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Gossen Metrawatt SECULIFE ST HV Manual

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42 GMC-I Messtechnik GmbH
15.5 Testing Devices in Accordance with DIN VDE 0701, part 240
You can either change over to testing in accordance with the new
VDE 0701-0702 standard or perform the following measurements in ac-
cordance with the above-mentioned standard:
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 R
PE
(permanent connection or with plug)
Test current: DC ±200 mA
• Contact current I
• According to DIN VDE 0701, part 240, the device protective conduc-
tor must be tested after maintenance, repair or modification 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 accessi-
ble to the user, and which are not connected to the protective conductor
• Safety class II devices (totally insulated devices) for all exposed,
conductive parts which are accessible to the user
with the mains plug poled in both directions.
Setting Up the Test Sequence
See chapter 15.4 regarding the test sequence.
Special Parameters
Combined Testing
Safety class I and II devices can be tested individually or in
combination. All protective conductor connections are tested
first for interconnected safety class I devices, and then – as is
also the case for interconnected safety class II devices – all
exposed, conductive parts.
Connecting the Device Under Test
õ Connect the test instrument and the DUT as described below:
– Connect both devices to separate mains outlets.
The outlets to which the test instrument and the safety class I DUT
are connected must share a common protective conductor!
– Or connect the test instrument to the mains and the DUT to the test
socket at the test instrument.
Data Processing / Office Machines
Permanently connected or with plug
To test socket at the instrument
The requirement for testing with the mains
plug poled in both directions can be fulfilled
by connecting the DUT to the test
socket at the instrument, and by activat-
ing mains polarity reversal in the setup
menu under “Sequence”. Each time the
key (14) is activated, phase conductor L
and neutral conductor N are reversed at
the test socket.
Attention!
!
Testing with mains polarity reversal or with the mains plug poled
in both directions results in interruption of supply power to the
affected data processing equipment or office machine. This test
may thus only be conducted with the consent of the operator of
the data processing equipment or office machine.
If the DUT is defective, the electrical system’s RCCB may be
tripped during testing which would also result in interruption of
supply power to the affected equipment or office machine.
The manufacturer of the test instrument assumes no liability for
the loss of data or other damage which result from use of the
test instrument.
… 42 …


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