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15.3 Inspection (visual inspection)
Particular attention should be paid to the following:
–
that the externally accessible fuse links correspond to the
manufacturer's specified values (design value of current, fusing
characteristic),
–
the safety-relevant markings, labels and inscriptions on the device/
system are legible and complete,
–
mechanical parts are undamaged,
–
that there is no apparent damage or soiling that could reduce safety,
–
that accessories and/or single-use articles used with the device/
system are also assessed (e.g. mains connecting cable, patient
connections, tubes),
–
the necessary documents are available and reflect the current version
of the ME device.
(From DIN VDE 0751-1:2008-08, Section 5.2)
15.4 Protective conductor resistance
The limit value is:
–
0.5 Ω Ω Ω Ω Ω for ME systems with multi-outlet power strips,
between the protective conductor of the mains plug of the
multi-outlet power strip and all touchable conductive parts of
the ME system mains cable, menu "with power strip"
–
0.3 Ω Ω Ω Ω Ω for devices with a fixed mains cable (or for devices with
removable mains cable on devices with a fixed mains cable), menu
„With connection cable"
–
0.2 Ω Ω Ω Ω Ω for devices with a removable mains cable (between
the protective contact of the device plug and the touchable
conductive parts), menu „W/o connection cable"
–
0.1 Ω Ω Ω Ω Ω for the removable mains cable alone, submenu "test
cables"
Operating manual for the TG uni 1, TG euro 1 and TG euro 1 med appliance tester
Conducting tests in accordance with VDE 0751-1/EN 62353 – Definition of standards
Measuring principle circuit
Protective conductor resistance PC I, Diagram C1
Test socket
Measuring principle circuit
Protective conductor resistance PC I, Diagram C2
Adjacent socket
47
Test object
Test line
Tester
´Probe´
socket
Test object
Test line
Tester
´PE´
Measuring circuit for measuring the
protective conductor resistance of
socket
test objects which for operational
Test line
reasons cannot be disconnected
from the mains, or for test objects
with a fixed connection to the mains
power supply.
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