Brontekst bekijken van Megger / Insulation Meter

[[Category:Tools]][[Category:Electronics tools]][[Category:Measuring tools]]

"Megger" or Insulation meter - can be used to measure the isolation; for example of our 3 phase motors in the [[Metal Mitresaw / Afkortzaag Metaal|Metal Mitresaw]], the [[Circular Table Saw / Tafelcirkelzaag|Circular Table Saw]] or any of our normal 2 phase electric machines.

It works by putting 500V or a 1000V across the measuring probes and then checking, measuring, if the resistance is well in the mega ohms.

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This means that, during measurement, there is a lethal, 1000V, across the probes !
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So you must use well isolated test probes - and not hold these in your hand.


= Measuring Isolation/Leakage =

# Set the meter to 500V or 1000V.
# Press the orange button while nothing is connected. 
# Check that the dial `just' moves. If not - use the back zero adjust.
# Release the orange button. 
# Check that the red 'ON' LED is off.
# Connect the probes to the device
# On the machine you want to test - make sure it is as switch 'on' as is feasible (as otherwise we just test the isolation of the power cable)
# Connect one probe to earth and the other to one of the pins of the plug.
# Make sure your hands are no-where near the probes
# Press the orange button. Be careful, <font color=red><b>There is now a 1000V</b></font> across the probes
# Check the resistance; it should be in the high mega ohms (note the red scale multiplier. So if you have it set to 100V; and it reads '5' you have to multiply the value by 2.
# Let go of the orange button
# Now test Earth versus the other pin.
# Where relevant; e.g. when the metal housing is not grounded; also measure between the housing an the pins

= Typical use =

It is common in workshops to test all electrical equipment once a year.

= Documentation =

Full manual [[robin-3131-manual.pdf]]

Service and Calibration manual [[robin-3131-service.pdf]]

= History =

Bought by the space early 2024

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