THREE-PHASE LOW-VOLTAGE HYBRID INVERTER
Deye SUN-20K-SG05LP3-EU-SM2 20kW Hybrid Inverter
A three-phase 20kW hybrid inverter for distributors, installers and EPC teams designing 48V-class solar-plus-storage systems. The two battery inputs and high DC current capability make battery-bank engineering, cable sizing and communication approval essential parts of the quote.
- 20kW three-phase
- 40–60V battery range
- Two battery inputs
- On-grid and off-grid operation
Project fit
For Higher-Power Low-Voltage Hybrid Projects
This model fills the gap above the smaller 3–12kW low-voltage hybrid series. It is a project inverter, not a drop-in answer for every 48V battery bank.
Three-phase solar plus storage
For 20kW-class projects where the destination grid standard, backup loads, meter arrangement and export-control method are known.
AC-coupled retrofit
Deye lists AC coupling support for upgrading an existing solar system, subject to the existing inverter, protection and control architecture.
Generator-supported systems
Generator energy-storage operation is supported, but generator size, control signal, neutral/earthing and transfer logic must be engineered for the site.
Verified product data
SUN-20K-SG05LP3-EU-SM2 Technical Data
These values are taken from the current Deye model-family datasheet. Country approval, warranty route and supplied accessories still depend on the destination and sales channel.
| Battery type / voltage | Lead-acid or lithium-ion; 40–60V battery operating range |
|---|---|
| Battery input | Two battery inputs; maximum charge/discharge current 350A |
| Rated AC output | 20,000W rated active power; 22,000VA maximum apparent power |
| PV input | 40,000W maximum PV access; 32,000W maximum PV input power |
| PV voltage / MPPT | 800V maximum PV voltage; 160V start; 160–650V MPPT range; 550V rated input |
| MPPT / strings | Two MPPT trackers with 2 + 2 strings; 36A + 36A maximum operating input current |
| Efficiency | 97.6% maximum efficiency; 97.0% European efficiency; MPPT efficiency above 99% |
| Parallel operation | Deye lists up to 10 units in parallel for on-grid and off-grid operation |
| Protection / cooling | IP65 enclosure; intelligent air cooling |
| Dimensions / weight | 456 × 750 × 268.5mm excluding connectors and brackets; 51.9kg |
| Communication | Wi-Fi, RS485 and CAN interfaces listed |
Primary technical source: Deye SUN-14/15/16/18/20K-SG05LP3-EU-SM2 datasheet dated 2026-04-24. Commercial availability source: current LeforESS supply quotation. Proposed new URL must be checked for availability before publication.
Product views
Real Product Visuals for Buyer Review
The images are derived from the quoted product, supplier material or official manufacturer documentation. They are not AI-redrawn product concepts.
Before quotation
Data Needed Before a 20kW Inverter Quote
A useful quote needs the grid, PV, battery and backup design together. Sending only the inverter model usually delays compatibility review.
- Destination country and grid voltage/frequency
- PV module model, string Voc and proposed array size
- Battery model, BMS protocol and parallel quantity
- Backup load list and motor/inrush loads
- Single-line diagram and earthing arrangement
- Monitoring, meter, CT and generator requirements
Buyer questions
Practical Questions Before Ordering
These answers are intentionally specific about what must be checked before a distributor, installer or EPC order is confirmed.
Can any 48V LiFePO4 battery be used?
No. The voltage range may overlap, but BMS protocol, current capability, parallel rules and protection design must all be approved.
Does it provide three-phase backup output?
The model is a three-phase hybrid inverter with off-grid output. Confirm the backup-load design, phase balance and local wiring standard for the project.
Is the inverter certified for my country?
Deye publishes model-family approvals, but the required certificate set varies by destination. Confirm the exact model suffix and grid-code document before ordering.
What warranty should be published?
Do not hardcode a warranty period until the installation country, supplier channel and official warranty document are confirmed.
Build a Verified Deye 20kW System Quote
Send the destination, PV string plan, approved battery choice, backup loads and required accessories. LeforESS will check the project configuration before pricing the inverter and storage scope.