Product Description
The ABB UNITROL UN 0503 b-P Var. 1 is a microprocessor-based unit that provides voltage regulation for excitation control of synchronous generators. It is designed for use in a wide range of applications, including power plants, industrial facilities, and marine vessels.
The UN 0503 b-P Var. 1 features a number of advanced features, including:
- Proportional-integral-derivative (PID) control for accurate and stable voltage regulation
- Overvoltage and undervoltage protection
- Loss-of-excitation protection
- Generator synchronization
- Reactive power control
- Fault detection and isolation
The UN 0503 b-P Var. 1 is a compact and easy-to-use unit that can be mounted in a standard panel or enclosure. It is also equipped with a variety of communication interfaces, making it easy to integrate into existing control systems.
Product Parameters
- Input voltage range: 190V to 270V AC
- Output voltage range: 0V to 250V DC
- Output current: 0 to 20A
- Accuracy: ±0.5%
- Operating temperature range: 0°C to 55°C
- Storage temperature range: -20°C to 70°C
Usage Method
The ABB UNITROL UN 0503 b-P Var. 1 is typically used in conjunction with a voltage regulator to control the excitation of a synchronous generator. The voltage regulator is responsible for maintaining the generator’s terminal voltage at a constant level, regardless of changes in load or speed.
The UN 0503 b-P Var. 1 provides the voltage regulator with a feedback signal that is proportional to the generator’s terminal voltage. The voltage regulator then uses this feedback signal to adjust the excitation current to the generator, thereby maintaining the terminal voltage at the desired level.
Product Application
The ABB UNITROL UN 0503 b-P Var. 1 is a versatile unit that can be used in a wide range of applications, including:
- Power plants: The UN 0503 b-P Var. 1 can be used to voltage regulation for synchronous generators in power plants of all sizes.
- Industrial facilities: The UN 0503 b-P Var. 1 can be used to voltage regulation for synchronous generators in industrial facilities, such as factories and mills.
- Marine vessels: The UN 0503 b-P Var. 1 can be used to voltage regulation for synchronous generators on ships and other marine vessels.
In addition to its primary use in voltage regulation, the ABB UNITROL UN 0503 b-P Var. 1 can also be used for a variety of other purposes, such as:
- Reactive power control: The UN 0503 b-P Var. 1 can be used to control the reactive power output of a synchronous generator. This can be useful for improving the power factor of a system or for providing reactive power support to other generators or loads.
- Generator synchronization: The UN 0503 b-P Var. 1 can be used to synchronize a synchronous generator with the grid or with other generators. This is essential for ensuring that the generator can operate safely and reliably.
- Fault detection and isolation: The UN 0503 b-P Var. 1 can be used to detect and isolate faults in a synchronous generator or its excitation system. This can help to prevent damage to the generator and to ensure that the system remains stable.
Overall, the ABB UNITROL UN 0503 b-P Var. 1 is a versatile and powerful unit that can be used for a wide range of applications in the power generation and distribution industry.
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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