: 125V
• MPPT Voltage Range: 150V to 425V
• Rated PV Input Voltage: 370V
• Number of MPPT Trackers: 3
• Solar Strings Per MPPT Tracker: 2 + 2 + 2
• Maximum PV Input Current: 36A + 36A + 36A
• Maximum PV Short-Circuit Current: 54A + 54A + 54A
• Compatible Battery Types: Lithium-Ion and Lead-Acid
• Battery Voltage Range: 40V to 60V
• Maximum Battery Charging Current: 380A
• Maximum Battery Discharging Current: 380A
• Number of Battery Inputs: 2
• Lithium Battery Charging Strategy: Automatic Adaptation Through Battery Management System Communication
• Maximum Efficiency: 97.6%
• Euro Efficiency: 96.5%
• MPPT Efficiency: Greater Than 99%
• Communication Interfaces: RS485, RS232 and CAN
• Optional Monitoring: GPRS, WiFi, Bluetooth, 4G or LAN
• Display: Colour Touch LCD
• Protection Rating: IP65
• Cooling Type: Intelligent Air Cooling
• Operating Temperature: -40°C to +60°C with Derating Above 45°C
• Humidity Range: 0% to 100%
• Maximum Operating Altitude: 3000m
• Noise Level: Less Than 55dB
• Dimensions: 464mm x 863mm x 282mm Excluding Connectors and Brackets
• Weight: 59.8kg
• Grid Regulation: IEC 61727, IEC 62116, AS 4777.2 and NRS 097
• Safety Standards: IEC/EN 61000-6-1/2/3/4 and IEC/EN 62109-1/-2

Protection Features

• DC reverse polarity protection.
• AC output overcurrent protection.
• Thermal protection.
• AC output overvoltage protection.
• AC output short-circuit protection.
• DC component monitoring.
• Optional arc fault circuit interrupter.
• Anti-islanding protection.
• DC switch.
• Insulation impedance detection.
• Residual current detection.
• Type II DC surge protection.
• Type II AC surge protection.

Warranty

The Deye 18kW Single-Phase Hybrid Inverter includes a warranty period of 5 years or 10 years, depending on the final installation site and the applicable warranty policy.

Correct installation, inverter configuration, battery compatibility, solar panel string sizing and electrical protection remain important for long-term performance. The inverter should be installed and commissioned by a suitably qualified installer.

Why Buy From JC Solar Panels

JC Solar Panels supplies reliable solar equipment for residential, commercial, agricultural and off-grid installations across South Africa. Our team can assist with selecting a suitable inverter, lithium battery bank, solar panel array and electrical protection equipment based on your energy requirements.

When installing the Deye 18kW Single-Phase Hybrid Inverter, correct system sizing is essential. JC Solar Panels can assist with complete solar system planning, equipment supply and professional installation solutions.