SIPROTEC 7KE85 Fault Recorder

Description

The SIPROTEC 7KE85 is a powerful fault recorder featuring integrated measurement of synchrophasors (PMU) compliant with IEEE C37.118 and power-quality measurement according to IEC 61000-4-30. Its flexible trigger functions make it ideal for monitoring the entire energy value chain, from generation to distribution. High-performance automation and flexible configuration with DIGSI 5 enhance its functionality.

Main Function

Fault Recorder

Hardware and I/O Capabilities

Offers 4 predefined standard variants with up to 40 analog channels, 43 binary inputs, and 33 binary outputs. The I/O quantity structure is flexibly adjustable and expandable within the modular SIPROTEC 5 system.

Housing is available in 1/3 to 1/1 x 19" sizes.

Applications

The fault recorder is designed for use in medium-voltage, high-voltage, and very high-voltage systems, as well as power plants. It provides comprehensive trigger and recording functions for clear, event-related evaluation and documentation of power system processes. This enables targeted analysis of failures and optimization of power systems.

Typical Monitored Processes:

System incidents, such as critical load cases or short circuits
Failures of the supply quality
Dynamic behavior of generators
Closing and breaking operations of transformers (saturation response)
Power fluctuations and power-swing cycles
Test runs during commissioning

Device Representation:

The SIPROTEC 7KE85 device can be equipped with expansion modules to enhance its capabilities.

Key Functions

DIGSI 5 software allows for flexible configuration and combination of all functions:

Up to 40 analog channels
Fast-scan recorder
Up to 2 slow-scan recorders
Up to 5 continuous recorders and 2 trend recorders
Power Quality recordings in accordance with IEC 61000-4-30
Sequence-of-events recorder for continuous recording of binary status changes and IEC 61850 GOOSE messages
Phasor Measurement Unit (PMU) functionality in accordance with IEEE C37.118 protocol
Transmission of records and triggering via IEC 61850 GOOSE messages
Variable sampling frequencies parameterizable between 1 kHz and 16 kHz
16 GB mass storage, distributable among recorders as desired
Intelligent monitoring routines for storage medium availability and data completeness
Lossless data compression
Time synchronization via Precision Time Protocol (PTP) IEEE 1588, IRIG-B, DCF77, and SNTP
Routing of measured values to individual recorders
Combination of measuring groups for power calculation
Quality attributes for representing instantaneous signal quality in time-signal view
Web browser access for displaying information, diagnostic data, vector diagrams, and single-line/device pages
Trigger functions: fundamental component value, RMS value, zero-sequence system power, positive-sequence system power, negative-sequence system power, frequency power, active power, reactive power, and apparent power
Level trigger and gradient trigger for every trigger function
Flexible cross-triggering and system triggering, manual triggering
Trigger functions configurable via graphic automation editor CFC (Continuous Function Chart)
Triggering based on single-point indications, double-point indications, analog values, binary signals, Boolean signals, and GOOSE messages, including individual harmonics or THD
Up to 4 pluggable communication modules for various 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 partitioning (IEEE 802.1Q - VLAN)
Intelligent terminal technology for prewiring and easy device replacement

Cybersecurity and Connectivity

Extensive cybersecurity functionality: Role-Based Access Control (RBAC), security event logging, signed firmware, authenticated IEEE 802.1x network access.
Cybersecurity in accordance with NERC CIP and BDEW Whitepaper requirements.
Fixed integrated electrical Ethernet RJ45 interface for DIGSI 5 and IEC 61850 (reporting and GOOSE).
Data transmission via IEC 61850 of fault recordings in COMTRADE 2013, 1999 standard and continuous recording in IEEE Std 1159.3-2003.
Reliable data transmission via PRP and HSR redundancy protocols.

Benefits

Clearly organized documentation and focused analysis of power system processes and failures.
Purposeful and easy handling of devices and software due to user-friendly design.
Increased reliability and quality of the engineering process.
Consistent monitoring concept.
Full compatibility between IEC 61850 Editions 1, 2.0, and 2.1.
Auxiliary functions for simple tests and commissioning.
Special test mode for commissioning.
Siemens supports the interface in accordance with IEC 61850-9-2 for process-bus solutions.
Highest availability even under extreme environmental conditions due to standard coating of modules.

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