GMC-I Messtechnik GmbH
5
Observe the following safety precautions:
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Measurements within electrical systems are prohibited!
•
The test case may only be connected to 230/400 V mains system with 50 Hz and a 16 A
fuse via the 5-pole (23) or 3-pole (22) mains cable.
•
In order to avoid undesired shutdown in the event of a defective device under test, the
mains outlets should be separately fused if at all possible!
A defect in the DUT may trip the mains power RCD (residual current circuit breaker), and
thus cause a service interruption. If DUTs are being tested which cannot be
disconnected from the mains intermittently, an RCD (residual current circuit breaker) can
also trip the power supply circuit (test per section 6.4.1).
The manufacturer of the test case assumes no liability for loss of data or other damage
which results from its use.
•
Be prepared for the occurrence of unexpected voltages at devices under test. For
example, capacitors may be dangerously charged.
•
If the test case is connected via the earthing contact mains adapter, phase conductor L1
may be connected to the N safety socket if poled accordingly! If this is the case, reverse
polarity of the plug at the mains adapter (see section 4.1).
•
Before connecting the device under test to the test case, subject it to a thorough visual
inspection first. Devices under test with visibly damaged insulation must be repaired
before metrological testing is performed.
•
If the test case and/or its connector cables demonstrate visible damage, no longer
function, have been stored for a lengthy period of time under unfavorable conditions or
have been subjected to excessive stress during transport, it must be assumed that
hazard-free operation is no longer possible. If this is the case, remove the test case from
service and secure it against inadvertent use, for example by locking it up.
Attention
!
!
The NETZ-VDE switch (2) may only be set to the “NETZ” (mains) position after devices
under test with a protective conductor have passed the protective conductor test.
For reasons of safety, the device under test must be turned off before switching to “Netz”
(mains), so that dangerous devices under test (e.g. a circular saw) can only be switched on
intentionally.
•
Due to the fact that the test case is laid out in accordance with DIN VDE 0404, the “PE”
safety socket and the “PE” contacts in the outlet may only be connected to the mains
protective conductor after the NETZ-VDE switch has been set to the “Netz” (mains)
position.
•
In order to assure compliance with technical safety requirements, the test case may only
be repaired by a qualified electrician, who is preferably employed by the manufacturer.
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Before opening the test case in order to carry out repairs, it must be disconnected from
the mains by pulling the plug from the electrical outlet.
•
Disconnect the test case from the mains whenever work is interrupted and secure it
against unauthorized use, for example by locking the cover.
•
Use recommended accessories only!