GE DS200SHCBG1A Shunt Connector Card

الوصف

The GE DS200SHCBG1A is a specific revision of the Shunt Connector Board (SHCB) used in the GE DS200 Drive Series and the Mark V Speedtronic Turbine Control Systems.¹

Like other SHC boards, its function is passive and critical for measurement accuracy; it acts as a reliable interface and terminal point for current feedback signals.

Core Function

The primary job of the DS200SHCBG1A is to manage the flow of highly sensitive voltage signals generated by the drive’s current shunts:

1. Signal Termination: In the drive’s high-power circuit, a current shunt measures high DC current (like armature current) by producing a small, proportional voltage drop (often $\pm 50 \text{ mV}$ or $\pm 100 \text{ mV}$). The SHCBG1A provides the robust, screw-terminal or plug connectors where the wires carrying this sensitive millivolt signal are physically secured.
2. Signal Routing: It ensures these low-voltage, noise-prone signals are cleanly routed from the connection terminals to the main control circuitry. The board connects directly to the Instrumentation Board (e.g., SDCI or DCFB), which then processes, isolates, and converts the analog current signal into a digital format that the main drive controller (SDCC) can use for regulation and protection.
3. Specific Configuration: The SHCB designation suggests a configuration tailored to a specific set of current shunts or current ratings. Some documentation indicates that the SHCB variants are rated for circuits up to approximately $65 \text{ A}$, differing from other SHCA boards designed for different ranges or applications.

Part Number Breakdown (DS200SHCBG1A)

The specific lettering denotes the board’s series and revision history:

The DS200SHCBG1A is thus an essential, passive intermediary that maintains the signal fidelity necessary for the accurate, high-speed control of the industrial drive system.