voltage and current meter design -- help!

Nov 23, 2005 3 Replies

Rate this thread:

DigitalSignal 20 years ago

Hi!

We need help for design the analog front-end for a voltage and current measurement. If you are interested in this contract job please contact me at: DigitalSignal999[at]yahoo.com

For voltage, the device will have 4 channels: 4 (A, B, C, N) Connector type Safety Banana Max. input voltage 1000 Vrms Max peak voltage 6 kV Ground connection Safety Banana

For Current input: Number of inputs 4 (A, B, C, N)

Accuracy is about 0.2%. Bandwidth is 20kHz. All channels will be simultaneously sampled with A/D converters.

Vote

Winfield Hill 20 years ago

Measuring ac voltages to 1500V at 20kHz is easy, and not too hard even with 0.2% accuracy (assuming % of FS). But, when you talk about 1500V peak and current in the same breath, one has to wonder exactly what you mean. The current on what wires, at what potential? How much current, and at what allowed voltage burden? Do you have in mind using current transformers? If so, how low in frequency?

Thanks, - Win

Vote

John Fields 20 years ago

I emailed them about five weeks ago and they\'re basically looking for a carbon copy of the front end of a Fluke 430 series 3-phase "Power Quality" meter. http://us.fluke.com/usen/products/Fluke+430+Series.htm?catalog_name=FlukeUnitedStates

Vote

DigitalSignal 20 years ago

John is right. We are looking for something like Fluke 430 just for the front-end part.

Vote

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required