Introduction


It focuses on solving the following problems:

(1) On-site measurement of capacitors requires removing connecting wires, which is not only labor-intensive but also prone to damaging the capacitors;

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

This instrument features minimal measurement workload, quick and simple operation, stable performance, accurate measurement, and a high fault detection rate. Additionally, its current measurement unit can also be used for measuring electrical equipment such as CVTs and surge arresters, offering multi-functionality in one device.

Features of the Automatic Capacitance Bridge Tester:

Automatic range switching

Data storage

Large LCD screen (320×240×LCD) with Chinese menu operation prompts.

Simultaneous display of waveforms and measurement data on the same screen, making the testing process more intuitive;

Equipped with setting, calibration, and debugging functions

Technical Parameters


1. Measurement range and accuracy of the instrument:

a. Capacitance measurement

(1) Capacitance measurement range: 0.1μF to 2,000μF;

(2) Reactive power measurement range: 5 to 20,000 kvar;

(3) Measurement accuracy: ±1.0%;

(4) Resolution: 0 to 1.999μF ±1.0%rdg;

0 to 19.99μF ±1.0%rdg;

0 to 199.9μF ±1.0%rdg;

0 to 1999μF ±1.0%rdg;

b. Current measurement

(1) Current measurement range: 0 to 199.9mA;

0 to 1.999A;

0 to 19.99A;

0 to 199.9A

0 to 1000A;

(2) Measurement accuracy: ±1.0%;

2. Power supply:

a. Rated voltage: 220V±10% at power frequency;

b. Rated frequency: 50Hz;

c. Rated output: 26V/500VA;

3. Normal working conditions for the instrument:

a. Ambient temperature: 0℃ to +40℃

b. Relative humidity: ≤90%

4. Display method: Large LCD screen with full Chinese output,

TPμp-40 panel-mounted thermal printer

5. Dimensions/Weight: 320×360×160 mm / 8 kg

6. Working principle

The capacitance bridge adopts a bridge circuit structure, with the standard capacitor and the capacitor under test as two arms of the bridge. When measuring the capacitance value, the test switch K is closed, and the test voltage is applied simultaneously to the standard capacitor and the capacitor under test. The processor collects the current signals flowing through both via sensors and processes them to obtain the capacitance value of the capacitor under test.

Due to the synchronous sampling technology of the standard capacitor and the capacitor under test, it is not affected by power supply voltage fluctuations; moreover, the measurement process is fully automatic, avoiding errors caused by manual operation, thus featuring good stability, repeatability, accuracy, and reliability.

Error Values



Inductance Measurement Range Error Value
0.10mH ～ 0.200H ±0.5%
2.000H ～ 20.00H ±0.5%
20.00H ～ 200.0H ±0.5%
200.0H ～ 2000.H ±0.5%


Capacitance Measurement Range: Error Value:
0.020μF ～ 0.200μF ±0.5%
0.200μF ～ 2.000μF ±0.5%
2.000μF ～ 20.00μF ±0.5%
20.00μF ～ 200.0μF ±0.5%
200.0μF ～ 2000.μF ±0.5%

 

Inductor Reactive Power 0 ～ 20.00Mvar Error Value ±1%
Inductor Active Power 0 ～ 20.00kW Error Value ±1%
Inductor Dissipation Factor 0 ～ 20.00% Error Value ±1%
Inductor Resistance Component 0 ～ 10.00MΩ Error Value ±1%