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ELECTRICAL INSTALLATION
SERIES
CONNECTION
PARALLEL
AFTER
SERIES
Connector
* Electrical performance parameter of module, such as nominal value of Isc、Voc and Pmas has ±3% random error
compared with value of STC. The standard testing environment of module is: Irradiance 1000/m
25℃、Spectrum AM 1.5.
* Normally, the current and voltage of module, will be a little higher compared with the value under STC, so when
confirmed the associated parameters of solar system accessories, such as rated voltage、cable capacity、fuse
capacity and module power, the corresponding short circuit current and open circuit voltage should be amplified by
1.25 times.
* The maximum number of modules per series string must be calculated according to the requirements. The value of
the Voc in the local expected minimum temperature cannot exceed the maximum system voltage value specified of
the module (According to IEC61730 safety test, the maximum system voltage of DAH Solar Module is DC1000V) and
other DC electrical components require values.
* The Voc correction factor can be calculated according to the following formula: CVoc=1-βVoc×(25-T), T is the
minimum ambient temperature expected for the installation of the system, β (% / ℃) is The temperature coefficient of
the selected module Voc (according to the corresponding module data sheet).
* If the reverse current which probably exceed the maximum fuses current of module passed through the module, the
modules must be protected by an equivalent current protection device. If the number of parallel is more than or equal
to 2 strings, there must be equipped an overcurrent protection device on each series of modules.
system voltage (DC) of the modules is
* When Module exposed to sunshine or other lights, it can produce DC, in this case it may cause electric shock hazard
if touch electrical parts.
* Focus sunlight on to PV module via mirror or lenses is prohibited.
* Temples glass and backsheet have protective effect, broken PV modules have electrical risks(electric shock and
burnt), this kind of modules can not be fixed or repaired, should be replaced in time.
* Under nominal outdoor condition, the current and voltage produced by module are different with datasheet. The
parameters in datasheet is tested under STC condition, therefore when determining other components rated voltage,
wire capacity, fuse rate, controller capacity and PV module power output relative datas of PV system, please refer to
the short circuit current and open circuit voltage of the PV module, and design and install the system in 125% of the
value as well.
* In case to lower electric shock or burnt risk, it's better to cover the PV modules by opaque material when installing.
、Cell temperature
2
* PV array installation job should be operated under isolating sunlight condition, installation and maintenance also
should be handled by professionals.
* If batteries bank equipped in the PV system, it should comply with battery supplier's suggestion.
* PV modules shall not replace rooftop and wall material, partial replacement is also not allowed.
* Don't install PV modules in the area where may has combustible gases.
* Touch PV module's electrical part by hand directly is prohibited, should use insulating tools to handle the electrical
connecting.
* Don't dismantle any components of DAH Solar PV module personally.
* Don't lift modules by junction box or connecting cables.
* All the modules system should be connected to ground, if without special stipulations, please refer to International
Electrical Standard or other International Standards.
* Please do not stand, sit, lying on modules, it may damage modules and also have injured risks.
* Same size and specification models modules can only be connected together.
* During delivery please make sure transport tools or modules are not subjected to large vibrations, vibrations may
cause modules damage or cells microcrack inside of modules.
* During all the delivery,don not allow modules to fall onto ground from transport tools, house or hand, this will
damage modules or cells inside.
* Don't wipe the module with corrosive chemicals.
* When loads are working, please do not disconnect the modules.
WARNING
The maximum permitted
1000V DC(Option 1500V DC)
PV module
application class is A
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