www.znshinesolar.com
Document No.
：
QES/ZX-RD-III032A
- 24
ZNSHINE SOLAR recommends using lightning protection devices which are complied with local laws and
electrical regulations.
All the above instructions must be followed to meet ZNSHINE SOLAR warranty conditions.
3
、
Bypass secondary
If PV module part by shadow block, which can lead to reverse voltage related to solar cells, PV modules in
other unaffected battery string or other PV modules in the system and current will force through keep out part of
the power loss and heat affected cell. When the PV module is connected in parallel with the bypass diode, the
current in the system will flow directly through the diode, so as to bypass the blocked part of the PV module and
minimize the heating degree and power consumption of the PV module.
Each module has three diodes. Please do not try to open the junction box to replace the diode, or even when
the diode problem, please do this work by professionals.
4
、
Grounding
All PV module frames and mounting brackets must be properly grounded in accordance with the applicable
national electrical code.
Correct grounding is achieved by continuously connecting the PV module frame and all metal modules
together using the appropriate grounding conductor. The grounding wire may be copper, copper alloy or other
materials that can be used as conductors and meet the requirements of the national electrical code. It is
recommended to use the copper wire (4-14mm
2
or AWG 6-12) as the grounding wire. The signal”
” can be
found at the grounding hole position. The ground wire must also be connected to ground through a suitable
ground electrode. The tight connection of all the joint point should be ensured.
On a grounding hole with a diameter of φ4 mm, use a separate grounding wire and related accessories to
connect the aluminum frame of the solar PV module and connect the grounding wire to the ground. The grounding
uses the M4*12mm bolts and M4 nuts, star washers and plain washers, this ensures that the modules are firmly
grounded. You can find the corresponding product drawing in module datasheet to know the detailed number,
size and position of the grounding holes. The torque applied to ground fixation is 4N·m
～
8N·m.
When grounding, each module can be grounded directly or in series or in parallel. If you choose the latter two
options, it is recommended that the maximum number of modules connected in parallel should not exceed four,
and in series should not exceed eight.
In addition to use the grounding hole, you can also choose the following grounding ways:
（
1
）
Grounding by unused mounting holes
（
2
）
Other professional grounding devices
The electrical contact points of all the above grounding methods should penetrate the anodized film of the
aluminum frame. PV modules can be grounded by other grounding devices, which must be reliable and certified.
The manufacturer's requirements should be followed.
