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Energy Audit and Management of a College
Published in P. C. Thomas, Vishal John Mathai, Geevarghese Titus, Emerging Technologies for Sustainability, 2020
Libina Rose Sebastian, Athul Thomas, Ajay Sasi, Joffie Jacob, Fenny Varghese
Current clamp or current probe is an electrical device which uses jaws like opening to allow clamping around an electrical conductor. This allows measurement of the current in a conductor without the need to make physical contact with it and to disconnect it for insertion through the probe. Current clamps are typically used to read the magnitude of alternating current (AC) and with additional instrumentation. The phase and waveform can also be measured using this meter. Some clamps meters can measure currents of 1000 A and even more. Hall Effect and vane type clamps can also measure direct (DC).
Energy Conservation And Audits
Published in Eric A. Woodroof, Green Facilities Handbook, 2020
Equipment nameplate data are often obscured or missing. A quality multi-meter can used for basic voltage and current measurements. These electronic meters typically provide digital voltage-ohm-ampere readings. An AC current clamp is a type of ammeter that measures current without disconnecting the wire conductor. It can be a self-contained unit or a probe attachment for the multi-meter. For both tools, when measuring the value of alternating current signals, models providing true root mean square values (true RMS) help avoid errors due to distorted waveforms or harmonics.
Investigation of wireless sensor node power consumption profile powered by heterogeneous hybrid energy harvesters with EPDD management algorithm
Published in International Journal of Electronics, 2019
Ali M. Abdal-Kadhim, Kok S. Leong
The inductor current clamp method is a well-known current measurement technique, which clamps the power line wire with an inductor and samples the induced voltages to estimate the current. The main disadvantages of this technique include the periodic calibration after every single measurement and noise susceptibility.