MI 3321 MultiservicerXA
Single tests in PAT testing mode
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Displayed results:
Main result ............. substitute leakage current
Notes:
Consider any displayed warning before starting measurement!
When S/C1 probe is connected during the test then the current through it is also
considered.
Substitute leakage current may differ substantially from that of conventional
leakage current test because of the way the test is performed. For example, the
difference in both leakage measurements will be affected by the presence of
neutral to earth noise suppression capacitors.
6.2.5
Substitute leakage - S
Leakage currents between live conductors and isolated accessible metal parts (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 V AC and the
result is scaled to the value of a nominal mains supply voltage of 230 V AC.
The instrument measures the insulation resistance between:
- Main test socket (L+N) and S/C1 test terminals, and
- LN and S/C1 test sockets.
This function is primarily intended for testing Class II DUTs and Class II parts of Class I
DUTs.
Sub leakage S menu
Test parameters for substitute leakage S 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,
2.00 mA, 2.50 mA, 3.00 mA, 3.50 mA, none]
TIME
Measuring time
[5 s, 10 s, 30 s, 60 s, 120 s, none]
Test circuits for substitute leakage S measurement
