Products

The ABB UNK4806B-G (HIER455232) is a rack or chassis unit designed for the ABB UNITROL® 6000 excitation system, as implied by its "Unitrol M Rack" designation. Its core function is to serve as the structural and electrical backbone of the excitation system, housing and interconnecting critical components such as the control and power electronics necessary for regulating the voltage and current of large synchronous generators and motors.

The ABB UN1024c-P (HEIR318629R1) is a rotor current limiter module from the UNITROL® 6000 excitation system series. Its core function is to monitor and limit the rotor (field) current within safe operating limits, protecting the synchronous generator or motor from thermal overload and ensuring stable operation by preventing excessive field current that could damage the rotor windings.

The ABB UN1006a-P V1 (HEIR448085R1) is a supervisory module from the UNITROL 6000 series excitation system. Its core function is to serve as a central monitoring and control unit within the excitation system, processing analog and digital signals from the generator and power grid to ensure stable voltage regulation and protection of synchronous machines.

The ABB UN 1001c-P V1 (HIER445519R2) is a Gate Control Module designed for ABB's UNITROL® and SYNCHROTACT® automation platforms. This specialized module performs the critical gate control function within the power electronics control architecture, providing precise gating signals for power semiconductor devices. As a dedicated hardware component within ABB's excitation and synchronization systems, it ensures reliable and deterministic gate control for critical power conversion applications.

The ABB UN 0950a-P VAR.1 (HEIR445976R1) is a Frequency Matcher Module designed for ABB's SYNCHROTACT 3 synchronization systems and UNITROL excitation control platforms. This specialized module performs the critical frequency matching function required during generator synchronization, automatically adjusting the generator frequency to match the line frequency before circuit breaker closure . As a dedicated hardware component within ABB's synchronization and excitation architecture, it ensures precise, reliable frequency matching to facilitate safe and bumpless paralleling of synchronous generators with the electrical network.

The ABB UN 0941c-P VAR.1 (HIER449641R1) is a Command Generation Module designed for ABB's UNITROL® and SYNCHROTACT® 3 automation platforms . This specialized module performs the critical command generation function within the control architecture, providing precise operational parameters for power system control applications . As a dedicated hardware component within ABB's excitation and synchronization systems, it ensures reliable and deterministic command output for critical operational parameters. The module is engineered for high-performance environments, facilitating seamless communication within control systems and efficient execution of control strategies.

The ABB UN 0940a-P VAR.1 (HEIR444414R1) is an Angle Measure Transducer Module designed for ABB's SYNCHROTACT® 3 synchronization systems and UNITROL® excitation control platforms. This specialized module performs the critical angle measurement function required during generator synchronization, providing precise phase angle data to enable safe and accurate paralleling of synchronous generators with the electrical network. As a dedicated hardware component within ABB's synchronization and excitation architecture, it ensures reliable and deterministic angle measurement to facilitate bumpless circuit breaker closure during the synchronization process.

The ABB UN 0911b-P VAR.1 (HEIR448648R1) is a Voltage Matcher Module designed for ABB's SYNCHROTACT® 3 and UNITROL® excitation control systems . This specialized module performs the critical voltage matching function required during generator synchronization, automatically adjusting the machine voltage to match the line voltage level before circuit breaker closure . As a dedicated hardware component within ABB's synchronization and excitation platforms, it ensures precise, reliable voltage matching to facilitate safe and bumpless paralleling of synchronous generators with the electrical network.

The ABB UN 0908a-P VAR.1 (HEIR319306R1) is an Operating Mode Selection Module designed for use within ABB's UNITROL® excitation control systems. This module provides critical mode selection functionality, allowing operators to switch between different operating states such as local/remote control and automatic/manual regulation modes. As a specialized component of ABB's UNITROL platform, this module ensures reliable and deterministic mode transitions essential for synchronous machine excitation systems used in power generation and industrial applications.

The ABB UN 0908a-P VAR.1 (HEIR319306R1) is an Operating Mode Selection Module designed for use within ABB's UNITROL® excitation control systems. This module provides critical mode selection functionality, allowing operators to switch between different operating states such as local/remote control and automatic/manual regulation modes. As a specialized component of ABB's UNITROL platform, this module ensures reliable and deterministic mode transitions essential for synchronous machine excitation systems used in power generation and industrial applications.

The ABB UNS 2881B-P,V1 (3BHE009319R0001) is a high-performance measurement unit board (MUB) designed for ABB's UNITROL 6800 excitation system. . Its core function is to collect and process various analog and digital signals from the excitation system—such as voltage, current, and temperature—and transmit this data to the main COB control board for decision-making, ensuring precise voltage regulation for generators.

The Allen Bradley 2711P-K12C6D1 is a PanelView Plus 1250 operator interface terminal featuring a 12.1-inch full-color display and integrated keypad input. Designed for demanding industrial environments, this HMI provides reliable operator control and monitoring capabilities for Allen-Bradley PLC-5, SLC 500, and MicroLogix systems. The terminal's DH+, DH-485, and RIO communication interfaces (designated by "6" in the model number) enable reliable data exchange with legacy Allen-Bradley controllers, making it ideal for plants maintaining existing Data Highway network infrastructure. This terminal is particularly suited for applications requiring migration-free replacement of existing PanelView units without changing the network architecture. The keypad input design offers tactile feedback and reliable operation in environments where touchscreens may be less practical—such as when operators wear gloves or in areas with potential screen contamination.