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3. In the method of current flashover or impulse, operators should
pay great attention on the safety. Arrange the lines as ordered.
4. After the flashover testing, it should cut off the power, remove
the connecting line between the device and high voltage testing
equipment. Then discharge the high voltage capacitor and the
electric charge stored on the cabel. In discharging, it should first
add the current limit resistance R to limit the discharging current
and assuage the process of discharging. After the voltage of
capacitor is low, it can discharge directly to the ground until the
voltage is zero. If discharging in seconds, the instant current
can reach hundred amps and it can demage the device or
operators.
5. In the testing of current flashover, the whole process must be
under carefully monitoring to avoid the sudden rising in current.
If the flashover phenomenon does appear, it should reduce the
voltage at once and change to the impulse method.
6. Charge: When the battery energy is insufficient, should be
charged in time. If the instrument is not used for a long time, it
V
A
R
3
R
2
R
1
D
device
Test cable
C
L