PQvar™ is a modular static var generator for active stepless power factor correction and load balancing in industrial grids and large commercial buildings. With a fast response time of < 15 ms and a dynamic reaction time of < 50 µs PQvar allows significantly faster compensation than conventional systems. It can reach a power factor of 0.99. PQvar is suitable for active compensation of both inductive and capacitive loads. At low-voltage level PQvar is designed for 400 V and 690 V supply systems. In these voltage classes individual modules with outputs of between 30 and 200 kvar are available as well as systems for up to 880 kvar per compensation cabinet.
Using Advanced Multi Controllers (AMC) the PQvar system can be combined with conventional passive low-voltage compensation stages. The medium-voltage level is covered by systems for 6 kV, 10 kV and 35 kV, the modules are designed for outputs of between 2000 and 12,000 kvar. All modules are available for 3-phase grids with or without neutral conductors. Depending on output and size, the modules are designed as slide-in units for control cabinets and systems for wall mounting (low-voltage) or as control cabinet systems (medium-voltage).