Testing and measuring
33
5.1.2
Tests
The test system must not be used for testing electrical installations. It is exclusive-
ly intended for testing devices and systems listed under "System description" on
page 9.
During insulation measurements, a direct current of 500 V is applied. Touching
faulty DUTs when the test probe is in direct contact may expose personnel to the
danger of electric shock. The touch current is limited to 2.5 mA. .
During alternative measurements of the leakage current, an alternating current
of 250 V is applied. Touching faulty DUTs when the test probe is in direct contact
may expose personnel to the danger of electric shock. The test current is limited
to 3.5 mA.
The current flowing on faulty DUTs during a test may cause unwanted tripping
of a residual current protective device (RCD).
For testing equipment leakage currents with equipment in operational condi-
tion, the device under test must be installed in an insulated state to prevent leak-
age currents from flowing via accidental earth connections.
Exposed conductive parts and the measuring leads of the device under test may
be live and therefore must not be touched.
Caution
Caution
Caution
Caution
Caution
Содержание UNIMET 300ST
Страница 50: ...Testing and measuring 50 TGH1365en 10 2012...
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