- Do not install the module in a location with extreme hail and/
or snow.
- Do not install the module in a location where it could be
immersed in water or continually exposed to water from a
sprinkler or fountain.
- Do not install the module in a marine environment and/or
area where salty wind hit directly. It is recommended that the
module be installed at least 500m from the sea.
- Environment temperature -20°C to 40°C.
- Operating temperature -40°C to 85°C.
2.2) Orientation and tilt for modules installation
• Solar modules produce the max power when they are
pointed directly at the sun. In order to achieve maximum
annual yield, optimum orientation and tilt of PV modules is
necessary. The modules, which connected in a system, must
be in same orientation and tilt, otherwise, it will lose the pow-
er because of the differences of sunshine radiation.
• The modules must be facing the north in the south hemis-
phere, and facing south in north hemisphere.
• For off-grid installations where the Jetion modules are at-
tached to a permanently structure, the Jetion modules
should be titled for optimum winter performance. As a rule,
if the system power production is adequate in winter, it will be
satisfactory during the rest of the year. The module tite angle
is measured between the solar modules and the ground.
Fig. 1: Module Tilt Angle
RECOMMENDED TILT ANGLES FOR A FIXED SYSTEM
SITE LATITUDE IN DEGREES
FIXED TILT ANGLE
0° to 15°
15°
15° to 25°
SAME AS LATITUDE
25° to 30°
LA 5°
30° to 35°
LA 10°
35° to 40°
LA 15°
40° +
LA 20°
Table 1: Module Tilt Angle
2.3) Materials requirements
• Support structure
The support structure of the module is made of abrason
proof, corrosion resistant and UV resistant materials which
corresponds to the appropriate structural requirements. The
mounting structure and the module attachments must be
designed in accordance with the local wind and snow loads.
• Bypass diode
Partial shading of an individual module can cause a reverse
voltage across the shaded module. Current is then forced
go through the shaded area by the other modules. When a
bypass diode is wired in parallel with the series string, the
forced current will flow through the diode and bypass the
shaded module,thereby minimizing module heating and array
current
losses.
• Support structure
In a system that uses a battery, blocking diodes are typically
placed between the battery and the module output to prevent
battery discharge at night and rainy weather. Diodes that are
used as blocking diodes must have a:
a) Rated Average Forward Current［[IF(AV)]［above the maximum
system current at he highest module operating temperature.
b) Rated Repetitive Peak Reverse Voltage ［(VRRM)［ above the
maximum system voltage ［(Vmax)［ at the lowest module
operating temperature［(IEC:［Vmax=1000V;［UL:［Vmax=600V).
• Battery
When solar modules are used to charge batteries, the battery
must be installed in a manner which will protect the perfor-
mance of the system and the safety of its users. The battery
should be away from the main flow of people and animal
traffic. Select a battery site that is protected from sunlight,
rain, snow, debris, and is well ventilated. Most batteries
generate hydrogen gas when charging, which is explosive.
Do not light matches or create sparks near the battery bank.
When a battery is installed outdoors, it should be placed in
an insulated and ventilated battery case specifically designed
for the purpose.
• Cable and other components
a) Ensure that all components meet the requirements of the
system´s maximum voltage, current, moisture and tempera-
ture when they are exposed to sunlight. We recommended
that all wiring and electrical connections comply with the
appropriate national electrical code.
b) Under normal condition,a photovoltaic module is likely to
experience conditions that produce more current and/or
voltage than reported at standard test conditions.
Accordingly, the values of Isc and Voc marked on this module
should be multiplied by a factor of 1.25 when determining
component voltage ratings, conductor current ratings, fuse
sizes and size of controls connected to the PV output. Refer
to section 690-8 of the U.S. National Electric Code for an
additional multiplying of 1.25 which may be applicable.
c) Only cables with one conductor are to be used.
Module
Sunlight
Tilt Angle
Horizontal
