28142 Rev 15 PROCESS DESCRIPTION
Gentherm Global Power Technologies Page 17
The minimum requirement for the 5220 is a limiter operating at a nominal voltage of 14 V.
This limiter is a shunt-type voltage limiter that regulates the output voltage of the generator.
The main components of the Limiter are shown in Figure 6, and explained below.
Protective (Voltage) Limiter: A voltage limiting circuit is incorporated into the 220 W
Limiter, which limits input voltage helping achieve optimal performance from the TEG. It is
factory set to activate at 14.1 V for the model 5220 TEG. Unless the generator is equipped
with an optional CP System. In this case, the voltage is factory set at 17.5 V.
Current Limiter: Over load protection triggers when the load draws excess current. The
result is a proportional drop in output voltage, fold-back current limiting.
Short circuit protection is also designed into the 220 W Limiter. A diode in series with the
positive output prevents current from flowing back through the converter when the generator
is shut off.
CAUTION!
If extended short circuit durations are anticipated, an
in-
line fuse should be placed on the output of the
limiter converter.
Figure 6 – 220-Watt Limiter Assembly
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