TPR_ Protection transformers

The TPR__ current transformer for protection instrumentation. It is a transformer for through primary, generally for cable, although it can also be manufactured for PCB (consult dimensions). It is encapsulated in resin. Transformers have different transformation ratios, for primary from 100A to 5000 A and secondary from 5 A. Precision classes can be 5P10 or 10P10 according to IEC 61869-2. Depending on the model and class, the power of the secondary load varies.

Connections

Dimensions

Model/ / Cable
TPR60 / Ø60
TPR80 / Ø80
TPR100 / Ø100
TPR125 / Ø125

Bus-bar
Usually for plates
Resin envelope
Greater robustness
Installation in adverse environment

Standards

  • IEC 60185
  • UNE EN 618691 (IEC 618691)
  • UNE EN 618692 (IEC 618692)
  • VDE 0414
  • IEC60801-3.4
  • DIN 57414
  • BS 3938
  • EN 50081
  • EN 50082
  • IEC61010
  • UL94-V0

General technical specifications.

  • Security factor: Fs < 5
  • Rated voltage (maximum): 720 V
  • Test voltage: 3 kV AC (1min)
  • Frequency: 50 – 60 hz
  • Rated short-time thermal current: Ith limited by cable sizes or primary bus-bar
  • Rated dynamic current: IDyn = 2,5 x Ith
  • Continuous overload: ID = 1,2 x In
  • Operating temperature: -10 … 50 ºC
  • Accuracy: 0,5; 1 and 3 (0,2s; 0,5s on request)
  • Rated secondary current: /5 or /1A
  • Insulation class: Class E // Class B (130 ºC) Available

Details of product relationship table:

 

 

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