The operation of the clamp ammeter is exquisite
Make sure to clamp a measured wire when using a clamp ammeter to determine the current (wire). It is impossible to measure the current when two (parallel) wires are clamped. Moreover, the detection error is minimal when the clamp ammeter's center (core) is employed for detection. It is more practical to utilize a line splitter when examining the power usage of home appliances. The current below 1A can be enhanced before detection since some line splitters have the capacity to amplify the detecting current by ten times.To measure DC current (DCA), use a DC clamp ammeter; if the current flows in the other direction, it will show a negative number. This feature can be used to determine whether the battery of the car is charging or discharging.
True RMS detection
The clamp ammeter in the average value mode uses AC detection to find the sine wave's average value, and it then shows the effective value after 1.11 times (sine wave AC) of amplification. Also, it is shown after being magnified 1.11 times, resulting in an indication error. Use a clamp-on ammeter that can directly measure the genuine RMS value in order to detect waveforms other than sine waves and crooked waves.
Leakage detection
Apart from the typical current detection, leakage detection requires clamping of two (single-phase 2-wire type) or three (single-phase 3-wire type, three-phase 3-wire type) wires. For detection, it can also clamp the grounding wire. Low-voltage circuit leakage current detection using insulation management has taken over as the main method of assessment. The plant has gradually adopted the leakage current clamp meter to detect since it was confirmed (revision of electrical equipment technical requirements in 1997).
