Multifunction protection – SIPROTEC 7SJ66

Why SIPROTEC 7SJ66?

SIPROTEC 7SJ66 provides multifunctional protection, control and monitoring for high and medium voltage networks. Safeguard asynchronous motors and offer backup for transformer differential protection.

Electrical networks and motors need reliable protection for stability. SIPROTEC 7SJ66 includes flexible protection functions. Customize up to 20 functions to meet your specific requirements for precise control of circuit breakers.

Adapt protection to your network needs with functions like rate-of-frequency-change or reverse power protection. Use the integrated graphical logic editor (CFC) to implement automation functions. Integrate the device into modern communication networks through interfaces for efficient data exchange and system oversight.

Key benefits

Improve reliability

Implement comprehensive protection for high and medium voltage networks, motors, and backup. Automate switchgear operations with your defined logic for interlocking.

Reduce downtime

Monitor operational values, energy metering and circuit-breaker wear. Access 8 oscillographic fault records for detailed analysis and use this data to manage assets, reduce downtime and extend equipment lifespan.

Streamline integration

Integrate the device into modern communication networks using standard protocols. Exchange data easily for improved system interoperability.

Featured capabilities

Comprehensive protection functions

Configure up to 20 protection functions for your operation. Implement specialized protections, like rate-of-frequency-change or reverse power, to safeguard a variety of network conditions.

Communication protocols and interfaces

Connect your device using protocols like IEC 61850, DNP TCP and Modbus RTU. Utilize electrical and optical interfaces with RSTP for redundancy. Integrate into modern networks for reliable data exchange.

Custom logic and automation

Implement your own functions using the integrated graphical logic editor (CFC). Control circuit breakers and switching devices with user-defined logic. Automate switchgear, including interlocking.