
BATTERY ENERGY STORAGE SYSTEMS (BESS)
PowerTitan 3.0 ST6900UX-4H — 20-ft BESS container, 6.9 MWh, with SiC PCS
Country: China · Model: PowerTitan 3.0 ST6900UX-4H
PowerTitan 3.0 is a 20-ft BESS container holding 6,904 kWh of LFP cells with built-in silicon carbide (SiC) converters. AC power is 4 × 450 kVA at 690 V with THDi below 1%, so current harmonics put almost no stress on the substation transformer. It comes in DC and AC versions for grid and generation projects.
- Capacity
- 6,904 kWh
- Cell chemistry
- LFP
- DC voltage
- 1,101.6–1,489.2 V
- AC power
- 4 × 450 kVA, 690 V, transformerless
Technical specifications
| Capacity | 6,904 kWh |
|---|---|
| Cell chemistry | LFP |
| DC voltage | 1,101.6–1,489.2 V |
| AC power | 4 × 450 kVA, 690 V, transformerless |
| THDi | < 1% |
| Protection rating | IP55, corrosion resistance C4 |
| Operating temperature | −30 to +45 °C, liquid cooling |
| Dimensions / weight | 6,058 × 2,896 × 2,438 mm, 55 t |
| Standards | UL 9540A, IEC 62619, IEC 62933-5-2, IEC 62477-1, IEC 62443-4-2 |
| Customs codes (for reference) | |
| HS code | 8507.60 |
| UKTZED code (Ukraine) | 8507600000 |
| CN code (EU) | 85076000 |
Specifications are taken from the manufacturer’s technical documentation. Updated . Customs codes are for reference only; the final code is determined at customs declaration for the specific model.
Description
The container ships pre-installed and already commissioned, so on site it goes onto the foundation and gets connected. Its converters support virtual inertia and grid voltage regulation, which helps a weak grid hold frequency and voltage. The design is transformerless with a 690 V output, so an external step-up transformer is needed to reach medium voltage. DC voltage is 1,101.6–1,489.2 V. Cooling is liquid, operating temperature −30 to +45 °C, and the enclosure is IP55 with C4 corrosion resistance. It measures 6,058 × 2,896 × 2,438 mm and weighs 55 t, which calls for a heavy tractor unit and a crane. The system complies with UL 9540A, IEC 62619, IEC 62933-5-2, IEC 62477-1 and IEC 62443-4-2, the last one covering control system cybersecurity.
How to choose
PowerTitan 3.0 is the pick when one site needs a lot of energy in the fewest containers. At 6,904 kWh it is denser than the PowerTitan 2.0 ST5015UX at 5,015 kWh in the same 6,058 × 2,896 × 2,438 mm footprint. If the project is built on a central PCS with a 4,000 kVA transformer, the ST2236UX battery container at 2,236 kWh paired with an SC4000UD-MV fits better. Commercial sites at 125 kW are served by the PowerStack 255CS cabinet.
Request a price and lead time
PowerTitan 3.0 ST6900UX-4H — 20-ft BESS container, 6.9 MWh, with SiC PCS. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What is the capacity of the PowerTitan 3.0 ST6900UX-4H?
6,904 kWh in a single 20-ft container.
What is the AC power of the ST6900UX-4H?
4 × 450 kVA at 690 V, transformerless.
How much does the PowerTitan 3.0 container weigh?
55 t at 6,058 × 2,896 × 2,438 mm.
Does the ST6900UX-4H need a transformer for grid connection?
The converters are transformerless with a 690 V output, so a medium-voltage connection needs an external step-up transformer.
What temperature range does PowerTitan 3.0 operate in?
−30 to +45 °C with liquid cooling, in an IP55 enclosure with C4 corrosion resistance.
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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.



