Siemens Siprotec 5 7VK87 Circuit Breaker Management Device

The SIPROTEC 7VK87 Circuit Breaker Management Device is part of the new SIPROTEC 5 Protection Relay Series, which offers modular, flexible, and intelligent digital field devices. Moreover, its advanced design supports modern substation automation requirements. Additionally, with its modularity and flexibility, the device adapts easily to various applications in electrical energy systems.

Furthermore, when combined with the high-performance DIGSI 5 Engineering Tool, the SIPROTEC 7VK87 becomes highly efficient for protection, control, monitoring, and measuring tasks. As a result, utilities and industries can improve system reliability and operational performance.

Main Functions

• Automatic reclosing

• Synchro check

• Circuit-breaker failure protection

• Tripping options for 1-pole, 3-pole, or 3-pole configurations

Inputs and Outputs

• 12 predefined standard variants with 4/4 or 8/8 current and voltage transformers

• 5 to 31 binary inputs

• 4 voltage transformers

• 8 to 46 binary outputs

Hardware Flexibility

In addition, the device offers a flexibly adjustable I/O quantity structure within the scope of the SIPROTEC 5 modular system. Therefore, users can customize the configuration according to project requirements. Moreover, the width of the housing ranges from 1/3 × 19” to 2/1 × 19”, providing installation flexibility.

Furthermore, all functions can be configured freely using DIGSI 5. However, for certain functions, the appropriate number of free function points within the device is required. Therefore, the function point calculator in the online configurator helps determine the required number of function points for the device. Consequently, engineers can design and configure the protection system more accurately and efficiently.

Functions

• 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
• Control, synchrocheck, and switchgear interlocking protection
• Voltage controller for transformers
• Arc protection
• Voltage protection
• A graphical logic editor to create powerful automation functions in the device
• Single line representation in a small or large display
• Integrated electrical Ethernet RJ45 for DIGSI 5 and IEC 61850 (reporting and GOOSE)
• Up to 4 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, PROFINET IO)
• Serial protection data communication via optical fibers, two-wire connections, and communication networks (SHD networks, MPLS networks, for example, using IEEE C37.94, and others), including automatic switchover between ring and chain topology
• Redundancy protocols PRP and HSR
• Cyber security to NERC CIP and BDWE Whitepaper requirements
• Phasor Measurement Unit (PMU) for synchrophasor measured values and IEEE C37.118 protocol
• Time synchronization 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 easy tests and commissioning
• Flexibly adjustable I/O quantity structure within the scope of the SIPROTEC 5 modular system

SIPROTEC 5 is part of the new generation of incomparable modular, flexible, and intelligent digital field devices. With modularly designed hardware and software and its high-performance DIGSI 5 engineering tool, the SIPROTEC 5 product family of field devices is perfect for protection, control, monitoring, and measuring applications in electrical energy systems. SIPROTEC 5 offers a wide product range with modular elements for every application and requirement.