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| Type | Hybrid Inverter |
| Style | 3-phase inverter |
| Manufacturing number | DEYE-SUN-125K-SG02HP3-EU-GM10 |
| Extra heavy | Yes |
The DEYE SUN-125K-SG02HP3-EU-GM10 is an exceptionally powerful 125 kW three-phase high-voltage hybrid inverter, engineered for advanced commercial solar PV and energy-storage installations requiring high power, intelligent energy management, battery integration and reliable backup capability.
Combining a solar inverter, battery inverter and sophisticated energy-management platform in one unit, the SUN-125K-SG02HP3-EU-GM10 can intelligently manage PV generation, high-voltage lithium battery storage, the utility grid, backup loads, AC-coupled generation and generator input.
With 10 independent MPPT trackers and support for up to 20 PV strings, a maximum PV access capacity of 250 kW, maximum PV input power of 200 kW, two high-voltage battery inputs, 125 kW rated AC power and up to 250 A continuous AC passthrough from grid to load, this inverter is designed for demanding, large-scale energy applications.
At the heart of the SUN-125K-SG02HP3-EU-GM10 is a highly efficient three-phase conversion platform delivering a maximum efficiency of 98.7%, Euro efficiency of 98.1% and MPPT efficiency above 99%.
The inverter provides 125,000 W rated AC input/output active power with a maximum AC apparent power of 135,000 VA.
For demanding off-grid applications, Deye specifies a peak output capability of up to 1.5 times rated power for 10 seconds, providing additional capacity for equipment and loads with temporarily high starting power requirements.
One of the major advantages of the GM10 architecture is its extremely flexible photovoltaic input configuration.
The SUN-125K-SG02HP3-EU-GM10 provides:
The large number of independent MPPT channels provides significant design flexibility for commercial PV installations where arrays may have different orientations, inclinations or operating conditions.
The inverter's advanced settings also include an MPPT Scan function. When enabled, the system can periodically perform I-V curve scanning to relocate the maximum power point and help optimize production where partial shading affects conventional MPPT tracking.
The SUN-125K-SG02HP3-EU-GM10 is designed specifically for high-voltage lithium-ion battery systems, making it suitable for high-capacity commercial energy storage.
Key battery characteristics include:
The two battery interfaces provide considerable flexibility for high-capacity storage architectures, subject to Deye's approved battery requirements and the correct BMS configuration.
The SUN-125K-SG02HP3-EU-GM10 provides advanced programmable battery management with six configurable time periods for battery charging and discharging.
Depending on the selected configuration, the Time-of-Use functionality can be used to:
This gives system designers and operators precise control over how stored energy is used throughout the day.
The SUN-125K-SG02HP3-EU-GM10 supports several energy-management strategies, allowing it to adapt to different installation requirements.
Solar generation can supply connected loads, charge the battery and, where permitted by local grid regulations and system configuration, export surplus electricity to the grid.
The inverter can operate without an active utility connection and supply supported backup loads from PV and battery storage.
Critical loads can be connected to the dedicated LOAD port, allowing the hybrid inverter to form part of a high-capacity backup-power system.
The inverter can limit its output to the connected backup loads and battery charging, without intentionally supplying external home loads or exporting energy to the grid.
Using external CTs or a compatible smart meter, the hybrid inverter can supply both backup loads and other on-site loads while controlling the power flow at the grid connection point.
Where permitted, surplus energy can be exported to the utility grid. When the appropriate Time-of-Use settings are enabled, battery energy can also participate in the configured energy-management strategy.
These modes make the inverter suitable for everything from self-consumption and zero-export installations to sophisticated commercial energy-management systems.
The SUN-125K-SG02HP3-EU-GM10 supports AC coupling, allowing compatible existing grid-connected PV installations to be integrated into a hybrid battery-storage architecture. Deye specifically identifies AC coupling as a feature for retrofitting existing solar systems.
The user manual describes AC coupling on the Grid side or Load side, as well as configurations where an external grid-following inverter can be integrated through the multifunctional connection.
This makes the SUN-125K-SG02HP3-EU-GM10 particularly attractive for commercial sites that already have a sizeable solar installation but now want to add battery storage and more advanced energy management.
For installations requiring an additional energy source, the inverter provides extensive support for diesel or compatible AC generator integration.
The generator can be used to supply the system and charge the connected battery storage.
A dedicated G-Start dry contact can provide a remote generator start signal, allowing generator operation to be coordinated with the battery system.
Available generator-management functions described by Deye include:
Generator peak shaving allows battery and inverter power to supplement the generator, helping keep the generator's output within a predefined power limit.
The inverter's GEN connection is a multifunctional interface rather than simply a generator input.
Depending on system configuration, it can be used as:
When configured as a Smart Load output, the inverter can control selected loads according to battery SOC or voltage conditions.
This can be particularly useful for controllable non-critical loads that should operate primarily when sufficient stored or renewable energy is available.
For extremely high-power applications, Deye specifies support for up to 10 compatible inverters operating in parallel in both on-grid and off-grid configurations.
This makes the 125 kW model particularly interesting for scalable projects. A ten-unit installation can provide a very substantial inverter platform, although system engineering must always follow Deye's official parallel-system requirements.
