EM TEST (Switzerland) GmbH
CWS500 N1.3 / N1.4
User manual
V 1.01
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2.2.
Safety when testing conductive immunity as per IEC 61000-4-6
For a test setup as per IEC 61000-4-6, the following safety aspects have to consider strictly:
WARNING
For this test setup, no ground fault relays can be installing at the
working area.
Reason:
The
C
oupling
D
ecoupling
N
etworks have built in filter capacitors to PE. The ground current to PE therefore is
much higher and the fault current relays will be continuously switching off the power supply source.
The same problem is in a setup for measuring conductivity. In this case the specified LISN is causing the above
described ground fault current.
Special Information for operating the CWS 500N1.x:
1. The intake and outlet for the cooling system must not cover. Free air circulation is required for proper
function of the CWS 500N1.x. Blockage of the cooling air system may result in damage to the RF amplifier
or intermittent shut down of the equipment.
2. All panels have to install. They are important components of the cooling system. Never perform tests with a
partially or completely open generator.
3. Before a test or a calibration may performed, the generator must be operating for warm up
- CWS 500N1.3 for at least 15 minutes and
- CWS 500N1.4 for at least 30 minutes.
After this time the CWS 500N1.x output is stable
4. High voltage components are only be exposing when remove the three cover panels (unscrewed). To
service the inside the generator, the power supply must turned off and the power cord must remove before
opening the equipment.
5.
Some CDN’s are design for higher and hazardous voltages. It is necessary to remove the power cord from
the input connection of the CDN’s before opening the housing.
6. Only trained and qualified service technicians are allow to perform service and repair the instruments.
Please contact an EM TEST service center or your local sales partner for repairing or servicing the units.
