- Fast and accurate measure the positive sequence capacitance, positive sequence impedance, zero sequence capacitance, zero sequence impedance. Can also measure the mutual inductance and coupling capacitors between the lines (line DC resistance used dedicated YTLRT to test)
- Strong anti-interference ability, accurate measurement under the condition of different frequency and frequency interference signal in ratio of 1:10.
- External wiring is simple, only one access to the lead line of the tested line can complete all the line parameters measurement
- Instrument takes DSP digital signal processor as the core, integrated the test power, meter, calculation model integration into one instrument. Big screen, rotation mouse operation mode, micro printer printing results, the operation is very convenient
- Test process is quick, automatically test mode control, voltage step-up & step-down control and data measurement and calculation, and print the measuring results, a sequence parameter measurement completes in one and a half minutes, test time is reduced, can greatly reduce the workload, 5 minutes can complete the work that traditional method used two hours .
- High precision measurement, instrument itself provide different frequency AC power supply (52.5Hz 47.5Hz) which close to power frequency, easy separation power and other interference and effectively realize high precision measurement of small signal.
- To solve the test wiring switching are tedious, anti-jamming, stability, accuracy and other problems of the existing test methods.
- Can save 2048 sets of test data, and do data management and report generation through the USB interface to the host computer.
Thông số kỹ thuật
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Power supply
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3 phase, AC380V±10%, 10A, 50Hz (effective value)
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Characteristics of the different frequency power supply inside the instrument
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Max output voltage
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3 phase, 0~200V(effective value＜±1%)
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Max output current
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6.5A
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Output frequency
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47.5Hz，52.5Hz
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Measurement range
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Capacitance
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0.1~30μF
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Impedance
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0.1~400Ω
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Impedance angle
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0°~360°
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Length of line: 0.3km-400km
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Measurement resolution
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Capacitance
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0.01μF
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Impedance
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0.01Ω
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Impedance angle
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0.01°
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Measurement accuracy
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Capacitance
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≥1μF, ±1%RD±0.01μF
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＜1μF时,±3%RD±0.01μF
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Impedance
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≥1Ω时, ±1%RD±0.01Ω
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＜1Ω时, ±3%RD±0.01Ω
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Impedance angle
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Test condition: current＞0.1A
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±0.3°(voltage＞1.0V),
±0.5°(voltage:0.2V～1.0V)
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Anti interference: Z0: Total zero sequence impedance of a line 1 phase
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No interference suppression devices, test equipment itself has the ability to resist interference, anti interference index
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Electromagnetic induction voltage: <500V
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Interference current: <5+(120/Z0); unit: A
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Electrostatic induction voltage: <30kV
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With interference suppression devices, total test equipment resist interference ability, anti interference index
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Electromagnetic induction voltage: <3000V
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Interference current: resistors in series <4+(900/Z0); unit: A
resistors in parallel <6.5+(487.5/Z0); unit: A
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Electrostatic induction voltage: <30kV
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Protection function
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Over-current, over-voltage, grounding protection.
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THD
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Sine wave,＜2%.
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Service condition
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Temperate: -15℃～40℃; humidity ≤90%
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Dimension
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595*500*530mm
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Weight
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75KG
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