ABB UNITROL® 1000 Compact and powerful automatic voltage regulators

Why to choose ABB’s UNITROL 1000 FLEX Systems:

 • UNITROL 1020 FULL functionalities

 • All regulation types available: AVR/FCR/PF/ VAR/Limiters

 • Automatic synchronization

 • MODBUS TCP Communication

 • Rotating Diode Monitoring (RDM)

 • Reactive Load Sharing via RS485

Single or dual channel controllers: the main benefit of a dual channel system is its lower failure rate.

The changeover from one channel to the second channel is done automatically and bumplessly thanks to UNITROL 1000 technology.

This guarantees higher availability of the overall system. It also allows you to stay online if one of the 

channels fails. While a single channel failure would cause a trip of the system,

the dual channel controller allows you to find root cause and fix issue whilst the system stays running.

Full redundancy: in dual channel applications both the channels have independent power supply and allow to be fully redundant in the operation.

Gride code compliant product:

• Many aging units require to be updated to newer standards.

• When PSS is required by the Grid Authority, UNITROL 1000 has the integrated PSS as an option for both systems and devices. 

Meaning you are not required to use any additional device to ensure compliancy with the requirements.

• The UNITROL 1000 FLEX System is supporting an alternative excitation power supply which will keep the synchronous generator online in case of a network fault.

Premounted and tested systems: all systems are already mounted, wired and tested when leaving our factory.

The systems can be mounted into existing or new cabinets easily. This reduce the engineering and commissioning time,

but still offers later configuration on-site by simple configuration and editable documentation.