Taurus TAU-450W-144M, Руководство по установке, Страница: 16 / 24

INVERTER SELETION AND COMPATIBILITY
-When installed in systems governed by
IEC regulations, Taurus Renovables Solar
modules normally do not need to be electro-
nically connected to earth and therefore can
be operated together with either galvanically
isolated (with transformer) and transformerless
inverters.
-Potential Induced Degradation (PID) is
sometimes observed in PV modules due to a
combination of high humidity, high temperature
and high voltage. PID is most likely to cause
degradation under the following conditions:
-A Installations in the warm and humid climates
-B Installation close to a source of continual
moisture, such as bodies of water
-To reduce the risk of PID, we strongly suggest
that modules feature Taurus Renovables So-
lar’s Anti-PID technology, which can be applied
to any Taurus Renovables product. Alternati-
vely, we recommend the use of an inverter that
includes a transformer as well as proper groun-
ding of the negative DC leg of the PV array.
-Choose inverters with isolation transformers in
hot and wet areas (such as shores, wetlands),
to ensure proper module function under positi-
ve voltage.
BLOCKING DIODE
-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:
-Rated Average Forward Current IF(AV) above
the maximum system current at the highest
module operating temperature.
-Rated Repetitive Peak Reverse Voltage VRRM
above the maximum system voltage Vmax at
the lowest module operating temperature IEC
Vmax = 1000V ULVmax = 600V.
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.
-Bypass Diode Model: 25PV045
MAINTENANCE AND CARE
-A well designed solar system requires minimal
maintenance; however, system performance
and reliability can be improved by taking some
simple steps.
-Maintenance should be carried out at least
once a year by trained personnel.
-Trim any vTaurus Renovablestation which may
shade the solar array thus impacting perfor-
mance.
-Check that mounting hardware is properly
tightened.
-Inspect all cables to verify that connections
are tight; the cables are protected from direct
sunlight and sited away from areas of water
collection.
-Check that all string fuses in each non/earthed
pole are operating.
-In the event that the solar modules need to be
cleaned then clean the module use a soft cloth
together with a mild detergent and clean water.
Take care to avoid severe thermal shocks
which might damage the module by cleaning
modules with water which has a similar tempe-
rature to the modules being cleaned.
-On large systems, the benefit of cleaning
dirt and debris from the array is a trade-off
between the cost of the cleaning, increased
energy production as a result of this cleaning,
and the time for the re-soiling of the modules
after cleaning.
-If you are unsure whether the array or section
thereof needs to be cleaned then first select an
array string that is particularly soiled then
-Measure & record the inverter feed in current
from that string
-Clean all modules in the string
-Measure the inverter feed in current again and
calculate the % improvement from cleaning
-If the improvement is less than 5% then it is
normally nor worth spending the expense on
cleaning
-The above verification should only be carried
out when the insolation is effectively constant
(clear sky, strong sunshine, no clouds)
-The back surface of the module normally does
not need to be cleaned but, in the event this is
deemed necessary, avoid the use of any sharp
projects that might damage the penetrating the
substrate material.