Description
Key Technical Specifications
- Product Model: HIEE205014R0001 UNC4673A V1
- Manufacturer: ABB
- System Platform: UNITROL Excitation Systems
- Power Supply Voltage: 24 V DC ±20%, isolated supply for low-noise operation in high-voltage environments.
- Power Consumption: Less than 15 W, ensuring minimal heat generation in densely packed control cabinets.
- Analog Input Channels: Multiple channels supporting ±10 V, 4-20 mA, and high-voltage shunt inputs up to 1000 V DC for direct field measurement.
- Measurement Accuracy: ±0.1% full scale, essential for precise control loop stability in automatic voltage regulation.
- Resolution: 16-bit ADC per channel, providing fine granularity for transient response analysis and fault diagnostics.
- Isolation Voltage: 2500 V AC galvanic isolation between channels and system ground, protecting against common-mode interference in power electronics.
- Response Time: <1 ms sampling rate, critical for real-time feedback in fast-acting excitation control loops.
- Operating Temperature Range: -10°C to +70°C, accommodating turbine hall conditions with forced ventilation.
- Storage Temperature Range: -40°C to +85°C, suitable for worldwide logistics and onsite storage.
- Dimensions: Approximately 220 mm x 160 mm x 30 mm (Eurocard format), designed for rack-mounted integration.
- Weight: About 0.8 kg, lightweight for easy handling during maintenance windows.
- Communication Interface: Internal bus connection to processor units, supporting high-speed data transfer without external protocols.
- MTBF: Greater than 250,000 hours, reflecting robust design for continuous operation in critical power assets.
- Certifications: CE compliant; adheres to IEC 61010 for safety in electrical equipment and EMC standards for industrial immunity.
Technical Architecture & Functional Positioning
This module functions at the interface layer of the excitation control system, converting raw field signals from shunts, transducers, and voltage dividers into digitized values for the main processor. Within UNITROL architectures, it sits between the power converter (thyristor bridge) and the control CPU, enabling accurate monitoring of DC field current, AC input currents, and voltages. Its design prioritizes signal fidelity through differential inputs and hardware filtering, rejecting noise from switching harmonics typical in SCR-based converters.
Core technologies include multi-channel ADCs with oversampling for enhanced noise rejection and optical isolation to prevent ground loops in high-potential circuits. Calibration coefficients are stored onboard, allowing plug-and-play replacement without recalibration in most cases. From a systems view, this architecture addresses challenges like measurement drift over temperature or aging, which could degrade AVR performance and lead to voltage oscillations. By delivering consistent accuracy, the module supports advanced features such as power system stabilization and limiters, directly contributing to grid code compliance.
In practice, the high isolation and accuracy solve real-world issues in harsh environments, where electromagnetic interference from the converter could corrupt signals. This ensures stable closed-loop control, preventing overexcitation or underexcitation events that risk generator damage.
Tektronix TSG 120 YC/NTSC Signal Generator
Quartus Programmable Logic Development Software for PC
ANRITSU OPTICAL POWER SENSOR MA9611A 0.75-1.7
Motorola MVME RS-232D
ADTECH AX/4000 TEST SYSTEM
Cabletron SSR-GSX11-02 Smartswitch 1000Base-SX Card
Extron ADA 6 Component/HDTV Distribution Amplifier
HP 58505B Lightning Arrester
Metcal PS2E-01 Power Supply
Force Computers MF10-110 CENTELLIS
Tektronix TSG 121 YC/PAL Signal Generator
NOYES OFS 300 OPTICAL FIBER SCOPE SYSTEMS
Logic Controls LD9000X New in opened box
Staco Energy Products 3PN501 5AMP
NEW PolyCom ShowStation IP Base System
Bailey P HB DIO 400S100 PHBDIO40010000 DIO Industrail
AIN-120 Analog Input Block Industrail
Square D 785R-102 1000:5 Ratio Current Transformer New
Dynatel 730 with manual and Test cord
HP/Agilent J424A Crystal Detector X2
EST visionCLICK 7.0 for visionICE software
KIKUSUI GP-IB Programmer DPO2212A
