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ZX-CA Automatic Capacitance Current Tester

At present, the neutral point of the power supply of our power distribution system is generally not directly grounded, so when the line is single-phase grounded, the current flowing through the fault point is actually the capacitive current generated by the line-to-ground capacitance. According to statistics, the fault of the distribution network is largely caused by the excessive capacitance when the line is single-phase grounded, which cannot cause the arc to self-arrest. Therefore, China's electric power regulations stipulate that when the capacitance current of 10kV and 35kV systems is greater than 30A and 10A respectively, an arc suppression coil should be installed to compensate for the capacitance current, which requires a decision after measuring the capacitance current of the distribution network.

Technical indicators

1. Ambient temperature: -10 ℃ ~ 50 ℃

2. Environmental humidity: ≤85% RH

3. Working power supply: AC220V ± 20%

4. Power frequency: 50 ± 5Hz

5. Measuring range

1) Capacitance: 0.3 ~ 125μF

2) Current: 1 ~ 250A

6. Measurement error: ≤5%

7. Dimensions: 345mm × 295mm × 175mm

8. Instrument weight: 5kg

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