© 2021 by XOLTA
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2.4 Key specifications
Key specification parameters of the XOLTA outdoor BESS are shown in the following table.
Table 2.1:
Key specifications
for BAT-79
3 XOLTA BATTERY ENERGY STORAGE SYSTEM:
This part of the manual describes the installation and electrical connection of the XOLTA outdoor BESS
3.1 Delivery inspection
Each XOLTA outdoor BESS is delivered as a fully assembled cabinet on a single pallet. It has been carefully
checked and tested prior to shipping. However, upon delivery, you should verify visually the state of packaging
to make sure that it is in good condition. In case of any visual damage to the packaging, report it to XOLTA support.
3.2 Location requirements
• The XOLTA outdoor BESS is intended for outdoor use and is protected up to IP55;
• The ambient temperature in the installation place should be in the range of from -25 to m35°C.
The temperature range can be expanded with active cooling. Please observe data sheet specifications.
• The system should not be immersed in water or exposed to high temperatures, flames or physical force;
• No object should be placed on the top of the cabinet or within 0.5m of the top of cabinet;
• The battery cabinets should be permanently fixed to the ground. Moving the assembled battery racks is
strictly prohibited as this can damage the rack structure or the battery packs;
• All XOLTA outdoor BESS racks should be placed vertically and safely secured to the rack base and the
underlying foundation.
TECHNICAL PROPERTIES
Power (charge/discharge)
30 kW standard, up to 80 kW
Nominal energy
79 kWh
Battery chemistry
Li-ion NMC
Nominal battery voltage
700V DC
Battery voltage range
614-797 V DC
Grid connection voltage*
3 x 400V AC
Battery system efficiency**
96,6%
Cooling standard
Forced air cooling via heat exchanger (ambient temperature -25°C to 35°C)
Cooling active - optional
Cooled by air conditioner (ambient temperature -25°C to 45°C)
Parallel coupling
Ability to couple multiple racks in parallel
Cabinet
Coated, vandal resilient steel enclosure
Dimensions
D723mm x W846mm x H2180mm
Weight
1,083 kg. per rack
CE: Safety, health and environment
UN38.3 classification for safe transportation
EN 61010-1: 2010 + A1: 2016 – safety req. battery systems
Standards
EN 62477-1 (2012) safety req. for converters
EN 61439-1 (2011) inverter general construction and safety
EN/IEC 61000-6-2, industrial level – inverter EMC immunity
EN/ IEC 61000-6-4, class A – inverter EMC emission
Protection rating
IP55
Expected life time
15 years
Performance warranty
10 years / 70%
*Higher voltage levels feasible with transformer, **100% DoD, 15kW round-trip efficiency at 25°C
