UNITROL 1000-15
Compact Automatic Voltage Regulator for
small synchronous machines
UNITROL® 1000-15 and UNITROL® 1000-40
Copyright © 2000 Photodisc, Inc.
UNITROL® 1000-15 Covers a wide application range
The UNITROL® 1000-15 is an Automatic Voltage Regulator of the latest design for synchronous
generators and synchronous motors. The implementation of the most advanced microprocessor
technology together with IGBT semiconductors enables it to be used in a wide range of applications.
The maximum output current is 15 A and the power input can be from an AC or DC source.
Compact design
The UNITROL 1000-15 has all the elements of
excitation control built inside. A powerful signal
processor running extensive control software
guarantees excellent performance under all
conditions. The chopper type power stage, which
can be supplied from an AC or DC power source,
enables the use in varied applications. The front
panel serves for easy monitoring and configuring.
The robust mechanical design guarantees a high
reliability. The applications shown here are
typical examples.
Shunt excitation with optional short circuit support
CAN bus
Redundant voltage regulator with Permanent Magnet
Generator (PMG) supply
Replacement of voltage regulators for generators with directcurrent exciter machines with UNITROL 1000-40. A suitable
solution for modernization of older mechanical or analog
voltage regulators.
The UNITROL 1000-PM40 is a microprocessor controlled chopper
type power stage with IGBT semiconductors. It is connected to
a UNITROL 1000-15 AVR by a CAN bus. This combination called
UNITROL 1000-40 covers a field current range up to 40 A.
LEDs (Light Emitting Diodes) on the front plate of the UNITROL
1000-PM40 provide the most important status information
Additional settings or commissioning are not required since the
power stage is automatically configured by the UNITROL 1000-15.
UNITROL 1000-40 is a perfect solution for retrofit applications
where field current between 15 A and 40 A is needed.
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UNITROL® 1000-15 Performance features
The highly efficient software of the UNITROL 1000 fulfills all requirements for the stable and reliable
operation of your synchronous machine.
Standard functions (BASIC)
• Voltage regulator with PID control algorithm
• Cos ϕ regulator with PID control algorithm
• Reactive power regulator with PID control algorithm
• Excitation current regulator (manual control) with PI
control algorithm
• Open loop control of output voltage for test purpose
• Internal digital reference values
• Bumpless changeover for all modes of operation
• Soft-start function
• Reactive current droop for network operation
• Volts-per-Hertz limiter
• Minimum excitation current limiter
• Three-step delayed maximum excitation current
limiter (temperature dependent)
• Reactive current limiter as a function of active
power (P/Q)
• Stator voltage limiter
• Stator current limiter (temperature dependent)
• Reactive power sharing between parallel machines by
RS 485 bus
• Voltage matching prior to synchronizing
• Standard Modbus RTU interface on RS 232 and RS 485
• Undervoltage detection to activate external current
boost for short circuit support (compounding)
• Built-in step test function
• Alarm and Trip signals
Optional functions
• Automatic synchronizing
• Synchrocheck function
• Monitoring of rotating diodes
• Power System Stabilizer, according to
• Enhanced monitoring functions for
redundant system, like PT monitoring
• Set point following based on CAN for
redundant systems
• Stand-by mode for redundant backup
channel system
The inputs and outputs are all located at the
bottom of the unit
Inputs and outputs
The UNITROL 1000-15 is equipped with
flexible interfaces:
• 4
• 4
• 3
• 2
digital inputs
digital outputs (or inputs)
analog inputs
analog outputs
The four digital outputs can be individually
redefined as digital inputs.
An RS 232 serial interface is used for PC
connection (CMT 1000).
UNITROL 1000-15
An optional RS 485 link can be used for
Modbus serial communication or for reactive
power sharing (up to 32 parallel units).
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UNITROL® 1000-15 Human Machine Interface
A practical and simple-to-operate panel on the unit enables easy access without a Laptop.
A user-friendly software tool “CMT 1000” simplifies the commissioning.
Local operation panel
All parameters can be set directly on the device, without any
additional equipment being necessary, for example:
• Configuration of inputs and outputs
• Selection of the measuring values which are shown on the display
• Setting and alteration of parameters
• Monitoring of the operation
Full operation is possible using only
four keys and an illuminated display
Example of parameter settings on the
User-friendly configuration and optimization with CMT 1000
All of the parameter settings for the UNITROL 1000
Family can be performed using “CMT 1000”
– Commissioning and Maintenance Tool – for
Microsoft® Windows™.
It is easy to follow how the changing of a
parameter affects the overall behavior of the
regulator by referring to the power chart and
the oscilloscope function. This means that the
optimum settings are quickly identified.
Screenshot of CMT 1000 Oscilloscope
CMT 1000 Oscilloscope
The power chart shows the actual operating
point and the setting curves of the P/Q
Page 4
• Four signals can be selected for graphic
• Parameter files and graphs can be saved
in numerical form for later analysis
• The resolution of the oscilloscope is
50 ms, and a total of 20 channels are
UNITROL® 1000 Systems
For customers who prefer engineered and ready-to-operate solutions, we offer standard or
custom-built systems. Every system leaves our factory fully tested.
Single-channel system
The single-channel solution, with all the necessary components
installed on a mounting plate, is frequently used for the excitation
of smaller synchronous machines, e.g. generators that are driven by
hydro turbine or by a diesel engine. This is also a commonly used
solution for motor excitation.
