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SAJ Grid Tied Inverter 50KW/ 3MPPT 3 Phase
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SAJ Grid Tied Inverter 30KW/ 3MPPT 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. SAJ 30-50K is characterized with high efficiency, convenience in installing, stable and reliable. It’s preferred inverter for commercial PV investment.


Brand SAJ
Product Code ST-33
Warranty 5 Years
SKU: ST-33K Categories: , ,

SAJ Grid Tied Inverter 30KW/ 3MPPT 3 Phase

The SAJ 30K On-Grid Solar Inverter has an integrated maximum DC power input of 39600 Watts. The maximum DC voltage by the PV inverter is up to 1000 V. The voltage range of the MPPT module as input is from 180 – 900 V. On the other hand, the nominal DC range voltages are 600 V. The minimum DC voltage for suitable operativity is 180 V. The maximum. DC input current as per PV1/PV2 is 22/22/22.

  • There are three MPPT modules integrated into the solar inverter.
  • The grid frequency range of 50 Hz, 60 Hz/44Hz-55Hz, 54Hz-65 Hz.
  • The THDi at the nominal power range is <3%.

Working Efficiency

The DC to AC conversion efficiency of the solar inverter is up to 98.8%. Likewise, the euro efficiency at 600 VDC is 98.5%. On the other hand, the accuracy given by each MPPT module is 99.5%. The rated output AC power of the model is 30000 VA. Likewise, the maximum AC apparent power generated can reach a highest of up to 33000 VA. The standard AC current integrated is 45.5 amperes—but the maximum reach of AC current is up to 50 amperes. On the other hand, the nominal AC voltage range of 3/N/PE, 220/380 V, 230/400V, 240/415V; 180V-280V/312V-485V.

Related:  Suntrio Plus 20K On-Grid Three Solar Inverter

Protective Features

The protective features of this model make it the best solar inverter in Pakistan—thus, allowing better use and ensured durability. These are;

Internal Over-Voltage Protection

As many of the ordinary inverters are reported to face damage due to over-voltage flow in the circuit. The internal over-voltage protection allows extended life expectancy of the solar inverter by protecting the circuit from the damage due to over-voltages flow.

Grid Monitoring

The solar inverter connected to the grid requires to be monitored constantly as any problem in the system will be immediately notified to the user. thus, the solar inverter model is integrated with the grid monitoring to accomplish static outcome from the Grid Tariff.

AC Short Circuit Protection

In case of any AC short circuit, the SAJ 30K On-Grid Solar Inverter is integrated to shut off the flow of power through the circuit—this will prevent the system to face any relevant damage.

Thermal Protection

The overheating in electrical devices is a common cause that usually led to system failures. The solar inverter model has featured thermal protection so that in case of device being overheated, it tolerates efficiently. On the other hand, if the system gets heated over tolerated ratio—this feature is responsible of shutting down the power to protect from damage.


The solar power inverter is not limited to these protective features only—as Maxpower offers an extended durability, thus, it has;

  • DC Insulation Monitoring
  • AC Surge Protection
  • String Current Monitoring
  • Anti-PID Module (Optional)
  • DC Fuse (Optional)
  • Anti-Island Protection Monitoring (AFD)

User Interface

For the DC connection to the solar inverter—the MC4/H4 port is intended in the model. on the other hand, for the terminal block is featured for the AC connection. It has integrated LCD display of 3.5 inches—the user can look the stats of currently working of solar inverter with Wi-Fi / GPRS and optional feature of ethernet.

Technical Specification

Input (DC)
Max. DC power [W] 39600
Max. DC Voltage [V] 1000
MPPT Voltage Range [V] 180-900
Nominal DC Voltage [V] 600
Start Voltage [V] 200
Min. DC Voltage [V] 180
Max. DC Input Current PV1/PV2 [A] 22/22/22
Number of MPPT 3
Number Of DC Connections Sets per MPPT 2/2/2
DC Switch Integrated
Output (AC)
Rated AC Power [VA] (@230V,50Hz) 30000
Max. AC Apparent Power [VA] 33000
Rated AC Current [A] 45.5
Max. AC Current [A] 50.0
Nominal AC Voltage / Range 3/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 98.8%
Euro Efficiency (at 600Vdc) 98.5%
MPPT Accuracy >99.5%
Internal Over-Voltage Protection Integrated
DC Insulation Monitoring Integrated
DCI / GFCI / Grid Monitoring Integrated
AC Short Circuit Current Protection Integrated
LVRT Integrated
Thermal Protection Integrated
AC Surge Protection Ⅲ (Integrated),Ⅱ (Optional)
String Current Monitoring Integrated
Anti-PID Module Optional
DC Surge Protection Ⅱ Optional
DC Fuse Optional
Anti-island Protection Monitoring AFD
DC Connection MC4/H4
AC Connection Terminal Block
LCD & LED Display 3.5 inch Graphic LCD Display
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] 700*530*260
Net Weight [kg] 48.0
Standard Warranty  [year] 5 (standard) 10/15/20/25 (Optional)
Certificates IEC62109-1/2, IEC61000-6-2/3, IEC60068-2, IEC62116, IEC61717, VDE-AR-N 4105, AS4777.2, AS4777.3, C-TICK, CQC NB/T 32004, G83-2, G59-3, NBR 16149, NBR 16150, TF 3.2.1



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