300Watt / 500Watt off grid Micro Grid Tie Inverter with Islanding Protection and APL

 
High conversion rate micro inverters off grid with Islanding Protection and APL
 
 
 
 
System Function:
 
Constant Current, Constant Power:
This product is constant current, constant output power, without any overload, over-current phenomenon
 
Automatically Shut Down When The Power Output Of a Fault:
When the city power system is in failure, the inverter will automatically turn off the output
 
Current Limit Protection
Current limit
 
Stack Multiple Machines:
Multiple small power inverters in parallel can achieve large output power
 
High-Frequency High Conversion Rate:
Adapt high frequency converter, the output more efficient
 
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.
 
Maximum Power Point Tracking (MPPT):
Because the current intensity and the voltage changes at any time, if there is no power point tracking, there will be a lot of problems. In the past time, usually adopt a solar controller, but this product uses high-precision     MPPT operation power, automatic and immediate adjust the solar panels output power at the maximum output point, then achieve a stable output purposes.MPPT is for short of "Maximum Power Point Tracking". It means the controller can sense the voltage of the solar panels on time, and can track the highest voltage and current (VI).Then made the inverter discharge to power grid with the highest efficiency.
The peak voltage (Vpp) of the solar panels is about 19.5V when it in factory. And the environment temperature is 25 ° C. The reason of setting this temperature(interestingly, different from the subjective imagination, we ordinary people the conclusion may let us surprised) is that when the weather is very hot, solar panels’ peak voltage will fall to about 17.5 V while in cold weather, the peak voltage can achieve 20.8 V
 
Product Parameters/Details:
 

 
Connection DC terminal:
 
Connect the solar panels positive terminal to inverter’s positive terminal, and negative to negative. And you must screw up the nut to avoid the bad contact. Show in figure:
 
 
 

 
Connection of AC terminal:
 
Before connect the inverter’s AC cable to the socket, you must disconnect the utility power. Then put the AC cable which has holes terminal into the inverter’s 3 feet port and the pin terminal to the socket.  Please make sure both of the terminal are connect fastness to avoid bad contact. Show like figure:
 

 
Operation:
 
After all connection, first open the mains switch, then open the inverter. When the inverter’s green LED shows, it means the inverter start to work
 
Please read the below notes carefully before installation:
 

A) Make sure the open voltage and operation voltage is in the range of 22-60V, and we recommend the 36V rated voltage solar panel.

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 )

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

  K)Non-professional do not disassemble the inverter, only qualified serviceman can repair it.