Sel 487e Relay Manual

The SEL-751 Feeder Protection Relay provides a comprehensive combination of protection, fault-locating features, monitoring, control, and communication in an industrial package. Standard Protection Features. Protect lines and equipment with an extensive range of protection elements. Consult Schweitzer Engineering Laboratories's entire SEL-487E-3, -4 Transformer Differential Relay catalogue on DirectIndustry.

The IEC 61850 OPC Server from MatrikonOPC provides connectivity to any IEC 61850 compliant RTU, IED (Intelligent Electronic Device), PLC, meter, transducer, relay, etc. This OPC Server enables you to monitor and control Electrical Substations and Wind Turbines located far in the fields securely and reliably. It connects to multiple devices at the same time, where the read and write operations with these devices are optimized to deliver the necessary data in time for the protective relaying. The OPC Server for IEC 61850 supports: • The ability to control remote device operations by performing Structured Writes to Control Blocks. New!• Enables OPC Clients that don't support structured writes to perform structured write operations by automatically building the Custom Structure. New!• IEC 61850 7-2 (ACSI), 7-3, 7-4, and 8-1(SCSM).

• Authorizing access to password protected devices. • All IEC-61850 logical device, logical nodes, and Data attributes. Principles and practice using c pdf torrent.

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• Monitoring the bytes received and transmitted between devices and the OPC server as OPC A&E simple events data • Device Report Control Block (RCB) Timestamp • Client-Server Architecture using MMS over TCP/IP • Supports unsolicited report-by-exception messaging using IEC61850 buffered and un-buffered reports • Supports offline configuration (SCL files, IEC61850 parts 6-1) • Supports browsing of entire PLC data address space • Easily configured by importing SCL Schema file into the server in two steps. • XML technology for saving configuration files. • Interoperable with HMI and Historians systems such as Citect, OSIsoft PI and any OPC client application. • Multiple communication channels at the same time for IEC 61850 Ethernet access (TCP/IP). • Channel redundancy with multiple devices. If security and reliability are important factors for your engineering systems, OPC Server for IEC 61850 offers you a secure and reliable connection to a wide range of automation systems.

Do you have IEC 61400-25 Wind Turbines?

SEL-487E-3, -4 Transformer Differential Relay Three-Phase Transformer Protection, Automation, and Control System Major Features and Benefits The SEL-487E Transformer Differential Relay provides three-phase differential protection for transformer applications with as many as five three-phase restraint current inputs. Use the three independent restricted earth fault (REF) elements for sensitive ground-fault detection in grounded wye-transformer applications. Detect turn-to-turn winding faults for as little as two percent of the total transformer winding with the negative-sequence differential element. Apply the two three-phase voltage inputs for over- and undervoltage, frequency, and volts/hertz protection.

Make any overcurrent element directional using voltage polarized directional elements as torque control inputs to the overcurrent elements. Monitor and protect critical substation assets with comprehensive breaker wear and transformer thermal and through-fault monitoring. Perform bay control functions for as many as five breakers and 20 disconnect switches using the built-in system mimic diagrams. Schweitzer Engineering Laboratories, Inc. High-Speed Differential Protection. A two-stage slope adapts automatically to external fault conditions, providing fast, sensitive, dependable, and secure differential protection, even for CT saturation and heavily distorted waveforms. Multiple Synchrophasor Data Channels.

System-wide monitoring is available through as many as 24 synchrophasor data channels. Record and store up to 120 seconds of IEEE C37.118 binary synchrophasor data. Restricted Earth Fault Protection. Three independent REF elements provide sensitive protection for faults close to the winding neutral in grounded wye-connected. ► Time-Domain Link (TiDL) Technology.

The relay supports remote data acquisition through use of the SEL-2240 Axion®. The Axion provides remote analog and digital data over an IEC 61158 EtherCAT® TiDL network. This technology provides very low and deterministic latency over a fiber point-to-point architecture. The SEL-487E-3, -4 relay can receive fiber links from as many as eight Axion remote data acquisition nodes. Functional Overview 1 Copper or Fiber Optic * Optional Feature Figure 1 Functional Diagram Schweitzer Engineering Laboratories, Inc. High Voltage Transformer Differential Zone Tertiary Voltage Two-Winding Transformer Application Use the negative-sequence differential element for sensitive detection of interturn faults within the transformer winding.