TALESUN TP672M-315, Installation Manual

4.4 GROUNDING: 

·  Although the modules are certified to safety class II, it is recommended that they 

be grounded and the module installation complies with all local electrical codes 
and regulations.

·  The earth grounding connection should be made by a qualified electrician.
· Connect module frames to each other using adequate grounding cables 

(recommended size 4-14 mm

2

, copper wires). 

·  The bolts, nuts, flat washers, lock washers or other relevant hardware should be 

made with stainless steel.

·  Other grounding methods can be acceptable, provided they comply with all local electrical codes and regulations.
·  If the support frame is made of metal, the surface of the frame must be electroplated and have excellent conductivity. 

A grounding kit with M4 size SS cap bolt, M4 size SS flat washer, M4 size SS cup washer and M4 size SS nut with 
teeth is used to attach a copper grounding hole on the frame. Attach the wire between the flat washer and the cup 
washer. Ensure the cup washer is between the frame and wire with concave side up to prevent corrosion due to 
dissimilar metal. Tighten the bolt securely using the SS nut with teeth. A wrench may be used in this application. 
The tightening torque is 1 Nm.

5  COMMISSION AND MAINTENANCE

5.1  BLOCkING DIODES AND BYPASS DIODE 

·  Blocking diodes prevent current flowing from the battery to the module when no electricity is being generated. It 

is recommended to use blocking diodes when a charging regulator is not used. Your specialist dealer can advise 
you regarding the suitable types.

·  In systems with more than two modules in series, high reverse current can flow through cells that are shaded 

partially or outright when part of a module is shaded and the rest is exposed to the sun. These currents can 
cause the affected cells to get very hot and could even damage the module. To protect module from such high 
reverse currents, by-pass diodes are used in modules. All modules rated greater than 55 Watt have bypass 
diodes already integrated in the junction box. In the unlikely event of diode failure, it can be easily replaced; 
however, doing so will void warranty unless this exchange is made by an authorized person.

·  Protect yourself from electric shocks while debugging or maintaining the solar power system.

5.2 TROUBLESHOOTING

DANGER!  Life danger due to electric shock! 

·  Please do not attempt to correct problems on your own!
·  In case of problems or damaged modules (for example, glass breakage, damaged cables)  
   please contact your installer or the Talesun Technical Customer Service.