7
OPERATING INSTRUCTIONS
The DVM-80UVM requires one 9V lithium or alkaline battery, which powers
the unit and activates the backlight. The meter will shut off automatically a
few minutes after the display reads zero, but not while voltage measurements
are being made. The DVM-80UVM includes an elbow test point reading feature,
which is displayed by a blinking decimal point ( . ) and a Peak Hold feature which
is indicated by all decimal points flashing.
To activate the Peak Hold feature, press the Peak Hold button. The display will hold
the highest reading while Peak Hold is activated. To deactivate the Peak Hold and
clear the display, press the Peak Hold button again.
NOTE: The meter will not shut off while a peak reading is displayed.
The backlight is always on when the unit is powered on. The low battery feature will
simply shut off or will not turn on the meter when the battery is low. The unit has a 0.4”
LCD display that indicates 3-1/2 digits. The DVM-80UVM measures RMS AC and DC.
To take readings above 40kV, attach one R-80 resistor stick on each meter stick,
and then multiply the reading on the display by two (for example, if the display
reads 30kV with add-on resistor sticks installed, multiply 30 times 2 = 60.0kV).
Do not exceed 80kV with the R-80 resistor sticks attached.
PRE-USE INSPECTION
WARNING:
Before using the instrument be sure to test and inspect the equipment
to ensure that it is functioning properly and is in safe, working condition. Failure to do
so may cause serious injury or death and may result in erroneous test measurements.
Before making any high voltage measurements, test and inspect the
voltmeter/phaser as follows:
1) Make certain the instrument is clean, dry and waxed to a clear shiny surface.
2) Inspect the cord for cracked insulation.
3) Be sure that you are using hot sticks of the appropriate length, and examine each
hot stick to ensure that it is clean, dry and waxed to a clear shiny surface.
4) Attach the appropriate probes for overhead or underground applications (see page 9)
and ensure that the probes are properly installed and tightened (do not overtighten).
5) Install add-on resistor sticks if necessary for the range being tested.
6) Test the voltmeter/phaser with a proof tester such as the HD Electric PT-5000B
Proof Tester Voltmeter Tester (see page 10).
Voltage and Phasing Measurements – Line-to-Line
We recommend that two person crews perform all line-to-line voltage measurements
and phasing operations. Since the operation is occurring near two energized conductors,
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