EEVblog Electronics Community Forum
Products => Test Equipment => Topic started by: Dip_Switch on February 13, 2020, 08:59:22 pm
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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.
(https://www.eevblog.com/forum/testgear/current-clamp-etcr008-range-ac-0-0ma-30a-10hz-100khz-frequency-response/?action=dlattach;attach=927814)
(https://www.eevblog.com/forum/testgear/current-clamp-etcr008-range-ac-0-0ma-30a-10hz-100khz-frequency-response/?action=dlattach;attach=927806)
(https://www.eevblog.com/forum/testgear/current-clamp-etcr008-range-ac-0-0ma-30a-10hz-100khz-frequency-response/?action=dlattach;attach=927810)
(https://www.eevblog.com/forum/testgear/current-clamp-etcr008-range-ac-0-0ma-30a-10hz-100khz-frequency-response/?action=dlattach;attach=927818)
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 (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