FIRST SOLAR
First Solar Series 6 CuRe Modules | USER GUIDE
3 of 26
FIRST SOLAR, INC. | MPD-00600-06-C REV 1.0
The conditions necessary to trigger reverse current overload (RCOL) do not occur in typical operating modes
of a properly installed PV system. The system designer should ensure that modules are not subjected to
RCOL. The use of GFDI devices or other advanced fault monitoring techniques can significantly reduce the
likelihood of sustained ground faults. Properly selected and installed string fuses can increase protection
against RCOL.
DANGER
Reverse currents
higher than the rated values for a First Solar module, may result in module
failure, including module breakage due to RCOL. Extreme and continuous RCOL conditions may
cause a fire or create electrical shock hazards. To avoid RCOL:
►
Maintain equivalent voltage in parallel strings by installing an equal number of modules
per string within the same source circuit. Failure to install modules with balanced voltage
in parallel strings can result in voltage imbalance.
►
Incorporate measures to protect modules against RCOL for connections of parallel strings.
Modules damaged because of system-induced RCOL are not covered under the First Solar Module
Warranty. Module warranty eligibility is not affected by the presence, absence, or type of reverse current
protection used in a system design.
CAUTION
Wear safety glasses and cut-resistant gloves when working with non-interconnected modules or
system components.
Wear electrically rated PPE when working with interconnected modules or system components.
Select PPE based on work consistent with local and/or national standards.
WARNING
To avoid risk of fire, do NOT interconnect Series 6 CuRe modules with other FS Series modules
(e.g. – Series 4, Series 3, or Series 2) within the same interconnected string, inverter, or
Maximum Power Point Tracker.
