5
5.4.2 System mount
1. Solar modules produce electrical energy
when light shines on their front surface.
The DC voltage may exceed 30V. If
modules are connected in series, the total
voltage is equal to the sum of the individual
module voltage. If modules are connected
in parallel, The total current is equal to the
sum of the individual module current.
Do
not disconnect during load connection for a
removable connector.
2. Keep children away from the system while
transporting and installing mechanical and
electrical components.
3. Completely cover the module with an
opaque material during installation to keep
electricity from being generated.
4.
Do not wear metallic rings,
watchbands,ear,nose,lip rings or other
metallic devices while installing or
troubleshooting photovoltaic systems.
Only use approved insulate tools for
electrical installation work.
5. Abide with safety regulations for all other
components used in system, including
wiring and cables,connectors,charging
regulators,inverters,storage batteries and
rechargeable batteries,etc.
6. Use only equipment,connectors,wiring and
support frames suitable for use in a solar
electric system. Always use the same type
of module within a particular photovoltaic
system.
6 ELECTRICAL INSTALLAIONS
6.1 Bypass diodes
Modules contain bypass diodes when shipped
from the factory.
If the service personnel need to replace the
damaged bypass diodes, at least one diode
should be installed in each string.
Only qualified personnel are permitted to install
the bypass diodes.
Open the cover of junction box and install
diodes in each two conductors. Only diode with
the same model type is permitted to be used.
6.2 Over current protection
Whenever necessary to comply with local
codes, use a fuse or circuit breaker, rated for
the maximum series fuse rating of the module
and the system voltage.
Always fuse the connections at the battery for
safety. Refer to the module rating label (on
module) for recommended fuse size. Also, refer
to the charge controller owner’s manual.
When the modules are connected in parallel,
each module or each string of module shall be
provided with a fuse with the maximum series
fuse rating as indicated in “Electrical
Specification”.
All electrical components should have ratings
equal or greater to the system rating. Do not
exceed the maximum allowable system voltage
as listed on the module label.
