Protection equipment

The protection equipment family ACOS 300 offers innovative grid protection technology. ACOS 300 is designed for the reliable protection of medium-voltage grids and transformers on the high-voltage level, and for their monitoring and control.

The ACOS 300 series features the following highlights:

• Complete portfolio of overcurrent, distance and differential protection functions for medium and high-voltage systems
• Comprehensive control and monitoring functions
• 3,5‘‘ colour touch display
• Integrated web server
• Configuration via function plan according to IEC 61131-3
• Full communication capability according to IEC 61850 and IEC 60870-5-103/-104

Furthermore, a wide range of additional functions is available as protection reserve. For the implementation of individual protection concepts in medium-voltage grids, the following protection devices with integrated control function (combined protection) are available:

• ACOS 351 for non-directional overcurrent-time protection
• ACOS 353 for directional overcurrent-time protection
• ACOS 354 for distance protection
• ACOS 355 for line differential protection
• ACOS 357 for motor protection

he following devices (combined protection) have been specially designed for the protection of high performance two-winding and three-winding transformers:

• ACOS 392 for transformer differential protection for two-winding transformers
• ACOS 395 for transformer differential protection for three-winding transformers

IDS protection devices are suitable for seamless integration into the digital station automation system IDS SAS and into third-party systems.