Operation Manual

MI 3310 / MI 3310A SigmaGT Measurements
59
Notes:
 During the test, a mains voltage is connected to the DUT. If DUT contains moving
parts, make sure that it is safely mounted or protected to prevent possible danger to
the operator or damage to the DUT or surrounding environment!
 Consider any displayed warning before starting measurement!
 The instrument automatically changes L and N polarity of connected DUT during the
test.
5.2.8 Polarity test
In this test the polarity of supply cords/ leads is checked.
In the Normal mode the test is performed with internal low voltage sources.
The Active mode is intended to test cords/ leads with integrated RCD protection. Mains
voltage is applied to the tested cord in order to operate the RCD during the test.
Shorted, crossed and open wires are detected in this test.
Polarity test menu
Test parameters for polarity test
TEST Type of polarity test [normal, active]
Test circuits for polarity test
Polarity test – normal for IEC cord Polarity test – active for RCD protected
cord