DS3800NEPA1C1B | General Electric PWB Exciter Board GE MARK IV

The DS3800NEPA1C1B, manufactured by GE, serves as a motor exciter power supply within the Mark IV Speedtronic series, utilized for gas and steam turbine control. The Mark IV system facilitates automated startup, shutdown, cooldown, and sequence control of turbines and auxiliaries, while also providing essential turbine protection against hazardous operating conditions. 

The DS3800NEPA1C1B exhibits vertical bulkiness due to the incorporation of two Raycom Electronics 44B379508-G02 modules positioned parallel to the short ends of the board. Additionally, the board features various components including a jumper switch, four integrated circuits, large and small resistors and capacitors, a multi-pin terminal connector, two male straight-pin connectors (6-pin and 7-pin), four potentiometers, and a thermistor for circuit protection and voltage regulation. 

The DS3800NEPA1C1B, manufactured by GE, functions as a motor exciter power supply component within the Mark IV Speedtronic series, employed for gas and steam turbine control applications. The Mark IV system enables automated sequencing of turbines and auxiliaries, facilitating fully automated startup, shutdown, and cooldown processes. Additionally, the Mark IV incorporates turbine protection mechanisms to mitigate unsafe operating conditions. 

The DS3800NEPA1C1B features a vertically bulky design owing to its integration with two Raycom Electronics 44B379508-G02 modules, positioned parallel to the short ends of the board. Key components utilized in the DS3800NEPA1C1B include: 

• One jumper switch offering settings for NR or REV configurations. 
• Four integrated circuits. 
• Nine large resistors with distinctive orange, white, and gold bands, alongside several smaller resistors. 
• Nine large capacitors, supplemented by several smaller capacitors. 
• One multi-pin terminal connector serving as a male interface. 
• Two male straight-pin connectors, comprising a 6-pin arrangement and a 7-pin configuration, organized in a 2-2-2 and 2-1-1-3 pattern, respectively. 

Four potentiometers. 

One thermistor, also known as a thermal resistor, which exhibits decreased resistance with increasing temperature, contributing to circuit protection and voltage regulation functions. 

The DS3800NEPA1C1B is designed with alignment markings on two sides and drilled for mounting at all four corners, featuring four additional holes offset from the center to accommodate the attachment of supplementary modules.