TAU81P – Single-phase current transformer – protection


  • Current transformer for primary rated currents from 750 A to 4000 A
  • Secondary rated current selectable with 5 A or 1 A
  • Suitable for 50 Hz, optionally also for 400 Hz with defined burden
  • Versions with protection classes 5P, 5P10, 5P15 and 5P20 available
  • Burden depending on protection class from 1.5 VA to 100 VA
  • Rated short-time thermal current up to max. 90 kA
  • Self-powered version without auxiliary supply
  • Optional ATAP015 accessory for protection with open secondary winding
Datasheet
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Technical data

Primary rated current Ipr 750…4000 A
Rated frequency 50 Hz
Operating frequency 47…63 Hz
Option Rated frequency 400 Hz, burden to be defined
Rated continuous thermal current Icth 100 % Ipr
Rated short-time thermal current Ith < 60 Ipr, max. 90 kA
Dynamic rated current Idyn 2.5 Ith
Secondary rated current Isr 5 / 1 A
Burden 50…100 VA at class 5P / 15…35 VA at class 5P10 / 6…15 VA at class 5P15 / 1.5…4 VA at class 5P20
Accuracy Class 5P / 5P10 / 5P15 / 5P20
Maximum power loss ≤ 34 W
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.
Accessory ATAP015 (NT710) for automatic short-circuiting of the secondary winding when the limit value is exceeded
Auxiliary supply Not required, self-powered






TAU 81P - Schutzstromwandler
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.



    TAU81P – Single-phase current transformer – protection

    TAU 81P - Schutzstromwandler
    • Current transformer for primary rated currents from 750 A to 4000 A
    • Secondary rated current selectable with 5 A or 1 A
    • Suitable for 50 Hz, optionally also for 400 Hz with defined burden
    • Versions with protection classes 5P, 5P10, 5P15 and 5P20 available
    • Burden depending on protection class from 1.5 VA to 100 VA
    • Rated short-time thermal current up to max. 90 kA
    • Self-powered version without auxiliary supply
    • Optional ATAP015 accessory for protection with open secondary winding
    Datasheet
    Add to your Quote List

    Technical data

    Primary rated current Ipr 750…4000 A
    Rated frequency 50 Hz
    Operating frequency 47…63 Hz
    Option Rated frequency 400 Hz, burden to be defined
    Rated continuous thermal current Icth 100 % Ipr
    Rated short-time thermal current Ith < 60 Ipr, max. 90 kA
    Dynamic rated current Idyn 2.5 Ith
    Secondary rated current Isr 5 / 1 A
    Burden 50…100 VA at class 5P / 15…35 VA at class 5P10 / 6…15 VA at class 5P15 / 1.5…4 VA at class 5P20
    Accuracy Class 5P / 5P10 / 5P15 / 5P20
    Maximum power loss ≤ 34 W
    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.
    Accessory ATAP015 (NT710) for automatic short-circuiting of the secondary winding when the limit value is exceeded
    Auxiliary supply Not required, self-powered






    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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