DS3820C12A

About the DS3820C12A

The DS3820C12A is a component for the Mark IV system from General Electric.  This system is part of the popular Speedtronic line from GE, which was specifically designed for the management of steam and gas turbine management systems.  The MKIV was one of the first triple-redundant systems available from GE which allowed overlapping protections on all critical controls and protection parameters.   The MKIV offered automation of procedures like speed control, shutdown, control sequencing, and startup. 

The DS3820C12A has multiple parts.  The external casing of the unit is designed as a current isolator box.  This mounts via screws to a flat surface.  The unit opens from the front.  The front panel of the casing is labeled with the part numbers and with high voltage warnings.   The bottom edge of this casing is designed with cutouts to allow wired connections to be routed into/out of the box. 

The interior portion of the DS3820C12A is comprised of a DS3800NCIB circuit board.  This board is populated by an isolation amplifier, three potentiometers, two transistors,  a terminal strip with three connections, and two vertical pin male connectors.  The board also has integrated circuits, quick connect screw mounts, a ribbon connector, resistors, diodes, capacitors, stab-on connectors, and a component labeled 218A4834.   This panel is screw mounted to the back of the external box and secured in place.   It is marked with the GE logo and with its board ID number. 

GE publications like data sheets and product manuals will provide additional information.  GE was responsible for original tech support for this product.