Inductance measuring instrument working principle and wiring method

Inductance measuring instrument is a kind of commonly used measuring instrument, which has a simple use of sorting function, which can meet the requirements of people's use of the unit's incoming inspection and rapid sorting measurement of the inductor production line. Today Xiao Bian mainly introduces the working principle and wiring method of the inductance measuring instrument, hoping to help the user to better use the inductance measuring instrument.

Inductance measuring instrument working principle

The inductance tester adopts a bridge circuit structure, and the standard inductor and the tested inductor serve as two arms of the bridge circuit. When measuring the inductance value of the inductor, the test voltage is simultaneously applied to the standard inductor and the tested inductor. The processor obtains the inductance value of the tested inductor by processing the current signal passing through both the sensor and the collector.

Due to the use of standard inductors and the synchronous sampling technology of the tested inductors, it is not affected by the fluctuation of the power supply voltage; in addition, the measurement process is performed fully automatically, which avoids errors caused by manual operations, and therefore has good stability, good repeatability, and accuracy. Reliable features.

Inductance meter wiring method

1. One end of the voltage cable is connected to the voltage output terminal;

2, test current signal cable plug in the current input plug,

3, connect the capacitor bridge power line.

4. The test voltage cables are respectively clamped on the connection busbars of the two tested capacitor banks. The clamp meter is stuck at the casing of the single capacitor to be measured.

Note: Be sure to connect the voltage output red end wire from the front of the clamp meter to the casing of the single capacitor (reactor) that needs to be measured. The measurement will be inaccurate when connected.