The UNITROL 5000 is the most powerful product in the ABB Switzerland
UNITROL® series of excitation systems. The microprocessor-based voltage
regulator uses the latest available technology. The development is based
on more than 40 years experience with semiconductor voltage regulators
and more than 15 years experience with microprocessor technology for
this application
Application areas
• Static Excitation Systems (SES) for
50 Hz, 60 Hz or 16 2/3 Hz power supply
with field currents from 1000 ADC to
more than 10,000 ADC
• Automatic Voltage Regulating Systems
(AVR) for exciter machines with special
functions, supply frequencies from
16 2/3 Hz to 400 Hz.
Regulator highlights
Additional regulator redundancy
• Dual-channel system with backup
current regulator
Digital input processing
• Three-phase voltage measurement
• Three-phase current measurement
• Digital processing of the input values
with a signal processor
Additional functions
• Software solutions only – without
additional hardware
Additional inputs and outputs
• Easy to extend to the required number
with ARCnet® devices
• Digital and analog
Event and error log
• With real-time stamp
• Remote interrogation possible.
Power section highlights
Power converter redundancy
• Up to a maximum of eight parallel
power converters are possible
• Power converter redundancy is completely
independent of the regulator
configuration
Intelligent power converter
electronics
• Active equalization of the current
between the power converters
• 4-quadrant operation (negative
excitation current is possible)
• Thyristor current monitoring
• Fan control and monitoring
• Monitoring of fuses, power converter
temperature and cooling-air flow
• Bridge current display.
