Description
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BrandABB
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ModelUNITROL 1020
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Product NameCompact Digital Automatic Voltage Regulator (AVR) / Brushless Excitation Controller
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Country of OriginSwitzerland
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HS Code8537101100
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Dimensions240mm×180mm×85mm
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Weight2.8kg
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Operating Temperature-20°C to +60°C
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Storage Temperature-30°C to +70°C
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Part Number3BHE003708R0030
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Warranty12 month
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Product StatusNew and original
ABB UNITROL 1020 Product Introduction and Technical Specifications
1.Input Technical Parameters
Power Supply Input: Supports wide-range industrial power input, with AC 85V to 265V universal voltage input, compatible with most on-site industrial power supply systems. It allows short-term voltage fluctuation and transient impact to adapt to unstable power supply conditions of power stations.
Generator Voltage Sampling Input: Accepts generator terminal voltage sampling signals, with rated sampling voltage conforming to conventional generator voltage standards, supporting real-time high-precision collection of generator operating voltage data to provide basis for voltage regulation calculation.
Signal Input Interface: Equipped with multi-channel digital and analog input terminals, which can collect generator current, power factor, rotating speed and other operating signals, and access external switch control signals to realize remote start-stop and function switching.
2.Output Technical Parameters
Excitation Current Output: The maximum continuous excitation output current reaches 15A, which fully meets the excitation demand of synchronous generators below 80MVA. The output current features high adjustment accuracy and fast response speed.
Regulation Accuracy: The static voltage regulation accuracy is better than ±0.5%, realizing ultra-precise generator terminal voltage stabilization and effectively suppressing voltage fluctuation during generator load switching and grid connection.
Communication Output: Built-in multiple industrial communication protocols, including Modbus TCP/RTU, Profibus DP and Ethernet/IP. It supports real-time data transmission, remote parameter configuration, operating data monitoring and fault information upload, realizing seamless connection with industrial upper computer control systems.
Alarm and Relay Output: Configurable multi-channel relay signal output, which can output fault alarm, overload protection, synchronization completion and other switch signals to cooperate with external protection and control equipment.
UNITROL 1020 3BHE003708R0030 ABB Product Core Advantages
High Operational Reliability: Adopts industrial-grade core components and ABB’s mature digital control algorithm, with strong anti-interference ability. It supports 24-hour continuous uninterrupted operation, effectively reducing equipment failure rate and on-site maintenance workload, and improving the overall stability of the generator set.
Compact and Easy to Install: The miniaturized integrated design saves cabinet installation space, with simple wiring and convenient installation. It is highly compatible with old generator equipment, realizing fast replacement and upgrade without large-scale transformation of the original system.
Powerful Control Functions: Integrates voltage regulation, reactive power control, grid connection synchronization, fault self-diagnosis and over-limit protection. It supports dual-channel redundant control, realizes automatic load distribution and rotating diode monitoring, and meets the diversified control requirements of power generation operation.
UNITROL 1020 3BHE003708R0030 ABB Wiring Method
The UNITROL 1020 adopts standardized terminal block wiring mode with clear functional partition, which is divided into power supply wiring area, signal sampling wiring area, control input wiring area, excitation output wiring area and communication wiring area.
For power supply wiring, connect on-site industrial AC power supply to the designated power input terminals according to the voltage specification, ensuring positive and negative wiring correctness and firm wiring to avoid loose contact. For generator voltage and current sampling wiring, connect the generator secondary sampling signal line to the analog input terminals in strict accordance with the signal polarity, to ensure accurate sampling data.
For control signal wiring, connect external remote control switches and interlock signals to the digital input terminals, and set corresponding function parameters through the system program. For excitation output wiring, connect the excitation output terminals to the generator brushless excitation loop in a standardized manner to ensure stable current output transmission.
For communication wiring, select Ethernet or serial communication interface according to the on-site control system requirements, complete cable connection and protocol matching configuration. After all wiring is completed, conduct circuit inspection and insulation test, and perform parameter debugging and trial operation to ensure the wiring system operates normally.
