Description
The ABB UNITROL1000-15 is a compact and powerful automatic voltage regulator (AVR) designed to provide precise voltage control for synchronous machines ranging from small to medium power sizes, up to 15 A continuous excitation current. It is widely used in power generation plants, marine propulsion systems, traction locomotives, and industrial synchronous motors where stable and reliable voltage regulation is vital for efficient and safe operation. The ABB UNITROL1000-15 excels in harsh industrial environments, managing voltage fluctuations and responding rapidly to load changes, making it ideal for both land-based and marine power applications.
As part of the ABB UNITROL 1000 product family, the UNITROL1000-15 is engineered with dual control and communication processors, allowing separate processing paths to optimize system performance and reliability. It integrates easily with process control and automation systems thanks to flexible, configurable inputs/outputs and extensive communication options, including Ethernet-based fieldbus interfaces. The unit’s design supports a wide power input voltage range from 190 to 600 V DC and AC, accommodating diverse excitation systems. Its versatility makes it a valuable component for engineers and integrators focused on reducing downtime and enhancing operational stability.
- UNITROL1000-15
Among its technical strengths, the ABB UNITROL1000-15 offers high accuracy voltage regulation with less than ±0.5% static voltage error and fast response times below 20 milliseconds using 3-phase measurements. It supports excitation currents up to 15 A continuously, with temporary overload capability reaching 30 A for short durations, enabling flexible control over generator excitation. The device features a robust aluminum baseplate ensuring durability and vibration resistance, ideal for mounting within machine terminal boxes or control cabinets. Local human-machine interface (HMI) with intuitive displays and soft keys simplifies operation and commissioning, while built-in diagnostics facilitate easy troubleshooting.
| Parameter | Value |
|---|---|
| Model | ABB UNITROL1000-15 |
| Brand | ABB |
| Product Type | Automatic Voltage Regulator (AVR) |
| Continuous Excitation Current | 15 A |
| Overload Current (temporary) | 30 A (10 seconds) |
| Input Voltage Range | 190 to 600 V DC/AC |
| Voltage Regulation Accuracy | ±0.5% |
| Response Time | < 20 ms (3-phase measurement) |
| Communication Interfaces | Ethernet Fieldbus, Modbus RTU |
| User Interface | Local HMI with LCD and soft keys |
| Operating Temperature Range | -40°C to +70°C |
| Mechanical Design | Robust aluminum baseplate, vibration resistant |
| Mounting | Machine terminal box & control panel |
Related ABB products complementing the UNITROL1000-15 include UNITROL 1010 and 1020 AVRs, power modules for extending output, and advanced excitation controllers used in high-power synchronization and grid code compliance applications.
Installation requires adequate ventilation, vibration isolation, grounding, and wiring according to ABB standards to ensure precise voltage regulation and safe operation. Routine maintenance involves monitoring status LEDs, performing software diagnostics with ABB tools, and verifying calibration to sustain optimal excitation system performance.





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