Clamp Meter for Measuring AC Current
A clamp meter for measuring alternating current is essentially composed of a current transformer and a rectifying magnetoelectric system ammeter. The measured current-carrying wire is equivalent to the primary winding of the current transformer, and the secondary winding is connected to the meter head. When the measured current-carrying wire is placed in the jaws of the split core of the current transformer, it is equivalent to the primary coil of the current transformer. The working current induces a magnetic flux in its core circuit, and the magnetic flux passes through the secondary winding to induce a secondary voltage. , and form a current in the secondary load, the pointer of the ammeter will shift to indicate the current value. Due to the large leakage resistance of the split core part, it is not suitable for precise measurement and the following small current measurement. The models of this watch are one, one, one type and so on. Among them, the Type 1 and Type 1 clamp ammeters can also measure voltage.
