1. Introduction
The SRNE SPI-(16-20)K-H3P is a high-performance three-phase off-grid solar storage inverter designed for residential and commercial applications in the EU market. It supports low voltage batteries and delivers high-quality pure sine wave AC power. Featuring advanced MPPT technology for up to 99% efficiency, comprehensive safety measures, and intelligent functions, this inverter is an all-in-one solution for your solar power system.
2. Safety Information
Please read all instructions and warnings carefully before installation and operation. Failure to follow these instructions may result in electric shock, fire, or severe injury.
- Installation must be performed by qualified personnel in accordance with local electrical codes and regulations.
- Ensure the inverter is disconnected from all power sources (PV, battery, grid) before performing any maintenance or wiring.
- Do not attempt to repair the inverter yourself. Contact qualified service personnel.
- The inverter features comprehensive security from hardware to software and multiple safety certifications.
- External load anti-backflow protection is integrated for enhanced safety.
3. Package Contents
Upon unpacking, please verify that all items listed below are included and undamaged. If anything is missing or damaged, contact your supplier immediately.
- SRNE SPI-(16-20)K-H3P Solar Inverter Unit
- User Manual
- Inspection & Testing Report
- Mounting Bracket and Hardware (screws, wrench)
- Communication Cable (e.g., RS-485)
- Optional: Wi-Fi Module (if purchased separately or included with specific models)
Note: The unboxing video provided is for a similar 10KW split-phase inverter and may not perfectly represent the contents of this specific three-phase model.
Video 1: Unboxing of a similar Watt Solar Inverter, demonstrating typical packaging and components.
4. Product Overview
The SRNE SPI-(16-20)K-H3P inverter features a robust design with clear indicators and accessible connection points.
Key Features:
- Efficiency: Advanced MPPT technology with up to 99% efficiency, supporting up to 36A+36A PV input current.
- Reliable: Outputs high-quality pure sine wave AC power, up to 20kW load power, and offers 2 charging modes.
- Safety: Comprehensive security from hardware to software, multiple safety certifications.
- User-Friendly: Modern aesthetic design, easy to install and use.
- All-in-one: Up to 360A charging current, supports Li-ion battery BMS communication.
- Intelligent: Exclusive Li-ion battery BMS dual activation, time-slot function for cost savings, energy-saving mode.
5. Specifications
Detailed technical specifications for the SRNE SPI-(16-20)K-H3P series inverters:
| Attribute | Value |
|---|---|
| Brand Name | SRNE |
| Model Number | SPI-(16-20)K-H3P |
| Type | DC/AC Inverters, Off grid inverter |
| Product Name | Solar Inverter |
| Application | Home Solar Power System |
| Origin | Mainland China (Guangdong) |
| Size (W x H x D) | 593.4*803.4*215mm |
| Weight | 50KG |
| Protection Degree | IP20, Indoor only |
| Ambient Temperature | -10~55°C, >45°C derated |
| Noise | <50dB |
| Cooling Method | Air cooling |
| Warranty | 18 months |
| Attribute | SPI-16K-H3P | SPI-18K-H3P | SPI-20K-H3P |
|---|---|---|---|
| Rated AC Output Power | 16000W | 18000W | 20000W |
| Max. AC Output Power | 17600VA | 19800VA | 22000VA |
| Rated AC Output Current | 23.2A | 26.0A | 29.0A |
| Output Voltage | 230/400Vac (Three-Phase) | ||
| Output Frequency | 50/60Hz | ||
| Output Waveform | Pure Sine Wave | ||
| Battery Type | Li-ion / Lead-Acid / User Defined | ||
| Rated Battery Voltage | 48Vdc | ||
| Battery Voltage Range | 40Vdc~60Vdc | ||
| Max PV Charging Current | 300A | 360A | 360A |
| Max. Charging/Discharging Current | 300A | 360A | 360A |
| No. of MPPT Trackers | 2 | ||
| Max. PV Input Power | 15000W/15000W | ||
| Min. PV Input Voltage / Start-Up Voltage | 160Vdc | ||
| Max. PV Input Voltage | 1000Vdc | ||
| MPPT Operating Voltage | 160Vdc-800Vdc | ||
| Rated Input Voltage (Grid/Generator) | 230/400Vac (Three-Phase) | ||
| Rated Input Frequency Range (Grid/Generator) | 50/60Hz | ||
| AC Voltage Range (Grid/Generator) | Phase voltage 170-280V, Line voltage 305-485V | ||
| MPPT Tracking Efficiency | >99% | ||
| Max. Efficiency | 97.6% | ||
| Communication Interfaces | RS-485 / CAN / USB / Dry Contact | ||
| External Module (optional) | WI-FI / GPRS | ||
| Certification | IEC62104-1, IEC62109-2 | ||
| EMC | EN61000-6-1, EN61000-6-3 | ||
6. Installation
The SRNE inverter is designed for easy installation. Ensure the installation site is well-ventilated, protected from direct sunlight and moisture, and within the specified ambient temperature range.
