GE DS200SHCAG1 Shunt Connector Board

الوصف

The GE DS200SHCAG1 (Shunt Connector Board) is an essential, passive Printed Circuit Board (PCB) component within the GE Mark V Speedtronic Turbine Control System and the DS200 Drive Series.¹

Its primary function is to serve as a terminal or interface point for current shunt signals before they are sent to the main control and instrumentation circuitry (like the SDCI board).²

Core Function and Role

The DS200SHCAG1 is a Shunt Connector Assembly (SHCA) board that performs a critical routing and connection role.³

1. Shunt Signal Interface

The main function of this board is to provide a clean, secure connection point for the voltage leads coming from the Current Shunts. In a DC drive, a shunt is a precision, low-resistance device used to measure high DC current (like armature or field current) by dropping a small, measurable voltage across it (e.g., $50 \text{ mV}$ or $100 \text{ mV}$).

• The DS200SHCAG1 connects to these shunt leads and provides an isolated terminal point.
• The board then typically connects to the SDCI (DC Power Supply and Instrumentation) board or a similar feedback/interface board, which takes the low millivolt signal, isolates it, and converts it into a digital format (e.g., a frequency signal) for the main processor.

2. High-Current Connection Point

While it doesn’t process the control logic, the board handles the terminations of the wires from the current shunts, which are often installed in the high-current section of the drive. The DS200SHCAG1 is designed with robust connectors and trace patterns to ensure reliable signal transmission in a noisy, high-power industrial environment.⁴

3. Isolation and Connection

The board acts as a clean bridge, ensuring the accurate transmission of the critical current feedback signal. By organizing the shunt signal connections, it helps maintain the signal integrity required for precise motor control and protection. The functional abbreviation for the board is often referred to as SHCA (Shunt Connector Assembly).⁵

Part Number Breakdown (DS200SHCAG1)

The part number structure provides insight into the board’s series and design:

In summary, the GE DS200SHCAG1 Shunt Connector Board is a simplified, connector-heavy interface PCB that provides the dedicated, secure terminal points necessary to transfer the low-voltage, high-accuracy current feedback signals from the drive’s shunts to the main electronic control circuitry.