Key Technical Specifications
- Product Model: HIEE300766R0001
- Manufacturer: ABB
- System Platform: ABB UNITROL Static Excitation System
- Module Type: Excitation control signal interface board
- Input Signal Types: ±10 V analog signals, 0–20 mA / 4–20 mA (system dependent)
- Output Signal Types: Conditioned analog control signals and logic-level outputs
- Signal Resolution: 12-bit effective resolution
- Electrical Isolation: Galvanic isolation between measurement, control, and logic domains
- Isolation Voltage Rating: ≥1500 V AC
- Signal Response Time: <5 ms end-to-end propagation delay
- Power Supply Requirement: +24 V DC from UNITROL control rack
- Power Consumption: <10 W
- Operating Temperature: 0 to +55 °C
- Storage Temperature: −25 to +70 °C
- Mounting Method: Plug-in PCB for UNITROL excitation control rack
- Standards & Compliance: CE compliant, IEC 60034, IEC 61131-2 industrial control standards
Technical Architecture & Functional Positioning
Architecture Analysis
The HIEE300766R0001 is positioned at the control interface layer of the ABB UNITROL excitation architecture. It does not participate in direct power conversion; instead, it forms the critical signal bridge between generator measurement circuits, AVR control logic, and excitation power electronics. Its role is foundational: ensuring that voltage, current, and reference signals entering the control algorithms are accurate, stable, and electrically isolated.
From a hardware design perspective, the board integrates precision analog conditioning circuits with robust galvanic isolation stages. These isolation barriers are essential in excitation systems, where high-energy switching devices and field circuits generate substantial electrical noise and transient voltages. By separating low-level control electronics from high-power sections, the module protects the AVR from disturbance-induced instability and long-term component stress.
The engineering value of this architecture is reflected in excitation stability and predictable dynamic response. In synchronous generators, even minor signal distortion or latency can result in voltage oscillations, poor reactive power sharing, or excessive rotor heating. The fast response time and stable scaling provided by this module enable the AVR to react smoothly during load changes, grid disturbances, synchronization events, and fault recovery. This becomes especially critical in weak-grid or islanded operation, where excitation performance directly affects grid stability and generator protection margins.
Woohhead BRAD HARRISON 410P801 MULTIPORT INTERCONNECT
BRAD HARRISON 116020A01F300 MINI-CHANGE CORDSET 6P NEW
BRAD HARRISON 332121B04M100 MINI 12p CORDSET * NEW
BRAD HARRISON DN11A-M240 DNET 5P MINI M/ST F/ST 24M NEW
BRAD HARRISON CC4030A48M040 4P POWER QC M/F/ST 4M NEW
12′ BRAD HARRISON 35610 12P CONTROL CONNECTOR MALE PLUG
12′ BRAD HARRISON 34713 9P CONTROL CONNECTOR MALE PLUG
(18) NOS WOODHEAD BRAD HARRISON JUMPERS G85000E12M006
BRAD HARRISON 47249 USPP 47249
BRAD HARRISON 47459SS NSFP 47459SS
BRAD HARRISON 884030C02M180 NSFP 884030C02M180
BRAD HARRISON CC4030A47M030 NSFP CC4030A47M030
BRAD HARRISON 332020A01F120 NSPP 332020A01F120
Brad Harrison Miro Change 4 port distribution box 20m
BRAD HARRISON DNF11A-M240 DNET 5P MINI M/F/ST 24M NEW
BRAD HARRISON 712P401 NSPP 712P401
BRAD HARRISON BTY801P-FBB USPP BTY801PFBB
