4
MAINTENANCE OF THE PHOTOVOLTAIC MODULES
Photovoltaic modules requiring very little maintenance due to their own design, with no moving parts and with an interior cell circuit soldering isolated
from the environment by protecting materials. At the same time the quality control performed by Korax Solar is very strict.
Maintenance may include one or several of the following steps:
Regular cleaning of the module
Visual inspection of possible internal degradation of the module sealing
Check out of the condition of electric connectors and wiring
Occasionally, checking out the electrical characteristics of the module
Regular cleaning of the modules
Dirt piled up on the transparent surface of the module reduces its performance and may cause reversal effects similar to those caused by shadows. The
layers of dust that reduce evenly the sun intensity are not dangerous and power reduction is not usually significant. In many cases the rainfall can
reduce or remove the dirt to an acceptable level.
The spot dirt is advisable to remove by occasional cleaning by washing the modules with water or some nonabrasive detergent.
Visual inspection of the module
The aim of the visual inspection of the modules is to detect the possible faults, like broken glass and/or corrosion of the circuits elements, mostly due to
humidity leakage at the damaged insulation spots or glass breakage. Consult your area dealer or Korax Solar in case of serious damage.
Check out the connections and cabling
The regular check-out of connections tightness and cable conditions considered as a preventive maintenance step.
SPECIFICATIONS/PRODUCT OVERVIEW
PHYSICAL AND ELECTRICAL CHARACTERISTICS
KS-90
KS-180
KS-180L
KS-240
PHYSICAL
Dimensions
1224 x 545 x 39.5 mm
1224 x 1047 x 39.5 mm
1600 x 800 x 39.5 mm
1657 x 977 x 39.5 mm
Weight
9 kg
15 kg
15 kg
19 kg
Number of cells
36
72
72
60
Size of cells
5”
5”
5”
6”
ELECTRICAL (1000 W/m
2
, 25
o
C cell, AM 1.5)
Nominal voltage (Vn)
12 V
24 V
24 V
24 V
Maximum power (Pmax)
90 Wp
180 Wp
180 Wp
240 Wp
Short-circuit current (Isc)
5,23 A
5,23 A
5,23 A
8,39 A
Open circuit voltage (Voc)
21,7 V
43,42 V
43,42 V
37,44 V
Maximum power current (Imax)
4,90 A
4,90 A
4,90 A
7,88 A
Maximum power voltage (Vmax)
18,61 V
37,25 V
37,25 V
31,2 V
DESIGN
Cells
Monocrystalline Si, textured and covered with antireflection layer
Contacts
Redundant contacts on each cell for circuit reliability
Laminate
EVA (Ethylene-vinyl acetate)
Front face
Tempered glass with improved light transmission
Rear face
Tough multilayered backsheet Tedlar
Frame
Anodised aluminium
Connection boxes
IP 65 with built-in bypass diode
Cable cross section
4 mm
2
Connection box
Pression screw with possibility of soldering, MC optional
PHYSICAL AND ELECTRICAL CHARACTERISTICS
