Description
Growatt WIT 15K-HU is a 15kW three-phase hybrid inverter engineered for residential homes, villas, and small commercial installations that demand serious power, fast backup, and long-term reliability. Built on Growatt’s WIT platform, it combines a high-yield MPPT solar charge controller, grid-tied inverter, and UPS-grade backup function into a single, natural-convection-cooled unit — meaning fully silent operation with no fans.
With a 1.6 DC/AC ratio and support for up to 24kW of PV input, the WIT 15K-HU is built to maximize harvest from modern high-power solar modules, even in constrained roof space. Its dual MPPT trackers support string currents up to 20A each across a wide 150–850VDC voltage range, giving installers flexibility across panel layouts and orientations. Paired with Growatt’s 48V low-voltage battery ecosystem — including AXE LiFePO4 batteries — the inverter delivers a maximum charge/discharge current of 290A for fast, efficient energy storage cycling.
When the grid goes down, the WIT 15K-HU switches to backup power in as little as 10ms, and uniquely supports 100% unbalanced output across all three phases — meaning it can deliver full rated power to a single phase when your loads demand it. A 110% continuous AC overload rating adds further headroom for demanding equipment and motor start-up loads. The inverter also includes black start capability, smart load control, AFCI arc-fault protection, and MODBUS TCP connectivity for integration with building energy management systems.
Rated IP66 for indoor and outdoor mounting, and scalable via parallel connection of up to 6 units for a combined output of 90kW, the WIT 15K-HU is a future-proof choice for installers designing systems that need to grow. Remote monitoring is available through Growatt’s ShineWiFi/ShineWiLAN dataloggers and the global Growatt Monitoring Platform, giving full visibility into production, storage, and consumption in real time.
Key Features
- 15kW three-phase AC output — full power for residential and light commercial loads
- Up to 24kW max PV input power — 1.6 DC/AC ratio maximizes harvest from oversized arrays
- Dual MPPT trackers, 150–850VDC range — max 20A per string for flexible panel layouts
- 48V low-voltage battery compatible — optimized for Growatt AXE LiFePO4 batteries
- 290A max charge/discharge current — fast, efficient battery cycling
- 10ms UPS backup switching — near-instant transition to off-grid power on outage
- 100% unbalanced 3-phase output — full rated power available on any single phase
- 110% continuous AC overload capacity — handles demanding loads and motor start-up
- Black start & smart load control — restarts system without grid or battery power present
- Parallel expansion up to 6 units (90kW) — scalable for growing energy needs
- IP66 protection rating — safe for indoor and outdoor installation
- Silent natural convection cooling — no fans, no operational noise
- AFCI arc-fault protection & MODBUS TCP — enhanced safety and system integration
- Remote monitoring — ShineWiFi/ShineWiLAN + Growatt Monitoring Platform
Technical Data Table
