Siemens AG SPR2-310.815.01.07.02 ARCADIS Varic
12.06 CS PS SP
General information 13
Page 13 of 64
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disconnected from power, in compliance with DIN VDE 0751-1/2001-10, Fig. C2.
Pos. 1 = System
Pos. 2 = Application part type B (if available)
Pos. 3 = Measurement setup (integrated into measuring device)
Repeat measurement
In the case of maintenance or repairs, perform the protective conductor resistance mea-
surement again.
Document and evaluate the values determined in the repeat measurement.
The measurement must be performed in accordance with DIN VDE 0751, Part 1 (refer to
ARTD Part 2). The protective conductor resistance for all touchable conductive parts must
be measured during the normal operating state of the system.
Make sure that control cables or data cables between the system components are not
mistaken for protective conductor connections.
During the measurement, the power cable and additional connection cables with the inte-
grated protective conductor (e.g. monitor cable between the basic unit and monitor cart)
must be moved section by section to detect cable breaks.
The protective conductor resistance must not exceed 0.2 ohms.
The values determined in the repeat measurement, including the measuring points, must
be recorded and evaluated in the protective conductor resistance protocol.
The measuring procedure and the measuring device used (designation and serial num-
ber) must also be documented.
NOTE
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 in the measured values may indicate a defect in the pro-
tective conductor connections (protective conductor or contacts)
- even if the limit value of 0.2 ohms is not exceeded.
System leakage current measurement information 0
Observe the instructions in the "Safety Rules for Installation and Repair"
(ARTD-002.731.17 ...).
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