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ReliServ Solution

The distance protection SIPROTEC 7SA86 is part of the new SIPROTEC 5 series of modular, flexible and intelligent digital field devices.

With its modularity and flexibility and its high-performance DIGSI 5 engineering tool, the SIPROTEC 7SA86 fits perfectly for protection, control, monitoring, and measuring applications in electrical energy systems.
Main function: Distance Protection for medium and sub-transmission
Tripping: 3-pole, min. tripping time 9 ms
Inputs and outputs: 2 predefined standard variations with 4/4 or 8/8 current/voltage transformers, 5 to 31 binary inputs, 8 to 46 binary outputs
Hardware flexibility: Flexibly adjustable I/O quantity structure within the scope of the SIPROTEC 5 modular system.
Width of housing: 1/3 x 19'' to 2/1 x 19''
All functions can be configured freely with DIGSI 5. For the application of some of the functions, you require the appropriate number of free function points within the device. The function point calculator in the online configurator provides support in determining the required number of function points for your device.
  • 6 independent measuring circuits (6 system distance protection)
  • Diverse distance protection methods available:
  • Classic, reactance method (RMD), impedance protection for transformers
  • Directional backup protection and various additional functions
  • Recognition of static, intermittent and transient ground faults (transient function) in resonant-grounded and isolated networks
  • Adaptive power swing blocking, Out-of-Step protection
  • Detection of CT saturation for fast tripping and high accuracy at the same time
  • Arc protection
  • Power protection, configurable as active or reactive power protection
  • Undervoltage-controlled reactive power protection
  • Control, synchro check, and system interlocking
  • Powerful automation with graphical CFC (Continuous Function Chart)
  • Support of single line in small and large displays
  • Up to four optional pluggable communication modules usable for different and redundant protocols (IEC 61850, IEC 60870-5-103, IEC 60870-5-104, Modbus TCP, DNP3 (serial and TCP)
  • Serial protection data communication over fiber-optic cable, two-wire connections and communication networks (IEEE C37.94 et al.) including automatic switch over between ring and chain topology
  • High available Ethernet redundancy protocols PRP and HSR
  • Cyber Security acc. NERC CIP and BDEW Whitepaper
  • Phasor Measurement Unit (PMU) for synchrophasor-measured values and IEEE C37.118 protocol
  • Time synchronization IEEE 1588
  • Powerful fault recording
  • Auxiliary functions for simple tests and commissioning
  • Adjustable I/O quantity within the scope of the SIPROTEC 5 modular system

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