Electrical
test equipment is best to be relied on for insulation resistance
measurements as they provide fast results and are simple to use. The
expectations with such products are usually to get accurate results. When we
look out for test equipment, we prioritize those that have a very high
resistance to current flow. Many times it's seen that insulators are
affected by temperature, electrical issues, climate, and moisture issues. Their
deprivation can cause degradation of power system reliability, safety issues
and also, spontaneous blackouts.
Megger
test equipment has marked its name in the industry through its
instruments. They have a wide variety of good insulation testers, especially
the Megger's MIT series. The two most sold devices in this product line are the
Megger
mit420/2 and the Megger mit1525. These testers are ideal
for industrial and electrical testing. Their features include performing
insulation measurements on a variety of power system components like cables,
motors, and also transformers. Since both are compact (lightweight) and handy
therefore are ideal for field testing. They also have Analog and Digital
display along with double insulated case design beneficial for user protection.
Megger
mit1525 has a guard terminal that eliminates unwanted leakage
currents from measurements; resulting in an accurate measurement. Megger
mit420/2 Insulation testing has been improved with reaction controlled test
voltages to limit overvoltage to 2% instead of industry-standard, which is
10-20%.
Megger
Megohmmeter is also much in demand and is sold worldwide. It measures the
electrical resistance of insulators.
Primarily,
it applies a comparatively high voltage across insulation and draws leakage
current through the insulation, and gives the operator measurement. It
typically measures small currents and delivers the readings in
megohms. Post the readings; the user takes the final call of equipment.
It's important to note that it does not damage the insulation; therefore, this
instrument can be used repetitively for testing to get a lifecycle trend and
work on its maintenance.
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