Month: November 2025

Easy to use and install

ABB UNITROL® 1000 Compact System comes equipped with an extensive number of technical highlights

that make it easy to use and fast to install. Ideal for power plants and shipyards, very limited excitation

expertise is required to handle it.

Advantages

• Space-saving design: Among the smallest in

its class, perfect for compact spaces

• Cost-effective: Reduced installation,

commissioning, and maintenance costs due

to its compact, pre-engineered setup.

• Cyber-Secure: Compliant with DNV Cyber Security Profile 1.

• High Availability: Dual-channel version

ensures continuous operation even if one channel fails.

• Fast to commission, even with limited

experience with excitation systems through

the AVR & PSS tuning assistant software.

• Grid code compliant: Embedded PSS

functions ensure compliance without extradevices.

• Experts support: Experts available remotely

or onsite for commissioning support. In

house expertise for regulation optimization

and grid connection studies

The optimal pre-engineered control solution for land based and marine applications

When space and speed are of

essence, a small pre-packaged and

pre-tested excitation system is the

key to a successful project delivery.

ABB UNITROL® 1000 Compact

System is a pre-engineered

excitation system, conveniently

mounted on a backplate for easy

installation and seamless integration

with any generator control system.

As one of the smallest systems in its category,

it is the perfect solution for locations where

space is critical, making it ideal for new

installations or upgrade projects.

Designed for applications requiring single or

dual channel Automatic Voltage Regulators

(AVR), every version of the new Compact

System comes equipped with UNITROL® 1020 FULL.

This ensures all functionalities are inherited and

compliant with the DNV Cyber Security Profile 1

(based on IEC 62443) regulations. Additionally,

Power System Stabilizing (PSS) capabilities can

be optionally included.

All UNITROL® 1000 Compact Systems are pre

mounted and wired on a backplate, and

thoroughly tested before delivery, significantly

reducing the need for onsite adjustments and

minimizing wiring errors.

Temperature effects

Ambient temperature within the permissible range

– At zero point: ≤ 2 % of range per 10 °C – At sensitivity without thermostat:

≤ 3 % of the measured value per 10 °C – Sensitivity with thermostat (optional):

Sensitivity with thermostat (optional): ≤ 2 % of measured value per 10 °C

Thermostat temperature = 55 °C

Barometric influences – At zero point: No influence – Sensitivity during pressure correction by means of

integral pressure sensor

Per 1 % barometric pressure change: ≤ 0.2 % of measured value

Barometric pressure variation

If a hose is used for the internal gas line, the pressure sensor is located in the sampling gas line.

If a hose is used for the internal gas line, the pressure sensor is routed externally through the hose.

Operating range of the pressure sensor: pabs = 600-1250 hPa

Power supply influences

Voltage and frequency within the permissible range: no effect

Measurement principle

Non-dispersive infrared absorption photometers in the λ = 2.5-8 µm wavelength range can 

measure up to 4 compositions using 1 or 2 beam paths and 1 or 2 receivers per beam path in one gas

path or two independent gas paths.

Measure up to 4 components in one gas path or two independent gas paths with 1 or 2 receivers per

beam path.

Impact Effects

Flow rate effects

Flow rates in the range of 20-100 liters/hour: within the detection range

Correlated gas effects/cross sensitivity

Analyzer configuration must be aware of sample gas composition.

Selective measures to reduce associated gas effects (optional): Installation of interference filters or filter

units, internal electronic cross-sensitivity correction of one sample component by other sample

components measured by the gas analyzer.

Functional range and ordering

– Analog output module with 2 analog outputs,

– Analog output module with 2 analog outputs, digital input/output module with 4 digital inputs and 4

digital outputs and

Digital input/output module with 4 digital inputs and 4 digital outputs and

– Modbus modules with RS485 and RS232 interfaces.

Housing design

The EL3020 Gas Analyzer is designed in a 19-inch housing with 3 height units and IP20 protection.

Description of Analyzer Performance Characteristics

The performance characteristics of the analyzers are defined according to the international

standard IEC 1207-1:1994 “Performance statements for gas analyzers”.

They are based on N2 as a companion gas. When measuring other gas mixtures,

compliance with these characteristics can only be ensured if their composition is known.

Electrochemical oxygen sensors can only be used in combination with the Uras26 infrared photometer.

Magnos206 Oxygen Analyzer and Caldos27 Thermal Conductivity Analyzer can also be used.

Can also be used in conjunction with the Uras26 Infrared Photometer.

Integral air inlet

The integral air inlet (option) is available in two versions. It includes

– Microfilter and flow sensor module

– or microfilter, solenoid valve, pump, coarse filter, capillary tube and flow sensor module.

Electrical interface

Electrical interfaces for outputting measured values and communicating with external systems

include Electrical interfaces for communicating with external systems include:

– Integrated Ethernet-10/100BASE-T interface (for service and configuration and configuration)

Integrated Ethernet-10/100BASE-T interface (for service and configuration purposes)