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Numerical Directional Protection Relay

Numerical Directional Protection Relay

Product Category :    Protection Relays

Supplier                :    Ashida Electronics Pvt Ltd.

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Product Profile of Numerical Directional Protection Relay

Numerical Directional Protection Relay comes with in-built CB Trip Circuit Supervision function during pre closing and post closing of CB. The Directional Protection Relay ensures protection against negative phase sequence element. Ashida Eletronics Pvt. Ltd., an ISO 9001:2008 certified company manufactures Numerical Directional Protection Relay.

Ashida Eletronics Pvt. Ltd. Offers a wide range of electrical power protection relays, auxiliary protection relay and SCADA systems. The Numerical Directional Protection Relay provides Instantaneous Over-Current Protection with adjustable timer and has facility of Breaker Failure detection.

Salient features of the Numerical Directional Protection Relay:

  • 4 Element [3 Phase + EF +sensitive EF] Directional / Non Directional Over current IDMT/DMT.
  • Selection of Curve: Five selectable curve, Normal Inverse, Very inverse, Extremely inverse,
  • Long time inverse and Define Time
  • In-built CB Trip Circuit Supervision function during pre closing and post closing of CB.
  • In built Auto Reclose Relay [ARR].
  • On site CT Secondary selection 1A or 5A.
  • In built VT supervision features and under/over voltage Alarm.
  • Internal reconstruction phase-phase voltage and open delta voltage required for direction detection
  • Internal calculation of zero seq. EF current and Zero sequence voltage for directional detection for Earth fault
  • Large 20X4 LCD display for Parameter and setting display
  • Online display of CB status and other digital and logical status.
  • Continuous monitoring of module`s internal hardware and alarm generation in case of failure of any critical components.
  • 6 Digital Output contacts for local alarm as well as tele-signalling
  • 2 Setting Groups.
  • CB CLOSE/TRIP from Relay keyboard
  • 8 Optically isolated digital status input for monitoring of status and avoid used of external relay logic
  • 2 dedicated status input for Trip Circuit Monitoring
  • 10 nos of Fault data stored with keypad interface and time stamping.
  • Display of Voltage, current, PF, Active, Reactive Power in terms of primary value.
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