Operation Manual

MI 3310 / MI 3310A SigmaGT Measurements
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 For more information refer to chapter Measurements according to IEC/ EN
60974-4, paragraph Insulation resistance (supply circuit of class II to
accessible surfaces) in 3-phase adapter user manual.
Result screens:
Examples of Insulation LN-P measurement results
Displayed results:
Main result ............. Insulation resistance LN-P
Note:
 Consider displayed warnings before starting measurement!
5.3.6 Welding circuit leakage current
The purpose of this test is to determine the sum of all leakage currents flowing from the
welding outputs W1 or W2 to earth.
Welding circuit leakage current menu
Test parameters for welding circuit current measurement
LIMIT Maximum current [3.50 mA, 5.00 mA, 10.00 mA, none]
TIME Measuring time [2 s, 3 s, 5 s, 10 s, 30 s, 60 s, 120 s, 180 s, none]
Key (F2)
CHG-OFF Change between L-N on a single phase test socket of 3-phase adapter is
disabled.
CHG-ON Change between L-N on a single phase test socket of 3-phase adapter is
enabled.
Test circuit and measurement procedure for welding circuit leakage current
measurement