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SAJ-R6-15KW Grid Tied Inverter 2MPPT 3 Phase

Quick Overview

Industrial and Commercial three phase PV grid-connected inverters are mainly used in commercial rooftop PV grid system, to turn PV DC current into AC current for equipment in factories or sell to power grid. Suntrio Plus 12-20K is characterized with high efficiency, convenience in installing, stable and reliable. It’s preferred inverter for commercial PV investment.


Brand SAJ
Product Code ST-15
Warranty 5 Years
User Guide Download PDF
SKU: ST-15K Categories: , ,

SAJ-R6-15KW Grid Tied Inverter 2MPPT 3 Phase

The SAJ-R6-15KW Three Phase On-Grid Solar Inverter has an imminent power capacity of 15000 Watts. Maxpower provides a working warranty of 5 years, thus, ensuring robust working capability. Before getting to the inverter model’s description—the SAJ by Maxpower is ultimately known for finest conversion efficiency of DC to AC power and sleeky/robust structure. Now, getting on to the working of the Suntrio Plus 15 Three Phase On-Grid Solar Inverter. Here, are some important input ratios of this solar inverter model;

  • The recommended accessed DC power intake of the solar inverter is up to 18150 watts.
  • The voltage range of single MPPT module is from 180 – 900 V.
  • For the starting up of the PV inverter model, it takes almost 200 V.
  • The minimum DC voltage ratio that can be efficiently converted are; 180 V.
  • The number of DC connection sets per single MPPT is 2/2.
  • There are two MPPT modules integrated in this solar panel inverter model.

Output Working

The rated AC power given out by the solar inverter model is up to 15000 VA. The maximum ac power that the solar inverter can handle is up to 165000 VA. The normal ratio of AC current given out by Suntrio Plus 15K Three Phase On-Grid Solar Inverter is 21.7 amperes—on the other hand, the maximum AC current ranges up to 25 amperes. Likewise, the nominal AC voltage / range of goes from 220/380V, 230/400V, 240/415V; 180V-280V/312V-485V. The ratios are;

  • The grid frequency of the solar inverter model ranges from 50 Hz, 60 Hz/44Hz – 55Hz.
  • The power factor—0.8 leading – 0.8 lagging
  • The solar power inverter model has THDi (total harmonic distortion) while the output of energy at nominal power range of <3%.

Related: Suntrio Plus 5K On-Grid Phase Solar Inverter


As being one of the best solar inverters 2021, the Suntrio Plus 15L Three Phase On-Grid Inverter has DC to AC conversion efficiency of up to 98.4%. While, the euro efficiency ratio at imminent of 6000 VDC intake is up to 98.1%. On the side note, the MPPT modules are likewise efficient of up to 99.9%.

Protective Features

The protective features integrated in the solar inverter model that ensures durability and sustained performance. These are;

  • Internal Over-Voltage Protection: If the circuit faces any over-voltage situation, this usually can burn the device—the internal over-voltage protection feature cuts the power, shut down the system to prevent any superior harm.
  • DC Insulation Monitoring: The DC insulation monitoring is integrated to make sure the DC power input is on point.
  • Grid Monitoring: The grid connection requires to be monitored, so that in case of any disruption, the user is notified immediately.
  • AC Short Circuit Protection: In the output module, when the DC power is converted into AC power, short circuits can be imminent rarely—this feature protects all the way from the damage of this.
  • Thermal Protection: The overheating is one of the sole reasons that most of the electrical devices fail to sustain proper performance. The thermal protection prevents any preliminary or viable harm of overheating.


The topology of this best solar inverter model is transformer-less. The Suntrio 15K On-Grid Solar Inverter has a night time (or when not converting energy) consumption of less than 0.6 Watt. On the standby mode, it has consumption of less than 10 watts. The temperature range optimal for the suitable performance is from -25 degrees Celsius to 60 degrees Celsius. As being one of the most durable solar inverter 2021, it is integrated with intelligent fan for proper cooling.

