BATTERY ENERGY STORAGE SYSTEMS (BESS)
ACBOX V3/V4/V5 containerized LFP energy storage system up to 8.38 MWh / 3 MVA
Country: Italy · Model: ACBOX V3 / V4 / V5
A containerized BESS energy storage system on lithium iron phosphate (LFP) batteries, up to 3 MVA and 8.38 MWh in the ACBOX V4. A high-cube container holds the batteries, four-quadrant AC/DC conversion, liquid thermal management and safety equipment. Generations V3, V4 and V5 are available.
- Cell chemistry
- LFP
- ACBOX V4
- up to 3 MVA, up to 8.38 MWh, duration 2–8 h; cells 315 Ah 0.5P; racks 419.3 kWh (4 × 1P104S)
- ACBOX V5
- up to 1.91 MVA, up to 4.02 MWh, 2–8 h; cells 587 Ah 0.5P or 755 Ah 0.25P; 12-foot HC container, < 24–30 t
- Rack voltage
- 1164–1500 V DC
Technical specifications
| Cell chemistry | LFP |
|---|---|
| ACBOX V4 | up to 3 MVA, up to 8.38 MWh, duration 2–8 h; cells 315 Ah 0.5P; racks 419.3 kWh (4 × 1P104S) |
| ACBOX V5 | up to 1.91 MVA, up to 4.02 MWh, 2–8 h; cells 587 Ah 0.5P or 755 Ah 0.25P; 12-foot HC container, < 24–30 t |
| Rack voltage | 1164–1500 V DC |
| AC voltage | 690 / 730 V ±10 %, 50/60 Hz |
| Conversion | distributed four-quadrant SiC AC/DC converters (one per rack) |
| THDi | < 3 % at 25 % P |
| Cooling | built-in liquid (TMS) |
| Safety | aerosol fire suppression (up to 24 h autonomous), redundant protections |
| Grid | grid forming: virtual inertia and impedance, millisecond response; cybersecurity |
| Delivery set | external MV/LV transformer and MV switchgear supplied by the manufacturer |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
Each battery rack has its own independent converter, so energy output is maximal and the system stays ready. In generations V4 and V5 the converters are built on silicon carbide (SiC). Grid forming control implements virtual inertia, virtual impedance and a response within milliseconds, and cybersecurity is built in. Safety includes redundant protections and aerosol fire suppression, which works for up to 24 hours on a complete loss of external power. The set is completed by an external MV/LV transformer and MV switchgear, and control integrates with PMS/EMS. According to the manufacturer, 4.3 GW / 11 GWh of systems have been installed in 174 projects in 27 countries.
How to choose
The generation is selected by energy and size. The ACBOX V4 is rated for 3 MVA and 8.38 MWh with a discharge duration of 2–8 h, cells 315 Ah (0.5P), rack 419.3 kWh (4 × 1P104S), configurations of 12, 16 or 20 racks. The ACBOX V5 gives up to 1.91 MVA and 4.02 MWh in a 12-foot HC container weighing up to 24–30 t, cells 587 Ah (0.5P) or 755 Ah (0.25P), 4 racks of 781.4 or 1005 kWh each.
Request a price and lead time
ACBOX V3/V4/V5 containerized LFP energy storage system up to 8.38 MWh / 3 MVA. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What power does the ACBOX V5 deliver depending on discharge duration?
1.91 MVA for 2 h, 1.43 MVA for 3–4 h and 0.71 MVA for 8 h.
What are the rack voltage and the AC output voltage?
Racks are 1164–1500 V DC, the output is 690 or 730 V AC ±10 %, 50/60 Hz. THDi is below 3 % at 25 % power.
Is there a version for the USA?
For the USA, DC blocks of 5.031 MWh (12P416S, 1164–1497.6 V) are produced. The previous generation is called ACBOX V3.
What is the power factor of the ACBOX?
In the source data it is given as 'from 0 to 0', so the real cos φ limits should be checked in the datasheet. The system is intended for frequency control, integration of renewables, commercial and industrial storage and microgrids.
What happens to fire suppression when power is lost?
Aerosol fire suppression can work for up to 24 hours even on a complete loss of external power.
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Need a price, lead time or replacement?
Send us a request and we will confirm the configuration, lead time and delivery terms. We reply by email.