Solar Inverter (1.2KVA & 2.4Kva)

1. Introduction
This simple solar inverter is designed to power your home appliances or precious 3C electronics. It also can handle motor-type loads with high surge power such as vacuums, small freezers, or drills. With buil-in solar charger, it can convert solar power to battery power and provide continuous power to connected equipment during night time.

2. Important Safety Warning (SAVE THESE INSTRUCTIONS)
Before using the inverter, please read all instructions and cautionary markings on the unit, this manual and the batteries. 

Conventions used:
WARNING!
- Warnings identify conditions or practices that could result in personal injury.
- It's very important for system safety and efficient operation to use appropriate external 
  battery cable. To reduce risk of injury, external battery cables should be UL certified 
  and  rated for 75°C or higher. And do not use copper cables less than 10AWG. Below is 
  the external battery cable reference according to system requirements.

CAUTION!  
- Caution identify conditions or practices that could result in damaged to the unit or other 
  equipment connected.

-  To reduce risk of injury, only use qualified batteries from qualified distributors or      

   manufacturers. Any unqualified batteries may cause damage and injury. Do NOT use old       or overdue batteries. Please check the battery type and date code before installation 

   to  avoid damage and injury.

    

5. Installation
NOTE: Before installation, please inspect the unit. Be sure that nothing inside the package is damaged.

Connect External Battery        

Step 1-Take away the cover of external battery terminal. 

Step 2-Following battery polarity guide printed near the battery terminal! Place the   

          external battery cable ring terminal over the battery terminal. RED cable to 
          the positive terminal (+); BLACK cable to the negative terminal (-).
WARNING!
Please use the appropriate battery cable. Please refer toImportant Safety Warnings Section for the details. 
Step 3-Tight the battery cables with the M5 nuts. Do NOT place anything between the flat part of battery terminal and the battery cable ring terminal, or overheating may occur.

(See Fig. 1)

 
Step 4-Install a DC Breaker in a positive battery line. The rating of the DC Breaker must be according to the inverter's battery current (75 Amp). Keep the DC breaker off.
(see Fig. 2).

Step 5-Connect battery cables to the external batteries.
Note: For the user operation safety, we strongly recommend that you should use tapes to isolate the battery terminals before you start to operate the unit.

1)Single battery connection(Refer to Fig. 2): When using a single battery, its voltage must be equal to the Nominal DC Voltage of the unit (see below Table 1).

2) Multiple batteries in series connection (Refer to Fig. 3):
All batteries must be equal in voltage and amp hour capacity. The sum of their voltages must be equal to the nominal DC.

3)Multiple batteries in parallel connection (Refer to Fig. 4) : Each battery's voltage must be equal to the Nominal DC Voltage of the unit.

Step 6-Make sure to connect the polarity of battery side and the unit correctly. Positive pole (Red) of battery to the positive terminal (+)of the unit. Negative pole (Black) of battery to the negative terminal (-) of the unit.
Step 7-Put the covers back to the external battery terminals.
Step 8-Take the DC breaker on

Connect to Solar Panel
CAUTION: Before connecting to PV modules, please install separately a DC circuit breaker between inverter and PV modules.
WARNING! All wiring must be performed by a qualified personnel.
WARNING! It's very important for system safety and efficient operation to use appropriate cable for PV module connection. To reduce risk of injury, please use the proper
recommended cable size as below.

Step 1- Connect one cable to the positive (+) pole of solar panel and solar charger positive (+) terminal.
Step 2- Connect the other cable to the negative (-) pole of solar panel and solar charger negative (-) terminal.
Step 3- Check the solar charging indicator. If the LED lights up, it means that batteries are charged by solar power. When the batteries are fully charged or there is no solar power available, the LED will be off. (See following chart)

PV Module Selection:
When selecting proper PV modules, please be sure to consider below requirements first:
1. Open circuit Voltage (Voc) of PV modules not exceeds max. PV array open circuit voltage of inverter.

2. Max. Power Voltage (Vmpp) of PV modules should be close to best Vmp of inverter or within Vmp range to get best performance. If one PV module cannot meet this requirement, it’s necessary to have several PV modules in series connection. Refer to below table.

Note: * Vmp: panel max power point voltage.
The PV charging efficiency is maximized while PV system voltage is close to Best Vmp.

Maximum PV module numbers in Series : 
Vmpp of PV module x (X) pcs = Best Vmp of Inverter or Vmp range.
PV module numbers in Parallel : Max. charging current of inverter / Impp
Total PV module numbers = maximum PV module numbers in series x PV module numbers in parallel.

Take 1.2KVA inverter as an example to select proper PV modules. After considering Voc of PV module not exceeds 45Vdc and max. Vmpp of PV module close to 15Vdc or within 15Vdc ~ 18Vdc, we can choose PV module with below specification. 

Take 2.4KVA inverter as an example to select proper PV module. After considering Voc of PV module not exceed 60Vdc and max. Vmpp of PV module close to 30Vdc or within 30Vdc ~ 32Vdc, we can choose PV module with below specification.

6. Operation
Power On/Off
Once the inverter has been properly installed, press the power switch to turn on the unit. The unit will work automatically in line mode or inverter mode according to input utility power's status. When press the power switch again, the unit will be turned off

a). “UPS”: setting for conventional electrical appliance.
If you select this mode, the unit's input utility range will be 170~280VAC as normal home UPS. If the utility is higher or lower than this range, the unit will transfer to inverter mode automatically. And you can connect the computer systems or other precision home equipment when you select this operation mode.
b). “INV.”: setting for energy saving
If you select this mode, the unit's input utility range will be extended to 90~280VAC. If the utility is higher or lower than this range, the unit will transfer to inverter mode automatically. So, you can connect the home equipments, such as light bulb, fluorescent tube, fan, or TV on this mode.
Caution!! If you select the “INV.” mode and connect the computer to the output of the unit, the computer may reboot if the input voltage is too low to be accepted.