ESS HVL 250kW+522kWh Integrated Solar & Storage System
At a glance
ESS HVL 250kW+522kWh Integrated Solar & Storage System pairs a 250kW grid-tied inverter with 522kWh LiFePO₄ storage; MPPT window 150V~950V, transfer to island within ≤10ms, liquid cooling and IP54. It serves PV self-consumption, peak shaving and critical-load backup in parks and distribution areas.
Key Features
- Rated power 250kW with 522kWh LiFePO₄ storage
- On/off-grid transfer within ≤10ms
- MPPT window 150V~950V, max. DC input 250kW×2
- All-in-one cabinet build, liquid cooling, IP54 enclosure
- CAN / RS485 monitoring with EMS interface
Product Description
The ESS HVL series integrates the PV inverter, the liquid cooling LiFePO₄ battery and the on/off-grid transfer unit in a single cabinet — covering self-consumption, peak shaving and backup power. Wiring and commissioning are done inside the cabinet, so site work is limited to positioning and paralleling.
The ESS HVL 250kW+522kWh runs at 832VDC with roughly 522kWh usable, measures 1370×1950×2200mm and weighs about 4200kg. Each cabinet is wired, insulation-tested and function-tested before shipment, so it can be specified and ordered once the load list and local grid requirements are confirmed.
- Rated power 250kW with 522kWh LiFePO₄ storage
- On/off-grid transfer within ≤10ms
- MPPT window 150V~950V, max. DC input 250kW×2
- All-in-one cabinet build, liquid cooling, IP54 enclosure
Specifications
| Max. PV power | 250kW×2 |
|---|---|
| Max. PV voltage | 1000V |
| PV startup voltage | 180V |
| MPPT voltage range | 150V~950V |
| Max. PV current | 2×10×42A |
| Rated power (on-grid) | 125kW×2 |
| Rated current (on-grid) | 180.4A×2 |
| Rated voltage | 3/N/PE, 220V / 380V, 230V / 400V |
| Voltage range | -15%~+15% |
| Frequency range | 50Hz / 60Hz |
| Current harmonics | <3% |
| Power factor | -1~1 |
| Rated output power (off-grid) | 125kW×2 |
| Max. output power (off-grid) | 220kVA |
| Max. output current (off-grid) | 180.4A×2 |
| Unbalanced load | 100% |
| Overload | 1.6 倍额定功率 10s；2 倍额定功率 200ms |
| Battery type | LiFePO₄ 磷酸铁锂 |
| Number of modules | 10 |
| Series-parallel connection | 2×1P260S |
| Rated capacity | 314Ah |
| Max. charge/discharge current | 157A |
| Nominal voltage | 832VDC |
| Voltage range | 754~936VDC |
| Rated energy | 522kWh |
| On/off-grid switching time | ≤10ms |
| Protection level | IP54 |
| Operating temperature | 充电 0℃~+55℃；放电 -20℃~+55℃ |
| Humidity | 5~95%RH（无凝露） |
| Cooling method | 液冷 Liquid cooling |
| Max. operating altitude | <4000m（2000m 以上降额） |
| Dimensions (L×W×H) | 1370×1950×2200mm |
| Weight | 4200kg |
Product FAQ
What does the ESS HVL 250kW+522kWh system solve?
It bundles the PV inverter, battery and on/off-grid transfer into one cabinet, addressing four pain points: weak self-consumption, peak-valley arbitrage, limited transformer capacity and backup for critical loads — with far less site integration work.
How are critical loads protected during an outage?
The built-in transfer unit switches in ≤10ms; off-grid output is 125kW×2 with 100% unbalanced-load capability.
Can units be paralleled or the battery extended?
Yes, both parallel operation and battery extension are supported. The number of parallel units depends on busbar rating, protective devices and the local grid-connection permit, and is confirmed in the project single-line diagram.
How should the PV array be sized?
The MPPT window is 150V~950V with 250kW×2 maximum DC input; string open-circuit voltage must stay below 1000V.
Lead time and customisation?
Standard batches ship in 15-30 days; volume orders and customised models follow the contract. Appearance, protocols, grid-compliance packages and monitoring-platform interfaces can be adapted.
Not sure this is the right specification?
Send us your drawing, data sheet or sample and our engineers will confirm the match within 48 hours.
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