3ASC25H214 DATX130 Rotor feedback board

Brand: ABB

Product Series: Excitation Systems / UNITROL Control Series

Model: DATX130 (Part Number: 3ASC25H214)

Product Type: Rotor Feedback Board / Rotor Ground Fault and Parameter Monitoring Module

3ASC25H214 DATX130 Rotor feedback board

Technical Parameters:

Signal Isolation: High-voltage galvanic isolation barrier designed to isolate sensitive low-voltage digital control electronics from the high-voltage/high-current DC rotor circuit.

Ground Fault Detection: Integrated high-sensitivity measurement loops to detect insulation degradation and rotor ground faults (earth faults) in the field winding.

Measurement Inputs: Specialized analog channels optimized for continuous tracking of rotor voltage, excitation current, and field winding temperature variations.

Frequency Response: High-frequency signal filtering circuitry built in to eliminate thyristor switching harmonics and electrical noise from the measurement loops.

Data Interfacing: Equipped with high-density ribbon cable or pin connectors for direct, real-time data transmission to central processors like the DAPC100.

Power Subsystem: Powered via internal rack connections (typically standard system control voltages) with localized overvoltage surge protection.

Protective Coating: Heavy-duty industrial PCB coating to withstand thermal stress, moisture, and intense electromagnetic interference (EMI).

Industrial Sectors:

Power Generation Utilities (Hydroelectric, Thermal, Gas, and Nuclear Power Plants), Heavy Chemical and Petrochemical Processing, Metal Smelting and Mining Facilities, and Marine Engineering.

Application Scenarios:

1. Generator Rotor Insulation Monitoring: Installed inside ABB UNITROL excitation systems to continuously measure the insulation resistance of the generator’s spinning rotor field winding, triggering an immediate alarm if a ground fault is detected.

2. Excitation Feedback Optimization: Deployed in utility-scale power plants to deliver highly accurate, isolated voltage and current feedback from the rotor circuit directly to the automatic voltage regulator (AVR) control loops.

3. Synchronous Machine Overload Protection: Deployed within heavy industrial complexes to monitor real-time rotor temperature trends (calculated via resistance variations), preventing thermal damage during periods of high reactive power demand.

4. Marine Power Generation Safety: Utilized inside the main electrical propulsion and power generation cabinets of large cruise ships or drilling vessels to safeguard synchronous generators against catastrophic rotor-to-frame short circuits caused by harsh, humid marine environments.