SIPROTEC 7SL82 - 4xI 4xV, 3-pole tripping

SIPROTEC 7SL82 - Line Differential and Distance Protection

4xI 4xV, 3-pole tripping

The combined line differential and distance protection relay SIPROTEC 7SL82 is part of the SIPROTEC 5 series modular field devices. This device is especially designed for cost effective and compact medium voltage and sub-transmission application areas. With its flexibility and its high-performance DIGSI 5 engineering tool, the SIPROTEC 7SL82 fits perfectly for protection, control, monitoring, and measuring applications in electrical energy systems.

Main function

• Differential and Distance Protection for medium- and subtransmission
• Interoperability of SIPROTEC 5 and SIPROTEC 4 line protection devices

Tripping

• 3-pole, min. tripping time 19 ms

Inputs and outputs

• 4 current transformers
• 4 voltage transformers (optional)
• 11 or 23 binary inputs
• 9 or 16 binary outputs

Hardware flexibility

• Various hardware quantity structures are available for binary inputs and outputs in the 1/3 base module, it is not possible to add 1/6 expansion modules, available with large and small display

Housing width

• 1/3 × 19 inches

As standard:

• Conformal coating

Product homepage - downloads from the internet (catalogs, certificates, firmware, manuals,...)

siemens.com/7SL82

• Compact and cost effective line differential and distance protection device
• High-performance protection features guarantee safety
• Data security and transparency throughout the entire life cycle of the system save time and reduce costs
• Clear and easy-to-use devices and software thanks to user-friendly design
• Increased quality and reliability of the engineering process
• High degree of overall safety and security based on thorough implementation
• High-performance communications components guarantee safe and effective solutions
• Full compatibility with IEC 61850 Edition 1 and 2
• Future proof system solutions provide high investment security and low operation costs

• Line protection for all voltage levels with 3-pole tripping
• Phase-selective protection of overhead lines and cables with single-ended and multi-ended infeed of all lengths with up to 6 line ends
• Transformers and compensating coils in the protection zone
• Detection of ground faults in isolated or arc-suppression-coil-ground power systems in star, ring, or meshed arrangement
• 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)

DIGSI 5 permits all functions to be configured and combined as required.

• Minimal tripping time 19 ms
• Main protection function is differential protection with adaptive algorithm for maximum sensitivity and stability even at different CT errors, CT saturation and capacitive charging currents
• Diverse distance protection methods as backup or main 2 protection available: Classic, reactance method (RMD), impedance protection for transformers
• Directional backup protection and various additional functions
• Detection of ground faults of any type in compensated or isolated electrical power systems using the following functions: 3I0>, V0>, transient ground fault, cos φ, sin φ, harmonic, dir. Detection of intermittent ground faults and admittance
• Recognition of static, intermittent and transient ground faults (transient function) in resonant-grounded and isolated networks
• Adaptive power swing blocking
• Arc protection
• Undervoltage-controlled reactive power protection
• Control, synchro-check and system interlocking
• Powerful automation with graphical CFC (Continuous Function Chart)
• Support of single line in small and large displays
• Integrated electrical Ethernet port J for DIGSI and complete IEC 61850 functionality (reporting and GOOSE)
• Two optional pluggable communication modules usable for different and redundant protocols (IEC 61850-8-1, IEC 60870-5-103, IEC 60870-5-104, Modbus TCP, DNP3 serial and TCP, PROFINET IO)
• Serial protection data communication over fiber-optic cable, two-wire connections and communication networks (IEEE C37.94 et al.) including automatic switch over between ring and chain topology
• High available Ethernet redundancy protocols PRP and HSR
• Cyber Security acc. NERC CIP and BDEW Whitepaper
• Phasor Measurement Unit (PMU) for synchrophasor measured values and IEEE C37.118 protocol
• Time synchronization IEEE 1588
• Powerful fault recording
• Additional functions for simple tests and easy commissioning