Module Grounding - BenQ PM048M00 Series Installation Manual

• Do not concentrate sunlight or other artificial light sources onto the module.
• Use tools duly coated with insulating material while working with the modules.
• Always work under dry conditions.
• Do not install the modules where there may be flammable gases or vapors, since
sparks may be produced.
• Take care to avoid electric discharges when installing, wiring, starting up or carrying
out maintenance work on the modules.
• Do not touch the terminals while the module is exposed to light.
• Install with suitable protection to redirect a discharge of 30 or more direct current
volts to if delivered any person on the installation team.
• Please prevent adherent of oil such as paraffin liquid, animal oil and vegetable oil form
molding parts. It may be cracked or broken and loose the performance of Junction
Box and connectors.

4.2 Module Grounding

BenQ Solar PV modules have a clearly marked grounding hole on each side of the frame for
inserting the ground contact. The grounding screw and bolt are usually sold separately from
the mounting equipment.
Please make sure the grounding screw breaks the anodized surface of the module frame
around the holes. Another option is to scratch off the anodizing before the grounding
connection is made. The frame is fully insulated by the anodizaiton process, so this step is
essential for proper ground contact..
An anti-oxidation compound should be applied to the bare aluminum surface for protection.
Use a layer of insulation if the support structure material is different than the frame material
(aluminum) to prevent galvanic corrosion.
If the support structure is a non conductor, a dedicated ground cable must be connected to
each module frame by means of a suitable fastening system. The fastening system must be
splicedwith a cable that has a minimum diameter of 2.5mm
module is grounded properly per local municipal requirements. The recommended assembly
of grounding screw is shown below in Figure 5.
Note: When using a Tapping Screw for grounding, the cap washer is used for buffer only and can substituted by
any M4-M4.5 washer.
2
.. Please make sure that each
17