6.4 Diodes
When a module is covered by a shadow, a reverse bias voltage may occur, possibly leading to
hot spot. The function of diode is to reduce adverse effect of heating and current decrease arising
from such circumstances.
All Linyang modules are equipped with diodes, providing proper circuit protection for the
modules.
6.5 Cable protection
The permitted solar cable is single-cord cable, at the grade of 2.5-10mm2 (814 AWG), 90°C;
also, it is with proper insulation performance so that it can withstand the possible maximum open-
circuit voltage (e.g. TUV 2PfG1169). It is necessary to select appropriate conductor specifications
to reduce the voltage drop. The conductor shall be made of copper.
Apply ties with UV resistance to fix cables onto the installation system. Take proper measures
to protect exposed cables from damage (e.g. place them into plastic bushings with UV- and aging-
resistance). Avoid directly exposing cables to direct sunlight. When fixing a junction box
conductor to the bracket, the bending radius of conductor shall not be less than 60mm, and the rated
current shall exceed 10A. Special Caution: The temperature ceiling of cable is 85°C.
7 Grounding
Equipment grounding: There is no exposed conductor in the frameless double-glass PV
module; thus, grounding is not required in accordance with NEC codes.
The framed modules need to be grounded (although it has been confirmed that the modules
meet safety level 2) to ensure that the grounding method meets local electrical directives and
regulations.
Earth assembly has a pre-earthing hole in its edge of use. Correct earthing method is use of
suitable earthing conductor to connect assembly edge to all metal structural parts at the other end.
Such earthing conductor shall adopt copper, copper alloy, or other suitable material. Earthing
conductor must be connected to the soil using suitable earthing electrode. The method shown below
shall be used to ensure connection of positive electrode to assembly edge without scratching edge
oxide film.
Spring washer
Flat washer
Star washer
(SS304)
Copper wire
Hexagonal bolt
Assembly edge
Nut
