Basic Features

• Overcurrent protection as backup / emergency line protection for all voltage levels with 3-pole tripping
• Optimized tripping times due to directional comparison and protection data communication
• Uses pulse detection method to detect transient ground faults
• Fault Locator Plus function with inhomogeneous line sections and targeted automatic overhead-line section reclosing (AREC) to accurately identify fault location
• Arc protection
• Automatic frequency relief for underfrequency load shedding, taking the changed infeed conditions arising from decentralized power generation into consideration
• Protection from overvoltage and undervoltage
• Frequency and frequency change protection for load shedding applications
• Configurable power protection (active or reactive)
• Directional reactive power undervoltage protection (QU protection)
• Circuit-Breaker failure protection and reignition monitoring
• Reliable data transmission via PRP and HSR redundancy protocols
• Extensive cybersecurity functionality (e.g. role-based access control (RBAC), protocolling security-related events, signed firmware or authenticated network access IEEE 802.1X)
• Provides simple, quick and secure access to the device data via a standard Web browser to display all information, diagnostic data, vector diagrams, single-line diagrams, and device display pages
• Phasor Measurement Unit (PMU) for synchrophasor measured values and IEEE C37.118 protocol
• Time synchronization using IEEE 1588
• Enables powerful fault recording (buffer for a max. record time of 80 sec. at 8 kHz or 320 sec. at 2 kHz)
• Allows flexible adjustment of I/O quantity structure within the scope of the SIPROTEC 5 modular system