MI 3321 MultiservicerXA
Single tests in PAT testing mode
53
Example of insulation S. resistance measurement results
Displayed results:
Main result ............. Insulation resistance (LN
– S)
Notes
:
If a Class I device is connected to the mains test socket the currents flowing
through the PE terminal will not be considered.
The DUT should be de-energized before the measurement!
Consider any warning on the display before starting the measurement!
Do not touch/ disconnect the DUT during the measurement or before it is fully
discharged! The message »
Discharging…
« will be displayed while the voltage on
the DUT is higher than 20 V!
6.2.4
Substitute leakage current
Leakage currents between live conductors and accessible metal parts (housing, screws,
handles etc.) are checked with this test. Capacitive leakage paths are included in the
result too. The test measures the current flowing at a test voltage of 40 VAC and the
result is scaled to the value of a nominal mains supply voltage of 230 VAC.
The instrument measures the insulation resistance between:
- Main test socket (L+N) and PE / (S/C1) test terminals, and
- LN and PE / (S/C1) test sockets.
This function is primarily intended for testing Class I DUTs.
Sub leakage menu
Test parameters for substitute leakage current measurement
OUTPUT
Test voltage [40 V]
LIMIT
Maximum current
[0.25 mA, 0.50 mA, 0.75 mA, 1.00 mA, 1.50 mA,
2.50 mA, 3.50 mA, 4.00 mA, 4.50 mA, 5.00 mA, 5.50 mA, 6.00 mA,
7.00 mA, 8.00 mA, 9.00 mA, none]
TIME
Measuring time
[5 s, 10 s, 30 s, 60 s, 120 s, none]
