20kW Three-Phase Commercial String Inverter for Project RFQs
Current source identity: an internal representative 20 kW C&I sourcing configuration; no manufacturer, exact model or released factory datasheet is attached.
This representative commercial configuration describes a 20 kW three-phase grid-tied string inverter for shops, warehouses, carports and small factory roofs. The record lists 30 kW recommended maximum PV input, two MPPT trackers with up to four strings, a 200–1000 V MPPT range, 1100 V maximum DC and 220/380 or 230/400 V AC. It does not identify a released manufacturer model, and per-string current, protection options, enclosure rating, grid-code firmware and certificates remain to be confirmed.
Current sourcing-configuration specifications
These values are preserved from the current internal product record. They define shortlist requirements, not a released manufacturer model; require a matching supplier datasheet before order.
PV Input & MPPT
| Maximum PV input | 30 kW recommended maximum |
|---|---|
| PV / MPPT range | 200–1000 V; 1100 V maximum |
| MPPT configuration | 2 MPPT / up to 4 PV strings |
Battery & Backup
| Battery interface | Not applicable |
|---|---|
| Backup / generator | Not applicable |
AC Output & Grid
| Rated AC output | 20 kW |
|---|---|
| AC connection | 220/380 V or 230/400 V three-phase; 50/60 Hz |
| Maximum efficiency | Up to 98.6% |
| Rated output current | Approx. 30 A rated output at 400 V |
Installation & Communication
| Protection rating | Outdoor enclosure; final IP rating by confirmed model |
|---|---|
| Communication | RS485; monitoring gateway or Wi-Fi/4G option by model |
| Final model selection | Confirm data sheet, grid code, certifications and accessory package before order |
Current document status
Request a full model/suffix, current datasheet/manual, MPPT and string-current table, protection/options list, monitoring architecture, grid-code certificate set, installation requirements and commercial document package for the quoted inverter.
Current C&I inverter evidence
Translate the representative 20 kW record into one exact factory model
The current values can define a shortlist only after PV current, grid and protection details are added.
AC power class
The record states 20 kW and approximately 30 A at 400 V. Confirm rated/max apparent power, current, power-factor range, reactive capability and derating for the selected model.
DC voltage and oversizing
30 kW recommended maximum PV, 200–1000 V MPPT and 1100 V maximum DC are listed. Cold Voc, start voltage and operating-voltage behavior need exact data.
MPPT and string architecture
Two MPPT and up to four strings are listed without per-MPPT operating/short-circuit current, connector arrangement or whether strings may be paralleled equally.
Outdoor and monitoring route
An outdoor enclosure and RS485 with monitoring options are described, but IP class, SPD/AFCI/PID/insulation functions, logger/meter and communications accessories are model-specific.
20 kW commercial inverter RFQ checks
Six project inputs needed before approving the inverter
C&I selection must coordinate module current, roof layout, AC system, export control and O&M.
Module and string schedule
Provide module model, Voc/Vmp/Isc/Imp, temperature coefficients, minimum temperature, quantity, orientation and strings per MPPT.
DC current and ratio
Check operating and short-circuit current per string/MPPT, connector limits, DC/AC ratio, clipping study, cable losses and isolation/SPD design.
AC and grid
State country, utility, transformer/LV voltage, frequency, earthing, fault level, power factor/reactive requirements and applicable grid code.
Protection and shutdown
Confirm DC switch, SPD, AFCI/PID options, insulation/residual-current monitoring, AC protection, rapid shutdown if required and emergency isolation.
Monitoring and export control
Define logger, meter/CT, zero-export accuracy, plant portal, RS485/Ethernet/4G, alarms, cybersecurity and SCADA/BMS interfaces.
Evidence and supply
Request model/suffix, datasheet/manual, certificates, grid report, accessories, warranty, service/spares, packing, quantity, lead time and substitution control.
String and grid boundaries
20 kW and 150% DC wording do not approve the array or destination
PV current, voltage at temperature and local interconnection evidence must all match the exact model.
DC oversizing is a design result
A 30 kW recommended maximum does not approve every 30 kWp array. Yield, clipping, current, voltage, orientation, temperature and warranty rules determine the final ratio.
Two MPPT does not define four compatible strings
String count alone omits per-input current, short-circuit margin, parallel-string matching, connectors and cable/protection requirements.
Outdoor does not prove an IP class
Require the exact enclosure rating, corrosion/environment limits, installation orientation, clearances, cooling and derating data.
Grid-tied does not equal local approval
The precise model, firmware, grid setting, certificate/report, export-control hardware and utility process must match the destination.
Continue the C&I inverter review
Connect the 20 kW shortlist to roof and procurement evidence
Use the commercial solution for system scope and the certificate guide for document verification.
Commercial rooftop solar solution
Coordinate roof zones, strings, inverter placement, AC distribution, monitoring and local EPC responsibility.
Review C&I system scope →Solar certificate verification guide
Match model, applicant, standard edition, report scope and destination requirements before accepting document labels.
Review certificate evidence →20 kW string inverter FAQ
Questions to close before selecting the factory model
The current page defines procurement requirements rather than one manufacturer product.
Is this an exact 20 kW manufacturer model?
No. It is a representative C&I sourcing configuration. Require the manufacturer, full model/suffix and matching released data and certificates.
Can any four module strings be connected?
No. Verify cold Voc, Vmp range, Isc/Imp, per-input and per-MPPT current, parallel-string matching, connectors and the exact string allocation.
Does 30 kW maximum PV mean a fixed 150% design?
No. Confirm the model limit and perform a project-specific yield, clipping, voltage/current, temperature and warranty review.
Which documents belong in the RFQ?
Request the datasheet/manual, string-current table, grid-code and safety/EMC evidence, monitoring/export-control architecture, accessories, warranty, packing and current terms.
Build a model-specific 20 kW inverter RFQ
Send the module/string schedule, roof zones, AC/grid system, export-control and monitoring scope, protection requirements, destination and required documents.
Start with the product, application or project information you have. We can help identify the remaining configuration, document or delivery questions before a final quotation.
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