TRA812 – single-phase current transformer – measurement


  • Current transformer for primary rated currents from 50 A to 1500 A
  • Secondary rated current 1…5 A
  • Suitable for 50 Hz, optionally also for 400 Hz with burden on request
  • Accuracy classes 0.5, 1 and 3 available
  • Burden from 4 VA to 15 VA
  • Safety factor FS ≤ 15
  • Thermal continuous current up to max. 90 kA / 1 s
  • Maximum power loss ≤ 15 W at Icth
Datasheet

Technical specifications

Primary rated current Ipr 50…1500 A
Rated frequency 50 Hz
Operating frequency 47…63 Hz
Option Rated frequency 400 Hz, burden on request
Rated continuous thermal current Icth According to EN/IEC 61869
Thermal continuous current Ith < 60 In, max. 90 kA / 1 s
Dynamic rated current Idyn 2.5 Ith
Safety factor (FS) ≤ 15
Secondary rated current Isr 1…5 A
Burden 4…15 VA, see table
Accuracy class Class 0.5 / 1 / 3, see table
Maximum power loss ≤ 15 W at Icth
Note on thermal dimensioning For thermal dimensioning of the control cabinet
Note on secondary winding With open secondary winding, an operating time of 1 minute is guaranteed.
Operating note Current transformers must not be operated with an open secondary winding in order to avoid potentially dangerous overvoltages and overheating.






Technical advice: 03303 / 50 40 66

Technical advice for this product


    In accordance with the General Data Protection Regulation (GDPR), we are obliged to inform you about the collection of data. We meet this obligation by referring to our privacy notice.



    TRA812 – single-phase current transformer – measurement

    • Current transformer for primary rated currents from 50 A to 1500 A
    • Secondary rated current 1…5 A
    • Suitable for 50 Hz, optionally also for 400 Hz with burden on request
    • Accuracy classes 0.5, 1 and 3 available
    • Burden from 4 VA to 15 VA
    • Safety factor FS ≤ 15
    • Thermal continuous current up to max. 90 kA / 1 s
    • Maximum power loss ≤ 15 W at Icth
    Datasheet

    Technical specifications

    Primary rated current Ipr 50…1500 A
    Rated frequency 50 Hz
    Operating frequency 47…63 Hz
    Option Rated frequency 400 Hz, burden on request
    Rated continuous thermal current Icth According to EN/IEC 61869
    Thermal continuous current Ith < 60 In, max. 90 kA / 1 s
    Dynamic rated current Idyn 2.5 Ith
    Safety factor (FS) ≤ 15
    Secondary rated current Isr 1…5 A
    Burden 4…15 VA, see table
    Accuracy class Class 0.5 / 1 / 3, see table
    Maximum power loss ≤ 15 W at Icth
    Note on thermal dimensioning For thermal dimensioning of the control cabinet
    Note on secondary winding With open secondary winding, an operating time of 1 minute is guaranteed.
    Operating note Current transformers must not be operated with an open secondary winding in order to avoid potentially dangerous overvoltages and overheating.






    Technical advice: 03303 / 50 40 66

    Technical advice for this product


      In accordance with the General Data Protection Regulation (GDPR), we are obliged to inform you about the collection of data. We meet this obligation by referring to our privacy notice.



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