It mainly solves the following problems:
(1) On-site measurement of capacitors requires removing connecting wires, which is not only labor-intensive but also prone to damaging capacitors;
(2) The low output voltage of capacitance meters leads to low fault detection rates.
This instrument features minimal measurement workload, quick and simple operation, stable performance, accurate measurement, and 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 of the instrument:
a. Ambient temperature: 0℃ to +40℃
b. Relative humidity: ≤90%
4. Display mode: 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
This capacitance bridge adopts a bridge circuit structure, with the standard capacitor and the capacitor under test as two arms of the bridge circuit. When measuring the capacitance value of a capacitor, close the test switch K, and the test voltage is applied to both the standard capacitor and the capacitor under test simultaneously. 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 immune to power supply voltage fluctuations; moreover, since the measurement process is fully automatic, errors caused by manual operation are avoided, thus featuring good stability, repeatability, accuracy, and reliability.
