Huawei SUN2000-50KTL-M3 inverter, 50kW on-grid three-phase

This inverter converts the energy produced by a large field of panels into three-phase alternating current, which the building uses directly. What sets it apart is the power-to-weight ratio: it delivers 50 kW from a 49 kg device, so it is mounted on a wall without special structures. It is cooled by a controlled ventilation system, which starts only as much as needed, and it can stay outdoors, including in mountain areas.

The rated active power is 50,000 W, and the maximum apparent power 55,000 VA, enough for the roof of a hall or a logistics centre. The 4 MPPT trackers with 8 inputs allow the installation to be divided into independent sections. At night, when it produces nothing, it consumes less than 5.5 W, that is practically nothing on the bill. The device measures 640 x 530 x 270 mm, operates between -25 and +60 degrees C and up to 4,000 m altitude, and the quality of the delivered current is good (distortion below 3%), which matters for the sensitive equipment in the hall. It can be combined with Huawei MERC optimisers, useful when part of the panels is shaded.

Maximum active power at cos phi = 1: 55,000 W. Output 400 Vac / 480 Vac, 3W+(N)+PE, 50/60 Hz, 72.2 A rated current and 79.8 A maximum at 400 Vac, THD below 3%, power factor adjustable between 0.8 capacitive and 0.8 inductive. DC: 1,100 V maximum voltage, 4 MPPT / 8 inputs, 30 A per MPPT (20 A per input), 40 A short-circuit current per MPPT, MPPT range 200-1,000 V, rated input voltage 600 V, start-up at 200 V; maximum efficiency 98.5%, European 98.0%. Protections: DC disconnection, anti-islanding, AC overcurrent, DC reverse polarity, type II surge arresters on DC and AC, insulation resistance and residual current monitoring, electric arc protection, PID recovery. Communication RS485, MBUS and WLAN through the FusionSolar app; compatible with MERC-1100/1300W-P optimisers.

Who it suits

Suitable for halls, logistics centres and medium-power photovoltaic parks, especially where the installation has to be done quickly, on a wall, without a crane.

Terms explained

• THD: The extent to which the shape of the delivered current deviates from the ideal one; below 3% means clean current, friendly to electronic equipment.
• Anti-islanding: The function that stops the inverter immediately if the grid goes down, so as not to send current onto the lines where the electricians are working.
• Optimiser: A small device mounted on each panel, which limits the losses when only part of the panels is shaded.

Technical specifications

Recommended applications

• Commercial and industrial PV plants
• Roofs of halls and logistics centres
• Medium-power photovoltaic parks
• Systems with Huawei MERC optimisers

Warranty

Standard manufacturer warranty 5 years, with the possibility of extension

Technical details

Specifications confirmed from the manufacturer's datasheet

Huawei SUN2000-50KTL-M3 is a 50 kW on-grid three-phase string inverter for commercial and industrial applications, remarkable for its high power density: only 49 kg and 640 x 530 x 270 mm. The rated active power is 50,000 W, the maximum apparent power 55,000 VA, and the maximum active power at cos phi = 1 is also 55,000 W. The output is 400 Vac / 480 Vac, 3W+(N)+PE, 50/60 Hz, with 72.2 A rated current and 79.8 A maximum current at 400 Vac, THD below 3% and power factor adjustable between 0.8 capacitive and 0.8 inductive.

The DC side accepts 1,100 V maximum voltage, with 4 MPPT trackers and 8 string inputs, 30 A maximum current per MPPT (20 A per input) and 40 A short-circuit current per MPPT. The MPPT range is 200-1,000 V, the rated input voltage 600 V, and the start-up voltage 200 V. The maximum efficiency is 98.5%, and the European weighted efficiency 98.0%.

The IP66 enclosure with Smart Air Cooling allows outdoor installation at -25...+60 C, up to 4,000 m altitude, with night-time consumption below 5.5 W. Protections: disconnection on the DC side, anti-islanding, AC overcurrent, DC reverse polarity, type II surge arresters on DC and AC, insulation resistance monitoring, residual current, electric arc protection and PID recovery. Communication RS485, MBUS and WLAN through the FusionSolar app; compatible with MERC-1100/1300W-P optimisers.