High Frequency Current Transformers

Offering current transformers for high frequency applications, used to detect high frequency currents to protect electronic switches against overcurrents.

Red high frequency current transformers

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Sirio's High Frequency Current Transformers

Current transformers for high frequency applications are used to detect high frequency currents, in order to protect an electronic switch against overcurrents in switching converters. They are typically connected at the primary side of medium-high power high frequency transformers, but they are also suitable for currents measurement, in applications which do not require high accuracy, but prompt response of the measurement equipment instead.

They are developed to detect alternate currents in the frequency range of some kHz. By connecting a burden resistance to the secondary side, you can read a proportional voltage signal, isolated from the mains. Depending on the application, other types of signal processing are available to use either by using digital or analogue techniques.

 

Part Number        Ip (Arms)     n           Ls (mH)     fmax (kHz)   Vt (μVs)    Drawing    D (mm)   Uis (Vrms)    Up (Vrms) 
TA 150511 20 (1):50 1.9 1000 180 1508FA 5 1000 4500
TA 150512 20 (1):100 7.5 400 400 1508FA 5 1000 4500
TA 150513 20 (1):200 30 100 850 1508FA 5 1000 4500
TA 150521 20 (1):50 4.5 500 160 1508FA 5 1000 4500
TA 150522 20 (1):100 19 200 360 1508FA 5 1000 4500
TA 150523 20 (1):200 76 50 750 1508FA 5 1000 4500
TA 150524 20 (1):500 475 10 1800 1508FA 5 1000 4500
TA 150320 25 (1):200 100 80 500 150320 6 750 3500
TA 150563 25 (1):1000 5000 10 2500 1508FB 6 750 4000
TA 150621 20 1:100 10 100 550 15062X 1.2 440 4000
TA 150622 20 1:200 40 50 1100 15062X 1.2 440 4000
TA 150625 20 1:1000 1000 10 6000 15062X 1.2 440 4000
TA 150641 50 1:100 10 100 850 15064X 2.3 480 4680
TA 150642 50 1:200 40 50 1900 15064X 2.3 480 4680
TA 150645 50 1:1000 1000 10 9000 1506X 2.3 480 4680
TA 152009 100 (1):100 31 60 2250 152A 13 1000 4000
TA 152059 100 (1):200 124 25 4500 152B 13 1000 4000
TA 153201 70 (1):50 11.5 500 650 153A 9 1000 4500
TA 153202 70 (1):100 45 200 1300 153A 9 1000 4500
TA 153203 70 (1):200 180 50 2700 153A 9 1000 4500
TA 153206 70 (1):50 11.5 500 650 153B 9 1000 4500
TA 153207 70 (1):100 45 200 1300 153B 9 1000 4500
TA 153208 70 (1):200 180 50 2700 153B 9 1000 4500
TA 150671 70 1:100 31 100 1400 15067X 3.5 600 5000
TA 150672 70 1:200 124 50 2800 15067X 3.5 600 5000