![background image](http://html1.mh-extra.com/html/york/lvd-270/lvd-270_operation-manual_912297026.webp)
Figure 7: OptiSpeed system architecture (Model VSD 503 with harmonic filter shown, similar
to 385, 419, 608 models)
Callout
Description
1
Filter pre-charge contactor
2
Filter supply contactor
3
Direct current current transducers (DCCTs)
4
Filter issues
5
50/60 Hz inverter (50 Hz applications only)
6
Filter inductor
7
Filter trap assembly
8
Filter pre-charge resistors
Liquid-Cooled OptiSpeed Compressor Speed Drive
26