Dehn PHE III Gebrauchsanleitung Seite 27

If several extension handles with HV STK... plug-in coupling are used, the combination of PHE3...
voltage detector (including test probes, if any) and insulating stick (including all extensions) must
not exceed a total length of 7000 mm.
!
Do not contact the section above the hand guard
The insulating section (insulating clearance) of the voltage detector must not contact live parts of
the installation.
The test prod
ring and earthed parts across its full length.
The "voltage present" indication must appear if the line-to-earth voltage of the part to be tested
is more than 45% of the nominal voltage. The "voltage present" indication must not appear if the
line-to-earth voltage of the part to be tested is equal to or less than 10% of the nominal voltage.
Observe the impact of interference fields.
Note:
The values mentioned above only refer to voltage detectors for use in three-phase systems. The
response values of special versions (observe note on the rating plate!) for other systems such as
single-ended or centre-earthed monophase systems are rated according to the relevant system
configuration.
5.1 Rating plate:
The technical data (nominal voltage, nominal frequency) and instructions on the rating plate must
be observed (see Fig. 5.1).
5.2. Nominal voltage / nominal voltage range
The PHE3... voltage detector series includes devices with a single
nominal voltage, devices with a nominal voltage range and devices
with a switchable nominal voltage range. The response behaviour of
the PHE3... voltage detector depends on the nominal voltage U
the nominal voltage range specified on the rating plate. The insulation
resistance and protection against bridging of the voltage detector are
rated for the maximum equipment voltage U
The voltage detector may only be used for the following maximum
equipment voltages U
5.2).
U / kV
3
n
U / kV
3,6
r
Table 5.2
of the voltage detector may contact live parts of the installation up to the red
according to its nominal voltage Un (see Table
r
6 10 15
7,2 12 17,5
!
5
.
r
20 30 45
24 36 52
* only for systems with effectively earthed neutral point
or
n
Fig. 5.1
60 110 132*
72,5 123
150*
145* 170*
9