Circuit-breaker management device

SIPROTEC 7VK87
Modular SIPROTEC 7VK87 circuit breaker management device for reliable circuit-breaker management.
Features
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:
Functions
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
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)
- Acquisition and recording of power quality data in the medium voltage and subordinate low voltage network
Benefits
- 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