Deye GB-L-Pro
This datasheet provides complete technical specifications for the GB-L-Pro series, including models GB-L8-Pro, GB-L12-Pro, GB-L16-Pro, GB-L20-Pro, and GB-L24-Pro. Key specifications include LiFePO₄ cell chemistry, nominal module voltage of 102.4V, and IP65 protection. Designed for residential solar self-consumption in the United Arab Emirates region.
Technical Specifications
| Parameter | GB-L8-Pro | GB-L12-Pro | GB-L16-Pro | GB-L20-Pro | GB-L24-Pro |
|---|---|---|---|---|---|
| Battery Module | |||||
| Cell Chemistry | LiFePO₄ | ||||
| Module Model | GB-L-Pro | ||||
| Module Energy (kWh) | 4 | ||||
| Nominal Module Voltage (V) | 102.4 | ||||
| Module Capacity (Ah) | 40 | ||||
| Battery System | |||||
| Number of Battery Modules in Series (Optional) | 2 | 3 | 4 | 5 | 6 |
| Nominal System Voltage (V) | 204.8 | 307.2 | 409.6 | 512 | 614.4 |
| Operating Voltage of System (V) | 166.4 ~ 700 | ||||
| System Energy (kWh) | 8 | 12 | 16 | 20 | 24 |
| Usable System Energy (kWh) | 7.2 | 10.8 | 14.4 | 18 | 21.6 |
| Recommended Charge/Discharge Current (A) | 20 | ||||
| Nominal Discharge Current (A) | 40 | ||||
| Peak Discharge Current (2 min, 25°C) (A) | 50 | ||||
| Operating Conditions | |||||
| Operating Temperature (°C) | Charge: -20 ~ 55 / Discharge: -20 ~ 55 | ||||
| Humidity | 5% ~ 90% | ||||
| Altitude | ≤2000m | ||||
| Storage Temperature (°C) | 0 ~ 35 | ||||
| Mechanical Data | |||||
| Dimensions (W×H×D, mm) | 540 × 385 × 650 | 540 × 385 × 870 | 540 × 385 × 1090 | 540 × 385 × 1310 | 540 × 385 × 1530 |
| Weight (kg) | 97 | 136 | 175 | 214 | 253 |
| IP Rating | IP65 | ||||
Note: Specifications are based on the official Deye SUN-18/20/21K-G04-LV datasheet. Values may be subject to change; always verify against the latest manufacturer documentation before system design and procurement.
Key Features & Technical Highlights
Dual MPPT for LV Three-Phase Systems
The SUN-18/20/21K-G04-LV series incorporates two independent MPPT trackers optimized for low-voltage three-phase grid connections. Each MPPT supports 3 strings (3+3 configuration), enabling flexible array designs across different roof orientations or partial shading scenarios.
With a wide MPPT voltage range of 200V to 700V and rated DC bus voltage of 350V, the inverter accommodates various string configurations while maintaining peak efficiency on LV 127V/220V and 133V/230V networks.
Industry-Leading Efficiency
Maximum conversion efficiency of 98.6% combined with MPPT tracking efficiency exceeding 99% minimizes energy losses throughout the system lifetime. This high efficiency directly translates to improved energy yield and faster return on investment for commercial installations.
Comprehensive Protection Suite
- DC Side: Reverse polarity protection, surge protection (Type II), integrated DC switch
- AC Side: Overcurrent, overvoltage, and short circuit protection with Type II surge protection
- System Safety: Anti-islanding, residual current detection, insulation impedance monitoring
- Thermal Management: Intelligent air cooling with automatic derating above 45°C
- Optional: Arc Fault Circuit Interrupter (AFCI) for enhanced fire safety
Smart Monitoring & Grid Support
Standard RS485/RS232 communication ports with optional GPRS, WiFi, Bluetooth, 4G, and LAN connectivity enable comprehensive remote monitoring. Zero Export and VSG (Virtual Synchronous Generator) applications provide advanced grid interaction capabilities for self-consumption optimization and grid stability support.
Applications & Use Cases
Typical Applications
- Solar self-consumption
- Backup power
- Time-of-use optimization
- Off-grid systems
- Residential energy storage
Installation Notes (United Arab Emirates)
Climate Suitability: Hot desert climate with temperatures reaching 50°C in summer. High humidity in coastal areas (up to 100% RH). Frequent sandstorms and dust.
Regulatory: Coordinate with DEWA, ADDC, ESMA for grid connection requirements.
- Ensure proper ventilation for optimal performance.
- Consider local utility regulations for battery storage.
- Regular maintenance checks are recommended for longevity.
Model Selection Guide
Selecting between the SUN-18K, SUN-20K, and SUN-21K-G04-LV depends on:
- Array Size: Match PV array DC capacity to inverter input power (DC/AC ratio typically 1.1–1.3×)
- Available LV Service Capacity: Verify main breaker and feeder ampacity can accommodate inverter output current
- Load Profile: Size to typical daytime load for maximum self-consumption in zero-export applications
- Expansion Plans: Consider future load growth when selecting inverter capacity
| Model | AC Output | Max PV Input | Typical Array Size* |
|---|---|---|---|
| SUN-18K-G04-LV | 18 kW | 23.4 kW | 19.8 – 23.4 kWp |
| SUN-20K-G04-LV | 20 kW | 26 kW | 22 – 26 kWp |
| SUN-21K-G04-LV | 21 kW | 27.3 kW | 23.1 – 27.3 kWp |
*Based on DC/AC ratio of 1.1–1.3× for optimal energy harvest in high-irradiance locations.
Frequently Asked Questions
What is the cycle life of the GB-L-Pro?
The GB-L-Pro battery series is designed for a long cycle life, typically exceeding 6000 cycles at 80% depth of discharge. This ensures durability and reliability for residential high-voltage applications.
What grid voltage does the GB-L-Pro support?
The GB-L-Pro series operates at nominal system voltages ranging from 204.8V to 614.4V, making it suitable for high-voltage residential applications.
What battery chemistry does the GB-L-Pro use?
The GB-L-Pro series uses LiFePO₄ (Lithium Iron Phosphate) cell chemistry, known for its safety and stability in high-voltage battery systems.
What is the warranty for the GB-L-Pro?
The GB-L-Pro series comes with a 10-year manufacturer warranty, ensuring long-term support and reliability for residential users.
Is the GB-L-Pro suitable for outdoor installation?
Yes, the GB-L-Pro series is suitable for outdoor installation with an IP65 rating, providing protection against dust and water ingress.
What protection features does the GB-L-Pro include?
The GB-L-Pro series includes an integrated explosion relief device, fire protection device, and temperature detection in key parts, enhancing safety and reliability.
Can the GB-L-Pro be used in United Arab Emirates?
Yes, the GB-L-Pro series can be used in the United Arab Emirates, as it meets relevant international certifications like CE and IEC62619.
What monitoring options are available for the GB-L-Pro?
The GB-L-Pro series supports remote updates and real-time alerts, allowing for efficient monitoring and management of the battery system.