Safety and Functional Tester GLP2-i/e
During the test, test object and test leads must not be touched!
The safety measures required by law must be adhered to!
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5.6.1 Special features of the single test high voltage AC
The single test for the high voltage AC has additional special features to the normal test mode.
Burning:
Some high voltage devices allow the so-called "burning" for the high voltage test. In this mode, the high
voltage is not switched off in case of over-current. Although a flashover at the test object can be seen
better, the test object can be destroyed through this. In this mode, an over-current circuit-breaker at the
front panel releases after some time, which protects the transformer of the testing device. The mode is
activated by setting the maximum current so high that the text “burning” appears on the display.
Test time, Active current, Reactive current:
During the high voltage test, always the voltage and the normal current of the test is always indicated.
In addition to these two indications, the test time, the active current or the reactive current can be indicated
alternatively. These values are indicated only additionally, the over-current evaluation is still performed via
the effective current.
Loss tangent:
During the single test, it is possible to indicate the loss factor (Tangens Delta) in addition to the normal
current.
This is the factor between active current and reactive current active current / reactive current).
Pulse operation:
For the single test, the test mode pulse operation can be activated. After an overcurrent or a flashover, the
high voltage is switched off in this mode and switched on again after approx. 300ms. In addition, the
number of overcurrents, which have appeared during the test, are indicated.
Option ARC detection:
The high voltage test AC can optionally be equipped with an ARC test.
In the single test, the test mode ARC detection can be activated.
Light flashes without considerable current increase and without short circuit to ground is the most critical
type of high voltage fault. The flashes or discharge currents are often only of short duration. The current
impulses often only have an impulse width of 10us. Over a long time period, these impulses can destroy the
insulating material.
With this test, such discharges are detected. The number of unloadings in a period (50 hertz => 20ms) is
counted and indicated.
Voltage indication:
In the single test during the AC high-voltage test it ispossible to change the test voltage indication from
RMS to PEAK (peak value).
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