AT3-II S
CEE Adapter 16 (20) A
for Testing Protective Conductor Current in Operating Condition
3-349-337-03
5/7.14
Operating Instructions
1
Application
With the AT3-II S CEE adapter, devices which are equipped with
a 16A/6h or 32A/6h 5-pin CEE plug can be quickly and efficiently
connected to test instruments designed for testing portable
devices in accordance with DIN VDE 0701-0702, or for testing in
accordance with IEC 62353 (VDE 0751), and which are furnished
with only an earthing contact outlet.
The following tests can be performed on devices with CEE plugs
with the help of the AT3-II S adapter:
•
Testing of protective conductor continuity
•
Insulation resistance measurement
•
Measurement of Protective Conductor Current in measuring mode
– direct (direct method via test socket)
– differential (differential current measuring method)
– alternative (equivalent leakage current measurement method)
Attention
!
!
Application Restrictions
The AT3-II S CEE adapter may only be used for test
purposes in combination with a test instrument. Other use
of the adapter, in particular for continuous connection of
3-phase current devices to 3-phase electrical systems, is
not permissible under any circumstances!
In any case, maximum permissible conventional thermal
current is 16 A AC per phase.
2
Safety Features and Precautions
The AT3-II S CEE-Adapter is manufactured and tested in
accordance with safety regulations IEC 61010-1 / EN 61010-1 /
VDE 0411-1. If used for its intended purpose, the safety of the
user and of the device is assured.
Carefully read the operating instructions before use, in particular
the operating instructions included with the test instrument with
which you intend to use the adapter. Follow all instructions
contained therein.
The adapter may only be used for testing devices with 5-pin CEE
plugs and current consumption of no greater than 3 x 20 A (AC-1).
The AT3-II S CEE adapter may not be used:
•
With open housing
•
If it demonstrates visible damage
•
If the CEE outlet or the connector cable is damaged
•
After excessive stress, i.e. if the load capacities specified in
the technical data have been exceeded
•
After long periods of storage under unfavorable conditions
(e.g. humidity, dust or extreme temperature)
Meanings of Symbols on the Instrument
Warning concerning a point of danger
(attention: observe documentation!)
CAT II
Measuring category II device
Indicates EC conformity
Harmlessness with regard to interference emission and
interference immunity in accordance with
EN 61326:2000 / EN 61000-2 / EN 61000-4
The device may not be disposed of with the trash.
Further information regarding the WEEE mark can be
accessed on the Internet at www.gossenmetrawatt.com
by entering the search term WEEE.
3
Connecting the AT3-II S
Before testing can be started, the AT3-II S must be connected to
the test instrument and to mains power. Proceed as follows:
Ð
Connect the mains cable from the test instrument to the
earthing contact outlet labelled “Appliance tester” on the
AT3-II S.
Ð
Connect the earthing contact cable from the AT3-II S to the
test/mains outlet at the test instrument. The connection at the
AT3-II S is labelled “to appliance tester”.
Note!
Prerequisite for differential current measurement
For the measurement of protective conductor current
with differential current method you require a test instru-
ment which is equipped with voltage inputs.
Ð
Insert the 4 mm plugs on the cable from the AT3-II S, which is
labelled “tester Bu. 2 & 3”, into sockets N (2) and L (3) at the
test instrument.
Ð
Plug the CEE connector cable from the AT3-II S into a suitable
16A/6h CEE outlet within your electrical installation. The
connection at the AT3-II S is labelled “Mains, 3~ 400 V, 16 A
50...60 Hz”. As of this point in time, the AT3-II S and the test
instrument are supplied with electrical power.
Ð
Finally, connect the device under test to the CEE outlet at the
AT3-II S. The outlet or coupling is labelled “Test-socket
appliance”.
Testing can now be started (see section 4).
4
Testing with the AT3-II S
You can now execute all tests on devices with CEE plugs which
are otherwise possible with the test instrument, and which are
supported by the AT3-II S adapter, just as you would for devices
with earthing contact plugs. Proceed as described in the operat-
ing instructions for the test instrument to this end.
The following characteristics of the AT3-II S adapter must be
taken into consideration when performing tests with the test
instrument:
Testing Protective Conductor Resistance
When testing protective conductor resistance, measured
protective conductor resistance is increased by the amount
caused by the protective conductor system of the AT3-II S CEE
adapter itself. In case of doubt, i.e. if measurement results are
close to the permissible limit value, measure the adapter’s
protective conductor resistance at the PE terminal of its CEE
outlet, and subtract the results from the measured value obtained
for the DUT-adapter system.
Insulation Test
During insulation testing, the three phase terminals (L1, L2 and
L3) and the neutral terminal (N) at the DUT are short-circuited, and
testing is then executed.
!
