LV Instrument Transformers

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Plastic Case CT / Busbar CT

  • Rated Primary Current (A) : 50A to 1250A

  • Rated Burden (VA) : 1.5,2.5, 5, 7.5, 10, 15, 30

  • Rated Frequency :50-60 Hz

  • Accuracy Class : 0.2s, 0.2, 0.5s, 0.5 , 1.0, 3.0 & 5.0 (Based on required measurement precision)

  • Applicable Standards : IEC -61869-1&2 / IS 16227 part 1&2 / IS 2705

  • Types of Plastic Case CT Models: : ECT 75 20 (45)/ECT 75 40 (45)/ECT 85 60 (40)/ECT 85 50 (40)

Key Features Across All Products

  • Wide range of system current rating , bus bar sizes,case widths and apertues
  • Various mounting options like wall mounting, cable mounting, bus bar mounting,etc.
  • Wire sealable terminal covers
  • Hinged terminal covers
  • Terminal with M5 screw,with dual connection facility, giving access from both sides of transformers
  • Second pair of terminal can be used for shorting of CT before disconnection

Brief Specifications

Applicable Standard IEC -61869-1&2 / IS 16227 Part 1&2 / IS 2705
Case Polycarbonate, flame reatardant grades classified UL 94V-0
Connection Two connections on each side with M5 screws
Insulation Class E
System Voltage 720 V maximum
Test Voltage 3KV 50 Hz for 1 min
Operating Frequency 50 Hz / 60 Hz
Primary Rating 50 A to 5000A
Rated Secondary Output 5A / 1A
Rated Burden (VA) 1.5, 2.5, 3.75, 5.0 , 7.5, 10 , 15 , 30
Class of accuracy 0.2s, 0.2, 0.5s, 0.5 , 1.0, 3.0 & 5.0 (Based on required measurement precision)
Ambient temperature - 25° C TO + 40° C
Storage temperature - 50° C TO + 80° C
Thermal short circuit current (Ith) 60 x In/1 Sec (Max 100 kA/1 S)
Dynamic short circuit current (Idyn) 2.5 x Ith

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