20kV 5MW Load Bank for Finnish Wind Grid Balancing

Application: Wind energy power grid balancing

Site: Tampere Finland

Time: July 2025

Deyang Rata Technology Co., Ltd., a load bank expert in China, partnered with a Finnish client to deliver a 5000kW 20kV resistive load bank, tailor-made for wind energy power grid balancing in Tampere, Finland.

Deyang Rata Technology Co., Ltd., a top 5 load bank expert in China, partnered with a Finnish client to deliver a 5000kW 20kV resistive load bank, tailor-made for wind energy power grid balancing in Tampere, Finland.

This containerized load bank, integrated with a wind chimney design, features a rated power capacity of 5000kW at PF 1.0 and operates at 20kVac with 50Hz frequency.  Its load step resolution of 1000kW (configured as 1000kW+1000kW+1000kW+2000kW) ensures precise grid balancing, while the vertical upwards forced cooling system—powered by 18 fans (4kW each) with an approximate airflow of 2700 CMM—guarantees stable performance even in extreme temperatures ranging from -20°C to +50°C.

The load bank was also strictly tested under 25kV phase to ground withstand voltage.  to ensure the insulation is preperly done in the structure.

Constructed with marine-grade painted carbon steel, the enclosure boasts an IP54 rating for outdoor use, adapting to the local climate and altitude (≤2000 m.a.s.l.).  Safety is prioritized through thermal emergency cut-out, fan overload protection, and an emergency stop function, complemented by a manual control panel for easy operation.

From factory acceptance to on-site installation, Rata's comprehensive support ensured seamless deployment. This solution not only meets the client's grid balancing needs but also underscores Rata's capability in delivering customized, reliable load bank systems for renewable energy applications worldwide.