Deye SUN-3/4K-G04P1-EU On-Grid Inverter

The Deye SUN-3/4K-G04P1-EU is a single-phase On-Grid inverter sized for Georgian residential rooftops where the goal is maximum kWh export and the shortest payback—not backup storage.

Tech Specs

Deye SUN-3/4K-G04P1-EU On-Grid Inverter — Tech Specs
Parameter	SUN-3K-G05P1-EU-CM1	SUN-3.6K-G05P1-EU-CM1
PV String Input Data
Max. PV Input Power(kW)	4.5	5.4
Max. PV Input Voltage(V)	550
Start-up Voltage(V)	50
MPPT voltage range(V)	40-500
Rated PV Input voltage(V)	360	360
Max. Operating PV Input Current (A)	20
Max. Input Short Circuit Current (A)	30
No. of MPP Trackers/No. of Strings MPP Tracker	1/1
MPPT Efficiency	>99%
Equipment Protection
DC Reverse Polarity Protection	Yes
AC Output Overcurrent Protection	Yes
AC Output Overvoltage Protection	Yes
AC Output Short Circuit Protection	Yes
Thermal Protection	Yes
Insulation Impedance Detection	Yes
DC Component Monitoring	Yes
Arc Fault Circuit Interrupter (AFCI)	Optional
Anti-islanding Protection	Yes
Residual Current Detection	Yes
Surge Protection Level	TYPE II(DC),TYPE II(AC)
DC Switch	Yes
Interface
LCD/LED display	LCD+LED
Communication Interface	RS485/RS232 /WiFi/LAN
General Data
Operating Temperature Range (°C)	-25 to +65℃, >45℃ Derating
Permissible Ambient Humidity	0~100%
Permissible Altitude (m)	2000m
Noise (dB)	≤ 35
Ingress Protection(IP) Rating	IP 65
Inverter Topology	Non-Isolated
Over Voltage Category	OVC II(DC),OVC III(AC)
Cabinet Size (WxHxD mm)	280mm254.5mm173mm（Excluding connectors and brackets）
Weight [kg]	5.7
Warranty	5 Years
Type Of Cooling	natural cooling
Grid Regulation	IEC 61727,IEC 62116,CEI 0-21,EN 50549,NRS 097,RD 140,UNE 217002,G98,G99,VDE-AR-N 4105
Safety EMC/Standard	IEC/EN 62109-1,IEC/EN 62109-2,IEC/EN 61000-6-1,IEC/EN 61000-6-2,IEC/EN 61000-6-3,IEC/EN 61000-6-4

On-Grid architecture deliberately excludes battery chemistry from the bill of materials. PV modules feed the inverter; surplus energy flows to the utility under net-metering rules while daytime load is covered locally. At 3–4 kW AC, this model matches typical home consumption profiles (B2C tariff ~0.24 ₾/kWh) and avoids the CAPEX multiplier of hybrid hardware when blackouts are acceptable or rare.

Two MPPT trackers allow split-array layouts—east/west roof faces or partial shading—without sacrificing harvest. Export limiting, reactive power control, and Wi-Fi/App monitoring are standard commissioning steps. Grid measurement is typically local to the inverter; extended meter runs (>30 m to the utility point) may require external RS485 or PLC metering—same discipline as hybrid systems, minus the DC battery plant.

For installers, the G04P1-EU series is the lightest integration path: AC coupling only, no BMS CAN, no SOC balancing. Pair with monocrystalline or bifacial modules sized to stay within inverter AC nameplate and grid connection limits issued by the distribution operator.

Ideal for

✓ Homeowners optimizing ROI under residential net metering
✓ Installers needing a proven single-phase Deye SKU with minimal commissioning complexity
✓ Properties with moderate daytime load and no requirement for island backup

Often added together

Technical FAQ

Does this inverter support batteries?

No. This is a pure On-Grid model. Storage requires a hybrid inverter (Deye SG03LP1 / SG04LP3 / SG01HP3 series) or an AC-coupled retrofit architecture.

What payback should a homeowner expect in Georgia?

Depends on self-consumption ratio, module cost, and tariff. On-Grid avoids battery CAPEX, often yielding the fastest simple payback when most generation is self-consumed or credited under net metering.

Can I upgrade to hybrid later?

Yes via AC Coupling: a hybrid inverter on the GEN port can govern an existing On-Grid string. Plan export limits and meter placement during the initial design.

Single-phase limits for larger homes?

Above ~4 kW AC or heavy three-phase loads, step up to three-phase On-Grid models (SUN-5…15K-G06 or higher) to balance phases and avoid neutral overload.

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