On a 5 kW inverter, running a 1.8 kW heat pump compressor alongside domestic baseline loads leaves very little surplus solar power to recharge batteries. The GW6.5K-ET delivers 7,200 VA maximum apparent power, giving all-electric homes the exact throughput needed.

• Delivers 10.5 A continuous AC output current per phase to handle simultaneous kitchen and compressor loads.
• 150% DC oversizing channels surplus solar directly into battery storage at up to 25 A continuous DC rate.
• Symmetrical three-phase power export eliminates phase-imbalance penalties under European grid standards.

Phase

3

AC power

6.5 kW

Product role

PV inverter for battery-ready residential or commercial project review

Max. Input Power (W)

9.7 kW

Max PV input

9.7 kW

Battery voltage range

180-600V

Max efficiency

98.00%

IP rating

IP66

Packaging (VPE)

6 per pallet

Ingress protection

IP66

Operating temperature

-35 to +60 °C

Dimensions

415 × 516 × 180 mm

Weight

24 kg

When rooftop solar exceeds 7 kWp and the home operates a heat pump. On a 5 kW inverter, running a 1.8 kW heat pump compressor alongside domestic baseline loads (0.5 kW) leaves only ~2.7 kW of remaining DC throughput for battery charging during midday. On partly cloudy spring or autumn days, a 10 kWh battery bank will not reach 100% state of charge. The GW6.5K-ET provides 9,700 W PV intake and 7,200 VA maximum apparent power, providing the exact headroom needed to heat the home and fully charge storage before sunset.

10.5 A max output current; 16 A or 20 A 3-pole MCB. * Nominal Output Current: Approx. 9.5 A per phase at 400 V three-phase. * Maximum Output Current: 10.5 A per phase (7,200 VA apparent power limit). * Maximum Grid Input Current: 15.2 A per phase (allows simultaneous battery fast-charging and backup load pass-through). * Breaker Recommendation: A standard 3-pole 16 A or 20 A (Type B or C) miniature circuit breaker (MCB) on the main AC distribution board.

Yes, and higher stack voltages actually improve system efficiency. The GW6.5K-ET operates across a wide 180–600 V DC battery window. * Pairing it with a 3-module GoodWe Lynx Home F tower (9.83 kWh / 307.2 V) or a 4-module tower (13.10 kWh / 409.6 V) places the DC-DC converter in its peak efficiency curve. * Higher operating voltages reduce current stress and resistive heat dissipation during continuous 25 A charge and discharge cycles.

Consult local grid code; external contactor may be required for TT/TN-S systems. In standard on-grid mode, the neutral (N) is bonded at the main service panel. During off-grid backup operation, European electrical standards (such as in Germany, Austria, and Switzerland) may require a dedicated external contactor to maintain compliant neutral earthing depending on whether your backup sub-panel operates as a TN-S or TT system. Consult your installer regarding compliant off-grid earthing arrangements.

Check short-circuit current (Isc ≤ 15.2 A). The GW6.5K-ET features a maximum input current of 12.5 A per MPPT with a maximum short-circuit current ($I_{\text{sc}}$) limit of 15.2 A. * Standard 400W–450W Panels ($I_{\text{mp}} \approx 10\text{. }11\text{ A}, I_{\text{sc}} \approx 11\text{. }12\text{ A}$): Fully compatible with zero current clipping. * Large-Format 500W+ Panels ($I_{\text{mp}} \approx 13\text{. }14\text{ A}, I_{\text{sc}} \approx 14\text{. }15\text{ A}$): Compatible, provided $I_{\text{sc}}$ stays under 15.2 A at STC. * Ultra-High-Current 600W+ Panels ($I_{\text{mp}} > 15\text{ A}$): Step up to the GW15K-ET (which features 30 A MPPT inputs).