Three-Phase Capacitance and Inductance Tester


Three-phase capacitance and inductance tester is specially developed to solve the problems existing in measuring the capacitance value of individual capacitors in shunt capacitor banks at substation sites. It focuses on solving the following problems:

(1)Measuring individual capacitors on site requires removing connecting wires, which is not only heavy workload but also easy to damage capacitors.

(2)The low output voltage of capacitance meters leads to low fault detection rate.

(3)Measuring the inductance of reactors

(4)Quickly measuring the capacitance of individual capacitors in three-phase delta and Y-connected capacitor banks.

Technical Parameters


1. Capacitance range: 0.2μF~2,000μF;

Capacity range: 5~20,000 kvar;

Measurement accuracy: 0.2μF~2μF (internal CT) ±1% reading ±0.02μF;

0.2μF~2μF (clamp meter) ±1.5% reading ±0.05μF;

2μF~2,000μF ±1% reading ±2 digits;

2. Inductance range: 1mH~9.99H; Measurement accuracy: ±1.5% reading ±2 digits

3. Output measurement voltage: AC 26V/500VA; 50Hz;

4. Display: LCD screen, full Chinese output, panel-type thermal printer

5. Dimensions/Weight: 370×370×220 mm/ 16kg

6. Working conditions:

a. Ambient temperature: 0℃~ +40℃, relative humidity: ≤90%

b. Power supply: AC 220V±10%; 50Hz;

In the tested capacitor branch, there is a sampling circuit for sampling the voltage and current of the tested capacitor. The output terminals of the sampling circuit are respectively connected to amplifier circuits. The voltage signal output from the voltage amplifier circuit and the current signal output from the current amplifier circuit output a phase difference signal through a phase detector. After the voltage signal and current signal pass through an A/D converter, they are input to the CPU for calculation to obtain the tested capacitance value. The movable current sampling unit allows direct measurement of capacitance without removing connecting wires. In addition, the gear during measurement is automatically selected, avoiding errors caused by manual operation, with good stability, good repeatability, accuracy and reliability



.