Solis solar kit 7.08kWp – S6-GR1P6K 6kW single-phase string inverter7.08kWp residential on-grid kit with 6kW single-phase inverter and protection box

Overview

A grid-tied home kit: 7.08kWp of PV with the Solis S6-GR1P6K single-phase string inverter and a DC and AC protection box. The 6kW inverter has two MPPTs with one string each, a 90–520V tracking range and 600V maximum input, and Solis recommends up to 9kW of PV, so the array is well within range. Arc-fault protection is integrated (activation required), export power control is supported and the IP66 housing is naturally cooled. No battery input.

• Solis string inverter with matched PV module set
• Single-phase 3kW or three-phase 25kW
• IP66 outdoor enclosures
• Export power control supported
• CEI 0-21, EN 50549-1 and VDE-AR-N 4105 listed
• Optional WiFi or GPRS logger for SolisCloud

What's in the kit

• 1 × Solis S6-GR1P6K
• null × PV modules, 7.08kWp in total
• 1 × DC and AC protection box

System overview

These kits are plain grid-tied systems: PV modules feed a Solis string inverter that supplies the building's loads and exports any surplus. There is no battery input, which keeps the system simple and inexpensive for daytime self-consumption. The residential kit pairs 3.54kWp with the single-phase S6-GR1P3K-M; the commercial kit pairs 31.86kWp with the three-phase S5-GC25K, both within the recommended maximum PV power that Solis publishes.

Inverter data

The S6-GR1P3K-M has one MPPT for up to two strings, an 80–500V MPPT range, 550V maximum input voltage and 19A input current, and delivers 3kW and 3.3kVA at 220/230V. The S5-GC25K has three MPPTs for two strings each at 32A, a 200–1000V MPPT range and 1100V maximum input voltage, and delivers 25kW, 27.5kVA at 230/400V with 98.5% maximum efficiency. Both are IP66 and work from -25…+60°C.

Protection and grid compliance

Solis lists DC reverse polarity, short-circuit, output overcurrent and anti-islanding protection and grid monitoring on both inverters. AFCI is optional on the S6-GR1P3K-M and integrated, with activation required, on the S5-GC25K. The S5-GC25K adds Type II surge protection on DC and AC, string monitoring and I-V curve scanning, and an optional night-time PID recovery. Grid standards in the datasheets include CEI 0-21, EN 50549-1, VDE-AR-N 4105/VDE V 0124, G99 and C10/11.

What the installer adds

The installer provides mounting structures, DC cabling and any string protection, AC cabling with breaker and residual-current device, and an export meter where the site needs power limitation. Communication is RS485 as standard, with optional WiFi or GPRS loggers for remote monitoring and firmware upgrades through SolisCloud. A grid connection request to the local operator is required before commissioning.

Questions and answers