Product Description
ABB UNITROL UN 0026 is a Voltage Regulator Module for the UNITROL 1000 series of excitation systems. It is a plug-in module that can be easily replaced in the field. The UN 0026 is responsible for regulating the voltage of the generator by controlling the excitation current.
Product Parameters
- Input voltage: 100-240 V AC
- Output voltage: 0-10 V DC
- Output current: 0-20 mA
- Accuracy: +/- 0.1%
- Temperature range: -20 to +70 °C
Usage Method
The UN 0026 is installed in the UNITROL 1000 excitation system cabinet. It is connected to the generator voltage and current sensors, as well as to the exciter field. The UN 0026 is configured using the UNITROL CMT 1000 commissioning and maintenance tool.
Product Application
The UN 0026 is used in a variety of applications, including:
- Synchronous generators
- Industrial machines
- Power generation plants
- Oil and gas industry
- Marine applications
Example Application
The UN 0026 can be used to regulate the voltage of a synchronous generator in a power generation plant. The generator is connected to the electrical grid, and the UN 0026 ensures that the generator voltage is maintained within the specified limits. This helps to ensure a reliable and stable supply of electricity to consumers.
Note: The UN 0026 has been superseded by the UN 0026R1 module. However, the UN 0026 is still widely used in existing installations.
UNITROL® Excitation Systems
Excitation systems are a key component in many power generating units used by plant owners and operators to achieve reliability of operations, stability and fast transient response of their assets, as per grid requirements.
UNITROL® 1000 Series
The UNITROL® 1000 Series is ABB’s brushless excitation system for applications using synchronous machines ranging from 100kVA to 80MVA.
UNITROL® 1020
UNITROL 1020 is the voltage regulator intended for small and medium synchronous generators and industrial machines. It combines performance control and power circuits with a simple mechanical design provides high performance in a wide range of temperature and vibration conditions .
With built-in dual channel support, advanced load sharing between machines operating in parallel, rotating diode monitoring, automatic synchronizing and several integrated communication options, this automatic voltage regulator (AVR) is manufactured using the most advanced microprocessor technology and IGBT semiconductors allowing current output up to 20 ADC for continuous operation.
UNITROL® 1010
UNITROL® 1010 is the Indirect Excitation System for small and medium synchronous generators and industrial machines. Its advanced microprocessor technology and IGBT semiconductors allow for current output up to 10 ADC for continuous operation.
With built-in dual channel support, advanced load sharing between machines operating in parallel, rotating diode monitoring, automatic synchronizing and several integrated communication options, UNITROL 1010 provides high performance in a wide range of temperature and vibration conditions.
UNITROL® 1005
UNITROL 1005 is the smaller component of the family designed for low-end excitation application with maximum excitation current up to 5 ADC.
Like all UNITROL1000 products, UNITROL 1005 is based on the same target software source code and share the same simulation models that makes it very suitable for demanding grid code applications.
Included in the package is CMT1000, the tool for focused and fast commissioning.
UNITROL® 1000 Flex Systems
UNITROL® 1000 FLEX Systems are prepackaged solutions for applications requiring single or dual channel controllers. All systems are fitted with UNITROL® 1020 FULL as a standard device, leveraging the best solution for optimum price and flexible project adjustment constraints.
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