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Global Power Technologies 25
S-8500
APPENDIX
APPENDIX A
TECHNICAL TERMS & DEFINITIONS
High Power Limiter
: Protective electronics modules designed to maintain optimum condi-
tions, protect the power unit and regulate the output voltage.
Open Circuit Voltage:
Voltage at the terminals of the power unit when no current is flow-
ing through the power unit, i.e. open circuit, which is related to the temperature across the
thermoelectric materials inside the power unit.
When a power unit lead is suddenly disconnected, breaking the circuit to the load, the volt-
age measured across the power unit leaps up to a new value. This is known as the momen-
tary open circuit voltage (V
oc
).
Power Unit (PU):
The hermetically sealed portion of the TEG that contains the thermoelec-
tric materials.
Rated Power:
Model S-8500 TEG produces 520 W when operating in an ambient tempera-
ture of 20 ºC (68 ºF).
Set-up Voltage:
V
set
: Voltage from the power unit for a specific ambient temperature when
the power unit is operated in a known state, which is proportional to set-up power. Fuel flow
to the burner is adjusted so that proper voltage and necessary temperature difference within
the power unit maintained, delivering the required power.
Summary of Contents for S-8500
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Page 66: ...Global Power Technologies 60 S 8500 Figure 31 DC DC Converter with CP Panel wiring schematic ...
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