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Smart 50Hz / 60Hz Micro Grid Tie Inverter 500 Watt with Power Automatically Locked 

Place of Origin: Zhejiang, China (Mainland) 
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Product Detail

Model No.: SG500

Smart 50Hz / 60Hz Micro Grid Tie Inverter 500 Watt with Power Automatically Locked


Smart 50Hz / 60Hz Micro Grid Tie Inverter 500 Watt with Power Automatically Locked






1. it is a key device of power generation system such as PV power generation system, small power wind power generation system.


2. Smart Micro inverter optimized design for modularization modular power generation systems.


3. They can use with DC power supplies such as the mainstream solar modules, 18V, 24V and 36V monocrystal and/or Polycrystalline solar panels, small power wind generator as well as battery for converting into alternating current which suitable for feeding into utility grid.


4. Product is stable and reliable as well as high conversion efficiency. It is best choice for PV power generation systems and small power wind power generation systems



Rated Power


Compatible with Solar Panels

36 cells/18V

Vmp: 18-21V; Voc: 20-24V

60 cells/24V

Vmp: 26-30V; Voc: 34-38V

72 cells/36V

Vmp: 35-39V; Voc: 42-46V

DC Input Range




MPPT Voltage




DC MAX. Current




AC Output

120VAC(90-140VAC) or 230VAC(180-260VAC)


50Hz/60Hz(Auto control)

Power Factor




Phase Shift




Peak Efficiency




Stable Efficiency






Peak Efficiency




Stable Efficiency





Islanding; Short-circuit; Low Voltage;

Over Voltage; Over Temperature Protection

Working Temperature


Working Humidity

0%~90%RH non-condensing


Indoor design


Luminous Diode(LED)



Stand-by Power



EN61000-6-3:2007 EN61000-6-1:2007

Grid Disturbance

EN 50178+EN 62109-1+VDE0126-1-12

Grid Detection

DIN VDE 1026 UL1741


System Function                                             

  • directly connected to the solar panels (do not need to connect the battery)

Using precise MPPT function, APL functions, the inverter automatically adjust the solar panels of maximum output power,simply connect the solar panel to the grid inverters. Do not need to connect the battery.

  • AC 0 angle with high precision auto-detection

AC phase angle of 0 through isolation amplifier then input to the MCU for high-precision detection and analysis. The phase shift rate is less than 1%, thus achieve high-precision with phase modulation AC output together.

  • Synchronous High-frequency Modulation

In the process of the grid, usually adapt the same phase angle in parallel. (ie, When the two-phase alternating current total is equal to 0.Use switch to combination the two AC fusion) and the product is rectified AC half-frequency AC to 100Hz first, then the machine use the high frequency current in the circuit and semi-100Hz frequency alternating current generated combination, to achieve high-frequency modulation.

  • Pure Sine Wave Output

       Use SPWM directly to make pure sine wave output.

  • Automatic Sensing Function Solar Luminosity

Use the latest luminosity perception operation technology. The different illuminate angle and intensity of the solar panel will produce different current output. Use advanced CPU to operate the different illuminance and the data can be directly displayed on the LCD. Then you can visually see the sense of the strength of the sun unit. Used more convenient.

  • Power Automatically Locked (APL)

In different current fluctuations, we should use the MPPT function. When the MPPT function adjusted to the maximum power point, the product automatically powers locked in maximum power point, then made the output power more stable.




Installation instruction :



Please read the below notes carefully before installation:


A) Make sure the open voltage and operation voltage is in the range of 10.5-28V, and we recommend the 18V rated voltage solar panel or 24V battery.


B) Make sure the inverter’s  AC voltage and frequency is the same with power grid voltage and frequency.


C) Installation inverter in the low humidity and well-ventilated place to avoid the inverter damp and overheating, And clear the inflammable and explosive materials around.


E) Recommended to use 4AWG DC input cable that can handle more than 50A current.


F) DC input cable no more than 8M, because long DC cable will reduce the voltage from solar panel to inverter, then make some loss.


G) There must be a circuit breaker between solar power generation and power grid (show like the “control switch” in figure 1). And there will be no load before the circuit breaker.


H) Before connect all the connections, you must disconnect the utility power . After make sure the all connections are right then connect the utility power.


I) If you need to disconnect the mains switch when the solar power generation is in operation , you must disconnect the control switch first(show like the “control switch” in figure 1).


J) Avoid children touch or play the inverters, in order to prevent electric shock.


K) Non-professional do not disassemble the inverter, only qualified s

 Mr. Sophie

Tel: 86-577-57181685
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Company Info

Wenzhou Sunuse Electric Technology Co., Ltd. [China (Mainland)]

Business Type:Manufacturer
City: Wenzhou
Province/State: Zhejiang
Country/Region: China (Mainland)

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