Clamp ammeter measuring current method

(1) The current of the measured current should be estimated before the measurement, and the appropriate range should be selected so that the pointer indicates that the measurement exceeds the middle scale. It is not possible to measure large currents with small range gears. When there are countless currents in the heart, the range switch should be placed in the highest gear first, and then converted to the appropriate range according to the measured value. Note that when shifting, the wire to be tested should be placed outside the clamp ammeter tab.

(2) The clamp ammeter generally has a large measuring range. When measuring the current below 5A, in order to obtain an accurate reading, the current-carrying conductor can be measured on the core and then measured, but the actual measured value should be the meter reading. Take the number of turns.

(3) The wire to be tested should be placed in the center of the jaw as much as possible, which can reduce the measurement error.