Ht-instruments М75 Uživatelský manuál stáhnout pdf (Strana 38)

M72 - M73 - M74 - M75

EN - 36

4. If during measurement an excessive

contact voltage is detected (higher than

50V) the instrument does not perform the

test and emits a prolonged sound to

signal the anomalous situation. The

screen beside is displayed for 5 seconds

after which the instrument displays the

default screen of Ra

test

The instrument dispalys the symbol

when:

 The instrument is operating in a

critical situation as for example in

presence of overvoltages

 The instrument cannot guarantee the

measuring uncertainty lower than

30% of the reading, according to

IEC/EN61557-1

6. If during measurement the green probe is

connected to the phase conductor and

the black probe is connected to the

protective conductor, the instrument does

not perform the test and emits a

prolonged sound to signal the anomalous

situation. The screen beside is displayed

for 5 seconds after which the instrument

displays the default screen of Ra

test.

This can happen even if the wrong

connection is performed on the back side

of the power socket

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Ht-instruments М75 Uživatelský manuál Strana 38