Siemens SIPROTEC Compact 7SD80 Line Differential Protection
The 7SD80 Line Differential Protection relay is designed for selective protection of power cables and overhead lines up to 24 km in length, with all types of star point configurations. It uses a phase comparison algorithm for fast and stable line protection, ideal for industrial and distribution grids. The relay offers protection through direct communication via copper wires, optical fibers, or both, ensuring redundancy. Its wide range of both directional and non-directional protection functions makes it suitable for various applications, including emergency and backup protection
Technical Specifications
Protection for power cables and overhead lines up to 24 km
Phase comparison algorithm for fast and reliable protection
Communication redundancy via copper or optical fiber
Configurable for multiple fault scenarios (overcurrent, ground-fault, etc.)
Direct communication interface with the ability to send inter-tripping commands and binary signals
Programmable logic for advanced customization (CFC)
9 programmable function keys
Support for Ethernet redundancy protocols (RSTP, PRP, HSR)
Protection against external and internal faults
Communication via IEC 61850, MODBUS RTU, and other protocols
Built-in monitoring and diagnostic features (e.g., trip circuit supervision, fuse failure monitoring)
Up to 24 km of fiber-optic protection coverage
4 current transformers and 3-7 binary inputs/outputs
Supports fast and selective tripping even during communication failure
Phase comparison algorithm for fast and reliable protection
Communication redundancy via copper or optical fiber
Configurable for multiple fault scenarios (overcurrent, ground-fault, etc.)
Direct communication interface with the ability to send inter-tripping commands and binary signals
Programmable logic for advanced customization (CFC)
9 programmable function keys
Support for Ethernet redundancy protocols (RSTP, PRP, HSR)
Protection against external and internal faults
Communication via IEC 61850, MODBUS RTU, and other protocols
Built-in monitoring and diagnostic features (e.g., trip circuit supervision, fuse failure monitoring)
Up to 24 km of fiber-optic protection coverage
4 current transformers and 3-7 binary inputs/outputs
Supports fast and selective tripping even during communication failure
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