Plate with single-channel system
Dual-channel system
A dual-channel system with its 100 % redundancy is
used when there are higher requirements in terms of
reliability and security against failure.
Compact dual-channel system on a mounting plate
System installed in switchgear cabinet
A UNITROL 1000 voltage regulating system installed in
a switchgear cabinet is the best solution if no cabinet is
available for the installation of a mounting plate. System
includes necessary peripheral components, like excitation
breaker, interface relays, transducers, MCBs, etc.
AVR system in a small cabinet
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UNITROL® 1000 E-Learning
UNITROL 1000 E-Learning is an interactive training program. With it you will learn excitation
basics and how to operate a UNITROL 1000 device.
Learn to operate UNITROL 1000 via E-Learning
The interactive E-Learning training program provides
a comprehensive guide to installing and operating the
UNITROL 1000 voltage regulator. You will learn:
• Basic theory of a synchronous machine and excitation
• How to operate UNITROL 1000 using the front panel
• To control and operate UNITROL 1000 using
CMT 1000 on your PC
• How to determine and set parameters
• How to commission a UNITROL 1000
More information about this program can be found on
our Website www.abb.com/unitrol in the product’s
“Downloads” section.
Please use the “Contact us” section to order the
UNITROL 1000 E-Learning program on CD.
Screenshot of UNITROL 1000 E-Learning program
Mechanical dimensions of the devices
Dimensions of the
UNITROL 1000-15 (mm)
Page 6
Dimensions of the
UNITROL 1000-PM40 (mm)
Technical Data of UNITROL® 1000-15 & UNITROL® 1000-PM40
UNITROL 1000-15
Auxiliary supply
AC input voltage, 3-ph min/max
AC input voltage, 1-ph min/max
DC input voltage min/max
Maximum power consumption
Test voltage
Power electronics supply
AC input voltage, 1-/3-ph min/max
DC input voltage min/max
Frequency range
Test voltage
Measurement inputs
Generator voltage, 3-ph max.
Generator current, 1-ph
Network voltage, 1-ph max.
Frequency range
Excitation output
Continuous output current
Current de-rating for ambient
temperature > 50 °C
Overload (10 s maximum)
Overload (4 min maximum)
Internal voltage source
Auxiliary voltage source
Maximum output current
Analog inputs/outputs
Voltage range
Reference source for external potentiometer
Serial interface
For PC connection For paralleling of several devices For local extension devices
Voltage regulation
Ambient values
9 to 250 VAC
50 to 250 VAC
18 to 300 VDC
25 W
2 kV
0 to 250 VAC
0 to 300 VDC
40 to 600 Hz
2 kV
250 V
150 V
10 to 100 Hz
15 ADC
1 A / Kelvin
30 ADC
20 ADC
24 VDC
300 mA
± 10 V
100 kOhm
± 10 V
Operating temperature range
Storage temperature range
Shock EMC withstand
Mechanical data
Protection class
< 0.1%
EN 61000-6-2
EN 61000-6-4
5 kg
IP 20
Power electronics supply
AC input voltage, 3-ph min/max
AC input voltage, 1-ph min/max
DC input voltage min/max
9 to 250 VAC
50 to 250 VAC
18 to 300 VDC
Excitation output
with 3-phase AC or DC supply
Continuous output current
Overload (10 s maximum)
Overload (4 min maximum)
40 ADC
80 ADC
50 ADC
with 1-phase AC supply
Continuous output current
Overload (10 s maximum)
Overload (4 min maximum)
30 ADC
60 ADC
40 ADC
Serial interface
CAN bus
Mechanical data
RS 232
RS 485
CAN bus
0 to 60 °C
– 20 to +75 °C
2 mm f < 15 Hz
0.7 g f > 15 Hz
5 g, 11 ms impulse
Protection class
6.7 kg
IP 20
For ambient and AVR related
technical data please refer to the
UNITROL 1000-15 data to the left.
Page 7
Products of the UNITROL® 1000 Family
UNITROL® 1000 Family is a series of digital Automatic Voltage Regulators. A modern controller design
together with IGBT chopper power stage enables them to be used in a large variety of applications.
UNITROL 1000-7
UNITROL 1000-15
UNITROL 1000-7 is an AVR for
maximum 7 A continuous field
current. It is targeted at synchronous machine manufacturers and
system integrators who look for
a straight-forward and costeffective solution.
UNITROL 1000-15 is an AVR with
field current up to 15 A. A local
operation panel serves for easy
monitoring and parameter settings.
This compact and easily operated
unit covers a wide range of
UNITROL 1000-PM40 is the power
module extending the output
current of the UNITROL 1000-15
up to 40 A. A CAN bus interface
between the two units is used
for this plug&play combination,
UNITROL 1000-40.
3BHT 490 333 R0501
ABB Switzerland Ltd
Static Excitation Systems, Voltage Regulators
and Synchronizing Equipment
CH-5300 Turgi / Switzerland
Telephone: +41 (0) 58 589 24 86
+41 (0) 58 589 23 33
[email protected]
www.abb.com /unitrol
© Copyright 2004-2010 ABB. All rights reserved.
Specifications subject to change without notice.
ABB Switzerland Ltd in Turgi, Switzerland, is the worldwide Center of Excellence for Excitation and Synchronizing Systems
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