The user manual specifies that in a parallel system:
Deye specifies 100% unbalanced output for this inverter series.
This is particularly useful in large three-phase installations where loads are not distributed equally between L1, L2 and L3.
The manual additionally provides an Asymmetric Phase Feeding function for applicable operating configurations.
Despite its increased 125 kW inverter power, the SUN-125K-SG02HP3-EU-GM10 retains a substantial 250 A maximum continuous AC passthrough from grid to load.
Together with the separate GRID, LOAD and GEN connections, this makes the inverter capable of functioning as a central power-management component within complex commercial energy systems.
A built-in LCD touchscreen and LED status indicators provide direct access to system information and inverter settings.
The monitoring interface can display information including:
Communication interfaces include:
Deye additionally lists optional monitoring via GPRS, Wi-Fi, Bluetooth, 4G and LAN.
The SUN-125K-SG02HP3-EU-GM10 incorporates extensive electrical protection functions, including:
These integrated protections contribute to safe and reliable operation when the inverter is correctly designed, installed and commissioned according to Deye's instructions and applicable local regulations.
The SUN-125K-SG02HP3-EU-GM10 features an IP65-rated enclosure and wall-mounted installation design.
Specified operating conditions include:
The inverter measures approximately 734 × 1,091 × 344 mm (W × H × D), excluding connectors and mounting brackets, and weighs approximately 161.7 kg.
| Specification | SUN-125K-SG02HP3-EU-GM10 |
|---|---|
| Inverter type | Three-phase high-voltage hybrid inverter |
| Rated AC input/output active power | 125,000 W |
| Max. AC input/output apparent power | 135,000 VA |
| Rated AC input/output current | 189.4 / 181.2 A |
| Max. AC input/output current | 204.6 / 195.7 A |
| Maximum continuous AC passthrough | 250 A |
| Off-grid peak power | 1.5 × rated power for 10 s |
| Rated AC voltage | 220/380 V, 230/400 V |
| Rated voltage range | 0.85 Un–1.1 Un |
| Grid connection | 3L + N + PE |
| Grid frequency | 50 Hz / 60 Hz |
| Frequency range | 45–55 Hz / 55–65 Hz |
| Power factor adjustment range | 0.8 leading to 0.8 lagging |
| THDi | <3% of nominal power |
| DC injection current | <0.5% In |
| Battery type | Lithium-ion |
| Battery voltage range | 160–1,000 V |
| Number of battery inputs | 2 |
| Max. charging current | 100 + 100 A |
| Max. discharging current | 100 + 100 A |
| Charging strategy | Self-adaption to BMS |
| Max. PV access power | 250,000 W |
| Max. PV input power | 200,000 W |
| Max. PV input voltage | 1,000 V |
| PV start-up voltage | 180 V |
| PV input voltage range | 180–1,000 V |
| MPPT operating range | 150–850 V |
| Rated PV input voltage | 650 V |
| Number of MPPT trackers | 10 |
| PV strings per MPPT | 2 |
| Total PV string capability | 20 |
| Max. operating PV current | 42 A per MPPT |
| Max. PV short-circuit current | 63 A per MPPT |
| Maximum efficiency | 98.70% |
| Euro efficiency | 98.10% |
| MPPT efficiency | >99% |
| Display | LCD + LED |
| Communication | RS485 / RS232 / CAN |
| Monitoring | GPRS / Wi-Fi / Bluetooth / 4G / LAN optional |
| Cooling | Intelligent air cooling |
| Ingress protection | IP65 |
| Operating temperature | -40°C to +60°C; derating above 45°C |
| Ambient humidity | 0–100% |
| Maximum altitude | 3,000 m |
| Noise | ≤65 dB |
| Topology | Non-isolated |
| Overvoltage category | OVC II (DC) / OVC III (AC) |
| Dimensions | 734 × 1,091 × 344 mm |
| Weight | 161.7 kg |
According to the supplied Deye documentation, the inverter series lists the following grid regulations:
IEC 61727, IEC 62116, CEI 0-21, EN 50549, NRS 097, RD 140, UNE 217002, OVE-Richtlinie R25, G99 and VDE-AR-N 4105.
Safety and EMC standards listed include:
IEC/EN 61000-6-1, IEC/EN 61000-6-2, IEC/EN 61000-6-3, IEC/EN 61000-6-4, IEC/EN 62109-1 and IEC/EN 62109-2.
The supplied user manual also contains an EU Declaration of Conformity covering the SUN-125K-SG02HP3-EU-GM10 series.
Important: The presence of a grid regulation in Deye's technical documentation should not automatically be interpreted as confirmation that every hardware/firmware version is approved for every installation in every country. The current country-specific Deye certification should always be checked before installation.
Deye specifies a 5-year / 10-year warranty, with the applicable warranty period dependent on the final installation site and the conditions of Deye's current warranty policy.
The DEYE SUN-125K-SG02HP3-EU-GM10 is particularly suitable for high-power three-phase installations where solar generation, battery storage and intelligent power management must be integrated into one scalable platform.
Typical applications include commercial and industrial PV + battery systems, high-capacity self-consumption installations, peak-shaving systems, commercial backup-power systems, AC-coupled battery retrofits, generator-supported installations, zero-export installations and scalable multi-inverter energy-storage systems.
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