Dehn PHE III Gebrauchsanleitung Seite 34

6.3.2 Functional test (PHE III... voltage detectors with nominal voltage selector switch):
Before verifying safe isolation from supply voltage, a functional test must be performed. This
functional test should be conducted with the voltage selector switch set to the lowest voltage
range, e.g. in the "3...10 kV" position (see Fig. 6.3.1, page 13). When pressing the "TEST"
button (for approximately 3 seconds;) the indicator is switched on and its proper operation is
checked (response threshold). When pressing the "TEST" button, the red light flashes and an
intermittent acoustic signal sounds. When releasing the "TEST" button, the green light is
permanently illuminated.
 Voltage detector with M12 threaded pin (operational for approximately 40 to 60
seconds)
 Voltage detector with universal gear coupling (operational for approximately 90 to
120 seconds).
(see Fig. 4.2.1 and 4.2.2, page 9).
If the functional test cannot be performed properly, insert a new battery (see section 9,
page 16).
Now repeat the functional test. If the indication signals described above still do not appear,
immediately remove the voltage detector from service and send it to DEHN + SÖHNE
for repair.
6.3.3 Using the voltage detector in an installation (PHE III... voltage detectors with
nominal voltage selector switch):
After performing a functional test (green light is permanently illuminated) and before
verifying safe isolation from supply voltage, the nominal voltage selector switch must be set
to the nominal voltage of the installation to be tested.
For installations with a nominal voltage for example of 10 kV safe isolation from supply
voltage can be optionally verified in position 1 (3...10 kV) or position 2 (10...30 kV)
(see Fig. 6.3.1, page 13) of the nominal voltage selector switch. This method can be utilised
whenever the nominal voltage is at the upper limit of position 1 of the lower limit of
position 2.
The test electrode (E) (see Figs. 1 to 3, pages 5 to 7) of voltage detector can now be moved
closer to the part of the installation to be tested. The relevant voltage / operating state of the
part of the installation to be tested is now visually and (acoustically) indicated via the
indication signals (see Fig. and Table 6.3.2). The voltage test may only be performed as long
as the green light is permanently illuminated, that is the voltage is ready for testing. As soon
as the voltage detector is
If further tests are to be carried out, press the
test. For this purpose, the nominal voltage selector switch must be set to the lower voltage
range, i.e. position 1 (see Fig. 6.3.1, page 13).
If "voltage present" (red light) is indicated, an electronic interlock prevents that the
detector is automatically switched off during testing. After the test has been completed, the
device remains ready for testing (permanent green light) as long as it is operational (see Fig.
6.1 and Table 6.1) to perform further tests.
Another functional test must be performed after testing.
no longer operational
"TEST"
Page 14
(see 6.3.2), it is switched off automatically.
button again to perform a functional
1598_0314_ Mat No. 69682