A Q4 system is an electric sink that consumes electricity. In general there exist two different versions:
- on the one hand electronic loads that consume electrical energy by transforming it into heat (hot air, hot water)
- on the other hand recuperation systems(ReGen) that transform electrical energy back into electrical energy that is feeded back into the mains.
Typically Q4 systems are part of a bidirectional source and sink system, but there exists an increasing number of applications that demand for discharging functionality only.
The picture above shows a Q4 discharge system for a recycling company. It consists of a 50 kW / 125 A discharge unit to completely discharge batteries (during the recycling process). Control is provided by the Regatron software.