Function, Scope Of Supply And Technical Parameters; Function - Varta element 3 Instruction Manual

3 Function, scope of supply and technical
parameters
3.1

Function

The VARTA element 3 / element 6 system is a battery storage
system for operation in a 3-phase building grid, which offers the
option of connecting a separate grid-connected photovoltaic
system. This must be a generating unit which supplies to surplus
rather than to full feed. There is also provision for storing
renewable energy, for example from small wind turbines or other
CHP system energy sources.
The VATRA element 3/6 system increases the rate of own
consumption and the economy of the photovoltaic system. Any
power produced by the photovoltaic system that is not required
for immediate use can be buffered in the energy storage system.
The storage system feeds the power back to the building system
as soon as consumption once again exceeds the amount of
power generated by the photovoltaic system.
The VATRA element 3/6 system is connected to the building
system as an alternating, 3-phase current, and operates
independently of the photovoltaic system. A current sensor
controls the charge and discharge processes of the energy
storage system. This current sensor is mounted in the fuse box
immediately behind the consumption/feed meter and measures all
incoming and outgoing currents.
If this current sensor measures outgoing currents when the
energy storage system has free charge capacity, the system will
be charged. During this process, the battery inverter located in
the VARTA element 3 / element 6 system converts the alternating
current into direct current, and charges the battery modules. Once
the maximum charge capacity is reached or when the solar-
18 Subject to alteration! Updated 11/2015