Measurements
Safety Measures
For any test (measurement) the safety
references must be respected. Prior to
any use, 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 audible and the LED Rx/Ω (5)
must be illuminated.
The voltage testers may no longer be
used if one or several functions fails or
if no functional reliability can be de-
tected.
The voltage display of the FLUKE T50
instruments also functions when using
discharged or no batteries.
The FLUKE T50 instrument 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 sys-
tems with RCD devices, the RCD may
be triggered. To avoid RCD tripping
first test between L and N (approx. 5s).
Immediately afterwards testing L to-
wards PE can be carried out without
RCD tripping.
Fluke T50
Users Manual
8
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