Deye String Inverter Three Phase 15kW

The Deye 15kW three phase string inverter SUN-15K-G05-AU is a high-performance PV inverter designed for commercial and large residential solar installations requiring efficient energy conversion, flexible system design and reliable operation.

Featuring a three-phase output configuration, this inverter delivers 15kW rated AC power and supports up to 22.5kW maximum PV input power, allowing installers to optimise solar array capacity for different project requirements.

The SUN-15K-G05-AU is equipped with two MPPT trackers and two strings, providing flexible PV system configuration while improving energy harvesting when solar panels are installed across different orientations or operating conditions.

With a maximum efficiency of 98.5% and MPPT efficiency above 99%, this Deye three phase solar inverter helps minimise conversion losses and maximise usable solar energy output.

Designed for modern PV applications, the inverter supports zero export applications, VSG applications, optional string intelligent monitoring and optional Anti-PID functionality. Its IP65-rated enclosure, natural cooling system and wide operating temperature range make it suitable for reliable outdoor installation.

With integrated protection functions, multiple communication options and a 10-year warranty, the SUN-15K-G05-AU provides a dependable solution for professional solar installers, EPC contractors and commercial energy projects.

Key Features of DEYE String Inverter Three Phase 15kW

High PV Input Capacity for Commercial Solar Applications

The SUN-15K-G05-AU supports a maximum PV input power of 22.5kW, allowing the inverter to connect with a larger solar array while maintaining efficient operation.

Key PV input specifications include:

• Maximum PV input voltage: 1000V
• MPPT operating range: 200V–850V
• Start-up PV input voltage: 250V
• Maximum PV input current: 13A + 26A
• Maximum short circuit current: 19.5A + 39A

This wide input capability provides flexibility when designing different PV configurations.

Dual MPPT Tracking Design

The inverter features:

• 2 MPPT trackers
• 1+2 strings per MPPT

The independent MPPT design enables better solar energy tracking across different panel arrangements, helping installers optimise system performance where PV arrays may experience different conditions.

High Conversion Efficiency

The SUN-15K-G05-AU achieves:

• Maximum efficiency: 98.5%
• Euro efficiency: 97.5%
• MPPT efficiency: >99%

The high efficiency design reduces energy losses during DC to AC conversion, helping improve overall solar system performance.

Three Phase Grid Connection

Designed for three-phase applications, the inverter provides:

• Rated output power: 15kW
• Maximum AC output current: 21.7A
• Rated grid voltage: 3L/N/PE 380V / 400V
• Frequency: 50Hz / 60Hz optional

This makes the inverter suitable for commercial and larger-scale PV installations requiring three-phase electrical integration.

Zero Export & VSG Application Support

The inverter supports:

• Zero export applications
• VSG applications

These functions provide additional flexibility for different energy management requirements.

Optional Smart Monitoring Functions

The SUN-15K-G05-AU supports optional string intelligent monitoring.

This allows installers and operators to gain improved visibility into PV system operation and monitor individual string performance when required.

Optional Anti-PID Function

The inverter supports an optional Anti-PID function, providing an additional solution for PV systems requiring this functionality.

Robust Outdoor Design

The inverter is designed for outdoor environments with:

• IP65 protection rating
• Natural cooling system
• Operating temperature: -25°C to +65°C
• Humidity range: 0–100%
• Maximum altitude: 4000m without derating

This design supports stable operation across a wide range of installation environments.

Integrated Safety Protection

The SUN-15K-G05-AU includes multiple protection functions:

• DC reverse polarity protection
• AC short circuit protection
• AC output overcurrent protection
• Output overvoltage protection
• Insulation resistance protection
• Ground fault monitoring
• Anti-islanding protection
• Temperature protection
• Active frequency shift

The inverter also includes:

• DC Type II surge protection
• AC Type II surge protection

These built-in protections improve system safety and operational reliability.

Main Benefits

For Solar Installers & EPC Contractors

The Deye 15kW three phase string inverter provides installers with a flexible solution for commercial solar projects requiring high PV input capability and reliable operation.

The dual MPPT design simplifies system planning by allowing different PV configurations while maintaining efficient energy tracking.

Its compact design, natural cooling and IP65 protection help reduce installation complexity and maintenance requirements.

For Solar System Designers

Engineers benefit from the inverter’s combination of high efficiency, flexible voltage range and advanced application support.

The ability to handle up to 22.5kW PV input power provides additional design flexibility when sizing solar arrays.

Communication options including RS485, RS232, WiFi and LAN allow integration with monitoring systems and remote management solutions.

For Commercial Solar Users

For businesses requiring reliable renewable energy generation, the inverter provides efficient three-phase power conversion with a maximum efficiency of 98.5%.

The wide operating temperature range and protection features support stable operation in different environmental conditions.

For Solar Distributors

The SUN-15K-G05-AU offers distributors a professional-grade inverter solution for commercial and industrial solar applications.

Its combination of high efficiency, flexible installation options and recognised safety standards makes it suitable for a wide range of PV projects.

Installation

The installation of the DEYE SUN-15K-G05-AU should be completed by qualified solar professionals following electrical requirements and manufacturer instructions.

1. Select Installation Location

Choose a suitable mounting location with sufficient ventilation and protection.

Installation requirements:

• Ambient temperature: -25°C to +65°C
• Humidity: 0–100%
• Maximum altitude: 4000m

Ensure enough space is available around the inverter for operation and maintenance.

2. Mount the Inverter

Secure the inverter on a suitable wall or mounting structure.

The inverter dimensions are:

332W × 472H × 203D mm

Weight:

15kg

Ensure the mounting surface can safely support the inverter.

3. Connect PV Inputs

Connect the solar strings to the DC input terminals.

The inverter supports:

• Maximum PV voltage: 1000V
• 2 MPPT trackers
• Multiple PV strings

Check polarity carefully before commissioning.

4. Connect Three Phase AC Output

Connect the inverter to the three-phase grid connection.

Specifications:

• Three phase output
• 380V / 400V grid voltage
• 50Hz / 60Hz frequency

Ensure all AC connections comply with applicable electrical requirements.

5. Connect Communication Interfaces

The inverter supports:

• RS485
• RS232
• WiFi
• LAN

These interfaces allow connection to monitoring systems.

6. Commission the System

Before operation:

1. Verify all DC and AC connections.
2. Check safety protection settings.
3. Activate the inverter.
4. Confirm LCD1602 display operation.
5. Verify normal PV generation.

After successful commissioning, the inverter will begin converting solar energy into usable AC electricity.

Deye

Deye is a manufacturer specialising in renewable energy solutions, including photovoltaic inverters and energy storage technologies.

The company develops solar solutions designed for residential, commercial and industrial applications, focusing on efficient energy conversion, intelligent management and reliable system operation.

Through its inverter product range, Deye provides solutions supporting modern solar energy systems worldwide.