28142 Rev 15 TECHNICAL SPECIFICATIONS
Gentherm Global Power Technologies Page 6
3 TECHNICAL SPECIFICATIONS
This section gives the technical specifications for the Model 5220 Thermoelectric generator.
The Model 5220 Thermoelectric Generator (TEG) converts heat directly into electricity with
no moving parts. It is a reliable, low maintenance source of DC electrical power for any
application where regular utilities are unavailable or unreliable.
The model 5220 Thermoelectric Generator provides 210 Watts of electrical power from the
power unit at an ambient temperature of 20°C. This power is generated at a nominal 15 Volts,
which can then be converted to other voltages using a voltage converter. The system
provides 195 Watts of net electrical output power when equipped with a Limiter only and
provides 178 Watts with a 24 Volt Limiter/Converter.
If the generator is to be operated at load conditions that force the output voltage to vary
significantly from 15 Volts, less than the rated power will be available to the load. Figure 6
identifies the electrical parameters of the 5220 as a function of the load resistance.
The 5220 generator uses Propane (C
3
H
8
), or Natural Gas (CH
4
) fuel, and with an ignition
control module (SI), it will automatically ignite whenever gas pressure is present. The output
voltage from the generator is adjustable between 12 and 18 Volts in a 12V system, or
between 24 and 30 Volts in a 24V system. The 5220 includes a voltage-sensing relay (VSR)
that can be used to trigger alarms or other processes when an abnormally low voltage is
detected.
Mounting Stand: The 5220 can be conveniently mounted on any platform with four holes
spaced as shown in Figure 10. It is important to mount the TEG at a height sufficient to
prevent direct flooding or heavy snowfall from interfering with the flow of cooling air. A
mounting stand is available from Gentherm Global Power Technologies (GPT).
Cathodic Protection Interface (CP): The Cathode Protection Interface option provides a
termination point for cathode and anode cables up to 9 mm (00 AWG) in size, a meter to
monitor the voltage and current of the CP circuit, and an adjustable resistor to control the
output power.
Current Split (CS): A Current Splitting variation of the CP Interface is also available. The
CS version allows two CP circuits to be controlled individually from one CP Interface unit.
Surge Protection Device (SPD): The SPD combines a protective electronic device with a
dielectric isolation adaptor for the fuel line to provide increased resistance to lightning and
surges. The SPD is included with all CP systems and is optional otherwise.
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