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Gossen Metrawatt SECUSTAR FM Manual

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134 GMC-I Messtechnik GmbH
Appendix
The following measurements can be performed in accordance
with the above mentioned standard:
• Protective conductor measurement R PE
(
permanent connection or
with plug
)
Part 1: test current: 200 mA DC
• Insulation measurement R ISO
(not required if there is any danger of damaging voltage-sensitive
components in data processing equipment)
• Protective conductor current measurement
with the following measuring methods:
– Direct measurement
– Alternative measurement (Equivalent leakage current)
– Differential current measuring method current
The test is required for all safety class I devices under test:
–
For which insulation resistance cannot be measured and
– At which all exposed conductive parts are connected to the
protective conductor
– If mains plugs without fixed polarity are used, they must be
tested in both positions.
• Touch current measurement
with the following measuring methods:
– Direct measurement
– Alternative measurement (Equivalent leakage current)
– Differential current measuring method current
Testing is required for all devices under test:
–
For which insulation resistance cannot be measured and
– Which include exposed conductive parts which are
not
connected to the protective conductor.
– If mains plugs without fixed polarity are used, they must be
tested in both positions.
Testing safety class I and II data processing equipment and office
machines as individual devices and in combination with one
another.
The following measurements can be performed in accordance
with the above mentioned standard:
• Protective conductor measurement R PE
(
permanent connection
or with plug
)
Test current: DC ±200 mA
• Housing leakage current I T
• According to DIN VDE 0701-0702, the device protective con-
ductor must be tested after maintenance, repair or modifica-
tion of data processing equipment and office machines, and
exposed, conductive parts must be tested for the absence of
voltage. This applies to:
• Safety class I devices for all exposed, conductive parts which
are accessible to the user, and which are not connected to the
protective conductor
• Safety class II devices (totally insulated devices) for all ex-
posed, conductive parts which are accessible to the user, with
the mains plug poled in both directions.
… 134 …


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