KEHUA SPI50K-B 50kW Three-Phase Grid-Tied Solar Inverter KRAFT&DELE
Key information
Availability:Temporarily out of stock — ask for availability
Shipping cost:From 39.73 Euro
catalog number:50KW
Availability:
Product condition:New, originally packaged
Guarantee:24 months of consumer protection
Weight:65,00 kg
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KEHUA SPI50K-B Inverter – 50 kW Grid-Tied Inverter
The KEHUA SPI50K-B is a three-phase grid-tied inverter designed for commercial and industrial 50 kW solar PV installations. It features two independent MPPT trackers, integrated AC/DC surge protection and multi-channel remote communication, making it suitable for both ground-mounted systems and rooftop installations on commercial buildings.
Product Features
2 independent MPPT trackers
Two separate maximum power point tracking circuits allow strings of panels with different orientations or tilt angles to be connected and optimised independently. As a result, losses caused by partial shading or differing exposure angles do not affect the whole system at the same time.
IP65 protection and integrated surge protection
An IP65 rating means the enclosure is completely dust-tight and resistant to water jets, allowing outdoor installation without an additional housing. Integrated AC and DC surge protection removes the need to fit external surge arrestors on either side of the installation.
I&V diagnostics and panel identification
The built-in current-voltage (I&V) curve diagnostics module automatically detects and locates PV modules operating outside specification — with no need for manual measurements on the roof. This shortens servicing time and allows a rapid response in the event of panel degradation or damage.
Industrial-grade components and a 25-year life cycle
All electronic components have been selected to industrial standards, which translates into the full 25-year life cycle declared by the manufacturer. This matters when calculating the return on investment for commercial installations, where the cost of replacing an inverter is a significant item in the operating budget.
Ultra-wide grid voltage range and LVRT function
The inverter supports an extended grid voltage range and features Low Voltage Ride-Through (LVRT) — the ability to keep operating during brief drops in grid voltage without disconnecting the installation. This requirement is increasingly imposed by distribution network operators for installations above a dozen or so kW.
Multi-channel communication and remote updates
Support for RS485, Wi-Fi and GPRS interfaces enables integration with monitoring systems both on local networks and over the mobile network in locations without a permanent internet connection. Remote firmware updates allow fixes and new features to be applied without a service visit to the site.
Technical Specification
| Model | KEHUA SPI50K-B |
| Rated AC output power | 50 kW |
| Maximum output power | 55 kW |
| Rated AC output current | 75.9 A |
| Number of independent MPPT trackers | 2 |
| Enclosure protection rating | IP65 |
| Surge protection | Integrated, AC and DC |
| Current harmonic distortion (THDi) | < 3% |
| LVRT function | Yes |
| Communication interfaces | RS485, Wi-Fi, GPRS |
| Remote firmware updates | Yes |
| I&V diagnostics | Yes |
| Component class | Industrial |
| Declared life cycle | 25 years |
| Intended use | Outdoor |
Full technical specification
Detailed technical data, DC voltage ranges, MPPT input parameters and wiring and installation requirements are set out in the manufacturer's datasheet, available as an attachment to this product.
Typical Applications
- Solar PV installations on the roofs of commercial and industrial buildings
- Solar farms and ground-mounted installations from several tens to several hundred kW
- PV systems for warehouses, production halls and distribution centres
- Installations for public buildings (schools, government offices, hospitals)
- Systems with panels at different orientations or tilt angles (two independent MPPTs)
- Installations in locations without permanent internet access (GPRS communication)
- Projects requiring compliance with network operator requirements (LVRT, THDi < 3%)
Grid compatibility and connection requirements
Before selecting an inverter for an installation, the requirements of the local distribution network operator (DNO) regarding power, power quality parameters and the LVRT function must be verified. The SPI50K-B meets the THDi requirement of below 3%, which Polish DNOs require as standard for installations connected to medium- and low-voltage networks.
Commercial information
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