Siemens SIREMOBIL Iso-C SP Handleiding voor installatie- en instellingsinstructies - Pagina 7
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Area dose product measurement device
Protective conductor resistance test information
Observe the instructions in the safety rules for installation and repair
(ARTD-002.731.17 ...).
The protective conductor resistance must be measured after every intervention in the
system.
However, documentation of the measured values is required only during periodical
safety checks.
If parts / components that can decisively influence the protective conductor resistance are
replaced (e.g. replacement of the mains cable, replacement of the ON/OFF assembly,
replacement of multi-core connection cables, which also create the protective conductor
connection between parts of the system (e.g. monitor cable or C-arm cable)), or if protec-
tive conductor connections have been repaired, then the protective conductor resistance
must be measured. The values must be documented and assessed in the protective con-
ductor resistance report.
NOTE
The measurement must be made according to DIN VDE 0751, Part 1 (see ARTD Part 2).
In this case the protective conductor resistance in the normal operating condition to all
conductive touchable parts of the system must be measured.
Make sure that control cables or data cables between the components of the system do
not imitate any protective conductor connection.
During the measurement the power cable and additional connection cables which also
create the protective conductor connection between parts of the system (e.g. monitor
cable between basic unit and monitor trolley) must be moved section by section to detect
broken conductors.
The protective conductor resistance may not exceed 0.2 Ohms.
Siemens AG
Medical Engineering
Evaluate the results by comparing the first measured value to the
corresponding values documented during preceding mainte-
nance procedures or safety checks.
A sudden or unexpected increase of the measured values, even if
the limit value of 0.2 ohms is not exceeded, indicates errors in the
protective conductor connections. (Protective conductor or con-
tacts).
SPR2-230.033.04
Rev. 03
Page 7 of 16
06.05
CS PS 24
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SIREMOBIL Iso-C