SolaX X3-Hybrid G4 PRO 15.0kW HV 3-Phase Hybrid Inverter

  
By SolaX
Minus Plus

Delivery available

More details Right

SolaX X3-Hybrid G4 PRO 15.0kW HV 3‑Phase Hybrid Inverter

  • 15kW three‑phase high‑voltage hybrid inverter for large commercial and industrial solar‑plus‑storage systems.
  • Three MPPTs, dual battery ports and microgrid / generator modes for flexible design and robust backup across three phases.
  • High efficiency, IP66 protection and comprehensive safety features for long‑term operation in demanding UK environments.

Brief description

The SolaX X3‑Hybrid G4 PRO 15.0kW is the top‑end model in the X3‑HYB G4 PRO three‑phase hybrid inverter range, designed to manage high‑power PV generation and high‑voltage lithium battery storage on a single platform. It delivers 15kW rated output with an ultra‑wide MPPT range of 110–950V, 20A DC input per MPPT and support for 200% PV oversizing, making it suitable for large modern arrays.

Dual battery ports with a 2‑in‑1 function provide flexible expansion and up to 50A charge / discharge current, while microgrid and generator modes support advanced backup or islanded operation. Smart scheduling, 7×24h time‑of‑use control and VPP readiness help sites use solar and storage efficiently under UK tariffs and demand patterns.

Key features

  • 15kW three‑phase hybrid inverter – Rated output apparent power 15000W and 15kVA EPS capability for large three‑phase loads.
  • High‑performance PV input – 30kWp recommended array power, three MPPTs, 20A per tracker and a 110–950V operating range with 200% PV oversizing.
  • Dual battery ports & 2‑in‑1 function – Two HV battery ports with up to 50A total charge / discharge capability using a splitter cable, supporting sizeable HS Series battery banks.
  • Robust three‑phase EPS – Up to 200% EPS output for 10s, 230 / 400V three‑phase EPS and UPS‑level switchover times below 10ms.
  • Smart management & safety – V2X‑ready, VPP‑ready, Type II SPD on AC and DC, optional Rapid Shutdown and optional AFCI, all in an IP66 enclosure.

Where to use this inverter

The X3‑Hybrid G4 PRO 15.0kW suits three‑phase sites with high demand and substantial PV capacity, such as logistics depots, warehouses, light‑industrial plants and larger commercial buildings. It is appropriate for behind‑the‑meter solar storage, demand‑shaving, backup for critical loads and microgrid applications where generator integration or complex load profiles need careful management.

Given its high‑voltage hybrid design, three‑phase EPS and advanced control functions, installation and commissioning must be carried out by qualified electricians familiar with SolaX equipment and UK standards such as G99. Energian can assist with system design and introduce trusted UK installers to deliver complete X3‑HYB G4 PRO projects.

Technical specifications 

PV input

  • Max. recommended PV array power: 30kWp (X3‑HYB‑15.0‑P).
  • Max. PV input voltage: 1000V DC (upper DC limit; higher voltages may damage the inverter).
  • Rated PV input voltage: 650V DC.
  • Operating voltage range: 110–950V DC.
  • Start‑up voltage: 120V DC.
  • No. of MPP trackers / strings per MPPT: 3 (1 / 1 / 1).
  • Max. input current per MPPT: 20 / 20 / 20A DC.
  • Max. input short‑circuit current per MPPT: 25 / 25 / 25A DC.
  • Series features: 20A DC input per MPPT with 3 trackers; 200% PV oversizing and up to 110% AC output; ultra‑wide MPPT range of 110–950V.

AC input & output (on‑grid)

  • Rated output apparent power: 15000W (AS 4777: 14999W).
  • Rated output current: 21.8A.
  • Max. output apparent power: 16500VA (AS 4777: 14999VA).
  • Max. output continuous current: 25.0A.
  • Rated AC voltage: 3W / N / PE, 220 / 380V AC; 3W / N / PE, 230 / 400V AC.
  • Max. AC input apparent power: 21.0kVA (for 10–15kW models).
  • Max. AC input current: 32A AC.
  • Rated AC frequency: 50 / 60Hz.
  • AC frequency range: 50 ± 5 / 60 ± 5Hz (may vary with country codes).
  • Adjustable power factor range: 1 (‑0.8 to 0.8).

Battery

  • Battery type: Lithium (HV batteries such as SolaX HS Series).
  • Battery voltage range: 120–800V DC.
  • Compatibility note: Compatible with a minimum of 3 HS Series batteries; if total voltage of 3 batteries is less than 127V and there is no PV input, the system cannot start up.
  • Max. charge / discharge current: 50A DC (25 × 2) / 30A DC (single port).
  • Dual battery ports and 2‑in‑1 function: If each of the two ports is connected to a separate battery, current is 25A per port; if one port is connected to a single battery, 30A; if both ports connect to a single battery via a 2‑in‑1 splitter cable (sold separately), 50A.

EPS (off‑grid) output with battery

  • Rated EPS apparent power: 15kVA (X3‑HYB‑15.0‑P).
  • Peak EPS output power: 2 × rated power for 10s (i.e. up to 30kVA for 15kW model).
  • Rated EPS output voltage and frequency: 230 / 400V AC, 50 / 60Hz.
  • Switchover time: less than 10ms (UPS‑level).

Efficiency

  • Max. efficiency: 98.0%.
  • European efficiency: 97.7%.
  • Efficiency curve (15kW): efficiency remains above 96% across most load range for typical DC bus voltages (330V, 650V, 800V).

Environment limit

  • Ingress protection: IP66.
  • Operating temperature range: −35 to +60°C (derating above 45°C).
  • Max. operating altitude: 3000m.
  • Relative humidity: 4–100% RH (condensing).
  • Overvoltage category: Mains: III; Battery: II; PV: II.

General

  • Dimensions (W × H × D): 560 × 503 × 210mm.
  • Net weight: 38kg.
  • Cooling concept: Natural cooling (lower power models) and smart air cooling (applies to higher group including 15kW).
  • Communication interfaces: RS485, CAN, DRM, DI/DO.
  • Power consumption (night): less than 5W.
  • Topology: Non‑isolated.
  • Certifications: IEC 62109‑1 / IEC 62109‑2, VDE 0126‑1‑1 A1:2012, VDE‑AR‑N 4105, G98, G99, AS 4777, EN 50549, CEI 0‑21.

Protection

  • Standard protections: Over / under voltage protection, DC isolation protection, DC reverse‑polarity protection, grid monitoring, DC injection monitoring, back‑feed current monitoring, residual current detection, over‑temperature protection, AC overcurrent protection, AC short‑circuit protection.
  • Surge protection: DC: Type II; AC: Type II.
  • Arc‑fault circuit interrupter (AFCI): Optional.
  • Optional Rapid Shutdown: Optional Rapid Shutdown function for enhanced safety (series feature).

Documents available for download

Shipping and support

Shipping is available to the UK, Ireland, Africa, the Caribbean and worldwide. If a shipping rate is not shown at checkout, please contact us on +44 20 8064 0335 or info@energian.co.uk for a quotation.

UK expert support is available – contact us with any questions or support requests via phone, email or live chat, or visit our office for an in‑person consultation about SolaX X3‑Hybrid G4 PRO inverters and wider commercial and industrial energy storage solutions.