PV. Conection

PV Connection (Only apply for the model with solar charger).

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. 
• 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.  

 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 can not 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 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 * PV module numbers in
parallel .

Take 1KVA inverter as an example to select proper PV modules. After considering Voc of PV module not exceeds 50Vdc and max. Vmpp of PV module close to 15Vdc or within 13Vdc ~ 18Vdc, we can choose PV module with below specification.