ABB 3BHB005245R0101 Excitation Interface Board in stock

ABB 3BHB005245R0101 is a signal conditioning and pulse interface board for ABB Unitrol generator excitation system. It processes PT/CT voltage and current signals, isolates and amplifies trigger pulses to drive SCR rectifier units.

This legacy excitation board is discontinued. It is widely used as spare parts for hydropower and thermal power generator excitation cabinets, with signal isolation circuits and switch feedback channels for field breaker status.

Data Parameters

• 1. Brand: ABB

• 2. Model: 3BHB005245R0101

• 3. Product Type: Excitation Signal Interface Board

• 4. Application: Unitrol series generator excitation control system

• 5. Feature: PT/CT signal conditioning, pulse isolation & amplification, breaker feedback

• 6. Characteristic: Built-in pulse transformer, surge protection, signal isolation

• 7. Signal Input: AC voltage, AC current, dry contact status signals

• 8. Compatible Devices: Unitrol excitation controller, SCR power rectifier

• 9. Mounting: Installed inside excitation cabinet rack slot

• 10. Operating Temperature: -10℃ ~ +60℃

Core Functions

• 1. Receive and filter AC voltage and current signals from PT and CT.

• 2. Isolate and amplify trigger pulses for SCR thyristor rectifier.

• 3. Collect feedback status of field breaker and de-excitation switch.

• 4. Convert analog signals and transmit to the main excitation regulator.

• 5. Provide electrical isolation between control circuit and power circuit.

Application Scenarios

• 1. Thermal power plant generator excitation control cabinet.

• 2. Hydropower station Unitrol excitation regulation unit.

• 3. Industrial self-owned power station synchronous generator excitation system.

• 4. SCR rectifier pulse drive and signal acquisition unit.

• 5. Old ABB Unitrol excitation system spare replacement and overhaul.

FAQ

• 1. Q: What is ABB 3BHB005245R0101?
      A: It is an interface signal board for ABB Unitrol generator excitation system.

• 2. Q: What is its main function?
      A: It processes PT/CT signals and amplifies isolated trigger pulses for SCR.

• 3. Q: Is this model still in production?
      A: It has been discontinued, only for aftermarket spare parts supply.

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