Solis20kW S5 Dual MPPT

The Solis 20kW S5 3 Phase Dual MPPT – DC inverter is a robust, efficient, and reliable grid-tied solar inverter designed for commercial and industrial photovoltaic (PV) installations that require dependable three-phase performance. Positioned as a mid-range commercial unit, the Solis 20kW S5 inverter blends high conversion efficiency, flexible string configuration, and strong safety features — making it well suited for businesses, schools, farms, and mid-size rooftops aiming to optimise energy production and lower electricity costs.

At its core, the Solis 20kW S5 inverter delivers a nominal output of 20 kW AC power with the ability to handle a significantly higher DC input, allowing the connected solar array to be oversized relative to the inverter’s rated output. The unit features dual Maximum Power Point Tracking (MPPT) channels, enabling two independent string inputs to be maximised separately. This flexibility helps reduce energy losses caused by mismatch conditions such as partial shading or strings oriented in different directions — a frequent challenge in complex commercial installations.

One of the standout attributes of this inverter is its high conversion efficiency, with peak efficiencies typically exceeding 98 %. This ensures a high proportion of the DC energy generated by solar panels is converted into AC grid power, yielding more electricity and higher energy returns over the system’s lifetime. The wide DC voltage range further adds design flexibility, allowing system designers to choose string configurations that match the specific layout and solar module characteristics of the site.

Safety and durability are integral to the Solis 20kW S5’s design. The unit includes Type II surge protection on both the DC and AC circuits, helping protect the inverter and connected equipment from transient voltage spikes. Arc-fault circuit interruption (AFCI) and reverse DC polarity protection are built in to reduce risks associated with wiring faults or incorrect installation. Its IP66 weatherproof enclosure ensures the inverter can withstand environmental challenges such as dust, rain, and temperature fluctuations, making it suitable for outdoor installations in diverse climates.

In terms of connectivity and monitoring, the Solis 20kW S5 supports multiple communication options, including RS485, Wi-Fi, and optional GPRS, allowing remote performance tracking and diagnostics through platforms like SolisCloud. This capability simplifies maintenance, enhances system uptime, and provides real-time data on energy production and system health.

Installation and operation are made straightforward with clear labeling, accessible connection terminals, and integrated safety switches. Combined with a competitive warranty and a reputation for reliability, the Solis 20kW S5 3 Phase Dual MPPT – DC inverter represents a solid choice for commercial solar projects seeking high performance, durability, and intelligent design.