ABB PBAE10A01 3BHB024711R0020 Excitation System Control Power Board

ABB PBAE10A01 (Order Number: 3BHB024711R0020) Excitation System Control Power Board
I. Basic Parameter Information
Product Model: PBAE10A01
ABB Material Code: 3BHB024711R0020
System: ABB UNITROL 5000 / UNITROL 6000 Generator Static Excitation System (The mainstream excitation device for power plant generating units)
Product Type: Switched Multi-Path Isolated Control Power Board (Core Power Supply Card for Excitation Regulator)
Installation Method: Standard Backplane Slot Installation, Compatible with Excitation Control Cabinet Rack

Core Functions
Multi-channel Isolated Voltage Stabilized Power Supply
Convert the AC/DC input voltage inside the cabinet into multiple isolated DC voltage stabilized power supplies, providing stable working power for the main control board, measurement acquisition board, pulse trigger board, communication interface board, IO terminal board, synchronous sampling board, etc., all control-type cards. The strong and weak electrical signals are isolated, suppressing grid surges and electromagnetic interference.
Auxiliary Power Supply for Excitation Circuit
Provide control power for the residual voltage excitation circuit of the generator, excitation contactor, excitation circuit detection, fan status monitoring circuit.
Overvoltage / Overcurrent / Short Circuit Protection
Built-in fuse, soft start, overcurrent latch protection. When any one of the loads is short-circuited, the output is automatically locked to prevent the spread of faults and burnout of the entire excitation control unit, and simultaneously report system fault alarms.
Dual-channel Redundancy Adaptation
Perfectly adapt to the UNITROL series dual-redundant AVR excitation regulator, supporting independent power supply for the main / standby channels, and fault channel isolation to ensure uninterrupted operation of the unit.

Electrical Key Parameters
Input Specifications: AC 85~264V wide-range AC input (compatible with single-phase 110V/220V), 50/60Hz
Multi-channel Isolated DC Output
+5V DC (main control, FPGA, logic circuit power supply)
±15V DC (analog sampling, operational amplifier, signal conditioning circuit)
+24V DC (relay, DI/DO switch quantity, local operation circuit)
Rated Output Power of the Entire Machine: Approximately 180W
Insulation Voltage: 2kV electrical isolation between input and each output
Operating Environment: 0℃～+60℃ industrial cabinet temperature, no fan natural cooling, anti-vibration, dust, oil contamination

System Supporting Boards
Common components in the same chassis:
Main Control Board: PCD231, PCD235
Measurement Board: MUB, PSI signal acquisition board
Pulse Trigger Board: GDI thyristor drive board
Communication IO Board: FIO, LCP local operation panel interface board

Typical Application Scenarios
ABB UNITROL5000/6000 self-parallel excitation system for synchronous generating units in thermal power plants, hydropower plants, gas-fired power plants, and self-owned power plants is one of the components with the highest failure rate of excitation regulators. Common faults: no output, missing voltage on one path, power-on trip, power failure alarm.