Checking The Dc Voltage; Checking The Ac Voltage; Phase Test - METREL MD 1055 Serie Manual Del Usuario

Checking the DC voltage

When placing the probes on an AC voltage within the rated voltage range,
one of the lower (12V +~-) LED's and the LED arranged above it illuminate
according to the voltage applied. The lower LED's indicate the polarity at the
test probes in accordance with the identification! (+,−)
If the threshold value of 35 V is exceeded, a signal sounds and lucid vibra-
tion can be felt. This indicates a general hazardous voltage!

Checking the AC voltage

When placing the probes on an AC voltage within the rated voltage range,
both of the lower (12 V +~-) LED's and the LED's arranged above them illu-
minate according to the voltage applied. Simultaneous illumination of the
lower LED's indicates AC voltage (~).
If the threshold value of 35 V is exceeded, a signal sounds and lucid vibra-
tion can be felt. This indicates a general hazardous voltage!

Phase test

Contact a conductor with the test probe "L2". If a phase is applied, min.
100 V~, the "<L"-LED illuminates!
For determining the phase conductor, the perceptibility of the indication can
be impaired, e.g. by insulating fixtures to protect against direct contact, in
adverse positions, for example on wooden ladders or insulating floor cover-
ings, of a voltage not earthed or also in adverse lighting conditions.
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Metrel MD 1055* - LED
Operation
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