125 kW 3-Phase HV Hybrid Inverter + Dyness Battery Package
125 kW 3-Phase HV Hybrid Inverter + Dyness Battery Package
125 kW three-phase high-voltage hybrid inverter with Dyness STACK280 lithium battery storage. A ready-specified solar-and-storage core for large commercial and industrial sites: it connects your solar array, the grid and a battery bank behind one inverter, and keeps essential loads running when the grid fails.
What is in the package
- 1 × 125 kW three-phase high-voltage hybrid inverter (tier-1 brand; Solis or Deye, confirmed on order)
- Dyness STACK280 (S51280) lithium iron phosphate battery modules — quantity depends on the option you choose
- Dyness SBDU200 battery distribution unit and base for each battery stack
This is an equipment-only package. Solar panels, mounting, cabling, protection and installation are not included — see below.
Choose your battery size
| Option | Battery bank | Usable energy | Max continuous battery output* |
|---|---|---|---|
| 1-hour storage (energy for at least 1 h of rated inverter output) | 10 × STACK280 modules in one stack (512 V nominal) | 136.2 kWh | approx. 71 kW |
| 2-hour storage (energy for at least 2 h of rated inverter output) | 20 × STACK280 modules as 2 matched stacks of 10 (512 V nominal each) | 272.4 kWh | approx. 102 kW |
*The battery bank sets the continuous backup power when running from battery alone. The inverter can deliver up to its full 125 kW AC rating whenever solar or the grid supplements the battery.
Indicative backup time
| Option | Load | Approx. run time from battery |
|---|---|---|
| 1-hour | 10 kW | 12.3 hours |
| 1-hour | 71 kW | 1.7 hours |
| 2-hour | 10 kW | 24.5 hours |
| 2-hour | 102 kW | 2.4 hours |
Run times assume a full battery and about 10% conversion and standby losses. Actual time depends on your load and battery state of charge.
Inverter specifications
| Rated AC output | 125 kW, three-phase 400 V, 50 Hz |
| Backup (off-grid) output | Up to 125 kW rated, with automatic changeover on grid failure (battery-limited as above) |
| Topology | Transformerless, high-voltage battery input |
| Max. DC input voltage | 1000 V |
| MPPT voltage range | 150–850 V |
| Solar inputs | 10 MPPT inputs, up to 20 strings |
| Protection rating | IP65 or better (outdoor rated) |
| Communication | CAN and RS485 to battery; Ethernet / Wi-Fi monitoring (module may be required) |
| Warranty | 5-year manufacturer's inverter warranty |
Battery specifications — Dyness STACK280 (S51280)
| Chemistry | Lithium iron phosphate (LiFePO4) |
| Module | 51.2 V, 280 Ah, 14.336 kWh nominal |
| Usable energy per module | 13.62 kWh (95% depth of discharge) |
| Recommended continuous current | 140 A per stack (0.5C); up to 200 A maximum continuous |
| Cycle life | 8 000 cycles or more |
| Operating temperature | Charge 0 to 50 °C; discharge −20 to 50 °C |
| Installation | IP20 — indoors or in a weather-protected enclosure |
| Communication | CAN / RS485 |
| Warranty | 10-year manufacturer's battery warranty (conditions apply) |
Solar and installation
The inverter accepts a solar array sized to your roof and load, typically about 1.0 to 1.3 times its rated power. We design the string layout for the inverter supplied and confirm it before anything is ordered.
Not included in this package
- Solar panels, mounting structure and DC cabling
- AC distribution board, protection, surge protection and earthing
- Installation, commissioning, Certificate of Compliance and municipal registration
- Freight and delivery (quoted separately for the weight of the battery modules)
Want it installed? Ask us for a full turnkey quote: we design, supply, install and commission the complete system, and the package price here is carried into the turnkey quote.
Large systems need municipal or utility approval before they are switched on, and plant above 100 kVA has additional utility requirements. We handle the application as part of our design service.
Frequently asked questions
Which inverter brand will I receive? A tier-1 high-voltage hybrid inverter from either Solis or Deye, depending on stock. Both meet the specifications above and the brand is confirmed on your order.
Can I add more batteries later? Yes, within the limits of the inverter and the stack (up to 15 modules per stack). Contact us so we can check the bank voltage and battery current for your inverter.
Does the price include VAT? Yes. Prices shown include 15% VAT.
Is this a complete solar system? No. It is the inverter and battery core. Panels, installation and the rest of the balance of system are quoted separately as a turnkey service.
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