Wholesale 3kW O Solar Inverter | China Factory Manufacturer
Bulk 3kW off-grid solar inverter supplier. 24VDC, 80A MPPT, 93% conversion efficiency. Low MOQ for EPC contractors. Contact for factory OEM pricing.
Product Overview & System Integration
The 3kW Off-Grid Solar Inverter operates as an integrated single-phase power conversion unit for decentralized microgrids, cabins, and backup power applications. Running on a nominal 24VDC battery architecture, the system combines a high-voltage MPPT solar charge controller and a pure sine wave inverter into a single chassis. As a direct China manufacturer, Xiamen Hemao Industry executes structural customization, including custom enclosure mold development, localized PCB layout adaptations, and specialized firmware adjustments for regional utility grid standards. The inverter supports automatic AC bypass switching with a 10ms transfer time, protecting connected appliances during utility grid dropouts. Its open communication architecture permits integration with automated diesel generator remote start contacts.
Material & Technical Specifications
|
Technical Parameter |
Specification Data |
|
Rated Output Power |
3kW / 3kVA |
|
Surge Power (Peak) |
6kVA (5 Seconds) |
|
Nominal Battery Voltage |
24 VDC |
|
Max. PV Array Power |
4kW |
|
MPPT Operating Voltage Range |
120 VDC - 380 VDC |
|
Max. Solar Charging Current |
80 A |
|
Peak Efficiency |
93% |
|
Output Waveform |
Pure Sine Wave (230VAC ±5%) |
|
Transfer Time |
10ms (For Personal Computers) / 20ms (For Home Appliances) |
|
Safety Protections |
Over-Voltage (OVP), Over-Current (OCP), Overload, Short Circuit, Over-Temp |
|
Environmental Limits |
Operating Temp: -10°C to 50°C / Altitude: < 3,000m |
|
Design Life |
> 10 Years |
Quality Control & Global Standards
Our factory production lines strictly comply with ISO 9001 quality management systems. Every 3kW off-grid solar inverter undergoes 100% full-load aging tests for 24 hours at 40°C ambient temperatures before shipping. All components are verified via automated optical inspection (AOI) to eliminate soldering defects. The hardware is certified under CE (EN62109), RoHS, and IEC standards, ensuring regulatory compliance for global distribution.
Packaging & Logistics Safety
Units are individually packed in 5-layer double-wall corrugated export cartons reinforced with custom-molded high-density EPE foam padding. For bulk wholesale distribution, cartons are stacked on non-fumigation ISPM-15 compliant wooden pallets, sealed with UV-resistant stretch wrap, and secured with heavy-duty plastic tension banding. This multi-layer transit strategy eliminates structural vibration damage during maritime shipping and container logistics handling.
Typical Application Scenarios
This 3kW unit is widely deployed in remote telecom stations, solar irrigation pump configurations, off-grid residential cabins, and industrial RV power systems. The 2X surge capacity accommodates initial inductive current spikes from small water pumps, household refrigerators, and outdoor lighting networks.
FAQ
Q: How does the 3kW inverter manage charging parameters for custom LiFePO4 battery voltage thresholds?
A: The LCD control panel permits manual configuration of bulk, float, and low-voltage cut-off settings. For wholesale orders, our factory engineers flash custom firmware directly to the PCB, pre-programming exact charge profiles to match proprietary lithium or lead-acid chemistry specifications without field modification.
Q: What is the estimated operational lifespan under high-ambient temperature profiles in desert environments?
A: The unit incorporates industrial-grade capacitors and low-loss MOSFETs rated for a 10-year design life. Internal temperature sensors adjust the variable-speed cooling fans linearly. Continuous operation above 45°C triggers automatic thermal derating to defend internal power modules against premature component breakdown.
Q: What are the factory MOQs and lead times for custom chassis branding or private labeling?
A: We require a minimum order quantity of 50 units for custom silk-screen brand printing and localized packaging modifications. The factory production lead time for standard wholesale batches is 15-20 days, whereas custom RAL powder-coated enclosures require an additional 7 days for paint-line setup.
Call to Action (CTA)
Request a precise system wiring diagram and wholesale project quote within 24 hours. Batch OEM samples available for quality testing and grid compliance verification.
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