FoxESS solar kit 7.67kWp – T6-G3 6kW three-phase string inverter7.67kWp on-grid kit with 6kW three-phase inverter and protection boxes

Overview

A residential three-phase kit with a 7.67kWp PV array, the FoxESS T6-G3 string inverter and DC and AC protection boxes. The T6-G3 delivers 6kW and 6.6kVA and accepts up to 9kW of PV on two MPPTs with one string each. Its natural-convection cooling keeps noise below 30dB, which suits installation near living areas. Export limitation is possible through the meter port, and monitoring runs on FoxCloud.

• FoxESS T6-G3, T12-G3 or T17-G3 string inverter
• Two MPPTs, 140–1000V operating range, 140V start-up
• 98.6% maximum and 97.8% European efficiency
• IP65, -25…+60°C, Type II DC/AC surge protection
• CEI 0-21, EN 50549-1 and VDE-AR-N 4105 listed
• WiFi or 4G monitoring through FoxCloud

What's in the kit

• 1 × FoxESS T6-G3
• null × PV modules, 7.67kWp in total
• null × DC and AC protection boxes

System overview

These kits combine a FoxESS T Series (G3) three-phase string inverter with a PV array sized above the inverter's AC rating and within FoxESS' maximum input power. Energy is used directly by the building and the surplus is exported, or limited with a meter. There is no battery input. The residential 7.67kWp kit also includes DC and AC protection boxes; the 14.16kWp and 21.24kWp kits target small commercial roofs.

Inverter data

All T-G3 models accept up to 1100V DC, start at 140V and track between 140 and 1000V on two independent MPPTs. The T6-G3 and T12-G3 take one string per MPPT at 14A; the T17-G3 takes two strings per MPPT at 28A. Maximum PV input power is 9kW, 18kW and 25.5kW respectively. FoxESS quotes 98.6% maximum efficiency, 97.8% European efficiency and 99.8% MPPT efficiency for the whole range.

Protection and compliance

Insulation monitoring, residual current monitoring, DC reverse polarity, anti-islanding and AC short-circuit, overcurrent and overvoltage protection are built in, with Type II surge protection on DC and AC. The DC switch and AFCI are optional. FoxESS lists CEI 0-21, EN 50549-1, VDE-AR-N 4105, C10/11, RD 1699 and other grid regulations, plus EN 62109-1/2 for safety.

Installation and monitoring

The enclosure measures 370×480×183.5mm, is rated IP65 and weighs 17kg (T6, T12) or 20kg (T17). Models up to 12kW are cooled by natural convection and stay below 30dB; the T17-G3 uses a fan. Monitoring uses a WiFi or optional 4G module with FoxCloud, and the RS485, meter, DRM and emergency-stop ports allow export control. The installer adds mounting, cabling, protections where not supplied, and the grid connection paperwork.

Questions and answers