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The 3BHE035301R0001 UNS0121 A-Z,V1 is a high-performance, compact digital excitation system for small and medium-sized synchronous generators and industrial machines. It features dual-channel support, IGBT technology for up to 10ADC output, IEEE PSS compliance, and comprehensive diagnostic tools for harsh operating environments. Technical specifications, including the UNS0121 A-Z.V1 configuration, are detailed on the product datasheet.
Provides excitation current to synchronous motors via exciter, achieving precise regulation of motor voltage, power factor, and stability
Supports a continuous operational current output up to 10A, ensuring stable equipment operation under complex and harsh industrial environments
Utilizes advanced microprocessor technology paired with high-performance IGBT semiconductor devices, significantly enhancing control system processing performance
This control unit demonstrates exceptional tolerance against harsh industrial environments. The entire circuit board assembly features a premium protective conformal layer. The hardware performance complies strictly with DNV marine classification and UL international standards. It operates reliably under severe conditions including intense mechanical vibrations, extreme temperatures, and high humidity.
The hardware integrates versatile communication ports including industrial Ethernet, USB, and RS485. It connects directly into upper-level DCS or PLC automation networks. The onboard transient data logger and Sequence of Events (SOE) flash memory function alongside CMT1000 software to provide field technicians with full waveform diagnostics and efficient fault root-cause analysis without external oscilloscopes.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
ABB 3BHE035301R0001 UNS0121 A-Z,V1 Control Unit Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Hydroelectric Power Generation
Closed-loop excitation control for hydro-generators. Executing automatic voltage regulation (AVR) on synchronous hydro-generators to stabilize grid terminal voltage based on fluctuating water flow rates.
Thermal Power Plants
Excitation loops for steam turbine synchronous generators. Regulating the rotor excitation current of steam-driven generators to manage reactive power output under changing factory loads.
Gas Turbine Power Generation
Transmitting thyristor trigger pulses to modulate field current during peak-load demand cycles on synchronized gas turbine units.
Iron & Steel Metallurgy
Maintaining constant power factor (PF) on multi-megawatt synchronous motors running industrial furnace air ventilation blowers.
Chemical Manufacturing
Sampling stator current and voltage via PT/CT lines to adjust field current on large gas compressors within ammonia synthesis facilities.
Oil & Gas Refining
Power factor adjustment for synchronous pipeline booster pump motors. Executing reactive power (VAR) regulation loops on high-voltage pump motors running continuous crude oil cross-country pipelines.
During use, verify that the high-voltage generator PT sampling circuits and excitation power supplies are completely isolated before applying power to prevent secondary-side high voltages from feedbacking into the board terminal blocks. Operators must wear a grounded ESD wrist strap when handling or interfacing with the board, and the hardware must be stored inside static-shielding bags when not in active operation.
Use a torque screwdriver to tighten the analog and thyristor pulse trigger terminal screws to the manufacturer-specified torque values to prevent mechanical cracking of the FR-4 substrate. Prior to running, connect a PC to the board via Ethernet and use CMT1000 software to program the synchronous machine limits and PT/CT transformation ratios into the flash memory, do not energize the primary main circuit with unsynchronized parameters or factory default configurations. Finally, maintain the cabinet air filters regularly to prevent conductive dust accumulation across the close trace spacing of the multilayer PCB.
The ABB 3BHE035301R0001 UNS0121 A-Z, V1 is a central control unit for UNITROL 1010 Automatic Voltage Regulators, executing excitation loops (AVR, FCR, PF, VAR) on synchronous machines. Fabricated on FR-4 substrate with industrial conformal coating, the board features direct potential/current transformer sampling inputs, thyristor pulse outputs, programmable digital I/O, an RS-485 port, and an Ethernet RJ45 port supporting Modbus protocols. It operates on a dual-redundant 18...30 V DC power supply, interfaces with CMT1000 configuration software, and utilizes onboard LEDs for microprocessor diagnostics.
It is the central control unit mainboard for the ABB UNITROL 1010 Automatic Voltage Regulator (AVR), utilized for closed-loop excitation control of synchronous generators and motors.
How to install and use products like the 3BHE035301R0001 UNS0121 A-Z,V1?
Secure it inside the excitation enclosure or control panel via mounting holes, connect the generator voltage/current sampling wires and thyristor trigger output lines, and input operational parameters via proprietary software.
What physical input channels are built into the 3BHE035301R0001 UNS0121 A-Z,V1?
It contains analog measurement channels for receiving generator stator voltage, stator current, and excitation current, along with digital input terminals for external interlock statuses.
What signals does the 3BHE035301R0001 UNS0121 A-Z,V1 output to control excitation?
It outputs pulse trigger signals or power-stage control waveforms to drive the external thyristor rectifier bridge, thereby adjusting the rotor excitation current supplied to the generator.
What are the basic control modes executed by the 3BHE035301R0001 UNS0121 A-Z,V1 during operation?
It executes Automatic Voltage Regulation (AVR), Field Current Regulation (FCR), Power Factor regulation (PF), and Reactive Power regulation (VAR).
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Disclaimer: We are not an authorized distributor or distributor of the product manufacturer of this website, The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because our company is not an authorized distributor of this product, the Original Manufacturer`s warranty does not apply.While many DCS PLC products will have firmware already installed, Our company makes no representation as to whether a DSC PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. Our company also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from our company, its distributors, or any other source. Our company also makes no representations as to your right to install any such firmware on the product. Our company will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.
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