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Set-up Voltage: V
which is proportional to set-up power. Fuel flow to the burner is adjusted so that proper
voltage exists, necessary temperature difference within the power unit maintained, to
deliver required power.
Open Circuit Voltage: Voltage at the terminals of the power unit when no current is
flowing, 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
voltage measured across the power unit leaps up to a new value. This is known as the
momentary open circuit voltage (V
In the case of the model 5220 do not allow V
can be damaged.
Measured V
set
Required V
set
CP (Cathodic Protection): Thermoelectric generators are used in impressed current
systems for Cathodic corrosion protection of metallic structures such as pipelines.
CP Interface System: An assembly of electrical components system that acts as an
interface between the TEG and the CP load, which also provides for adjustment and
monitoring of power to the CP load.
Limiter/Converter (L/C): A specific electronic device attached between the generator
and the load that converts one level of DC voltage to another, and limits the power unit
voltage.
Manual Shutoff Valve: A manually operated valve in the gas line for the purpose of
completely turning on or shutting off the gas supply to the TEG.
Solenoid Valve (SV): A electrically actuated valve that controls the gas supply to the
burner. This Valve is operated by the Ignition Control Module.
Gentherm Global Power Technologies
5220
Voltage from the power unit for a specific ambient temperature,
set
: V
measured across the power unit using a voltmeter.
set
: V
needed to achieve rated power for the present ambient temperature.
set
). The voltage will continue to climb from that level.
oc
to exceed 27.0 volts, otherwise, the TEG
oc
28142 Rev. 14
1-2
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