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SIEMENS SIPROTEC 7SL87 LINE DIFFERENTIAL AND DISTANCE PROTECTION NUMERICAL RELAY

SIEMENS SIPROTEC 7SL87 LINE DIFFERENTIAL AND DISTANCE PROTECTION NUMERICAL RELAY
SIEMENS SIPROTEC 7SL87 LINE DIFFERENTIAL AND DISTANCE PROTECTION NUMERICAL RELAY
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Product Code : 7SL87
Brand Name : Siemens
Product Description

SIEMENS SIPROTEC 7SL87 Line differential and distance protectionnumerical relay

The combined line differential anddistance protection SIPROTEC 7SL87 is part of the new SIPROTEC 5 series ofmodular, flexible and intelligent digital field devices. With its modularityand flexibility and its high-performance DIGSI 5 engineering tool, the SIPROTEC7SL87 fits perfectly for protection, control, monitoring, and measuringapplications in electrical energy systems. Main function: Differential andDistance ProtectionTripping:1- and 3-pole, min. tripping time 9 ms/p>Inputsand outputs:-12 predefined standard variants with 4/4 or 8/8 current/voltagetransformers, 5 to 31 binary inputs, 8 to 46 binary outputs Hardwareflexibility: Flexibly adjustable I/O quantity structure within the scope of theSIPROTEC 5 modular system. Width of housing:1/3 x 19'' to 2/1 x 19''

All functions can be configured freely with DIGSI 5. For theapplication of some of the functions, you require the appropriate number offree function points within the device. The function point calculator in theonline configurator provides support in determining the required number offunction points for your device.

  • Minimum tripping time: 9 ms
  • Main protection function is differential protection with adaptive algorithm for maximum sensitivity and stability even with the most different transformer errors, current-transformer saturation and capacitive charging currents
  • 1-/3-pole automatic reclosing function
  • Several distance-protection functions selectable as backup protection or secondary main protection: Classic, reactance method (RMD), impedance protection for transformers
  • Directional backup protection and various additional functions
  • Adaptive power-swing blocking, out-of-step protection
  • Detection of ground faults of any type in isolated or arc-suppression-coil-ground systems using the following functions: 3I0>, V0>, fleeting contact, Cos-/SinPhi, harmonic, dir. detection of intermittent ground faults and admittance
  • Ground fault detection using the pulse location method
  • Detection of current-transformer saturation for fast tripping with high accuracy Arc protection
  • Automatic frequency relief for load shedding in case of underfrequency, taking account of changed infeed conditions due to decentralized power generation
  • Reactive power-undervoltage protection (QU protection)
  • Detection of current and voltage signals up to the 50th harmonic with high accuracy for selected protection functions (such as thermal overload protection) and operational measured values
  • Control, synchrocheck and switchgear interlocking 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 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 (SDH 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 with NERC CIP and BDWE Whitepaper requirements
  • 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 easy tests and commissioning
  • Flexibly adjustable I/O quantity structure within the scope of the SIPROTEC 5 modular system

 


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RELISERV SOLUTION
Office No.-9, Plot 53/54, Sector-34, Space Heights, Near Tawa Hotel, Kamothe, Navi Mumbai - 410209, Maharashtra, India
Mr Piyush Lalchand Rathi (Partner)
Mobile :+919819614841, +919769207841
Mr. Dnyanesh Gawande (Partner)
Mobile :+919833686249