Light Duty Technology Cost Analysis, Power - US Environmental ...
Light Duty Technology Cost Analysis, Power - US Environmental ...
Light Duty Technology Cost Analysis, Power - US Environmental ...
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Figure D-67: Main Housing and Electronics<br />
The main housing electrical cavity which houses all of the electronic components is filled<br />
with potting compound. Two (2) Printed Circuit Boards (PCBs) and a separate IGBT<br />
mount plate (heat sink) are located inside the housing along with various coils, terminal<br />
blocks, and a capacitor (Figure D-68). Components are attached to the PCBs via a<br />
combination of processes which includes surface mount (fully automated), thru hole (both<br />
automated and manual) and threaded fasteners. All circuits passing through the housing<br />
are sealed. The PCBs and cavity are fully potted and covered with a stamped steel plate.<br />
Figure D-68: Printed Circuit Boards (PCBs) and IGBT Heatsink Plate<br />
A High Voltage Low Current (HVLC) pigtail (Figure D-69) is attached to the<br />
compressor and connected to the High Voltage (HV) harness in the engine compartment.<br />
As with the main harness, the pigtail contains EMI shielding and safety interlocks for<br />
power disconnect during service.<br />
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