HIEE451116R0001 ABB

Product Core Summary

Model: AFPS-01C HIEE451116R0001
Manufacturer: ABB
Core Function: Delivers stable auxiliary power to excitation control electronics and field flashing circuits, supporting reliable startup and continuous operation.
System Compatibility: Compatible with UNITROL 5000 and UNITROL 6000 excitation systems
Supply Status: Obsolete Spare Part
Warranty Standard: 12-month functional warranty, fully tested

Key Technical Specifications

Product Model: AFPS-01C HIEE451116R0001
Manufacturer: ABB
System Platform: UNITROL 5000 / 6000 Excitation Systems
Output Voltage: 24 V DC primary, with field flashing capability up to 150 V DC
Output Current: Up to 10 A continuous (24 V), higher peak for flashing
Input Voltage Range: 110-240 V AC or wide DC input options
Power Rating: 300-500 VA typical
Efficiency: > 85% at full load
Operating Temperature Range: -20°C to +70°C
Storage Temperature Range: -40°C to +85°C
Humidity: 5% to 95% non-condensing
Dimensions (W x H x D): Approximately 150 mm x 250 mm x 100 mm
Weight: 2.5 kg
Mounting Type: Panel or rack mounting in excitation cabinet
Protection Class: IP20 (cabinet enclosed)
Electromagnetic Compatibility: IEC 61000-6-2 immunity, IEC 61000-6-4 emission
Certification Standards: CE marked, RoHS compliant
Redundancy Support: Parallel operation capable for N+1 configurations
Mean Time Between Failures (MTBF): > 300,000 hours under nominal conditions

Technical Architecture & Functional Positioning

The AFPS-01C resides in the auxiliary power layer of excitation systems, providing regulated DC supplies to control modules, gate drivers, and field flashing circuits. In UNITROL setups, it ensures uninterrupted power to critical electronics even during main supply disturbances, while delivering high-current pulses for initial field establishment in brushless generators. This positioning isolates control performance from external power quality issues.

Design incorporates wide-input switching topology with active power factor correction, achieving high efficiency and low harmonic distortion. Multiple isolated outputs prevent ground loops, and built-in overvoltage/overcurrent protection safeguards downstream components. Field flashing functionality uses stored energy or boosted output to force initial rotor magnetization, essential for black-start or self-excitation modes.

These elements resolve key operational concerns: stable voltage regulation maintains control loop accuracy during grid fluctuations, redundancy options support high-availability requirements in base-load plants, and robust protection prevents cascading failures. In practice, the module enhances system startup reliability and overall fault tolerance, directly contributing to generator availability metrics.