# PV string-voltage screening
# Scope: Linear open-circuit temperature correction; coefficient supplied per kelvin.
# Status: illustrative worked example; engineering review pending.
# Inputs are example values. Checks are editable example requirements, not standards.

panels = 8
openVoltage = 40 V
coefficient = -0.003 K^-1
temperatureDifference = -30 K

coldVoltage := panels*openVoltage*(1+coefficient*temperatureDifference) [V]

check controller voltage budget: coldVoltage <= 400 V

scenario alternative: panels = 6.4