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Information
for taking measurements with an insulation meter: When
should a measurement be taken?
A measurement should be taken when new work, renovations,
repairs, replacements or in cases of damage. Additionally,
there are in existance prescriptions for taking regular
measurements over specific periods in industial
installations. Such tests should also be made in the private
sector as insulation values deteriorate over time, due to
humidity, evironmental conditions, because of defects or for
countless other reasons. Insulation meters are used with and
electronic oscillation generator incorporated, which
increases the power of the battery across a transformer. The
readings are displayed on the insulation either by way of a
needle or digitally. In our range of insulation meters you
will find a product for any application and for any
situation.
How to measure using an insulation meter?
- disconnet power source
- connect the N and PE cables between
two points
- disconnect the fuse from the device
being measured, then connect the LS and FI cables and then reconnect the
power
- connect te measurement cables between to
phase conductor and PE and between the phase conductor and N, then
connect the insulation meter and take the measurement. It seems
sensible to us to take a measurement between the conductor phase to
easily detect damage or aging of the lines. The minimum values of
resistance of an insulation meter for measurement of voltage should
be 250V DC 0.25 MΩ,
at 500V DC 0.5 MΩ
and at 1000V DC 1 MΩ.
Please take into account that the following points for an
insulation meter:
1. Follow the instructions of use exactlyas stated.
2. Don't expose insualtion meters to extreme
temperatures
or
humidity
such as water
3. Avoid extreme moisture.
4. Don't use insualtion meters when there is gas,
inflamables, vapours or solvents present.
5. Don't use insualtion meters near strong
strong
electrical (motors, transformers, etc.)
6. Before turning on an insulation meter, ensure that
operating conditions are stable.
7. Repair and maintenance work on insulation meters, as well
as opening them, must be carried out only be specially
trained technicians of PCE Group.
8. Special care should be taken when working with
voltages
in excess of 25V (AC / DC). Contact with high voltages can
cause death.
9. Each time the range of measurement is changed, the
insulation meters contact should be removed from the object
being measured.
10. Before taking a measurement, the user should check the
test points of the insulation meter to ensure they are not
damaged or broken.
11. Don't touch the points of measurement as this will
effect the readings.
12. Voltage between the device and ground cannot go beyond CAT III 1000V.
13. Don't place insulation meters with their control panels
face down on a table or work surface, as this may damage the
device.
14. Never make changes or modifications to the insulation
meter. |