Notes On Device Leakage Current Measurement - Siemens SIREMOBIL Iso-C Troubleshooting Manual

16
NOTE

Notes on device leakage current measurement

Follow the instructions in the safety rules for installation and repair (ARTD-002.731.17...).
WARNING
First measured value
In most cases, the first measured value has already been determined and documented in
the device leakage current record.
The measurement was performed with the recorded line voltage and line frequency, and
with the measuring equipment recorded.
If the local line voltage or line frequency deviates from the line voltage or line frequency
documented in the record (e.g. change of location with different local line voltage / line fre-
quency), or if no documented measured values are available, then perform the device leak-
age current measurement. Mark the old values as invalid. Cross out the values, enter the
comment "invalid values" and confirm with name, date, and signature.
Adjust or program the system to the local line voltage or line frequency before the measure-
ment.
Measurement
Perform the measurement according to DIN VDE 0751, Part 1 (see ARTD-002.731.17....),
and record the value determined as the first measured value.
Measurement of the device leakage current according to the residual current procedure
(measuring arrangement according to
danger for the person performing the measurement or any other persons arises during the
measurement.
However, please note the minimum resolution of the leakage current measuring instrument
and any additional manufacturer's data restricting the use of the measuring instrument.
SIREMOBIL Iso-C
For evaluation purposes, the first measured value and the
values documented during previous maintenance or safety
checks must be compared to the measured values.
A sudden or unexpected increase of the measured values
may indicate a safety-relevant defect - even if the limit value
of 0.2 ohms is not exceeded (protective ground wire or con-
tacts).
Electric voltage!
Noncompliance can lead to severe injuries and even death.
The device leakage current measurements may be per-
formed on systems of protection class I only after the
protective conductor test has been passed.
(Fig. 3 / p.
SPR2-230.840.01.01.02
08.08
17)) must be given preference, since no
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