Circuit-breaker management device
SIPROTEC 7VK87
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 system solutions with high investment security and low operating costs.
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.
- Automatic reclosing function and synchrocheck for line protection applications with 1-pole and 3-pole tripping
- 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 61850-9-2 Merging Unit, IEC 60870-5-103, IEC 60870-5-104, Modbus TCP, DNP3 serial and TCP, PROFINET IO)
- 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 cyber security functionality, such as role-based access control (RBAC), protocolling security-related events or signed firmware
- Simple, quick and secure access to device data via a standard Web browser – without additional software
- 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)
Benefits
- Safe and reliable automation and control of your systems
- Purposeful and easy handling of devices and software thanks to a user-friendly design
- Cyber security in accordance with NERC CIP and BDEW Whitepaper requirements
- Highest availability even under extreme environmental conditions by “conformal coating“ of electronic boards
- Powerful communication components warrant safe and effective solutions
- High investment security and low operating costs due to future-oriented system solutions
