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Percentage Biased Differential Relay Trainer (Model: XPO-PRT/DIFF)

The Percentage Biased Differential Relay Trainer (Model: XPO-PRT/DIFF) is a sophisticated educational tool designed for the study of differential protection in transformers using differential relays and the characterization of various relays. Each trainer comes equipped with a built-in relay testing kit featuring essential components such as a voltage injector, current injector, elapsed time counter with 1-millisecond resolution, trip relay logic, and more, eliminating the need for a separate testing kit. For comprehensive experimentation, the trainer includes a set of 7-8 associated relay testing panels mounted in a lightweight and sturdy aluminum profile flat demo panel system.

SALIENT FEATURES

  • Facilitates differential protection of transformer or using differential relay & characterization of different relay.
  • Each of above trainer has built in requisite relay testing kit typically consisting of voltage injector, current injector, elapsed time counter (1 msec resolution), trip relay logic etc.
  • The Trainer need a few set of associated relay testing (current/voltage injection etc.) panels (7-8 nos. typically) which are mounted in a light weight sturdy aluminum profile flat demo panel system. Do not need any separate testing kit.
  • Facilitates easy and safe wiring by students due to use of 4mm sturdy Shrouded banana patch cords and shrouded socket arrange-ments for high voltage circuits.
  • Each panel has ABS molded plastic sturdy enclosure, and colorful screwless overlays showing circuits diagrams & its connection tag numbers for easy understanding and connection.
  • Useful for Post Graduate projects and research purpose.
  • Set of Instructor Guide & Student Workbook.

Technical Specifications

Input 3 phase DOLStarter panel (EMT1)

  • 4 pole MCB of 415 V/2A.
  • DOL9AContactor with 230V / 50 Hz / 11VACoil .
  • Bimetallic thermal O/Lrelay with range 1.4A- 2.3A
  • R-Y-B Input Indicators.
  • Green SBS5 socket is provided for extend earth.

1 phaseAC Input supply panel ( EMT16A)

  • 1ph. MCBs of 4A/1.6A – 2nos.
  • Bulb Load.

3 Phase Bidirectional Power cum Energy meter panel (EMT 34) x 2 Nos.

  • Bidirectional Multifunction
  • 3 phase 3/4 wire, 415VAC, CTInput 5A
  • LCD/LED display, Aux. supply 230V, 45-65Hz,5W
  • V,I, Hz, Pf, KVA, KW, KWH
  • Modbus RTU RS 485 (optional)
  • Green SBS5 socket is provided for extend earth.

Differential Relay Panel (EMT44/47)

  • All connection of relay are brough out on this panel
  • 2 NO Trip contacts
  • Aux. Supply 110VDC/230VAC

CT panel (EMT48)

  • Consist of 5/5 Amp. CT6 Nos.
  • Primary side of CTs are brought on 3 x 2 x 2 SBS-5 sockets.
  • Secondary side of CTs are Star connectd in group of 3 & brought out on 4 x 2 SBS-5 sockets.

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