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Gossen Metrawatt SECULIFE ST HV Manual

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GMC-I Messtechnik GmbH 25
õ Select the desired nominal voltage
from the display with the key.
The instrument multiplies this nomi-
nal voltage by a factor of 1.5, which
represents the actual test voltage
(see chapter 10.3).
Note: For SC I, the test voltage can
be set to maximum 1.5 kV.
õ Test voltage is applied to the test
socket, and in turn the device under
test, for as long as the
key is
held depressed. Activation of high-
voltage is indicated with an acoustic
signal.
Currently measured minimum output voltage U
HV AC
(measured value
divided by 1.5), test voltage U
DC
, and remaining test time are displayed.
õ Safety class II: Contact all exposed, conductive parts, simultaneously
if possible, in order to avoid unnecessarily long test durations or
repeats. Avoid contacting individual parts sequentially.
õ After the key is released, the equivalent AC voltage is displayed which
occurred during testing. This voltage is indicated as the test result. If
this value is less than the pre-selected nominal voltage, the test is
failed.
õ If you want to repeat the test, press the key. The test sequence is
started over again with selection of nominal voltage.
Attention!
!
If sparkover should occur, the test is immediately interrupted
and the voltage measured at the moment sparkover occurred is
display as U
HV AC
.
If the device is disconnected from the test socket during testing,
even though this is prohibited, the test is immediately inter-
rupted. The following message is displayed: “Caution, device
under test is still charged!”
Testing as Part of a Test Sequence
õ Select the high-voltage menu under the setup function for the respec-
tive test regulation in order to set parameters for the high-voltage test.
õ Enter the desired AC nominal voltages for safety classes I and II. The
instrument multiplies the respective AC nominal voltage by a factor of
1.5, which represents the actual DC test voltage (see chapter 10.3).
Test voltage is determined based upon the selected, or the automati-
cally recognized safety class.
õ Save the setup values to memory.
õ Start the high-voltage test by pressing the key, if “manual
sequence” has been selected in the setup menu.
õ Safety class II only: Contact the device under test with the probe.
Activation of high-voltage is indicated with an acoustic signal.
The selected nominal voltage of 3.5 kV results in a DC output voltage of
maximum 5.25 kV.
The high-voltage test is ended auto-
matically after the test duration has
elapsed.
U
HV DC
: Equivalent test voltage in DC
U
HV AC
: Measured DC value divided
by 1.5
If the value U
HV AC
is less than pre-se-
lected nominal voltage U
AC
, the test is
failed.
Note
+
In the event of sparkover, the voltage measured at the moment
sparkover occurred is displayed in the test results as minimum
value U
HV AC
, along with the reason the test was failed.
… 25 …


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