5322A
Operators Manual
82
Flash LC (Leakage Current) Function
The Product verifies the Flash test leakage current readout of PAT testers. PAT
tester DUTs use the same leakage current detection and measurement circuits
for the Class I and Class II Flash tests. Therefore, PAT testers are generally
calibrated for Flash leakage current using only their Class I Flash test function.
The Meter high voltage input terminal, labelled HV, the Meter COM terminal, and
the METER A terminal are used for this calibration.
To measure Class I leakage current, use a resistance load. It is connected
between HV and A terminal input terminals. The Product shows leakage current
as either the current flowing through the Meter HV terminal input, or just the
current flowing through the A input terminal. To set what is shown, go to
Setup>METER and choose the HIPOT & Flash LC correction parameter. The
appropriate indication is shown on the main Flash Leakage Current display. See
Figure 27.
In the Flash LC Mode, the Product also displays the voltage between the COM
and HV terminals, corresponding to the DUT Flash test output voltage under
loaded conditions. PAT tester Flash Class I and Class II test voltage outputs
have current limiting, typically using resistors in series with the connection to the
shorted L and N terminals and the connection to the Flash Probe terminal.
Therefore when loaded, the measured output voltage may be significantly lower
than the nominal 1500V for Class I or 3000V for Class II. To make DUT Flash
leakage current measurements:
1. Push .
2. Use the Mode softkey to select the Flash LC function.
Note
Leakage measurements for the DUT Flash Class II function is
usually not performed, as the DUT Class I and Class II tests use the
same leakage current detection circuits.
To Next Page
Loading...
