5kW Off Grid Solar Inverter

Wholesale 5kW Off-Grid Solar Inverter Factory | China Supplier

B2B 5kW off-grid solar inverter factory supplier. 48VDC, 100A MPPT, 93.5% efficiency. Supports 6-unit parallel expansion. Low MOQ. Get OEM pricing.

Product Overview & System Integration

The 5 kW off-grid solar inverter operates as a dual-stage high-frequency power conversion unit optimized for isolated microgrids and residential backup systems. Running on a nominal 48VDC battery topology, it features an integrated high-voltage MPPT tracker to maximize energy collection from solar arrays while minimizing DC string wiring costs. As an established China factory supplier, Xiamen Hemao Industry delivers structural hardware and firmware modifications, allowing direct compatibility with diverse grid profiles and automatic diesel generator dry-contact activation. The integrated 10ms transfer switch guarantees zero power interruption for critical household and light commercial loads during utility failures.

Material & Technical Specifications

Quality Control & Global Standards

All 5kW inverters undergo an automated optical inspection (AOI) followed by a 100% full-load burn-in test for 24 hours at 45°C ambient temperature. Production complies with ISO 9001 certification frameworks, with units meeting CE (EN62109-1/-2), RoHS, and IEC electrical safety guidelines. Double conformal coating is applied to the internal PCBA to safeguard circuits against dust and moisture ingress, preventing premature component degradation.

Packaging & Logistics Safety

Units are enclosed in 5-layer double-wall corrugated shipping boxes lined with custom-molded high-density polyethylene (EPE) foam inserts to mitigate transit vibration. For wholesale export shipments, products are stacked on non-fumigation ISPM-15 compliant pallets, wrapped in high-strength clear stretch film, and bound with heavy-duty plastic strapping to guarantee pallet integrity during multi-port maritime distribution.

Typical Application Scenarios

This 5kW unit is deployed in residential off-grid energy storage, solar irrigation pump systems, remote telecom base stations, and mobile RV power networks. The 2X surge capacity accommodates heavy inductive startup spikes from appliances like water pumps, refrigerators, and small air conditioners.

FAQ

Q: How does this 5kW inverter handle phase synchronization when configured for a 3-phase output array?

A: When three units are connected via parallel data cables, the integrated DSP automatically designates a master unit to generate the primary phase angle. The remaining units operate as phase-shifted slaves at 120-degree intervals, maintaining strict voltage balance even under 100% unbalanced phase loads.

Q: What is the thermal derating profile and long-term lifespan projection in high-temperature environments?

A: The inverter delivers a full 5kW output up to 40°C. Above this, a linear power derating occurs to shield the IGBT modules from thermal stress. Sourcing top-tier Japanese capacitors and optimized heat sinks ensures an operational design life exceeding 10 years under standard operating conditions.

Q: What is the minimum order quantity for custom silk-screen branding and customized default firmware configurations?

A: We require a low MOQ of 50 units for factory-level OEM services. This includes custom casing paint (RAL specifications), laser-etched distributor branding, and pre-flashed firmware parameters tailored to your regional utility voltage thresholds or specific lithium battery BMS communication protocols.

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.