Panasonic HIT VBHNxxxSJ53 series Manual

Contents

Panasonic HIT VBHNxxxSJ53 series Manual Manual pdf 7 page image

7WIRINGGENERAL• All wiring should be done in accordance withapplicable electrical codes.• All wiring should be done by a qualified, li-censed professional.• Wiring should be protected to help ensurepersonal safety and to prevent its damage.• Please connect each cable after confirming thepolarity of it is correct.• Connectors between modules must be inserteduntil they click.• When connecting the connectors, please makesure that they are clean and not contaminatedwith water, sand etc. Please keep in mind thatif you leave the connector in a non-connectedstate for a long period of time, contamination islikely to occur.• If an extreme load is applied to the cable, thecable may come off the junction box or theconnectors. Please be careful that there is noheavy load applied to the cable.• When fixing the cable, make sure that theminimum bending radius of the cable is 30 mmor more.• Do not disconnect terminals while modulesgenerate electricity and connect electrical loadto avoid the hazard of electrical shock.• Cable conduits should be used in locationswhere the wiring is inaccessible to children orsmall animals.• These modules contain factory installed bypassdiodes. If these modules are connected to eachother incorrectly, the bypass diodes, cables, orjunction box may be damaged.• Please contact your Panasonic AuthorizedRepresentative with questions regarding otherelectrical connections if needed.MODULE WIRING• All modules connected in series should be ofthe same model number and/or type.• The number of VBHNxxxSJ and KJ modules, thatcan be wired in series, is recommended to betwelve (12) or fewer. If connecting thirteen (13)modules and more in series, check local tem-perature conditions to ensure compliance withmaximum system voltage limitations.• Do not connect modules in parallel withoutusing connection devices that connect to ap-propriate FUSE for each series string or eachmodule. For the installation of connectiondevices, refer to the installation manual ofconnection devices.• Do not connect modules in parallel withoutmaximum over current protection.ARRAY WIRING• The term “array” is used to describe the assem-bly of several modules on a support structurewith associated wiring.• When installing a PV array, the system designmust be completed with reference to themodule electrical specifications for properselection of inverters, fuses, breakers, chargingcontrollers, batteries and other storage devices.• Modules are equipped with SMK connectors(P51-5H/R51-5) as a terminal enclosure. Usethese SMK connectors for electrical connec-tions.• Use copper wire which is insulated to withstandthe maximum possible system open circuitvoltage. For applications where wire conduitsare used, follow the applicable codes for out-door installation of wires in conduits. Minimumdiameter of wire conduit is 4 mm2. The temper-ature rating of the conductor is –40—90 °C.• In order to avoid submerging cables and con-nectors in the water, cables must be fixedeither to the module frame using cable fixingholes or to the mounting structure. Also, if thecable is not secured, an external impact mayaffect the cable from the outside, and themodule may be damaged.• Do not insert a PV cable between back side andmounting structure rail. When snow weight isapplied to the module, load may be applied tothe cable.• Verify that all fittings are properly installed toprotect cables against damage and preventmoisture intrusion.• We recommend installing a lightning rod andSPD (Surge protection device) to reduce dam-age or break-down to the PV module caused bylightning.• Check your local codes for requirements.EARTH GROUND WIRINGCompletely ground all modules.When grounding the modules, please use a hole nearthe ground mark displayed on the frame. For metalparts for grounding, consider a combination that doesnot cause corrosion due to dissimilar metal contact.

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