Control, power supply and interface boards for General Electric DC adjustable-speed drive and static excitation platforms — the DC2000 and DC300 DC drive systems and the EX2000 excitation system. These are drive and excitation boards, not Speedtronic turbine control boards, and they are frequently confused with them because both live in GE power-generation plants and share similar part-number styling.
Families held here include the 531X series (DC2000/DC300 drive control, motor field control and EX2000 field exciter power supply cards), the 193X series (SCR Drive and Speed Variator Drive power supply, reference and power amplifier boards — some carry Reliance Electric branding), and the DS6800 / DS6815 / DS2020 DC2000 drive modules.
Buying the right board: an EX2000 exciter fault and a Speedtronic turbine control fault can present the same way at the HMI. If the alarm concerns field current, field voltage or generator excitation, the board you want is almost certainly in this collection. If it concerns turbine speed, fuel, or protection logic, see GE Speedtronic Turbine Control Boards.
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