Description The SIPROTEC 7VK87 circuit breaker management device has specifically been designed for circuit-breaker management. With its modular structure, flexibility and the powerful DIGSI 5 engineering tool, the SIPROTEC 7VK87 device offers future-oriented solutions for protection, control, automation, monitoring, and Power Quality - Basic. Main function Automatic reclosing, synchrocheck, circuit breaker failure protection Tripping 1-pole and 3-pole or 3-pole Inputs and out- 12 predefined standard variants with 4/4 puts or 8/8 current/voltage transformers, 5 to 31 binary inputs, 8 to 46 binary outputs Hardware flexibi- Flexibly adjustable I/O quantity structure lity within the scope of the SIPROTEC 5 modular system DIGSI 5 permits all functions to be configured and com bined as required. Housing width 1/3 x 19 inch to 2/1 x 19 inch Applications • 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) • Detection and recording of power-quality data in the medium-voltage and subordinate low-voltage power system Functions

• 1 -pole automatic reclosing function secondary arc de Siemens Sans Bold 9pt Siemens Sans Roman 9pt 75 Lorem ipsum dolor Consecte tuer Adipiscing 10256 Dolor sit amet sit amet 75 Lorem ipsum dolor Consecte tuer Adipiscing 10256 tection (SAD) • 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 • Fault locator plus for accurate fault location with in-homogenous line sections and targeted automatic overhead-line section reclosing (AREC) • Arc protection...

• IEC 60870-5-104, Modbus TCP, DNP3 serial and TCP, PROFINET IO, PROFINET IO S2 redundancy) • Virtual network partitioning (IEEE 802.1Q - VLAN) • Serial protection communication via optical fibers, two-wire connections, and communication networks (IEEE C37.94 and others), including automatic switchover between ring and chain topology. • PQ - Basic: Voltage unbalance; voltage changes: overvoltage, dip, interruption; TDD, THD, and harmonics • Reliable data transmission via PRP and HSR redundancy protocols • Extensive cybersecurity functionality, such as role-based access control (RBAC), logging...