Technical measures for preventing accidents in capacitor devices” stipulates that for high-voltage shunt capacitors, the capacitance of individual capacitors in the capacitor bank should be measured regularly, and it is recommended to use a measurement method that does not disconnect the connecting wires, to avoid faults such as oil leakage from the bushing due to stress caused by disassembling and assembling the connecting wires.
It is specially developed for the problems existing in measuring the capacitance of individual capacitors in shunt capacitor banks and SCV devices at substation sites. It has the following functions:
* Measure the capacitance of individual capacitors or the entire bank of shunt and collective 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 display voltage and current waveforms and phase, and calculate the power loss of the tested capacitor.
Working Principle
Automatic Capacitance and Inductance Tester adopts synchronous sampling technology for standard capacitors and the tested capacitor, which is not affected by power supply voltage fluctuations; in addition, the measurement process is fully automatic, avoiding errors caused by manual operation, so 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 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
