Active Cooling GoodWe ET G2 (ET-20) 24V DC

Basic cooling option for the new GoodWe ET G2 (ET-20) inverter model.
Cooling with a 24V thermostat that allows easy, tool-free installation.

A graph with our cooling efficiency measurements – (here). More customer measurements can be found via the links in the top menu of the website.

Compatible inverters:

GoodWe ET G2 (ET-20) series 6–15 kW (datasheet)

The package includes a high-quality 24V 1.2A power supply with a 2m cable. If needed, 1.5m or 4m extensions can be purchased.

Power supply: 24V DC (5.5×2.1), power supply min. 0.8A
Active cooling: 3 × Sunon 80 mm fans,
Vapo (MagLev), rated lifespan 70,000 hours,
noise level 33 dBa, total airflow 123 m³/h
Power consumption: Stand-by 0.5W, operation 6W
Material: structure manufactured using 3D printing

Function description:
The active cooling draws air in from the underside of the unit. Using it can reduce inverter operating temperature under load by 15–30 °C (depending on installation conditions). This prevents power derating on hot days and extends inverter lifespan. The thermostat is set by default to switch the cooling on at 40 °C and off at 35 °C on the inverter’s heat sink, where the sensor is placed.

Installation:
Installation is done by sliding the unit under the inverter and then bracing it between the inverter and the wall using extendable pins (video). The sensor is routed behind the inverter and placed on the middle fin. Removal is performed in the opposite order.

Setting the on/off temperature:

See the user manual.