The GE DS200SHVMG1A serves as a specialized high-voltage interface module designed for the Speedtronic Mark V Turbine Control System. This M-frame board facilitates the critical link between the Silicon Controlled Rectifier (SCR) bridge and the primary power distribution network. Although the Mark V series represents a legacy generation of GE technology, this board remains essential for maintaining the automated regulation of gas, steam, and wind turbines. By managing high-voltage signal isolation and conversion, the module protects sensitive control logic from power-stage fluctuations.
Signal Conversion and VCO Functionality
A primary function of the DS200SHVMG1A involves processing low-voltage shunt signals and converting them into high-frequency data for the control system. The board captures shunt inputs within a range of $-500$ to $+500$ mV. Subsequently, onboard Voltage-Controlled Oscillator (VCO) circuits transform these millivolt signals into a differential frequency output ranging from 0 to 500 kHz. These converted signals then travel to the PCCA Power Connect Card or the DCFB/SDCI power supply boards, ensuring that the central controller receives accurate real-time data regarding motor armature current.
Hardware Configuration and Connectivity
- Current Attenuation: The board supports AC line current monitoring through an integrated 10:1 current transformer attenuation circuit.
- Customizable Logic: Seventeen hardware jumpers allow technicians to configure the board specifically for the operational requirements of the M-frame drive.
- Standardized Interfacing: The hardware utilizes IA2PL-1 and IA2PL-2 connectors to handle the positive and negative differential VCO outputs.
- System Interoperability: The design ensures a stable interface between the power bridge and supplementary boards like the PCCA and SDCI.
- Original Design Profile: As a “G1” base version without trailing revision digits, this board represents the foundational electronic architecture for this series.
- Stab and I/O Connectors: Standardized stab-on connectors facilitate secure high-current pathways and simplified field wiring.
Technical Performance Data
| Feature | Specification Detail |
| Manufacturer | General Electric (GE) |
| Model Number | DS200SHVMG1A |
| Product Series | Speedtronic Mark V |
| Module Category | High Voltage M-Frame Interface |
| Signal Input Range | $-500$ mV to $+500$ mV |
| Frequency Output | 0 to 500 kHz (VCO) |
| Physical Dimensions | 23.8 cm x 17.7 cm x 4 cm |
| Unit Weight | 0.34 kg |
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