GE DS200SHCBG1 Shunt Connector Card

الوصف

The GE DS200SHCBG1 is a specific variant of the Shunt Connector Board (SHCB) used in the GE DS200 Drive Series and Mark V Speedtronic Turbine Control Systems.¹

Its core function is to act as a passive, specialized interface for signals coming from current shunts, often handling a different current range or configuration than its sister board, the SHCAG1.

1. Primary Function

The DS200SHCBG1 is essentially a robust terminal board designed for signal integrity in a high-power environment.

• Current Feedback Routing: In a DC drive, current shunts are low-resistance devices used to measure high DC current (like armature or field current) by producing a small, proportional voltage drop (e.g., $50 \text{ mV}$). The SHCBG1 board provides the secure, noise-resistant terminal points for the wiring that carries this sensitive millivolt signal.
• Interface to Instrumentation: The board routes these signals from the physical shunts to the main Instrumentation Board (like the SDCI or DCFB), which performs the critical function of signal isolation, amplification, and conversion for the digital control system.
• Component Specification: The “B” in the functional code indicates a variation in design compared to the “SHCAG1.” While both are shunt connector boards, the SHCBG1 may be configured for a specific maximum current rating. For example, some documentation suggests the SHCBG1 is used for circuits with a rating up to ²$65 \text{ A}$.³

   

2. Part Number Breakdown

The full part number, often seen as DS200SHCBG1A or DS200SHCBG1ABC, follows the standard GE naming convention:

In summary, the DS200SHCBG1 ensures that the critical current measurement data, which is vital for the drive’s control loops and protective shutdowns, is reliably transmitted from the power hardware to the low-voltage electronics.