Patient Leakage - Applied Part To Earth
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Patient Leakage - Applied Part To Earth
Switch Position
------------
PATIENT
Test Icon Displayed ---
Warning
Mains voltage applied to appliance. This test involves applying a current limited mains potential (110%
of mains input voltage) to the SIP/SOP socket. Due to the requirements for EN60601 testing this test
current can be in excess of 5mA under short circuit conditions and as such is hazardous to the user.
Caution should be taken when conducting this test. Current limiting is via a limiting resistor in series
with the SIP/SOP socket.
NOTE: The Earth bond probe should not be used as part of these tests as this may affect the current
being measured. Ensure the earth bond probe is disconnected from the EUT prior to running these
tests.
All Appliances
Plug EUT into Analyser outlet socket, use Applied Parts lead from the Applied Part socket and attach the
applied parts from the EUT to the Analyser (Use Applied Parts adaptors, where necessary).
The Patient Leakage Test displays the current that would flow if an Applied Part was attached on a person. The
Analyser detects any current flowing in the Applied Parts Lead. The Analyser displays the result in milliamps
(mA).
To change the test duration, press the SELECT key and then UP or DOWN keys. The user can also select the
type (B, BF, CF) by pressing SELECT again and then pressing the UP, DOWN keys.
The user must select the applicable Patient Connection or Applied Part prior to commencing the test. When the
test duration is set to UL (unlimited), the user can toggle between different Patient Connections as required to
take the individual measurements.
The selection of normal or reverse operation and single fault conditions (neutral or earth open circuit) is done
automatically during the test. The current test sequence step is shown on the lower display. Should a test fail,
the Analyser will stop the automatic test sequence. For Class II equipment, the Single Fault Earth Open tests
are skipped. The Analyser will first perform the automatic test sequence for AC-only measurement as required
by IEC-601, then if enabled repeat the test sequence for the DC-only measurement. The test sequence is
shown below:
Test Sequence
Mains
Single Fault
Class I
Class II
Condition
1. nor
1. nor
Normal
None
2. nE
*
Normal
Earth Open
EUT Power Break
3. nP
2. nP
Normal
Neutral Open
EUT Power Break
4. rP
3. rP
Reversed
Neutral Open
