Siemens SIREMOBIL Iso-C Service Instructions Manual page 18

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The system must be switched on during the measurement. Measuring instruments with
automated measuring sequences must therefore be set to manual measurement.
Enter the highest value as first measured value in the device leakage current record.
This value must not exceed the permissible leakage current values according to DIN VDE
0751-1:2001-10, Table F.1, line "Device leakage current for devices according to remarks
1 and 3", of 2.5 mA.
Measure and record the current line voltage. If the measured line voltage deviates from
the nominal voltage, then correct the measured value to the value corresponding to a
measurement at the nominal value of the line voltage. Document this in addition.
Document the measuring procedure (residual measurement or direct measurement) and
the measuring instrument used (designation and serial number).
File the record sheet in the system folder or logbook with the existing records.
Repeat measurement
When service or repair work is performed on the primary power supply circuit (e.g. repairs
to the power-on circuit or replacement of the line filter), the device leakage current measu-
rement must be repeated.
The same measuring conditions as in the first measurement apply.
Record and assess the highest value determined in the repeat measurement in the exi-
sting device leakage current record.
This value must not exceed the permissible leakage current values according to DIN VDE
0751-1:2001-10, Table F.1, line "Device leakage current for devices according to remarks
1 and 3", of 2.5 mA.
Measure and record the current line voltage. If the measured line voltage deviates from
the nominal voltage, then correct the measured value to the value corresponding to a
measurement at the nominal value of the line voltage. Document this in addition.
Document the measuring procedure (residual measurement or direct measurement) and
the measuring instrument used (designation and serial number).
.
NOTE
SIREMOBIL Iso-C
System Manual
Evaluate the results by comparing the first measured value with
the corresponding values of preceding maintenance procedures
or safety checks.
A sudden or unexpected increase of the measured values may
indicate that a fault has occurred in the primary circuit of the
power supply (damaged insulation, damage caused by water
ingress or humidity, defective interference suppressor, etc.) -
even if the limit value of 2.5 mA is not exceeded.
SPR2-230.061.01
Rev. 13
Page 10 of 18
12.04 CS PS 24
Prerequisites
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