Main function:

• Automatic reclosing function, synchrocheck, circuit-breaker failure protection
  

Tripping:

• 1-pole and 3-pole or 3-pole
  

Inputs and outputs:

12 predefined standard variants with 

• 4/4 or 8/8 current transformers / 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 × 19 inches to 2/1 × 19 inches
  

As standard:

• Conformal coating

DIGSI 5 permits all functions to be configured and combined as required.

• 1-pole automatic reclosing function with detection secondary arc
• Circuit-breaker failure protection for 1-pole and 3-pole tripping
• Point-on- wave switching
• Control, synchrocheck and switchgear interlocking protection
• Voltage controller for transformers
  
• Arc protection
• Voltage protection
• Graphical logic editor to create powerful automation functions in the device
• Single-line representation in small or large display
• Integrated electrical Ethernet RJ45 for DIGSI 5 and IEC 61850 (reporting and GOOSE)
• Up to 4 pluggable communication modules, usable for different and redundant protocols (IEC 61850-8-1, IEC 61850-9-2 Client, IEC 60870-5-103, IEC 60870-5-104, Modbus TCP, DNP3 serial and TCP, PROFINET IO, PROFINET IO S2 redundancy)
• Virtual network sharing (IEEE 802.1Q - VLAN)
  

• PQ-Basic: voltage unbalance; voltage changes: overvoltage, dip, interruption; TDD, THD and Harmonics

• Serial protection data communication via optical fibers, two-wire connections and communication networks (SDH networks, MPLS electrical power systems, for example using IEEE C37.94, and others), including automatic switchover between ring and chain topology.
• Reliable data transmission via PRP and HSR redundancy protocols
• Extensive cybersecurity functionality, such as role-based access control (RBAC), protocolling security-related events, signed firmware or authenticated network access IEEE 802.1X
• Simple, quick and secure access to the device via a standard Web browser to display all information and diagnostic data, as well as vector diagrams, single-line and device display pages
  
• Phasor measurement unit (PMU) for synchrophasor measured values and IEEE C37.118 protocol
• Time synchronization using IEEE 1588
• Powerful fault recording (buffer for a max. record time of 80 sec. at 8 kHz or 320 sec. at 2 kHz)
• Auxiliary functions for simple tests and commissioning
• Flexibly adjustable I/O quantity structure within the scope of the SIPROTEC 5 modular system
  

• Automatic reclosing after 1/3-pole tripping
• Synchrocheck before reclosing
• Circuit-Breaker Failure Protection
• Also used in switchgear with breaker-and-a-half layout
• Backup overcurrent and voltage protection
• Serial protection communication with SIPROTEC 5 and SIPROTEC 4 devices over different distances and physical media, such as optical fiber, two-wire connections, and communication networks 
• Phasor Measurement Unit (PMU)
• Acquisition and recording of power quality data in the medium voltage and subordinate low voltage network

• Safe and reliable automation and control of your systems
• Purposeful and easy handling of devices and software thanks to a user-friendly design
• Cybersecurity in accordance with NERC CIP and BDEW Whitepaper requirements
• Highest availability even under extreme environmental conditions  by “conformal coating“ of electronic boards