ABB PCD231B101 3BHE025541R0101 Excitation Control Module in stock
ABB PCD231B101 (3BHE025541R0101) is a high-performance excitation control module for ABB UNITROL series generator excitation systems. It processes voltage and current feedback signals to regulate generator excitation current and maintain stable output voltage.
This module supports automatic voltage regulation, limit protection and fault recording functions. It is discontinued legacy spare component, widely used for maintenance replacement of power plant excitation control cabinets.
Main Specifications
| Item | Parameter |
| [1] Brand | ABB |
| [2] Model | PCD231B101 3BHE025541R0101 |
| [3] Product Type | Excitation Control Module |
| [4] Series | UNITROL Generator Excitation System |
| [5] Control Function | Automatic Voltage Regulator (AVR) |
| [6] Communication Interface | Backplane bus for UNITROL rack |
| [7] Input Signal | Generator voltage & current sampling signals |
| [8] Mounting | Rack-mounted |
| [9] Operating Temp | 0℃ ~ +60℃ |
| [10] Protection Features | Overexcitation, underexcitation and current limit protection |
Core Functions
| Function | Description |
| [1] Automatic Voltage Regulation | Real-time adjustment of excitation current to stabilize generator terminal voltage. |
| [2] Excitation Limit Protection | Prevent overexcitation and underexcitation to protect generator safe operation. |
| [3] Fault Data Recording | Capture operation data and fault events for post-fault analysis. |
| [4] Signal Sampling & Processing | Collect generator voltage and current signals for closed-loop control calculation. |
| [5] Rack Backplane Communication | Exchange data with other modules inside UNITROL excitation cabinet. |
Application Scenarios
| Industry | Usage |
| [1] Thermal Power Plant | Synchronous generator excitation control for coal-fired generating units. |
| [2] Hydropower Station | Hydro generator voltage regulation and excitation protection control system. |
| [3] Combined Cycle Power | Gas turbine generator excitation control and grid connection management. |
| [4] Legacy System Maintenance | Spare replacement for aging ABB UNITROL excitation control racks. |
FAQ
| Question | Answer |
| [1] What is ABB PCD231B101 3BHE025541R0101? | It is ABB UNITROL excitation control module for synchronous generator voltage regulation. |
| [2] What is its core function? | Automatic voltage regulation and excitation limit protection for power generators. |
| [3] Which system does it belong to? | It is designed for ABB UNITROL series generator excitation control system. |
| [4] Is it obsolete spare part? | Yes, it is legacy spare used for maintenance of old UNITROL excitation cabinets. |
