OM226142 rev C
12
Picture 6 – Operation with non-linear load
2.2.2 Overload management
Inverter can provide continuously 100% of nominal load and can tolerate overload
conditions up to 125% for 10 minutes or 150% for 1 minute.
Peak conditions such as take-off of engines or magnetic parts are managed limiting the
output current to 200% for 5 cycles, than reducing to 125%.
Any times output power grows above 100% the inverter keeps feeding the loads, while the
microprocessor activates the “thermal image” algorithm (technical figure) to calculate
thermal image based on output current and duration of the overload in function of the time.
User loads are powered by inverter output up to the end of maximum allowed time, then
the static bypass switches to emergency line without interruption of output power.
Picture 7 – Thermal image characteristic
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