WEL/ IM/ 05/ 18.03.2016
12
•
When reverse currents can exceed the value of the maximum protective fuse, a properly rated and
certified over current device (fuse or circuit breaker) must be connected in series with each Module or
string of Modules.
•
Match the polarities of cables and terminals when making the connections; failure to do so may result in
damage to the Module.
•
Connecting Modules in reverse polarity to a high current source, such as a battery, will destroy the
bypass diodes and render the Module inoperative. Bypass diodes are not user replaceable.
•
The junction box, cable and connectors shall not be altered in any case. Modules with a suspected
electrical problem should be returned to WAAREE for inspection and possible repair or replacement as
per the warranty policy shall be provided by WAAREE.
CABLE PROTECTION
•
The values of short-circuit current and open-circuit voltage marked on this Module should be multiplied
by a factor of 1.25 when determining component voltage ratings, conductor current carrying capacity,
fuse sizes and size of controls connected to the PV output.
•
Secure the cables to the mounting system using UV-resistant cable ties.
•
Protect exposed cables from damage with appropriate precautions (e.g. locate them within plastic
conduit).
•
Avoid exposure to the direct sunlight.
•
Ensure that the cables will be away from areas where water can form puddles.
•
When disconnecting wires under load, an electric arc may result. Such arcs may start fires and may
otherwise create problems. To disconnect the PV system while under load, turn off the inverter first and
then switch on the DC-circuit breaker.
DIODES
•
BYPASS DIODES
When the Modules are shaded partially, it may cause reverse voltage across cells or Modules, because the
current from other cells in the same series is forced to flow through the shaded area. This may cause
undesirable heating to occur. 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. The use of a diode to bypass the shaded area can minimize both heating and array
current reduction.
Note: -
All WAAREE Modules are equipped with factory installed bypass diodes. The factory installed diodes
provide proper circuit protection for the systems within the specified system voltage, so that you do not need
any other additional bypass diodes. If your system specifications require you to add or change diodes, please
contact authorized WAAREE representative for recommendations for the proper diode type.
