ABB PPD113 B01-26-111000 3BHE023784R2630 Power Interface Board

PPD113 with code B01-26-111000 and part number 3BHE023784R2630 is a dedicated power signal processing board for ABB UNITROL series generator excitation systems. It handles AC/DC power conversion, synchronizes grid voltage sampling, and transmits processed power signals to the main control board HAC782AE. This board converts raw high-voltage transformer signals into safe low-voltage analog signals for closed-loop excitation regulation and grid synchronization control.

This rack-mounted PCB integrates voltage transformers, signal conditioning circuits, surge suppression components and multi-channel isolation circuits. Front-mounted LED indicators display power supply status, synchronization lock and hardware fault alarms. It features conformal coating to resist dust, humidity and strong electromagnetic interference inside power station high-voltage cabinets. Discontinued from original mass production, it serves as a critical aftermarket spare part for power generation excitation control cabinets.

Main Specifications

• Brand: ABB; Model: PPD113; Type Code: B01-26-111000; PN: 3BHE023784R2630; Origin: Switzerland;In stock
• Applicable Equipment: UNITROL Series Synchronous Generator Excitation Control Cabinet
• Core Function: Grid voltage sampling, power signal conditioning, auxiliary power conversion, synchronization signal generation
• Signal Isolation: Multi-stage reinforced isolation between high-voltage PT/CT circuits and low-voltage control circuits
• Built-in Protection: Transient surge suppression, overvoltage clamping, channel short-circuit current limiting
• Operating Power: 24VDC auxiliary power supplied by the excitation cabinet backplane
• Diagnosis Indicators: Front panel LEDs for power on, sync normal, board fault and signal overload
• Operating Environment: -25℃ ~ +70℃, relative humidity 5%~95% non-condensing, high EMC resistance
• Installation: Standard single-slot Euro rack plug-in structure; cabinet power cut-off required for replacement
• Matching Hardware: HAC782AE main control board, GDC780BE IGBT gate drive board, UAA326A04 hybrid I/O module

Core Functions

• Collect three-phase grid voltage and generator terminal voltage signals from potential transformers, filter and attenuate high-amplitude signals into standardized low-voltage sampling signals.
• Generate precise synchronization reference signals for generator grid connection logic, deliver synchronized waveform data to HAC782AE mainboard to complete automatic paralleling control.
• Provide isolated auxiliary power supply for internal signal circuits and peripheral I/O boards, with built-in current limiting to prevent secondary damage during signal wiring faults.
• Multi-layer surge protection circuit absorbs lightning and switching surges from high-voltage primary circuits, avoiding breakdown of low-voltage control hardware.
• Real-time self-monitoring detects signal loss, power supply abnormality and internal circuit failure, sending fault alarm signals to the main control board and local status LEDs.
• Unified rack bus and signal pin definition enable direct ｄｒｏｐ-in replacement without reworking cabinet wiring or modifying excitation control parameters.

Application Scenarios

• Spare power signal board replacement for UNITROL excitation cabinets of thermal power plants and hydropower station large synchronous generator units.
• Grid synchronization and voltage sampling spare parts for self-owned power stations of petrochemical plants, metallurgical steel mills and pulp & paper factories.
• Maintenance backup stock for biomass waste heat power stations, cement kiln power generation units and mine auxiliary generator excitation control racks.
• Matching signal processing module cooperating with ABB HAC782AE main control board, GDC780BE gate drive board and UAA326A04 I/O card.
• Overhaul and retrofit spare components for aging ABB UNITROL excitation systems with abnormal voltage sampling or grid synchronization failures.

• Global aftermarket spare inventory for energy industry maintenance workshops servicing legacy ABB generator excitation automation hardware.