DS3820PSFA1B1A

About the DS3820PSFA1B1A

The DS3820PSFA1B1A  is an adapter module for GE’s Mark IV gas/steam turbine management system.  The MKIV is built on powerful microcomputers that monitor the turbine system around the clock and protect it from issues like vibration, fire, high pressure, and over temperature.  The MKIV was GE’s third readily available Speedtronic system. It has drastically improved reliability when compared to earlier Speedtronic systems like the Mark I or Mark II.

The  DS3820PSFA1B1A is a modification of a previously built GE DS3800 board. An L-shaped housing has been added.  Also, some additional components have been added in conjunction with this new housing.

The  DS3820PSFA1B1A  has three larger transformers.  These components are placed side-by-side and take up the majority of the space in the short end of the  DS3820PSFA1B1A’s housing. The remaining space is used by the top of two through-hole capacitors attached to the surface of the original DS3800 board.  These are also large components and are reinforced by collar clamps that also attach to the board at multiple points.

The majority of the wiring occurring from the DS3800 board to the housing is taken care of using headers.  There is one six-pin header, two two-pin headers, and one four-pin header located on the board. The large switch placed into the top of the housing, however, wires directly into the PCB using two wires.  

The  DS3820PSFA1B1A has one amber LED.  It has five wire wound resistors. The DS3800 board connects to its new housing by four screws.  The housing is built with multiple flanges that point in both directions (both inward and outward.)  These flanges have screw mount holes and other cutouts cut into them.