Huawei SUN2000-12KTL-M5 inverter, 12kW on-grid three-phase

The inverter converts the direct current produced by the panels into alternating current and feeds it into the building's installation. This model is on-grid: it works together with the grid and covers consumption at the moment the sun is producing, without battery storage. Artificial-intelligence-assisted arc fault monitoring shuts the system down if a spark appears in a loose contact, and the sealed enclosure allows installation on an outside wall.

The 12.000 W rated power covers the daytime consumption of a building with many circuits — offices, a small hall, a guesthouse — and on the panel side it accepts up to 18.000 Wp, that is about 1,5 times the output power. The four string connections, two on each MPPT, allow the roof to be split over several orientations or slopes. The device weighs 21 kg, measures 546 x 460 x 228 mm and works between -25 and +60 °C, at altitudes of up to 4.000 m. Cooling is fan-assisted, so the device is not completely silent and the grilles must be kept free of dust and leaves; production is tracked in the FusionSolar platform.

12.000 W rated active power, 13.200 VA apparent, at 220/380 V, 230/400 V or 239,6/415 V (3W+N+PE), 50/60 Hz, 17,3 A maximum output current at 400 V, THD below 3%, adjustable power factor 0,8 capacitive...0,8 inductive, maximum efficiency 98,4% / European 97,9%. DC: 2 MPPTs and 4 string connections (maximum 2 per MPPT), 1.100 V maximum voltage, MPPT range 200-1.000 V (nominal 600 V, start-up 200 V), full-load MPPT range 370-800 V, 30 A/MPPT with two strings (20 A with a single string), 40 A short circuit, 18.000 Wp recommended (up to 40.000 Wp with SUN2000-450W-P optimisers). AI-assisted AFCI, string fault detection, residual current monitoring, type II SPD on DC and class II on AC, anti-islanding, AC overcurrent and DC reverse polarity protection, PID recovery; IP66 enclosure with fan cooling, 21 kg, 546 x 460 x 228 mm; RS485 and Smart Dongle-WLAN-FE, optional 4G; compliant with EN/IEC 62109-1/-2, VDE-AR-N 4105 and 4110, EN 50549, CEI 0-21, CEI 0-16, G99, IEC 61727/62116.

Who it suits

Suitable for a villa with high consumption, an office or a small hall, with a three-phase connection and a system of about 12-18 kWp, where consumption takes place during the day and no battery is needed.

Terms explained

• On-grid: The inverter works only together with the electricity grid: it covers consumption in real time and sends the surplus into the grid, but does not store energy.
• String: A group of panels connected in series, like beads on a thread; four string connections mean the roof can be divided into four groups, on different orientations or slopes.
• IP66: Protection code of the enclosure: completely dust-tight and resistant to powerful water jets, so it can be installed outdoors.

Technical specifications

Recommended applications

• Large houses and villas with high consumption
• Guesthouses, workshops and small halls
• SMEs and office buildings
• Commercial self-consumption with grid injection

Warranty

10 years standard in Europe (Huawei Residential Smart PV policy), optionally extendable

Technical details

Specifications confirmed from the manufacturer's datasheet

SUN2000-12KTL-M5 is a three-phase on-grid photovoltaic inverter from the Smart PV Controller series (12-25 kW). The rated active power is 12.000 W and the maximum apparent power 13.200 VA, at 220/380 V, 230/400 V or 239,6/415 V (3W+N+PE), 50/60 Hz; the maximum output current is 17,3 A at 400 V, THD below 3%, adjustable power factor 0,8 capacitive...0,8 inductive. Maximum efficiency 98,4%, European weighted efficiency 97,9%.

The DC input has 2 MPPT trackers and 4 string connections (max. 2 per MPPT), maximum voltage 1.100 V, MPPT range 200-1.000 V, start-up at 200 V, nominal voltage 600 V and full-load MPPT range 370-800 V. The maximum current is 30 A/MPPT with two strings (20 A with one string), 40 A short circuit, at a recommended PV power of 18.000 Wp (up to 40.000 Wp with SUN2000-450W-P optimisers).

It includes AI-assisted AFCI, string fault detection, residual current monitoring, type II SPD on DC and class II on AC, anti-islanding protection, AC overcurrent and DC reverse polarity protection, plus integrated PID recovery. IP66 enclosure with intelligent fan cooling, 21 kg, 546 x 460 x 228 mm, -25...+60 C, altitude up to 4.000 m. RS485 communication, WLAN/Ethernet via Smart Dongle-WLAN-FE and optional 4G, FusionSolar monitoring. Compliant with EN/IEC 62109-1/-2, VDE-AR-N 4105 and 4110, EN 50549, CEI 0-21, CEI 0-16, G99, IEC 61727/62116.