Xiamen Hemao Industry is a direct China-based manufacturer specializing in the engineering and production of industrial-grade off-grid solar power systems. We provide wholesale solutions for EPC contractors, system integrators, and regional energy distributors. Our factory-direct model eliminates intermediate markups, ensuring competitive pricing for high-capacity energy storage and generation setups. With full-scale customization services available, we adapt component specifications, inverter protocols, and mounting structures to meet specific project voltage and load requirements.
Technical Specifications & Selection Matrix
Selecting the correct off-grid solar system requires a precise match between load profile, battery discharge capability, and environmental constraints. Our standard systems provide industrial-grade performance backed by verified laboratory data.
| System Model | Rated AC Output | Battery Capacity | PV Input Capacity | Peak Load Rating | MOQ |
| HM-OG-5KW | 5000W | 10.24kWh | 6000W | 10000W | 1 Set |
| HM-OG-10KW | 10000W | 20.48kWh | 12000W | 20000W | 1 Set |
| HM-OG-20KW | 20000W | 40.96kWh | 25000W | 40000W | 1 Set |
Customization for Specialized Environments
Our manufacturing capabilities extend beyond off-the-shelf catalog products. We assist EPC contractors in tailoring systems for high-altitude, high-salinity, or extreme temperature environments:
Thermal Management: Custom heat sink designs for inverters operating in +50°C environments to prevent thermal derating.
Firmware Tuning: Modifying MPPT charging algorithms to accommodate specific battery chemistry discharge curves for remote telecom stations.
Structural Engineering: Custom mounting brackets designed for specific wind load requirements and corrosive coastal regions (AL6005-T5 material with anodized coating).
Manufacturing Strengths & Quality Control
As a primary manufacturer, Xiamen Hemao Industry maintains strict adherence to international quality standards to support global infrastructure projects.
QC Standards: 100% EL (Electroluminescence) testing for all solar panels; 48-hour continuous active aging test for all energy storage cabinets.
Certifications: Product lineup compliant with CE, TUV, UN38.3, and MSDS safety standards for international logistics.
Production Capacity: Monthly output exceeding 500 sets, utilizing automated assembly lines to ensure batch consistency and rapid shipment for large-scale EPC orders.
FAQ
Q: Can your off-grid systems be integrated with existing diesel generator backup?
A: Yes. Our systems feature an automatic transfer switch (ATS) interface compatible with standard diesel generators. When the battery state of charge (SOC) drops below 20%, the system triggers a dry contact signal to initiate the generator automatically.
Q: What is the lead time for custom OEM brand printing and chassis color configuration?
A: Standard OEM laser marking is completed within 15 days. Custom chassis colors or structural mold modifications require an additional 10-15 working days for engineering approval and paint line scheduling.
Q: How do you handle the transport of Class 9 dangerous goods (Lithium batteries)?
A: We utilize UN-certified export-grade packaging. All battery modules are secured in reinforced wooden crates with proper fire-retardant padding and labelled according to IMDG code requirements for maritime shipping safety.
Call to Action
Ready to secure your project's power supply? Request a comprehensive system wiring diagram and our latest wholesale price list within 24 hours. For high-volume projects, our technical department provides batch OEM samples to facilitate your quality assessment process. Contact us at linfy@xmcnitg.com to begin your factory-direct procurement.
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