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Elma DT5500A Manual

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Elma DT5500A
side 25
Display Indicators
The Primary Display：Indicate the current function testing values
The Secondary Display： It shows the output DCV while you test the insulation
resistance, and the battery voltage while the ACV
The Analog Bar：indicate the current function testing value in synchronous with the
primary display.
:While testing the insulation resistance, the symbol “ “ flashes frequently if the voltage is
over 30V.
•))) : While testing the insulation resistance, the symbol” “ flashes frequently and the
buzzer warns continually if the outside voltage is over 30V.
The symbol “ •))) “ is indicated while LOΩ≤35Ω and the BZ warns continuously.
LOCK：Push down the “LOCK” button while you test the insulation resistance and the
symbol “ ” is indicated.
LOBAT：The display shows “LOBAT” when the voltage drops below 7.5V
MAX/MIN:Stand for the maximum or the minimum.
ZERO : Digital zero adjusting。
HOLD :The digital holding function for the primary display.
AC，DC，:The indicator for the voltage property.
V，MΩ，Ω: The measured dimension units。
Insulation resistance measurements
a)Turn the function switch from the “OFF” position to the left（4000 MΩ/1000V---4000/
MΩ500V---4000 MΩ/250V---1000 MΩ/125V）,and chose one of the voltage-block( there
are 4 ranges namely, 4 MΩ40 MΩ400 MΩ4000 MΩ, can be switched automatically for
every voltage-block.)
b) Connect two testing lines to the tested；
c)Push down and hold the “TEST” button /or press the “ LOCK” keystoke first and then the
“TEST” button, if the tested is electriferous and its voltage ( AC/DC) is over 30V, it will
refuse work and no high-voltage testing occurs, simultaneity, it shows “>30V” on the LCD,
the symbol “ ” flashes, and the buzzer warns frequently. if the tested is diselectriferous
or its voltage is lower than 30V, it will enter into the formal testing process and brings the
high-voltage. on the primary display, the insulation resistance in MΩ is indicated in-phase
with analog bar; on the secondary display, the tested insulation voltage in V (DC) is
indicated, the symbol “ ” flashes and the buzzer warns frequently
… 25 …


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