HZRG-III Automatic Power Capacitor Capacitance And Inductance Tester

Power Capacitor Capacitance And Inductance Tester

I.Overview

Reactive power compensation capacitor is an important equipment to satisfy the reactive power balance of the power system. In recent years, the problem of reactive power has received general attention from the electrical industry, and a large number of reactive power compensation devices have been put into operation in the distribution network. Power supply requires real-time balance of active and reactive power in the system. Therefore, the reactive power compensation device should meet the requirements of automatic tracking and real-time compensation, which inevitably requires frequent switching and switching of reactive power compensation capacitor banks. The switching operation of the capacitor bank will produce overcurrent and overvoltage shocks, which will cause damage to the capacitor. In order to ensure the reliability of the equipment, early detection of capacitor defects and avoid the expansion of faults, regular inspections are required. In the field, capacitors are all connected in groups in parallel. The traditional method is to remove the capacitor bus and then measure with an old-fashioned capacitor meter. Since the capacitor bank is composed of dozens to hundreds of small capacitors, it is necessary to disconnect the wires to measure the capacitance. The amount is large, and frequent removal of the wires will cause the screws to slip or not tighten, leaving a safety hazard, and it is also easy to cause secondary damage to the capacitor. Therefore, it is very desirable to have a test instrument that can measure the capacitance of each small capacitor without removing the wires, reduce the burden on maintenance personnel, improve the efficiency of maintenance work, and improve the safety of the distribution network operation.

In view of the actual situation on the spot, our company finally developed this kind of instrument that uses the new test method to measure. The instrument can measure the individual capacitors of a group of parallel capacitors without disconnecting the wires, using advanced measurement principles and four-terminal measurement technology, which can accurately measure and have good test repeatability; in line with SJ-255-10300 capacitance measuring instrument National standard. At the same time, it can also measure the inductance of various reactors. The instrument has convenient wiring and simple operation, which reduces the workload of maintenance personnel, greatly improves the efficiency of on-site testing, and provides security for the normal operation of the power grid.

II.Features

1. This instrument can measure the single capacitance of a group of parallel capacitors (both single-phase capacitance and three-phase capacitance can be measured) without disconnecting the wires. At the same time, this instrument can also measure the inductance of various reactors to meet the requirements of the site. Kind of use. Three-phase capacitance measurement is wired once according to the connection method of the capacitor bank according to the wiring diagram. The built-in automatic commutation wiring function of the instrument eliminates the cumbersome wiring commutation short-circuit operation, and the result is automatically output after the test is completed.

2. During the measurement, the instrument can display the measured voltage, current, power, frequency, impedance, phase angle and other data while measuring the capacitance value or inductance value, so as to better analyze the quality of the sample;

3. The instrument uses an 8.0-inch 800600 graphic dot matrix K600 plus core 65K DGUS screen, touch operation, clear observation during day and night, English menu prompts, easy operation.

4. The instrument has built-in large-capacity non-volatile memory: 200 groups of measurement data can be stored.

The instrument is equipped with a U disk interface, which can store any group of measurement data (limited by the capacity of the U disk).

5. The instrument has a built-in high-precision real-time clock function: date and time calibration can be performed.

6. The instrument comes with a high-speed micro thermal printer: it can print measurement and historical data.

7. Instrument test power supply overcurrent protection function: short circuit of power output will not damage the instrument.

III,Technical index

1. Test voltage: AC 25V±10 percent , 50Hz

AC 1.25V±10 percent , 50Hz 25VA

2. Measuring range and accuracy:

Measurable capacitance range: {{0}}.1uF-6800uF±(reading 1 percent plus 0.01uF)

Measurable inductance range: 50uH-20H ±(reading 3 percent plus 0.05uH)

Measurable current range: 5mA-20A±(reading 3 percent plus 0.05mA)

Measurable resistance range: 20mΩ-20kΩ±(reading 3 percent plus 0.1mΩ)

3. Dimensions: 400mm300mm200mm

IV,Conditions of Use

Environmental temperature: -20 degree -40 degree

Environmental humidity: Less than or equal to 85 percent RH

Power supply:AC220V±10 percent ,50±1Hz

Tagiau poblogaidd: HZRG-III Automatic Power Capacitor Capacitance And Inductance Tester, China, suppliers, manufacturers, price, for sale, inductance capacitance measurement, capacitance and inductance test, HZRG-III, capacitance and inductance measuring instrument, Automatic Digital Capacitance Bridge Inductance Tester