current clamp ETCR008 Range AC 0.0mA ～ 30A 10Hz ～ 100kHz frequency response

[Dip_Switch]

Hi eevblog.

Last year I discovered an unknown chinese current clamp ETCR008.
Range AC 0.0mA ～ 30A
Resolution AC 0.01mA
Frequency characteristics: 10Hz ～ 100kHz



I liked the  frequency characteristics: 10Hz ～ 100kHz from the data sheet so
I ordered one and made an impedance/phase  plot from 10Hz-200khz using my 14bit swiss army knife  analog discovery 1.
The first resonance frequency  appears around  4.8Khz which is a bit  too low for me for oscilloscope usage.






 



ETCR008
Range AC 0.0mA ～ 30A
Resolution AC 0.01mA
Accuracy class 0.5% FS (50Hz / 60Hz; 23 ℃ ± 2 ℃)
Turn ratio 2500: 1 (choose 2000: 1; 1000: 1)
Line voltage AC 600V line test
Current frequency 45Hz ～ 60Hz (measured current frequency)
Frequency characteristics: 10Hz ～ 100kHz
Insulation strength AC3700V / rms (between core and case)
Phase error ≤2 ° (50Hz / 60Hz; 23 ℃ ± 2 ℃)
Reference load
RL: 0 ～ 300mA≤500Ω; 0 ～ 3A≤50Ω; 0 ～ 30A≤5Ω
https://item.taobao.com/item.htm?id=580782994199


So maybe save your money if you intend to use it on higher frequencies.
My first post here? Could be.

Greetings.
Dip_Switch