IDS ACOS 300 Protection Devices

Short circuits and earth faults do not only lead to grid outages and, consequently, incalculable risks, but also cause damage to switchgear and, in the worst of cases, to persons. More than ever, efficient solutions for protection and control are required to meet these and other challenges that have arisen from the injection of renewable energies into the power grids.

The ACOS 300 protection devices from IDS offers reliable protection for medium- and high-voltage grids and installations, including their operation and monitoring.

Benefits of ACOS 300

  • A complete portfolio of protection functions, combined with new functions for decentralised energy production networks (QU protection, automatic under-frequency load shedding))
  • Compact protection and bay control devices for all sorts of tasks
  • Fast adaptations to changing market requirements
  • Modular structure: all devices are based on a uniform hard- and software, thereby reducing service and maintenance costs
  • Uniform engineering workflow
  • User-friendly and targeted operating concept
  • Flexible solutions for secondary equipment in existing installations

Types of Protection Devices

The ACOS 330 Series

The ACOS 330 series features small-size and compact protection devices that are economical and can be universally used, which makes them ideal for concepts where the focus is on protection functions.

  • ACOS 331 Non-directional overcurrent time/motor protection
  • ACOS 333 Directional overcurrent protection
  • ACOS 334 Distance protection
  • ACOS 335 Line differential protection
  • ACOS 338 Voltage/frequency protection

The ACOS 350 / 390 Series - Compact Protection Devices

The ACOS 350/390 series features modular, scalable and versatile protection devices for individual applications. These compact protection devices are suitable for new installations and for automation tasks in modern switchgear, in any type of environment.

  • ACOS 351 Non-directional overcurrent time protection
  • ACOS 353 Directional overcurrent protection
  • ACOS 354 Distance protection
  • ACOS 355 Line differential protection
  • ACOS 357 Motor protection
  • ACOS 392 Transformer differential protection (two-winding transformers)
  • ACOS 395 Transformer differential protection (three-winding transformers)

Please click Downloads for an overview of all devices and their scope of functions.

Protection Functions for all Applications

The multifunctional protection devices from IDS feature a wide range of protection function blocks (LINK protection function matrix) which enable the implementation of extensive protection concepts. These blocks are based on primary protection functions which, in part, are able to operate directionally.

  • Overcurrent protection
  • Earth fault protection
  • Distance protection
  • Differential protection
  • Motor protection
  • Transformer protection

Supplementary Functions for “New“ Smart Grids

Rapid changes in power grids require independent protection elements. Thanks to certified protection blocks in our devices, IDS is able to fulfil the respective market requirements.

  • Reactive power-undervoltage protection (QU protection)
  • Automatic under-frequency load shedding (UFLS protection)

Our Portfolio - Your Benefit

For the protection of your installations, we are able to offer both individual services and turn-key complete solutions, from the preparation of concepts and planning services through to installation and commissioning as well as tests and the documentation of all activities.

In order to guarantee a 24/7 power supply of your customers, it is often necessary to upgrade installations or overhaul or replace secondary equipment while the system is still in operation. We pursue a comprehensive approach in order to

  • Find the most economical solution
  • Ensure that your system is future-proof
  • Guarantee interoperability and
  • Ensure the necessary degree of security and availability.

We are happy to prepare customized solutions from one source.

Further Information

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