UEi DMEG3/IRT3, Инструкция по эксплуатации

Страница: 22 / 34

60-Second (spot reading) Method
Spot readings are often used as predictive/preventive
maintenance tools. Readings are generally taken at regular
intervals (quarterly, semi-annually, etc.) and recorded on a
chart that stays with the equipment being tested. To make an
analysis of a motor using this method:
1. Check and record equipment temperature.
2. Check dew point temperature of the ambient
air - equipment under test must be above dew point
temperature for accurate results.
3. Ensure no power is applied to the equipment under
test and all connections are removed in order to
totally isolate the motor, cables or equipment from
other circuits.
Use the connection tables to determine where
to make connections.
• If you are testing a motor, the brushes must be
removed prior to testing
• Connect all components that are
NOT
being tested, including motor housing, to
ground (EARTH)
• Test Field and Stator windings independently
4. Turn your instrument power on (DMEG3).
5. Place rotary function select switch to the
INSULATION
position, with the correct voltage selected - Use the same
voltage every time.
6. Make connections according to the sequence tables
provided or as your circumstances require.
7. Using a stopwatch or watch with a second hand, begin a
60-second test at the same time you press and hold (or
lock) the “Press to Test” button.
20