GE DS3820LFRA RES ASSM

الوصف

The GE DS3820LFRA is a Resistor Assembly for the Mark IV Speedtronic turbine control system. Its primary purpose is to provide a bank of resistors for various electrical functions, such as signal conditioning, current limiting, and voltage division, within the control panel.

Technical Breakdown 🧠

This module is a passive electrical component that plays an important support role in the Mark IV system.

• Signal Conditioning: The most common use for a resistor assembly in a control system is for signal conditioning. For example, it can be used to create a voltage divider, which scales down a high-voltage signal from a field device to a lower, safer voltage that can be accurately read by an analog input module.
• Current Limiting: Resistors are also essential for limiting current to protect sensitive electronic circuits. This assembly may be used to provide a specific resistance in a circuit to prevent a short-circuit condition from causing damage to an I/O module or other control components.
• Passive Component: Unlike other boards in the Mark IV system that contain microprocessors or active electronics, the DS3820LFRA is a passive component. It does not perform any logic, data processing, or control functions. Its role is purely electrical and foundational to the proper operation of the active components it is connected to.
• “Assembly” Designation: The term “Assembly” implies that this is a complete unit, likely consisting of a circuit board populated with multiple high-precision resistors. These resistors are typically mounted in a compact form factor for easy installation in the control cabinet.

Applications 🏭

The DS3820LFRA is used in Mark IV turbine control systems where:

• Voltage Scaling is required for precise analog measurements.
• Current Limiting is needed to protect sensitive I/O and control circuits.
• Pull-up or Pull-down functions are necessary for discrete signal integrity.