21
3.9.1
Battery module
VKB number
56462705099
Electrochemistry cell
Li-ions
Nominal module capacity
6.5 kWh
Discharge depth
90%
Useful module capacity
5.9 kWh
Connection
contact-safe
Cell monitoring
integrated
Dimensions in mm (W x H x D)
445 x 110 x 587
Weight
45 kg
Packaging in mm (W x H x D)
800 x 460 x 600
3.9.2
Environmental rating
Environmental category
Air-conditioned in inner rooms*
Classification of the wet rooms
No wet rooms allowed
Soiling grade
2
Ingress protection
IP22
Typical/max. Noise emission
42 dBA / 49 dBA
Ambient temperature
+5 °C to +30 °C
Relative humidity
< 80%
Max. altitude
2000 m above sea level
Overvoltage category
III
Protection class
1
* The energy storage system is fully enclosed by a building and/or housing. Thus the energy storage
system is protected from sun, dust and other external influences. Additionally, the building and/or housing
is air-conditioned with regard to temperature, humidity and air filtering.
3.10
Derating
Derating means a temporary curtailment of the maximum performance of the battery converter in order to
prevent components from being heated excessively. VARTA energy storage systems are designed in such a way
that when the operating and environmental conditions are complied with the permitted operating temperature
is not exceeded and a derating is not necessary. To avoid a temperature derating of the energy store, you should
ensure that the energy store can issue the heat to the ambient air.
Frequent temperature-induced derating can have the following causes:
•
The system cannot issue enough heat to the ambient air because the air filters are soiled or have
failed.
•
The installation site of the energy store does not offer the requisite climatic conditions.
•
Atypical operation that deviates heavily from the photovoltaic cycle.
