Growatt commercial PV string-inverter review
Growatt MID 33-50KTL3-X2 Commercial String Inverters
MID 33/36/40/50KTL3-X2 The verified source tables show 1100 V maximum and 200-1000 V MPPT; 33/36 kW has three trackers and 40/50 kW has four, with two strings and 32 A operating current per tracker On the AC side, three-phase 220/380 or 230/400 V, 33-50 kW rated output and 36-55.5 kVA maximum apparent power 98.5-98.8% maximum depending on member Select one complete model, voltage route and destination document set before quotation; family maxima, optional protection and certificate lists do not apply automatically to every member.
Current source identity: official Growatt May 2026 MID 33-50KTL3-X2 datasheet set. Tracker count changes from three to four at 40 kW, so string schedules and logger/parallel design must use the selected column rather than the family headline.
Downloads
Current document status
Before quotation, obtain the exact full model and suffix, current datasheet and manual, destination certificate/model schedule, approved grid profile, PV string schedule, AC collection and protection design, AFCI/PID/SPD option status, connector and monitoring hardware, firmware, warranty, packing and written substitution rules.
Current family evidence
Preserve the member, DC-input and AC-voltage boundaries
The official tables define a family, not one interchangeable column.
Released model columns
MID 33/36/40/50KTL3-X2
PV and MPPT architecture
1100 V maximum and 200-1000 V MPPT; 33/36 kW has three trackers and 40/50 kW has four, with two strings and 32 A operating current per tracker
AC interconnection route
three-phase 220/380 or 230/400 V, 33-50 kW rated output and 36-55.5 kVA maximum apparent power
Protection and physical record
Type II DC/AC surge protection, string monitoring and AFCI are listed; confirm activation, settings and destination requirements. IP66; 34 kg for 33/36 kW and 38 kg for 40/50 kW
commercial PV inverter RFQ inputs
Six checks before fixing the inverter member and BOM
Array, AC collection, options and destination evidence must map to the same released model.
Full model and destination
State the complete model/suffix, quantity, country, utility, service voltage/frequency, export or PPC rule and required grid-code, safety and EMC evidence.
PV string and MPPT schedule
Provide module Voc/Vmp/Isc/Imp, temperature coefficients, strings per tracker and orientation; verify cold Voc, operating voltage, tracker current, short-circuit allowance and connector/cable ratings.
AC collection and grid
Define inverter AC voltage, conductor/busbar, breaker or switchgear, transformer where applicable, grounding, fault level, voltage drop, reactive-power duty and point-of-connection limit.
Protection and ordering options
Freeze DC switch, SPD, AFCI, anti-PID, night SVG or other options by exact ordering code. A source row marked optional or variant-specific is not standard equipment for every member.
Monitoring and plant control
Confirm RS485/USB, Wi-Fi/LAN/4G/RF/PLC hardware, logger or ShineMaster/SEM route, meter/PPC/export control, communications-loss behavior, firmware and account ownership.
Documents and commercial control
Request current datasheet/manual, certificate model list, SLD and settings, warranty, packing, serial traceability, accessories, lead time and written approval for any substitution.
Family, option and performance boundaries
Do not move family maxima or certificate coverage between columns
The exact member, voltage route, firmware, array and destination documents remain controlling.
Variant tables remain separate
Tracker count changes from three to four at 40 kW, so string schedules and logger/parallel design must use the selected column rather than the family headline.
Maximum efficiency is not yield
98.5-98.8% maximum depending on member This is a datasheet maximum, not an annual-energy or every-operating-point guarantee; model, loading, temperature, clipping, wiring and availability affect yield.
Optional protection needs an order code
Type II DC/AC surge protection, string monitoring and AFCI are listed; confirm activation, settings and destination requirements. Confirm factory option, external devices, settings, applicable manual and destination design instead of relying on a family headline.
Certificates do not transfer automatically
A downloads list may span members, suffixes and countries. Require the ordered full model on the current certificate schedule and use the destination grid settings and commissioning record.
Continue the commercial PV review
Connect the exact inverter to the project design and controlled BOM
Use the solution and BOM guides to coordinate electrical interfaces, documents and responsibility boundaries.
Commercial rooftop solar solution
Coordinate array, inverter, AC collection, protection, controls, interconnection, site and acceptance responsibilities.
Review project scope →Solar BOM review guide
Freeze model, strings, voltage route, options, accessories, certificates, quantities and exclusions before comparing prices.
Build the inverter BOM →Growatt MID 33-50KTL3-X2 Commercial String Inverters FAQ
Questions to close before releasing the inverter order
One exact member and one matching evidence set should support the quotation.
Which model columns are covered by the verified source?
MID 33/36/40/50KTL3-X2
Can one PV string design be used across the whole family?
No. 1100 V maximum and 200-1000 V MPPT; 33/36 kW has three trackers and 40/50 kW has four, with two strings and 32 A operating current per tracker Check the exact member's tracker/string allocation, voltage and current against the selected module and site temperature.
Are AFCI, PID and other protection functions standard on every member?
Do not assume that. Type II DC/AC surge protection, string monitoring and AFCI are listed; confirm activation, settings and destination requirements. Confirm the complete ordering code, external protection design, manual and destination requirements.
What should the RFQ freeze?
Freeze full model/suffix, PV strings, AC voltage and collection, transformer/grid interface, protection/options, monitoring/PPC, certificate set, firmware, warranty, accessories and quantity.
Prepare an exact Growatt MID 33-50KTL3-X2 Commercial String Inverters RFQ
Send the full member and suffix, module/string schedule, AC and grid design, protection/options, monitoring/control, destination documents, accessories and quantity.
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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