Deye SUN-18/20/25K-G05 Three Phase String Inverter
- Category: On-Grid Inverter
- Features
Product Description
Deye SUN-18/20/25K-G05 Three Phase String Inverter
The Deye SUN-18/20/25K-G05 is a three phase string inverter series for commercial and industrial solar PV systems. Available in 18 kW, 20 kW and 25 kW ratings, it combines two independent MPPT trackers, a wide 200–1000 V MPPT range and up to 98.5% maximum efficiency to support flexible string design and dependable energy conversion. With zero-export capability, optional string-level monitoring and IP65 protection, the G05 series is designed for grid-connected rooftop and distributed solar installations.
Product Features
- Two MPPT trackers: Two trackers with two strings per tracker support PV arrays with different orientations or operating conditions.
- High-efficiency solar conversion: Up to 98.5% maximum efficiency, 98% European efficiency and over 99% MPPT efficiency.
- Flexible DC design: 1100 V maximum PV input voltage, 200–1000 V MPPT range and 26 A + 26 A maximum operating input current.
- Grid-support functions: Supports zero-export applications, VSG application and adjustable power factor from 0.8 leading to 0.8 lagging.
- Robust outdoor installation: IP65 enclosure, intelligent air cooling and operation from -25°C to +60°C, with derating above 45°C.
- Integrated protection and monitoring: Type II DC and AC surge protection, anti-islanding monitoring, RCD detection and optional GPRS, Wi-Fi, Bluetooth, 4G or LAN monitoring.
- Optional enhancements: Intelligent string monitoring and Anti-PID functionality are available as options.
Specifications
Model and AC Output
| Specification | SUN-18K-G05 | SUN-20K-G05 | SUN-25K-G05 |
|---|---|---|---|
| Rated AC output active power | 18 kW | 20 kW | 25 kW |
| Maximum AC output apparent power | 19.8 kVA | 22 kVA | 27.5 kVA |
| Rated AC output current | 27.3 / 26.1 A | 30.3 / 29 A | 37.9 / 36.2 A |
| Maximum AC output current | 30 / 28.7 A | 33.3 / 31.9 A | 41.7 / 39.8 A |
PV Input and Efficiency
| Specification | SUN-18K-G05 | SUN-20K-G05 | SUN-25K-G05 |
|---|---|---|---|
| Maximum PV input power | 23.4 kW | 26 kW | 32.5 kW |
| Maximum PV input voltage | 1100 V | 1100 V | 1100 V |
| Start-up voltage | 250 V | 250 V | 250 V |
| MPPT voltage range | 200–1000 V | 200–1000 V | 200–1000 V |
| Rated PV input voltage | 600 V | 600 V | 600 V |
| Maximum operating PV input current | 26 A + 26 A | 26 A + 26 A | 26 A + 26 A |
| Maximum input short-circuit current | 39 A + 39 A | 39 A + 39 A | 39 A + 39 A |
| MPPT trackers / strings per tracker | 2 / 2+2 | 2 / 2+2 | 2 / 2+2 |
| Maximum efficiency | 98.5% | 98.5% | 98.5% |
| European efficiency | 98% | 98% | 98% |
| MPPT efficiency | >99% | >99% | >99% |
Grid, Protection and General Data
| Specification | Value |
|---|---|
| Rated output voltage / range | 220/380 V, 230/400 V; 0.85Un–1.1Un |
| Grid connection | 3L/N/PE |
| Rated grid frequency / range | 50 Hz / 45–55 Hz; 60 Hz / 55–65 Hz |
| Power factor adjustment | 0.8 leading to 0.8 lagging |
| Total harmonic distortion (THDi) | <3% |
| DC injection current | <0.5% In |
| DC / AC surge protection | Type II / Type II |
| Communication | RS485 / RS232 |
| Optional monitoring | GPRS / Wi-Fi / Bluetooth / 4G / LAN |
| Operating temperature | -25°C to +60°C; derating above +45°C |
| Ambient humidity | 0–100% |
| Maximum altitude | 4000 m |
| Noise | ≤50 dB |
| Enclosure rating | IP65 |
| Topology | Non-isolated |
| Overvoltage category | OVC II (DC), OVC III (AC) |
| Dimensions (W × H × D) | 362 × 527 × 220 mm, excluding connectors and brackets |
| Weight | 20 kg |
| Cooling | Intelligent air cooling |
| Warranty | 5 years |
| Grid regulations | IEC 61727, IEC 62116, CEI 0-21, EN 50549, NRS 097, RD 140, UNE 217002, OVE-Richtlinie R25, G99, VDE-AR-N 4105 |
| Safety / EMC standards | IEC/EN 61000-6-1/2/3/4; IEC/EN 62109-1; IEC/EN 62109-2 |
FAQ
1.What is the Deye SUN-18/20/25K-G05 used for?
The G05 series is a three phase string inverter for commercial and industrial grid-connected solar PV systems. It converts DC electricity from PV strings into AC electricity for three-phase grids.
2.How many MPPT trackers does the G05 inverter have?
Each SUN-18/20/25K-G05 inverter has two MPPT trackers and supports two PV strings per tracker. This helps accommodate different array orientations or irradiance conditions.
3.What is the MPPT voltage range of the Deye G05 inverter?
The MPPT voltage range is 200–1000 V. The inverter has a 1100 V maximum PV input voltage and a 250 V start-up voltage.
4.Does the SUN-18/20/25K-G05 support zero export?
Yes. The datasheet lists zero-export application support. System-level configuration and applicable local grid requirements should be confirmed during project design.
5.Is the Deye G05 three phase inverter suitable for outdoor installation?
Yes. The inverter has an IP65 enclosure, intelligent air cooling and an operating temperature range of -25°C to +60°C. Output derating applies above +45°C.
6.What protection functions are included?
The inverter includes DC reverse-polarity, AC overcurrent, AC overvoltage, AC short-circuit, thermal and anti-islanding protection, insulation impedance monitoring, earth-fault detection, RCD detection, and Type II DC/AC surge protection.
7.Which monitoring options are available?
The standard communication interfaces are RS485 and RS232. Optional monitoring modes include GPRS, Wi-Fi, Bluetooth, 4G and LAN.
