4-5
4. Performing High Voltage Test
Switch off PGK
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2
4
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100mA
10mA
1mA100µA
10µA
1µA
F1
F2
PGK
T / min
U
DC
U
max
B
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20
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U [kV]
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Before switching off,
first reduce high voltage
After completion of test
Despite the automatically activated discharge device, it must be
assumed that the test object is still charged with maximum voltage.
Wait at least 10 seconds after the acoustic signal of the
discharge device before proceeding with the test object as follows:
1. Discharge with discharge rod,
2. Ground,
3. Short out!
Step Standard switch-off procedure
Turn voltage regulating knob fully counterclockwise. A
possible residual charge on the test object is indicated
on the voltmeter.
Press push-button switch for High voltage OFF .
Switch off Testing Set by pressing Power ON/OFF
push-button switch . Power-On pilot lamp and
green signal lamp are extinguished.
3
2
1
- after selected period on timer has been elapsed.
- by opening of the external electric gate (optional).
- by pressing the EMERGENCY STOP switch
(in case of danger).
- by tripping of the internal thermal switch.
The thermal switch provides instrument protection against
exessive operating temperatures. At an operating temperature of
more than 85°C the high voltage is switched off and the
discharge device is activated.
After tripping of the thermal switch, a cool-off period of the
Testing Set is required before the high voltage can be switched
on again.
Shut-down is also acomplished
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