6.1 Mounting
- Select a sturdy vertical surface capable of supporting the inverter's weight (approx. 50KG).
- Use the provided mounting bracket and hardware to securely attach the inverter to the wall.
- Ensure adequate clearance around the inverter for proper air circulation and cooling.
6.2 Wiring Connections
All wiring must comply with local electrical codes. Refer to the connection ports shown in Figure 4.
- PV Input: Connect the solar panel strings to the designated PV input terminals. Observe correct polarity and voltage limits (160Vdc~1000Vdc).
- Battery Connection: Connect the battery bank to the BAT+ and BAT- terminals. Ensure correct polarity and that the battery voltage is within 40Vdc~60Vdc. The inverter supports Lead-Acid, Lithium, and user-defined battery types.
- Grid/Generator Input: Connect the AC grid or generator supply to the GRID input terminals.
- Load Output: Connect your household or commercial loads to the LOAD output terminals.
- Communication: Connect RS-485, CAN, or USB cables for monitoring and control. Install the optional Wi-Fi/GPRS module if remote monitoring is desired.
7. Operation
The SRNE inverter offers flexible operation modes and intelligent features for optimized energy management.
7.1 Power-On Sequence
- Ensure all wiring connections are secure and correct.
- Turn on the battery breaker.
- Turn on the PV array breaker.
- Turn on the AC grid/generator breaker (if connected).
- Power on the inverter using its main switch.
- Observe the display for status indicators and ensure normal operation.
7.2 Operating Modes
The inverter supports two primary power supply modes:
- PV-only Mode: Power is primarily supplied by solar PV.
- Hybrid Charging Mode: Combines PV and other sources (e.g., grid, generator) for charging batteries and supplying loads.
Two charging modes are available, configurable via the inverter's interface or monitoring application.
7.3 Intelligent Features
- Li-ion Battery BMS Dual Activation: Ensures proper communication and management with Lithium-ion batteries.
- Time-slot Function: Allows users to set specific time periods for charging/discharging to optimize energy usage and save costs.
- Energy Saving Mode: Reduces power consumption during periods of low load or high battery charge.
- WiFi Real-time Monitoring: Monitor your system's performance and status remotely via a dedicated mobile application.
8. Maintenance
Regular maintenance ensures the longevity and optimal performance of your inverter.
- Periodic Inspection: Visually inspect the inverter and all connections for any signs of damage, corrosion, or loose wiring.
- Cleaning: Keep the inverter's ventilation openings clear of dust and debris to ensure proper air cooling. Use a soft, dry cloth for cleaning the exterior.
- Firmware Updates: Check the manufacturer's website periodically for firmware updates to ensure your inverter has the latest features and bug fixes.
- Battery Health: Monitor battery voltage and health regularly, especially for lead-acid batteries, to ensure they are operating within optimal parameters.
9. Troubleshooting
This section provides solutions to common issues. For more complex problems, please contact technical support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Inverter not powering on | No battery power; DC breaker off; Faulty wiring | Check battery connections and voltage; Ensure DC breaker is on; Verify wiring. |
| No AC output | Overload; AC breaker off; Inverter fault | Reduce load; Check AC breaker; Consult manual for error codes or contact support. |
| Low PV input/charging | Shading on panels; Dirty panels; PV wiring issue | Clear shading; Clean panels; Check PV connections and voltage. |
10. User Tips
No specific user tips are available at this time. Always refer to the detailed instructions in the full user manual for best practices and safety guidelines.
11. Warranty and Support
The SRNE SPI-(16-20)K-H3P Solar Inverter comes with an 18-month warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use.
For technical support, warranty claims, or any inquiries, please contact your supplier or SRNE customer service:
- WhatsApp: +86 19176692407
- Email: 1799483840@qq.com
Please have your product model and serial number ready when contacting support.