GoodWe ET PLUS+ GW8K-ET 8 kW Three-Phase Hybrid Solar Inverter

The GoodWe ET PLUS+ 8 kW Inverter (GW8K-ET) is a high-voltage three-phase hybrid inverter designed to maximize self-consumption and ensure service continuity. It features UPS-type backup with switching <10 ms, allows 100% unbalanced output between phases, and offers high efficiency with fanless electronics (natural convection) in an IP66 outdoor-rated enclosure.

Applications and Advantages

• Self-consumption with HV battery: prioritizes loads, charges the battery, and exports surplus according to regulations.
• Instant backup: backup mode with switching <10 ms for sensitive loads.
• Flexibility: 100% unbalanced output in 3-phase to optimize phases with different demands.
• DC oversizing: up to ~150% compared to AC power (12 kW DC max recommended).
• Outdoor installation: IP66 and natural convection cooling, no fans.

PV Input

• Max PV power: 12,000 W.
• Max DC voltage: 1000 V (start 180 V; nominal 620 V).
• MPPT window: 200–850 V.
• MPPT trackers / strings: 2 MPPT, 1 string per MPPT.
• Current per MPPT: 12.5 A (Isc max 15.2 A).

Battery (HV)

• Type: High-voltage Li-Ion (nominal 500 V).
• Voltage range: 180–600 V.
• Continuous charge/discharge: 25 A.
• Max charge power: 9.6 kW.
• Max discharge power: 9.6 kW.
• BMS communication: CAN / RS485 (see manufacturer’s approved battery list).

AC Output to Grid (on-grid)

• Nominal power: 8,000 W (8,800 VA max depending on grid).
• Voltage: 400/380 V, 3L/N/PE.
• Frequency: 50/60 Hz (45–65 Hz).
• Max grid current: 13.5 A.
• Power factor: ~1 (adjustable 0.8 inductive–0.8 capacitive).
• THD: <3%.

Backup Output

• Nominal apparent power: 8,000 VA.
• Max power without grid: 16,000 VA (60 s; requires sufficient PV/battery input).
• Switching: <10 ms (UPS level).
• THDv: <3% (linear load).

Efficiencies

• Max efficiency: 98.2%.
• European efficiency: 97.5%.
• Battery → AC: up to 97.5%.

Communications and Monitoring

• Portal/app: Integrated Wi-Fi; LED interface and app.
• Metering: RS485 for external meter.
• Battery BMS: CAN / RS485.

Protections and Safety

• Integrated PV insulation resistance monitor and RCMU.
• Anti-islanding, AC overcurrent, AC short circuit, and AC overvoltage.
• SPD: Type II on DC and Type III on AC.
• Integrated DC isolator and remote shutdown.
• Protection rating: IP66.

Design and Installation

• Cooling: natural convection (no fans).
• Nighttime consumption: <15 W.
• Mounting: wall-mounted.

Dimensions and Weight

• Dimensions (W × H × D): 415 × 516 × 180 mm.
• Weight: 24 kg.

Environment

• Operating temperature: −35 to +60 °C.
• Humidity: 0–95% (non-condensing).
• Max altitude: 4,000 m.

Compatibility and Notes

• Compatible with GoodWe-approved HV batteries. See official list to ensure BMS and firmware compatibility.
• Peak backup power requires sufficient available PV/battery power.
• Power and VA parameters depend on local grid connection regulations.

Technical information based on official manufacturer documentation. Subject to change without notice.