Structure, working principle and price of clamp Ammeter
When our electricians need to measure the current without disconnecting the circuit, they need to use clamp Ammeter (sometimes referred to as clamp meter, clamp meter). Clamp Ammeter is a kind of instrument used to measure the current in the running electrical circuit. It is a common measuring tool for electricians. Clamp Ammeter is divided into clamp AC Ammeter and clamp AC/DC ammeter. Some can also measure AC voltage.
Structure and working principle of clamp Ammeter:
Clamp type AC Ammeter is essentially composed of a current transformer and a rectifier instrument. The measured current carrying conductor is equivalent to the original winding of the current transformer. On the iron core is the secondary winding of the current transformer, which is connected to the rectifier instrument. According to the proportional relationship between the primary and secondary windings of the current transformer, the rectifier instrument can display the current value of the measured circuit.
The clamp type AC/DC meter is an electromagnetic instrument, with the measured current carrying wire placed in the clamp as the excitation coil. The magnetic flux forms a loop in the iron core, and the electromagnetic measuring mechanism is located in the middle of the gap in the iron core, which is deflected by the magnetic field to obtain readings. Because its deflection is not affected by the measurement current, it can measure AC and DC currents.
