MI 3321 MultiservicerXA
Single tests in PAT testing mode
61
Polarity - Active test procedure
Select the
Polarity test
function.
Select the
active test
sub-function.
Connect
tested IEC cord with RCD protection to the 3 Phase adapter A1322 /
A1422 (see A 1322 / A 1422 Instruction manual).
Press the
START
key for measurement.
Switch ON
the appliance (RCD) within 5 seconds and follow the instructions on the
display.
Switch ON
the RCD again if necessary.
Examples of polarity test result
Displayed results:
Main result ............. PASS/ FAIL, description of fault
Notes:
Consider any displayed warning before starting test!
Active polarity test can only be performed with 3 Phase adapter (A1322 / A1422).
Active polarity test is intended for testing RCD equipped cords where RCD must be
supplied for proper operation.
In the active polarity test a switchover between phase and neutral at the mains test
socket is performed during the test. Although the switchover time is short it could
happen that the RCD switches off during the switchover. In this case the warning
‘SWITCH ON THE APPLIANCE’ is displayed again and the RCD must be re-
switched ON.
6.2.9
Clamp current test
This function enables the measurement of AC currents in a wide range from 1 mA up to
25 A with current clamps. Typical applications are:
- measuring PE leakage currents through PE conductor in permanently installed
DUTs,
- measuring load currents in permanently installed DUTs,
- measuring differential leakage currents in permanently installed DUTs.
