Siemens Siprotec 4 SIPROTEC 7SD5 Protection Relay
The Siemens SIPROTEC 7SD5 Protection Relay is a high-performance line differential and distance protection device designed for reliable use in industrial and utility networks. Supporting up to six line ends with flexible 1-/3-pole tripping, it ensures precise fault detection and rapid protection response. Available with both text and graphical displays, the 7SD5 offers easy local operation and configuration through DIGSI 4 software. Equipped with 4xI and 4xV inputs, it guarantees accurate measurement and dependable protection for critical systems
Technical Specifications
Monitoring Functions:
Self-supervision of relay and R2R communication
Trip circuit supervision (74TC)
Measured-value supervision
Oscillographic fault recording
Event/fault logging
Switching statistics
Front Design:
User-friendly operation interface
PC front port for DIGSI 4 configuration
Function keys and 14 LEDs for local alarm indication
Communication Interfaces:
2 serial R2R protection data interfaces (ring/chain topology)
Front PC interface
System interface for control system connection via:
IEC 61850 Ethernet
IEC 60870-5-103
PROFIBUS-FMS / DP
DNP 3.0
Rear-side service/modem interface
Time synchronization via IRIG-B, DCF77, or system interface
Self-supervision of relay and R2R communication
Trip circuit supervision (74TC)
Measured-value supervision
Oscillographic fault recording
Event/fault logging
Switching statistics
Front Design:
User-friendly operation interface
PC front port for DIGSI 4 configuration
Function keys and 14 LEDs for local alarm indication
Communication Interfaces:
2 serial R2R protection data interfaces (ring/chain topology)
Front PC interface
System interface for control system connection via:
IEC 61850 Ethernet
IEC 60870-5-103
PROFIBUS-FMS / DP
DNP 3.0
Rear-side service/modem interface
Time synchronization via IRIG-B, DCF77, or system interface
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