Performance Of The Measurements; Insulation Measurement - BEHA Unitest Telaris ISO Plus Mode D'emploi

PTDB90690001.qxd:PTDB9069-02.qxd
Measurements
6.0 Performance of Measurements

6.1 Insulation Measurement

The UNITEST TELARIS ISO plus generates the test
voltage as pre-set via the measurement function se-
lection dial (19) at the connection socket RISO (14).
A current-voltage measurement is used to deter-
mine the respective insulation resistance.
A built-in automatic device calculates the current
measurement value within a few seconds. Thus, a
multitude of measurements may be carried out sav-
ing time and battery power. The measurement time
depends on the insulation resistance measured and
on the capacity.
Prior to any insulation measurement ensure
that the system parts to be tested are not live.
Failure to respect this prescription can cause
instrument damage.
During insulation measurement all loads must
be disconnected from the mains. Furthermore,
ensure that all interrupters of the system being
tested are switched on.
During the measurement the UUT/the system
being tested may not be touched. Danger of
electrical shock!
The insulation measurement causes the ca-
pacitance UUTs to be charged by test voltage.
The UNITEST TELARIS ISO plus automatically
discharges the UUT after the completion of
measurement. When interrupting the mea-
surement or when removing the test leads prior
to the completion of measurement, a danger-
ous voltage may be present and remain at UUT.
If a dangerous voltage is detected during volt-
age measurement, the UUT must be dis-
charged manually, using a high-resistant load
(not via short-circuit!).
28
02.10.2008 15:36 Uhr
The RISO connection socket is supplied from
the instrument with a voltage of < 1kV within
the RISO 1000 V measurement range.
Set the measurement function selection dial
(19) to one of the four "RISO measurement
functions" (1000 V/ 500 V/ 250 V/ 100 V).
Connect the red test lead to the "RISO" sock-
et and the black test lead to the "COM" sock-
et.
3 different limit values (0.5/1.0/2.0 MΩ) can be
set using the "LIMIT" key (16).
Resistance values between 0.005 MΩ and
1.999 GΩ can be measured within all four in-
sulation measurement ranges.
Seite 28