Automatic Capacitance and Inductance Tester Manufacturer
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The Automatic Capacitance and Inductance Tester, referred to as the Capacitance and Inductance Tester. It adopts a bridge circuit structure, with the standard capacitor and the tested capacitor as the two arms of the bridge circuit. When measuring the capacitance value of a capacitor, close the test switch K, and the test voltage is simultaneously applied to the standard capacitor and the tested capacitor. The processor collects the current signals flowing through both via sensors and processes them to obtain the capacitance value and resistive component of the tested capacitor.
Main Functions
"Technical Measures for Preventing Capacitor Device Accidents" stipulates: For high-voltage shunt capacitor sections, the capacitance of individual capacitors in the capacitor bank should be measured regularly. It is recommended to use a measurement method that does not require disconnecting the connecting wires, to avoid leakage faults caused by stress on the bushing due to disassembly and assembly of connecting wires.
It is specially developed to address the problems existing in measuring the capacitance value of individual capacitors in shunt capacitor banks and SCV devices at substation sites. It has the following functions:
* Measure the capacitance of individual or entire shunt and integrated capacitors without disconnecting wires.
* Measure the inductance of reactors and line traps without disconnecting wires.
* Measure the entrance capacitance of transformers and generators without disconnecting wires.
* Has the function of measuring parallel (discharge) resistance values.
* Can compensate for the problem of low fault detection rate caused by low output voltage of capacitance meters.
* Simultaneously displays voltage and current waveforms and phase, and calculates the power loss of the tested capacitor.
Working Principle
The Automatic Capacitance and Inductance Tester adopts synchronous sampling technology for the standard capacitor and the tested capacitor, which is not affected by power supply voltage fluctuations; moreover, the measurement process is fully automatic, avoiding errors caused by manual operation, thus it has the characteristics of good stability, good repeatability, and accuracy and reliability.
Technical Parameters
1. Capacitance range: 0.2μF～2,000μF;
Capacity range: 5～20,000 kvar;
Measurement accuracy: ±1.5%×reading ±2 digits;
Resolution: ±1.0%rdg;
2. Inductance range: 1mH～9.99H; Measurement accuracy: ±1.5%±2 digits
3. Output measurement voltage: AC 26V/500VA; 50Hz;
4. Display mode: large-screen LCD with full Chinese output, TPμp-40 panel-type thermal printer
5. Dimensions and weight: 370×370×220 mm/ 8 kg
6. Working conditions:
Ambient temperature: 0℃ ～+40℃, relative humidity: ≤90%
Power supply: AC 220V±10%; 50Hz;
Measurement range, resolution, and error values
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
