Choose a hybrid solar inverter by the destination grid, PV string limits, approved battery/BMS combination and required operating modes. Size protected loads and starting surges separately. Confirm the exact model, firmware and installer-approved connection and backup design before purchase.
When this equipment fits your project
Hybrid inverters can combine PV, battery and grid functions for a defined installation. Start with the site electrical arrangement and the reason for adding storage: self-consumption, defined backup loads or another permitted operating mode. Send the proposed design to the responsible installer before ordering. Product naming does not establish battery compatibility, motor-starting capability or permission to export to the local grid.
Shown as a configuration reference. Availability and the equipment offered for your project are confirmed separately.
Specify the complete configuration
| Decision | Include in your request | Evidence to compare |
|---|---|---|
| Grid | Country, voltage, frequency, phase and earthing | Exact regional model and accepted connection documents |
| PV input | Module/string layout, voltage and current conditions | String calculation against each input/MPPT limit |
| Battery | Model, usable energy, current limits and BMS | Approved compatibility list and firmware match |
| Backup | Protected loads, surges, duration and transfer needs | Installer-reviewed backup circuit and operating evidence |
| Integration | Meter/CT, generator, existing inverter and modes | Wiring diagram, controls and commissioning scope |
The Deye SG04LP3-EU reference family has 5–12 kW three-phase variants and a listed 40–60 V battery range. That range does not establish compatibility with every low-voltage battery. DOE inverter guidance explains that outage operation requires a system designed for it.
Compare installed cost and support
Compare the inverter, battery, meter/CT, protection, cabling, switchgear and installation as one scope. Confirm monitoring access, firmware support and which commissioning checks are included. Use measured site loads and applicable tariffs for an economic assessment; do not assign a generic saving or backup duration to an unspecified inverter and battery.
Keep the delivery term, currency, quote validity and included scope consistent. Use the complete project budget tool to organize assumptions, then replace estimates with dated quotations and destination-specific charges. Discuss supplier checks through our sourcing process.
Agree an acceptance test before ordering
Verify the installed model, firmware, wiring and battery communication against the agreed design. Have the qualified installer check allowed grid modes, metering and protected-load behavior. Demonstrate any agreed outage/restore operation under suitable controlled conditions, including starting loads and recovery. Record limitations and hand over the as-installed diagram and settings.
What to include in your RFQ
- Country, utility, grid voltage/frequency, phase and neutral/earthing arrangement
- Existing or proposed PV array: module model, string layout, voltage and current limits
- Normal load profile, peak demand and three-phase load balance
- Backup loads, motor-starting surges, required duration and transfer expectations
- Battery model, chemistry, usable energy, charge/discharge limits and BMS protocol
- Exact inverter model, firmware and compatible battery list
- Grid export rules, metering/CT arrangement and connection approval status
- Existing generator or inverter integration and required operating modes
- Installation location, ambient temperature, ventilation and protection measures
- Qualified installer, commissioning, service, budget and procurement date
Need OEM / ODM customization?
Submit branding, packaging, configuration or engineering requirements for this equipment. Include the target market, initial and annual quantities, required changes and acceptance criteria.
Customization feasibility, permitted branding, development responsibilities, minimum quantity, cost and lead time are reviewed for the proposed supplier and configuration before a quotation is confirmed.
Frequently asked questions
Will any hybrid inverter keep my equipment running during a power cut?
No. Backup operation depends on the specific inverter, battery, circuit design and protected-load limits. Confirm the backup connection, transfer behavior, surge capability and recovery with the responsible installer.
How do I check whether my battery and BMS are compatible?
Match the exact battery model, communications protocol and firmware to the inverter manufacturer’s current compatibility information. Also check voltage and charge/discharge limits. A nominal 48 V label is insufficient evidence.
Which PV string limits must be checked separately from inverter AC power?
Check maximum input voltage, MPPT operating range and current limits using the actual modules, strings and temperature conditions. AC output rating does not replace those separate PV-side checks.
Should I use a single-phase or three-phase inverter for my site?
Follow the site grid arrangement and required load distribution. Confirm phase, voltage, neutral/earthing and local connection requirements. For a three-phase system, review load imbalance and each relevant operating-mode limit.
How do backup loads and starting surges affect the selection?
List only the loads that must remain supplied, with steady demand and starting surge. Check inverter and battery limits together and include required duration. Have the installer confirm the design and demonstrate agreed behavior.
Which local grid-connection documents and installer checks are needed before purchase?
Ask the qualified installer and utility which documents apply to the exact model and destination. Confirm connection/export acceptance, wiring/protection design, metering, battery compatibility and commissioning responsibilities before committing to the equipment.
Reference information
- Deye: SUN-5/6/8/10/12K-SG04LP3-EU Three-Phase Hybrid Inverter
- US Department of Energy: Solar Integration—Inverters and Grid Services Basics
Reference data and images explain equipment configurations. IndustryApex engineers confirm the offered model, specification and commercial scope in your project quotation.