The DS3800NOCB1B1B printed circuit board functions as an overcurrent board in General Electric’s Mark IV turbine control system. The MKIV was one of several industrial steam and gas turbine management systems marketed by GE under the Speedtronic name. It had integrated chipsets and overlapping control responsibilities via its TMR (triple modular redundant) design. These significantly reduced downtime.
The DS3800NOCB1B1B is built with a long backplane connector on one side of the board. On the other side, there are four factory-drilled holes. Two of these have been used for extractor clips. These clips are used for the insertion and removal of the board and help installers by creating a pivot-point that will help drive the board out of a tight location. During installation, they give operators a place to hold on to as the board is getting inserted into a rack system.
The DS3800NOCB1B1B is populated by a number of other components including toggle switches, transistors, LEDs (both red and amber), TP test points, and integrated circuits like dual operational amplifiers and hex inverter gates.
While resistors tend toward being ceramic-covered metal film, carbon composite resistors are also used. Some metalized polycarbonate capacitors on the board have been hermetically sealed.
Original technical support for the DS3800NOCB1B1B PCB was provided through OEM publications like GE manuals, data sheets, and product guides. These products will still provide the best and most complete information regarding the installation, maintenance, and handling of this board. Please read through and refer often to these documents as you are installing this equipment.