■ Functional features
▲ According to the test system selection configuration table, select specifications and models suitable for different power frequency interference intensity and line length: to meet the requirements of 0.2 ~ 1500km overhead line or cable line AC power frequency parameters test.
Power frequency interference resistance of the test device: reliable and stable output, accurate separation of power frequency interference signal and completion of all test items under the condition that the ratio of the output signal of the device to power frequency interference signal is 1:20.
▲ Power supply: single-phase AC 220V±10%, (10 ~ 40A) 50Hz±2%.
▲ Test device protection function
● Working power supply protection: when the input power of the instrument is connected to 380V power supply by mistake, the overvoltage alarm indicator is on and the buzzer gives out alarm sound at the same time.
● Device shell grounding and test grounding detection: when the device test grounding and shell grounding is not good, the device will issue warning characters and turn off the power output.
● With emergency stop button, in case of accidents, quickly cut off the power output and will be tested line head grounding, to protect the safety of testers and equipment.
● Other protection: the device has overvoltage, overcurrent, short circuit, overheating four kinds of protection, in the panel is equipped with a fault indicator, indicating the type of failure.
▲ Output characteristics of different frequency power supply:
● Output frequency: 45Hz/55Hz/260Hz fixed frequency output frequency is better than ±0.1%;
● Output waveform: standard sine wave, waveform distortion is better than ±2%.
■ Technical parameters
| Technical parameters | VS-2066A | VS-2066B | VS-2066C |
| Applies to line length | 1~500km | 0.5~800km | 0.2~1500km |
| Different frequency power supply | 3kVA | 5kVA | 10kVA |
| Input working power supply | Single phase | Single phase | Single phase |
| Grounding detection function | exist | exist | exist |
| Electrostatic voltage measurement | exist | exist | exist |
| High induction line core phase | exist | exist | exist |
| Roche coil is used in the nuclear phase | exist | exist | exist |
| Electromagnetic voltage measurement | exist | exist | exist |
| Grounding current measurement | exist | exist | exist |
| Maximum output current | 10A | 20A | 40A |
| Maximum output voltage | 200V | 400V | 600V |
| Anti-power frequency interference current | 40A | 60A | 100A |
| Electrostatic induction voltage | 20kV | 20kV | 30kV |
| Electromagnetic induction voltage | 600V | 600V | 600V |
| Pure cable line test | ─ | meet | meet |
| Two phase line test function | exist | exist | exist |
| Single phase equivalent capacitance test | exist | exist | exist |
| Mutual inductance imbalance test | exist | exist | exist |
| Coupling asymmetrical testing | exist | exist | exist |
| Applicable voltage class | 220 kV and below | 500kV and below | 1000kV and below |
| Impedance test range | 0.2 ～ 400Ω | 0.1 ～ 400Ω | 0.1 ～ 1000Ω |
| Capacitance test range | 0.1μF ～ 50μF | 0.05μF ～ 50μF | 0.02μF ～ 80μF |
| Mobile universal flat car | exist | exist | exist |
| Aerial pliers | ─ | exist | exist |
| Special test clamp line | 1 | 2 | 2 |
| Overall dimensions | 550mm×400mm×900mm | ||
| Weight | <65kg | <75kg | <85kg |
