OPERATION
UL544NP, UL484, UL923, UL471,
UL867, UL697
Non-Patient Medical Equipment
IEC60990 Fig4 U2, IEC 60950-1,
IEC60335-1, IEC60598-1,
IEC60065, IEC61010
IT Equipment, Household
Appliances, Luminaries,
Laboratory Equipment
The Line Leakage test can be
configured to verify the bandwidth of
the leakage current “voltmeter.”
The selection is intended to be
used for meter verification only
and has no application for normal
testing.
Press the SET key to advance to the next parameter or press the EXIT key to store the
setting and return to the test mode.
Circuit Diagrams
The following diagrams show the equivalent circuit of the measuring devices. Leakage
current readings are generated by measuring the voltage drop across these networks and
dividing by the equivalent DC resistance. The voltmeter is placed across the entire
network of the measuring device A. The voltmeter is placed across the points indicated
by the solid black dots on measuring devices B and C. The points are specified by the
agencies that require a particular measuring device to meet their specification.