Overcurrent protection for line protection

Why SIPROTEC 7SJ86?

The SIPROTEC 7SJ86 overcurrent protection device provides backup and emergency protection for line protection systems. It delivers solutions for protection, control, automation, monitoring and power quality.

Prevent extensive damage and maintain continuous operation with reliable backup protection. The SIPROTEC 7SJ86 offers overcurrent protection for all voltage levels with 3-pole tripping. Optimize tripping times using directional comparison and protection data communication, detecting various ground faults. Gain flexibility and comprehensive system management with the modular structure and DIGSI 5 engineering tool.

Key benefits

Provide reliable line protection

Offer backup and emergency protection for line devices. Detect and trip 3-pole short circuits across diverse networks and voltage levels. Identify ground faults in isolated or arc-suppression-coil systems for stable operations.

Enhance operational safety and availability

Enhance safety with powerful protection functions and a user-friendly design for easy device and software handling. Maintain high availability in extreme conditions with conformal coating on electronic boards for robust operation.

Strengthen system security and compliance

Implement robust cybersecurity measures per NERC CIP and BDEW Whitepaper requirements. Protect your critical infrastructure for a compliant environment.

Featured capabilities

Modular overcurrent protection with flexible I/O

Provide robust 3-pole overcurrent protection. Select 3 variants with 4 current and 4 voltage transformers. Flexibly adjust 11-23 inputs and 9-25 outputs within the SIPROTEC 5 modular system for adaptation.

Advanced ground fault and system protection

Detect ground faults via transient ground fault, harmonic detection, admittance measurement and pulse detection. Fault locator plus provides accurate location. Arc protection delivers safety.

Integrated communication and cybersecurity

Integrate Ethernet RJ45 for DIGSI 5 and IEC 61850 communication. Add up to 4 pluggable modules for redundant protocols like Modbus TCP and PROFINET IO.

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