Based on operational safety of the fuse, the configuration of the solar panels maximum
power can not exceed this I-V curve. 
If the user uses an external fuse, the user shall ensure that the fuse at 1000Vdc above
fusing characteristics. 
Appendix
Appendix A: I-V curve limitation
Appendix A : I-V curve limitation for fuse
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Appendix A: I-V curve limitation