HIPOT Tester 19051/19052/19053/19054 Quick Start Guide
procedures to execute.
<<< Note! When testing insulation resistance is charging. >>>
8. Charge
When the insulation resistance is testing, DUT, capacitor, test cable,
probe and output terminal even includes the tester are full of high
voltage. After turning off the power switch, it needs a period of time to
discharge. Please obeys the above descriptions, don’t touch any
place may cause shock especially on power just turn off.
9. Confirm charging voltage has been discharged completely
The discharged time of charging voltage is depends on testing voltage
and DUT characteristic. To assume that high voltage add to DUT is
equivalent to high voltage add to 0.01uF capacity parallel 100MΩ
resistance circuit. When test voltage is 1000V, then after turned off
power, the voltage which add on testing and DUT decrease to lower
than 30V and needed time about 3.5 seconds. When test voltage is
500V, needs about 2.8 seconds. To assume the time constant of DUT
is known, if you want to know the voltage decrease to below 30V
needed time. Please follow the above procedures, multiply needed
time of decreasing to below 30V by time constant. As figure 2-5.
Figure 2-5
1905x
<Formula>
Test Voltage * e
–t/RC
= Residual Voltage
Ex.: 1000V * e
–t/RC
= 30V
ln e
–t/RC
= ln 0.03
- t / RC = -3.5
t = 3.5 sec
10. Remote control the main unit
The instrument with remote control, high voltage output control by
external control signal usually. For your safety and prevent from
hazard, please obeys the following rules.
y Don’t allow any unexpected high voltage output that may cause
danger.
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