How to mount a bifacial PV module?

For frameless PV module, the clamp must overlap the module frame at maximum 15 mm (0.59 inch). The applied value of torque should refer to mechanical design standard and the bolt type customer is using, for example: M8: 14-18 N•m. Bifacial modules can be mounted by bolts or clamps. The mounting method and maximum test load are shown as follow.

How LONGi Solar module junction box works?

LONGi solar module junction box contains bypass diode which is in parallel connection with the cell string. If hot spot occurred, the diode will come into operation to stop the main current from flowing through the hot spot cells in order to prevent module over-heated and performance loss.

How do I design a photovoltaic and solar hot water system?

Provide an architectural drawing and riser diagram for the homeowner showing the planned location for future photovoltaic and solar hot water system components. Space requirements and layout for photovoltaic and solar water heating system components should be taken into account early in the design process.

What is the clamp size for a PV module?

For framed PV module, the clamp must overlap the module frame at least 8 mm (0.32 inch) but no more than 11 mm (0.43 inch). The cross section of clamp can be adjusted if the module is securely fastened. For frameless PV module, the clamp must overlap the module frame at maximum 15 mm (0.59 inch).

Can PV modules produce DC current under sunlight?

PV modules can produce DC current under sunlight. Any contact of exposed metal at module's wiring parts may result in electrical shock or burn. Any contact of 30V or larger DC Voltage can be fatal. In case of no connected load or external circuits, modules can still produce voltage.

What happens if you disconnect a photovoltaic module?

Contact with a DC voltage of 30V or more is potentially hazardous. When disconnecting wires connected to a photovoltaic module that is exposed to sunlight, an electric arc may result. Such arcs may cause burns, may start fires and may otherwise create problems. Therefore, be extremely careful!