The 3 Most Popular Prova Clamp Meters

Electrical meters with integral AC current clamps are called clamp-on ammeters, tong testers or clamp meters. Their function is to measure the vector sum of the currents which are flowing in all the conductors passing through the probe and this depends on the phase relationship of the currents. Normally, only one conductor is passed through the probe. The same current flows down one conductor and up the other in case the clamp is closed around a two conductor cable carrying power to the equipment.

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Since equipment electrical cables have both of the insulated conductors bonded together, clamp meters are usually used with a short extension cord with the two conductors separated so that the clamp can be placed around only one conductor of the extension.

Prova Clamp Meters are multifunction digital clamp meters which besides being capable of measuring True RMS AC currents, are also capable of measuring a wide array of power parameters including active power (W, KW and Horsepower), apparent power (VA and KVA), Watts (to 9999KW), reactive power (VAR and KVAR), energy consumption (mWH, WH, and KWH), phase angle and power factor (PF).

Besides their ability to measure energy, power, harmonics and current, Prova clamp meters can be also used as current leakage clamp meters with a very high resolution of 10µA which is better than the resolution found on many current leakage meters. Moreover, a fast peak capture of 39µS enables Prova clamp meters to capture fast inrush currents which can be found on fast changing loads or start-up of equipment.

These meters can read low power values as well as low current values in both mWH and mA ranges. They come with their own case with test leads, user documentation, and battery. Let’s take a look at some of the features of Prova clamp meters:

  • Multifunction Current, Power, Voltage, Energy, Leakage, and Harmonics;
  • True RMS AC voltage up to 600V;
  • True RMS AC current up to 90A;
  • Apparent power (KVA & VA);
  • Active Power (KW, W & Horsepower -HP);
  • Reactive power (KVAR & VAR);
  • Energy consumption (mWH, KWH & WH);
  • Power factor, phase angle measurements;
  • Measurement of phase sequence and balanced 3-phase power and;
  • Measurement of standby power consumption;
  • Leakage current measurement at 10µA resolution;
  • Non-interrupted power and harmonic analysis;
  • Good understanding of high-frequency harmonics analysis (up to 5/6 kHz);
  • Harmonic analysis of voltage and current;
  • Crest Factor (CF) and total harmonic distortion (%THD-F);
  • Fast Peak function of only 39µS for fast transients and inrush current;
  • Programmable CT ratio from 1 to 250;
  • MIN, MAX and DATAHOLD functions;
  • Active Power in horsepower;
  • Auto Power Off (30 minutes);
  • 30mm diameter jaw;
  • Autoranging.

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