GE DS200SHCAG1AAA Shunt Connector Card

الوصف

The GE DS200SHCAG1AAA is a specific revision of the Shunt Connector Board (SHCA) used in the GE Mark V Speedtronic Turbine Control System and DS200 Drive Series.¹

Its function is straightforward and crucial: it serves as a passive, reliable interface for connecting the millivolt-level voltage signals from the high-current shunts to the electronic control boards for processing. It essentially acts as a terminal block and signal routing point in a hostile industrial environment.

Core Function and Purpose

The DS200SHCAG1AAA does not contain complex logic or power regulation circuitry; its design prioritizes the integrity of delicate current feedback signals.

• Current Measurement Interface: In a DC drive, a shunt is a precision resistor placed in series with the armature or field to measure very high DC currents.² This measurement is done by sensing the small voltage drop (e.g., ³$50 \text{ mV}$ or ⁴$100 \text{ mV}$) across the shunt.⁵

   

• Signal Routing and Termination: The DS200SHCAG1AAA provides a dedicated, robust PCB interface for terminating the wires that carry these sensitive, low-voltage signals from the shunts. It ensures these signals are securely connected before being passed on to the main SDCI (DC Power Supply and Instrumentation) board or other measurement cards for amplification, isolation, and conversion into a digital format.
• Signal Integrity: By providing a structured, often isolated pathway for these signals, the board helps prevent electrical noise and interference (common in high-power drive cabinets) from corrupting the critical current feedback data.

Part Number Breakdown (DS200SHCAG1AAA)

The final letters indicate the specific manufacturing and revision details:

In essence, the DS200SHCAG1AAA is an indispensable wiring and interface board that ensures the high-accuracy current feedback required for the main drive control system is delivered reliably.