ABB UNITROL 1020 is a powerful and compact automatic voltage regulator(AVR)that belongs to ABB’s UNITROL 1000 series.The following is a detailed introduction to ABB UNITROL 1020:

1.Main applications

ABB UNITROL 1020 is designed for small and medium-sized synchronous generators and industrial equipment.It is mainly used for excitation control of these equipment to ensure the stability of the generator output voltage.It is widely used in power plants,industry and ships.

2.Technical features

Automatic voltage regulation:Through the PID control algorithm,the generator excitation current is accurately adjusted to stabilize the output voltage.

Parallel operation:Supports multiple generators to operate in parallel to achieve load sharing and power factor adjustment.

Automatic synchronization:Automatically synchronize the generator with the power grid to ensure safe and reliable grid connection process.

Multiple protection functions:It has multiple protection functions such as overcurrent,overvoltage,undervoltage,etc.to ensure safe operation of the equipment.

Rich communication interface:Supports multiple communication protocols,such as Modbus,Ethernet,etc.,which is convenient for communication with the host computer.

High performance and reliability:It adopts advanced microprocessor technology and IGBT semiconductor devices,with high performance and reliability.

Easy to use:It provides a friendly user interface to facilitate users to set parameters and monitor status.

Flexible configuration:Various parameters can be flexibly configured according to different application requirements.

Strong environmental adaptability:It can perform high-performance work under harsh conditions and different temperature ranges,and fully complies with international standards such as DNV and UL.

III.Technical specifications

The technical specifications of ABB UNITROL 1020 may include but are not limited to the following(specific parameters may vary depending on product version or application scenario):

Power supply and measurement terminals:Maximum continuous current 30A,maximum cable 4mm²(AWG 24-10),reliable connection of tension spring terminals,and easy access to test points.

Excitation output:The measurement terminals include three-phase machine voltage,single-phase network voltage and single-phase machine current.

Analog input/output:2 outputs/3 inputs(configurable),+10V/-10V reference output.

Digital I/O:4 inputs(configurable),8 inputs/outputs(configurable),24V output(600mA)for external relays.

Serial fieldbus:RS485 for Modbus RTU or VDC communication,CAN for dual channel communication.

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