ABB UNITROL-6080 excitation system
ABB is the world leading volume supplier of UNITROL automatic
voltage regulators (AVR) and static excitation systems (SES) for any
type and size of power plant - known to provide a high return on
investment since many years.
UNITROL 6080 AVR/SES are designed for small to me dium power applications and brings a new benchmark in
flexibility, reliability and connectivity.
Key benefits
+ Ultimate control performance keeps
generator within safe limits
High performance control platform AC 800PEC
+ Easy system operation, monitoring and
maintenance
User-friendly excitation control terminal (ECT)
+ Short delivery time
Uses well-proven prefabricated functional modules
+ Optimized contribution to network
stability
Integrated power system stabilizer (PSS) options
+ Compact design, space saving
installation
No rear access required – can be positioned close to a
wall or back-to-back
+ Offline tuning with closed loop real
time generator simulator
Offline system tuning and testing of severe system
conditions (integrated or external option)
+ Efficient product life cycle management
Extended life time of assets with minimum costs
+ Technical support always within
your reach
ABB’s global excitation service network
Tailor-made system
Main features
Selected applications
UNITROL 6080 uses well-proven prefabricated functional
modules. With single / double channel configuration (additional
backup channel on request) and a wide selection of thyris tor bridge modules, the system can be configured to meet all
field data and availability requirements.
+ Selectable redundancy for control, power module, cooling,
I/O, communication and auxiliary power
+ 64 bit floating point CPU
+ No restrictions regarding data scaling and range
+ Fast and precise measurements and control scheme
+ Compliant with international and local standards
+ Complete range of functionality to cover any grid codes
+ IEC 61131 application software programming with ABB
Control Builder M
+ Fully compatible with ABB’s Extended Automation
System 800xA
+ Pump storage power plant, Ifn 760 A
+ Nuclear power plant AVR, Ifn 180 A, 400 Hz supply
+ Engineered solutions
+ Pole changing for dual speed machines
+ Online supply transfer
+ Electric braking
+ Sheet metal partitions between channel and control
compartments

Engineering concept
UNITROL 6080 systems can be built with up to three control /
converter channels: Two fully featured channels and one backup
channel for emergency generator control. Each channel is able
to handle the maximum field current and provides diagnostic
and maintenance functions including transient recorder. The
UNITROL 6080
SES/AVR
UNITROL 6800
SES
Closed-loop
control
Single channel Yes Yes
Double channel Yes Yes
Backup channel Yes 1) Yes
Converter
module type
D1…D5
UNL 13300 2)
D5
UNL 13300
UNL 14300
Converter
redundancy
1+1
n-1 / max. modules
Yes
No
Yes
Yes / 8
Input data Max. AC voltage
Rated frequency
690 V
50 / 60 – 480 Hz 3)
1,500 V
50 /60 Hz
Max. output
data
Cont. DC current
Ceiling voltage
1,600 A
850 V
10,000 A
1,900 V
power interface (PIN) and gate driver interface (GDI) provide
potential barriers inside the power converter. At system level,
combined input/output (CIO) devices are used to interface
with internal and external analog and digital I/O signals.
These devices are fully redundant, if required.
1) With third converter module for max. continuous DC current ≤ 800 A
2) Engineered solution on request
3) >50 / 60 Hz for AVRs only; single phase supply for AVRs also available