How to Measure Voltage with Clamp Ammeter_ Can Clamp Ammeter Measure DC

How to measure voltage with clamp ammeter

Clamp on meter is an instrument used to measure the current of running electrical lines. It can measure the current without power. The clamp meter is actually a current transformer. The stuck wire is equivalent to the primary coil of the transformer. When there is current in the wire, magnetic flux will be generated in the iron core of the meter, and then the current will be induced in the secondary coil of the meter. This current is equal to the current in the primary coil multiplied by the number of turns of the primary coil (that is, a wire, so it is one turn) Divide by the number of turns of the secondary coil, and then according to this relationship, the current in the wire can be converted.

The clamp ammeter is actually an electromagnetic inductor. A energized wire generates a magnetic field. The magnetic field intensity generated by the current is different. The current value converted on the clamp ammeter is different because of the difference of three-phase voltage, so the current holes on each phase are different. Therefore, only the single-phase current can be measured, and then the average current can be calculated. Finally, the method used is the same whether it is three-phase 380V voltage or two-phase 220V voltage.

The clamp ring of the clamp multimeter is set for measuring current, but since the clamp multimeter is called, it is not only a function of measuring AC current.

Many clamp meters have the functions of measuring resistance, AC and DC voltage. In short, the functions of ordinary multimeter can be achieved on clamp multimeter. Many clamp gauges have the function of measuring DC current, but at present, most of them use probes rather than clamp rings.

Adjust to the current gear and directly clamp the wire to measure the current with a caliper.

Some clamp on meters can measure voltage, others can't. The voltage can be measured with a pen, inserting the pen into the corresponding hole, adjusting to the voltage file, and placing two pens on the voltage points to be measured, for example, a FireWire and a zero line.

Can clamp ammeter measure DC

Clamp on ammeter is a special instrument for measuring AC current. Its front end is a current transformer. It realizes the measurement task through the principle of electromagnetic induction.

The clamp ammeter cannot test the DC current, because the DC current has no alternating magnetic field, so the secondary current will not be generated in the clamp transformer, so it is impossible for the clamp ammeter to measure the DC current.

Clamp on ammeter is generally used to test AC current. It is made according to the principle of AC worm flow. It is a little like a transformer and obtains signals through electromagnetic induction. I use the DC ammeter in series on the circuit, but in theory, it is possible to make a DC Clamp ammeter. The method of measuring DC current by the AC clamp ammeter is similar to that of measuring AC current by the AC clamp ammeter. Select an appropriate measuring range, clamp a wire to be tested into the center of the jaw, and the corresponding current will be displayed on the display screen.

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