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Ron Stauffer Ent. WEB: www.timeforsolar.com |
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BP SOLAR MODULES Weight: 17.64
lbs. COMPONENTS: All BP Solar modules are measured under the Standard Industry Test Conditions, described below. Each module is supplied against an agreed specification within a power tolerance band, normally minus 5 watts from the rated peak power value. For further details on system sizing and module performance under field conditions any where in the world, contact BP Solar or their authorized Distribution Network. ELECTRICAL SPECIFICATIONS:
Under normal conditions a photovoltaic module is likely to experience conditions that produce more current or voltage than reported at standard test conditions. Accordingly, the values of Isc and Voc shown above and marked on the modules should be mutiplied by a factor of 1.25 when determining component voltage ratings, conductor ampacities, fuse sizes, and size of controls connected to PV output. Refer to Section 690-8 of the National Electric Code for an additional mutiplying factor of 125 percent (80 percent derating) which may be applicable. 36. Cell Modules. To boost charge a nominally 12 volt standard flooded lead acid battery, the terminal voltage must be taken to a high voltage of typically 15 volts at 20 degrees C. At this voltage the battery will be gassed sufficiently to remove stratification and to ensure cell equalization. In some applications it is necessary to ensure that the boost voltage is reached as quickly as possible even at high temperatures. To ensure that this happens most modules are manufactured with 36 silicone solar cells connected in series which yield approximately 17-19 volts at the maximum power point. The additional 2 volts are required to overcome cabling and blocking diode losses. However, systems using 36 cell modules must be equipped with a charge controller to ensure that the batteries are not over charged during periods of surplus energy.
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