Measuring earth leakage current – Fluke ESA612 User Manual
Page 40
ESA612
Users Manual
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fis117.jpg
Figure 17. Leakage Current Main Menu
Note
The display shown in Figure 17 is the main
leakage current menu when AAMI is the selected
standard.
All leakage currents, with the exception of Lead Isolation
(Mains on Applied parts), are displayed in one of three
ways: AC+DC, AC Only, or DC only. The initial result is
displayed in the appropriate parameter based on the
standard selected. To change the displayed parameter,
press G or H. The present measurement method is
displayed to the right of the current measurement while
leakage current tests are conducted.
Measuring Earth Leakage Current
Note
The Ground Wire (Earth) Leakage test is
available for AAMI, 60601, and not IEC 62353.
To measure the current flowing in the DUT’s protective
earth circuit, press the softkey labeled Ground Wire
(pending the standard) from the leakage current main
menu. Figure 18 shows the electrical connections between
the Analyzer and the DUT during a Ground Wire Leakage
Current Test.
Within the Ground Wire Leakage Current test there are a
few combination measurements that can be performed.
Pressing P switches the polarity of the mains voltage
applied to the Analyzer’s test receptacle between Normal,
Off, Reverse, and Off. Pressing N opens and closes
the neutral connection to the Analyzer’s test receptacle.
There is no need to open up the test receptacle earth
(ground), since this is done internally during the
measurement.
The following outlet conditions apply when performing this
test:
•
Normal
Polarity
•
Normal Polarity, Open Neutral
•
Reversed
Polarity
•
Reversed Polarity, Open Neutral