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Gossen Metrawatt AT3-III E Manual

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6GMC-I Messtechnik GmbH
and safety class I devices with accessible
conductive parts which are not connected to the
protective conductor. Contact all accessible
conductive parts at the device under test with the
test probe at the end of the probe cable form the
SECUTEST.../SECULIFE ST to this end.
These measurements must be performed with the plug
in both positions for DUTs with earthing contact plugs!
Note!
This test must be performed in accordance
with the specified test sequence.
Mains power
must be indicated by signal lamps L1, L2 and L3 (9)
before switching the device under test on.
The test outlets (1 – 4) are disconnected
from the mains by the safety shutdown
function included with the AT3-III E for
devices under test with fault currents of
greater than 18 mA during measurement of
protective conductor current with residual
current. Mains power may be disconnected
if the AT3-III E is used in systems protected
with RCCBs rated less than 30 mA. Mains
signal lamps L1, L2 and L3 (9) go out. The
function LED (10) blinks.
Disconnect the AT3-III E from the mains to reset.
Reconnect the AT3-III E to the mains. The test adapter
is once again ready for use after a brief self-test.
The short-circuit test displayed at the
SECUTEST.../SECULIFE ST cannot be performed
due to safety impedances which have been
integrated into the AT3-III E for testing 3-phase
devices.
Figure 1 Connecting Single and 3-Phase Devices to the AT3-III E and the SECUTEST...
230/400 V 50 Hz
test adapter AT3-III E
L3
L2
L1
!
SECUTEST
13
230/400 V 50 Hz
test adapter AT3-III E
L3
L2
L1
!
SECUTEST
13
SECUTEST PRO
COM V 1
… 6 …


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