Megger / Insulation Meter: verschil tussen versies
| Regel 10: | Regel 10: | ||
So you must use well isolated test probes - and not hold these in your hand. | 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. | ||
| + | |||
| + | = Documentation = | ||
| + | |||
| + | Full manual [[robin-3131-manual.pdf]] | ||
| + | |||
| + | Service and Calibration manual [[robin-3131-service.pdf]] | ||
= History = | = History = | ||
Versie van 19 dec 2024 om 21:32
"Megger" or Insulation meter - can be used to measure the isolation; for example of our 3 phase motors in the Metal Mitresaw, the 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.
This means that, during measurement, there is a lethal, 1000V, across the probes !
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, There is now a 1000V 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.
Documentation
Full manual robin-3131-manual.pdf
Service and Calibration manual robin-3131-service.pdf
History
Bought by the space early 2024
This equipment is safety category 4:
- In-person, instructions strongly advised but not mandatory.
- Reading, and following, the instructions on the Wiki is mandatory!
This equipment is Noise Category 3: Can be used at all hours. No limits.
Handle with care.
This is a precision tool with exact dimensions and straightness.
That means: handle it gently, don't hammer on it or use it as a crowbar and so on.
(if you need a crowbar - these are wonderful for that!)
It is very important that if you accidentally drop it or think it may be out of line
- either mark the tool very clearly...
- or report this to the mailing list...
...so that your fellow makers do not ruin their work.
