Carrying Out Measurements; Preparation And Safety Measurements; Voltage Test - Unitest 2000 alpha Bedienungsanleitung

Carrying out Measurements

4.0 Carrying out Measurements
4.1 Preparation and Safety Measures
For any test (measurement) the safety references
have to be respected as mentioned in point 2.0.
Prior to any usage, a functional test has to be car-
ried out.
Function test / Self test:
" Test the voltage tester on a known source.
" Connect test probes. An acoustic sound must be au-
dible and the LED Rx/Ω (7) must be illuminated.
The voltage display of the instruments UNITEST
2000 also functions when using discharged or no
batteries.
The voltage testers may no longer be used if one
or several functions fails or if no functional relia-
bility can be detected.
The instruments UNITEST 2000 are equipped with an
internal load enabling the tripping of an RCD protection
device of 10mA or 30mA.
For voltage tests (L towards PE) in systems with
RCD devices, the RCD may be triggered. To avoid
RCD tripping first test between L and N (approx.
5s). Immediately afterwards testing L towards PE
can be carried out without RCD tripping.

4.2 Voltage Test

Safety measures a mentioned in paragraph 2.0
have to be met
" Connect both test probes with UUT.
" From a voltage of < 12V the voltage tester switches
on automatically.
The voltage is indicated with LED (4) and at the
UNITEST 2000 beta and gamma additional with
digital LCD (9)
For AC voltages the "+" and "-" LEDs are illumi-
nated and an additional signal sound is audible.
For negative voltages the LED (7) is illuminated and
an additional sound is audible.
The instruments are equipped with an LED row
comprising: 12V, 24V, 50V, 120V, 230V, 400V,
690V.
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