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Technical index
·Measurement channel: independent 1 channel/2 channels.
·The capacitance range of the testable product is 6pF~250uF.
· Detection sensitivity: 0.01pC.
·Sampling accuracy: 12bit; sampling rate: 20M/S.
·Display working mode
(1) Display method: ellipse-sine-straight line;
(2) Trigger synchronization mode: divided into internal and external trigger modes, the internal trigger is the instrument power synchronization trigger, 50Hz; the external trigger is the synchronous test power working frequency, any frequency within 50~400Hz;
(3) External trigger synchronization signal input voltage: 10~200V, input power <1V;
(4) Signal phase determination: the ellipse is displayed in polar coordinate mode, the sine is displayed in sine wave mode, the starting point of the display graph is the zero point of the test power supply, and the length of the display graph is one cycle of the test power supply. The system is in external trigger synchronization mode. The period and phase of the test power supply are displayed truly and accurately.
·Time window: The phase size can be selected arbitrarily, and the time window can be dynamically enlarged and displayed. The two time windows can be opened separately or simultaneously.
Filter frequency band: 3dB low frequency end frequency L is divided into 10, 20, 40kHz gears, 3dB high frequency end frequency H is divided into 80, 200, 300kHz gears, fL and H can be flexibly formed into various filter passbands.
·signal amplifier:
(1) Gain adjustment: It is divided into coarse gain adjustment and fine gain adjustment. The coarse gain adjustment is divided into 5 levels, the gain difference between the levels is 20dB (10 times), the error ±1dB is adjusted; the gain fine adjustment range>20dB;
(2) The asymmetry of the amplifier's positive and negative polarity response: <1dB.
·Partial discharge signal measurement: The partial discharge signal can be measured in continuous, amplified and other display modes with an error of ±5% (in full scale).
·With data storage and playback functions, with printing functions, standard test reports can be generated.
·Working environment temperature: -10~45℃, relative humidity: ≤95%.
·Power supply AC220V; frequency 50Hz; power 30W.
