Grounding - Solahart Solahart475DH1 Installation Manual

falling on the ground or the roof. Do not plug or
unplug the connectors when the PV module is
in live state. When it is necessary to remove the
connectors, ensure that the PV module is not in
working condition and that professional
unlocking tools and safety measures are used.
Direct dragging and pulling is forbidden.
 The junction box of the PV module contains
bypass diodes connected in parallel to the string of
the PV module. The bypass diode in the junction
box prevents module degradation due to shading or
covering. Refer to the junction box diode
specification provided in the relevant product
datasheet for more details. I When the localized hot
spot phenomenon occurs in the PV module due to
partial shading or coverage, the diode in the
junction box will start to work, so that the module
current will no longer flow through the hot spot
cell, to limit the heat and loss of the PV module.
When a diode failure is suspected or found, please
contact Solahart team and do not attempt to open
the junction box cover.

6.3 Grounding

The PV modules are designed with an anodised,
corrosion-resistant aluminum alloy frame as a rigid
support. To ensure safety and to avoid lightning
strikes and electrostatic damage to the PV modules,
the PV module frame must be earthed. The earthing
device must be in full contact with the interior of the
aluminum alloy of the frame, penetrating the surface
oxide film. The following is the specific grounding
method, as shown in Fig. 15.
15
Fig. 15 Grounding the aluminum frame with copper wire
 The grounding requirements must be checked in
accordance with the applicable regulations and
standards before work is started.
 Use the marked 5.5 mm grounding holes to ground the
anodized frame. Use one M5 nut, two M5 cut washers,
one M5 plain washer, one M5 spring washer, and one
M5 bolt and the copper wire. All nuts, bolts, and
washers shall be of type M5 and made of stainless steel
(Fig. 15). Grounding hole location on the panel frame
is shown in Fig. 16 below.
Fig. 16 Grounding hole location on panel frame