Arcteq AQ-ONE - Protection and Control Relay
Up to 150 kV, 3 Hardware Sizes, 0.2% Accuracy, 6–75 Hz, IEC 62443-4-2 SL1
Arcteq AQ-ONE is a scalable protection and control relay for power systems up to 150 kV, and can also be used in higher voltage grids depending on the application. One software environment defines functionality and configuration, while a single hardware platform in three mechanical sizes lets you match the relay to the space and I/O needs of each installation.
Functionality is delivered as function packages covering feeder, transformer, line, generator, motor, capacitor bank and voltage protection, as well as bay control, high resolution measurement and alarm annunciation. Packages can be expanded, upgraded or switched at any time as requirements change, with options such as line differential, distance and machine differential protection.
AQ-ONE is built on the foundations of the proven Arcteq AQ 200 series, carrying forward its high-accuracy power and energy measurement, an extensive selection of included communication protocols, and built-in cybersecurity in compliance with IEC 62443-4-2 Security Level 1.
Key Features
- One Software for All Devices
- Same firmware, logic and behavior in every AQ-ONE relay
- Configuration, setting and commissioning with a single tool (AQtivate)
- Consistent engineering workflow and reduced training needs for maintenance staff
- One Hardware Platform – Three Sizes
- Choose the relay size that fits your space and I/O requirements
- Cards fully compatible across all three hardware sizes – simplified spare parts stock
- Flexible Function Packages
- Application packages include the functions typically needed for each application
- Additional packages: line differential (87L), distance (21), directional, machine differential (87T/87G/87M), synchronous motor, AVR (90), synchronizer (25) and more
- Functionality can be expanded or switched at any time
- High-Accuracy Measurement
- Power and energy measurement with up to 0.2% inaccuracy
- Accuracy maintained throughout the 6–75 Hz frequency range
- Communication and Cybersecurity
- Extensive selection of communication protocols always included
- Built-in cybersecurity in compliance with IEC 62443-4-2 Security Level 1
Typical Applications
- Power Distribution and Transmission
- Feeder and line protection, including line differential and distance protection
- Transformer protection with automatic voltage regulation (AVR)
- Bay control and voltage protection in substations
- Power Generation
- Generator protection and synchronizing
- Interconnection protection with transfer trip for distributed generation
- Industry and Marine
- Motor protection, including synchronous motors
- Capacitor bank protection with power factor control
- Alarm annunciation with up to 128 programmable alarm windows
Technical Specifications
| Specification |
Value |
| Device Type |
Protection and control relay |
| Voltage Level |
Optimized for power systems up to 150 kV; higher voltages depending on application |
| Hardware |
Three mechanical sizes, cards compatible across all sizes |
| Application Function Packages |
Feeder, Transformer, Line, Generator, Motor, Capacitor Bank, Voltage, Bay Control, High Resolution Measurement, Alarm Annunciator |
| Additional Function Packages |
Line Differential, Distance, Directional, Machine Differential, Synchronous Motor, Single Phase Tripping, AVR, Power Factor Controller, Synchronizer, Power Measurement |
| Measurement Accuracy |
Power and energy: up to 0.2% inaccuracy |
| Frequency Range |
6–75 Hz |
| Configuration Software |
AQtivate |
| Cybersecurity |
IEC 62443-4-2, Security Level 1 |
Additional Features
- Built on the proven Arcteq AQ 200 series platform
- Online product configurator generates order code and configuration-specific datasheet
- Fast Modbus included in the High Resolution Measurement package
Certifications & Standards
- IEC 62443-4-2 Security Level 1 (cybersecurity)