| Project Scenario |
Approx. PV Capacity |
Typical System Role |
| Medium Commercial Rooftop |
150–180kW |
Commercial grid-connected generation |
| Large Industrial Rooftop |
180–225kW |
High-capacity industrial PV generation |
| Ground-Mounted PV Plant |
Up to 225kW recommended |
Utility-style commercial PV installation |
| Complex Multi-Orientation Roof |
Project Dependent |
Separate MPPT management for different arrays |
| Small Residential Installation |
Not Recommended |
Excessive inverter capacity |
| Off-Grid Power System |
Not Recommended |
Requires an appropriate off-grid/hybrid architecture |
Growatt MAX 150KTL3-X LV FAQs
What type of solar inverter is the Growatt MAX 150KTL3-X LV?
The Growatt MAX 150KTL3-X LV is a three-phase grid-connected (On-Grid) PV inverter designed primarily for commercial and industrial solar installations.
How much AC power can the MAX 150KTL3-X LV deliver?
Its rated AC output is 150kW, while its maximum apparent power is rated at 165kVA.
Can the MAX 150KTL3-X LV accept more PV capacity than its AC rating?
Yes. The recommended maximum PV array capacity is 225kW, allowing the system to use DC oversizing relative to the 150kW AC output.
How many MPPT channels are available on this Growatt inverter?
The MAX 150KTL3-X LV has 10 independent MPPT trackers, allowing different PV array conditions to be managed separately.
What DC voltage can be applied to the inverter?
The maximum DC input voltage is 1100VDC, while the MPPT operating range extends from 180VDC to 1000VDC.
What is the maximum PV input current of each MPPT?
The maximum input current per MPPT is specified as 45A, with a maximum short-circuit current of 56.5A per MPPT.
Is the MAX 150KTL3-X LV a single-phase or three-phase inverter?
It is a three-phase solar inverter intended for three-phase grid-connected PV systems.
What AC voltage does the Growatt MAX 150KTL3-X LV support?
The nominal AC voltage is 220/380V or 230/400V, with a specified operating range of 340–440V.
What efficiency can be expected from the MAX 150KTL3-X LV?
The stated maximum efficiency is 98.8%, while the European efficiency is 98.4% and MPPT efficiency reaches 99.9%.
Can this inverter be installed in an off-grid solar system?
No. The MAX 150KTL3-X LV is intended for grid-connected operation. An off-grid project requires an inverter specifically designed for standalone operation.
What makes the MAX 150KTL3-X LV suitable for large PV arrays?
Its 150kW AC output, 225kW recommended PV capacity, 10 MPPT trackers, high DC voltage capability, and string-level monitoring functions make it suitable for large commercial and industrial PV systems.
Does the inverter provide protection against DC polarity reversal?
Yes. DC reverse-polarity protection is included, along with an integrated DC switch and other AC/DC protection functions.
Does the MAX 150KTL3-X LV include surge protection?
Yes. The specified protection system includes Type II surge protection on the DC and AC sides.
Is AFCI available on this Growatt model?
AFCI arc-fault detection is available as an optional feature according to the specified configuration.
How does the inverter monitor PV strings?
The inverter provides intelligent string monitoring, string detection, and Smart I/V Scan & Diagnosis functions for identifying abnormal PV string behavior.
What communication options are available?
RS485 and USB are available, while PLC, GPRS, 4G, and WiFi can be provided as optional communication solutions depending on the configuration.
What is the IP rating of the Growatt MAX 150KTL3-X LV?
The inverter has an IP66 enclosure rating, providing a high level of protection against dust and water for suitable outdoor installations.
Can the MAX 150KTL3-X LV be used for industrial rooftop projects?
Yes. Its 150kW output, multiple MPPT trackers, high PV input capability, and IP66 enclosure make it well suited to commercial and industrial rooftop PV applications.
What is the operating temperature range of this inverter?
The specified operating temperature range is -30°C to +60°C.
Does the MAX 150KTL3-X LV support battery storage?
Battery storage should be evaluated as part of the complete system architecture. Separate energy storage equipment and the overall electrical design need to be considered for such applications.
What is the maximum installation altitude?
The specified maximum installation altitude is 4000 meters.
What cooling system is used in the MAX 150KTL3-X LV?
The inverter uses Smart Air Cooling to manage operating temperature during power conversion.
Is the Growatt MAX 150KTL3-X LV suitable for a small home?
Generally, no. With a 150kW rated output, this model is intended for high-capacity commercial and industrial PV systems rather than typical residential installations.
Ahmed Aghlu –
Does the Growatt MAX 150KTL3-X LV support 150 kW continuous AC output at high temperatures, and what is its maximum operating temperature and derating performance?
webmaster –
Hello, Yes, it supports continuous 150 kW output, with power derating at higher