29
The current is measured through the Measuring Device with S1 open, S8 closed and S5 normal and then S5
reversed. The maximum allowed values are as follows:
Type B
Type BF
Type CF
Class I DC
0.05 mA
0.05 mA
0.05 mA
AC
0.5 mA
0.5 mA
0.05 mA
Class II DC
0.05 mA
0.05 mA
0.05 mA
AC
0.5 mA
0.5 mA
0.5 mA
Patient Leakage, single fault, earth open
This test measures the patient leakage current with a single fault condition (earth open). The current is
measured through the Measuring Device with S1 closed, S8 open and S5 normal and then S5 reversed. The
maximum allowed values are as follows:
Type B
Type BF
Type CF
Class I DC
0.05 mA
0.05 mA
0.05 mA
AC
0.5 mA
0.5 mA
0.05 mA
Class II
n/a
n/a
n/a
Patient Leakage – F-Type
Switch Position
------------
PATIENT F-TYPE
Test Icon Displayed ---
Warning
This test involves applying a current limited mains potential (110% of mains input voltage) to
the Applied Parts connections. Due to the requirements for EN60601 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 measurement circuit.
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, connect the Applied Parts lead from the Applied Part socket and attach
the applied parts from the EUT to the lead.