Technical Specification

Input (DC)
Recommended accessed DC power1 [W] 18150
Max. DC Voltage [V]
MPPT Voltage Range [V] 180-900
Nominal DC Voltage [V]
Start Voltage [V] 200
Min. DC Voltage [V] 180
Max. DC Input Current PV1/PV2 [A] 22/22
Number of MPPT 2
Number of DC Connections Sets per MPPT 2/2
DC Switch
Output (AC)
Rated AC Power [VA] (@230V,50Hz) 15000
Max. AC Apparent Power [VA] 16500
Rated AC Current [A] 21.7
Max. AC Current [A] 25.0
Nominal AC Voltage / Range 3/L/N/PE, 220/380V,  230/400V, 240/415V; 180V-280V/312V-485V
Grid Frequency / Range 50Hz, 60Hz/44Hz-55Hz,  54Hz-65Hz
Power Factor, Adjustable [cos φ] 0.8 leading ~ 0.8 lagging
Total Harmonic Distortion [THDi] <3% (at Nominal Power)
Feed-in 3L + N + PE
Max. Efficiency 98.4%
Euro Efficiency (at 600Vdc) 98.1%
MPPT Accuracy >99.9%
Internal Over-Voltage Protection Integrated
DC Insulation Monitoring Integrated
DCI / GFCI / Grid Monitoring Integrated
AC Short Circuit Current Protection Integrated
Thermal Protection Integrated
AC Surge Protection Ⅲ (Integrated),Ⅱ (Optional)
String Current Monitoring Integrated
DC Surge Protection Ⅱ (Optional)
DC Fuse Optional
Anti-island Protection Monitoring AFD
DC Connection MC4/H4
AC Connection Terminal Block
LCD Display 3.5 inch Graphic LCD Display, Backlight
Display Language English
Communication Port 2*RS485 + 1*RS232
Communication Wi-fi / GPRS / Ethernet  (Optional)
General Data
Topology Transformerless
Consumption at Night [W] <0.6
Consumption at Standby [W] <10
Operating Temperature Range -25°C to +60°C (45°C to 60°C with Derating)
Cooling Method Intelligent fan
Ambient Humidity 0% – 100% Non-condencing
Altitude 3000m ( >2000m power derating)
Noise(DBA) <35
Ingress Protection IP65 (Indoor and Outdoor installation)
Mounting Rear Panel
Dimensions (H*W*D) [mm] 640*450*232
Net Weight [kg] 29.0
Standard Warranty  [year] 5 (standard) 10/15/20/25 (Optional)
Certificates IEC/EN62109-1/2,  EN61000-6-2/3, IEC61683, IEC60068-2, IEC62116, IEC61727,  VDE0126-1-1/A1, VDE-AR-N 4105, CQC NB/T 32004, G83/2, NBR 16149, NBR 16150,  C10/11, EN50438, Rd1669, UNE206006,  UNE206007, G59/3



Flexible and Efficient

  • Optimized global MPPT algorithm, MPPT efficiency higher than 99.5%
  • Three MPPT which are compatible to all kinds of solar roofs
  • Max. efficiency of 98.8%, European efficiency of 98.5%
  • Super wide input voltage range(180V-1000V), supporting various solar panels and string desings

Convenient Installation

  • Aluminium case design, smaller and lighter
  • Integrate DC combiner box, reduce system cost
  • Separate area for maintenance, easy and quick for repair

Smart and Easy to Use

  • One-button safety setting, easy configuration of all parameters
  • Built-in independent RTC chip, supporting data storage of 25 years
  • Integrated LCD graphical display, showing daily/monthly/yearly generation
  •  Integrated with the function of reactive power control & ZVRT, responds to power grid dispatching, energy management of grid
  • Integrate string current monitoring, monitor string working status

Safe and Reliable

  • IP65 protection for indoor and outdoor installation
  • Optional DC&AC surge protection, guarantee system safety
  • Optional Anti-PID module, protect panels from PID damage
  • Aluminum case design to enhance heat dissipation and prevent rust corrosion, prolong life time


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