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Home » Products » Siemens Reyrolle Numerical Relay » 7SR18 Solkor Protection Relay

7SR18 Solkor Protection Relay

7SR18 Solkor Protection Relay
7SR18 Solkor Protection Relay
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Product Code : RERL4
Price And Quantity
  • Minimum Order Quantity
  • 1 Piece Piece
Product Description

Our differential protection relay, Reyrolle7SR18, is a numeric three phase differential protection relay used to detect in zone phase and earth faults. This differential protection relay is applied to overhead line and underground cable circuits as well as shorter circuits such as interconnectors.

Reyrolle 7SR18 differential protection relays have integral back-up overcurrent/earth fault protection and intertripping channels.

Protection Relays (and associated CTs) are installed at each end of the protected circuit. The relays are connected together with a fully supervised fibre optic protection communications link.

Relays have four current inputs and are housed in E6 cases. Integrated logic is provided to allow the optimal configuration of relay protection functionality with the relay's analogue inputs and binary input/output circuits.

Protection and instrumentation functionality is accessible via the data comms channel - a front USB, RS485 and IEC 61850 (optional) rear ports.

Protection Functions

  • 3-phase, phase segregated current differential protection
  • Overcurrent
  • Earth Fault

Supervision Functions

  • Protection comms link supervision
  • Circuit Breaker Fail
  • CT Supervision
  • Trip Circuit Supervision

Control Functions

  • Intertripping

Monitoring functions

  • Primary/Secondary Current Phases and Earth
  • Historical Demand Record


  • CT ratio correction
  • Four Setting Groups
  • Password Protection
  • Self Monitoring
  • Circuit Breaker Trip Counter
  • Fault, event and waveform records
Trade Information
  • Payment Terms
  • Letter of Credit (L/C), Cheque, Cash in Advance (CID), Cash Advance (CA), Cash on Delivery (COD), Cash Against Delivery (CAD)
  • Main Domestic Market
  • All India


Office No.-9, Plot 53/54, Sector-34, Space Heights, Near Tawa Hotel, Kamothe, Navi Mumbai - 410209, Maharashtra, India
Phone :+918068092899
Mr Piyush Lalchand Rathi (Partner)
Mobile :918068092899
Mr. Dnyanesh Gawande (Partner)
Mobile :918068092899