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Installation and Operation Guide SOLECTRIA XGI 1000 (Rev D)
3.5.2.3 String Mismatch
To ensure optimal performance the number of modules per string should be equal within a given MPPT zone
(Individual Mode) or across all zones (Parallel Mode). Individual Mode and Parallel Mode must be specified
when ordering the wiring box.
Unequal String Lengths and Module Mismatch
Unequal string lengths and significant module mismatch can result in the flow of current
between strings connected in parallel. Opening fuses under load can cause a hazardous
condition. It is strongly recommended to avoid unequal string lengths and module
mismatch.
Figure 3-17 Mismatched String Sizes within a Zone Zone or Inverter
DOCR-070733-D
Figure 3-16 Matched String Sizes within a Zone or Inverter
Page 29 of 86
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