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7.4 Historical trend chart
Fig. 7.4 Historical trend chart
The histogram is utilized to display the historical discharge records; each vertical column
represents the historical discharge capacity; green represents normal, yellow represents the early
warning and red represents warning.
7.5 Discharge capacity diagram
Fig. 7.5 Discharge capacity diagram
As shown in the figure, the diagram shows the current partial-discharge capacity level; green
represents normal, yellow represents the early warning and red represents warning.
VI. Introduction of partial discharge measurement
The measurement method of HZJF-9008 handheld partial discharge detector is simple; the
equipment needs no recalibration in actual measurement since the value has been calibrated before
delivery; it only needs to select the appropriate test mode (TEV\AE) and measure directly with the
built-in sensor.
1. TEV measurement:
The host shall be perpendicular to the surface of the equipment being tested so that the
front-end TEV sensor can place on the surface of high-voltage equipment, and then test different
locations to observe the changes of data and waveform, then the recorded data can be read.
