Idiomas disponibles
Idiomas disponibles
Diagram of three-phase power system testing (Fig.4)
9. RCD testing
In the process of voltage testing, the purpose of reducing
interference voltage can be achieved by connecting a circuit
with a lower impedance than the tester in normal test mode
between the two probes, which is the RCD circuit system.
When conducting RCD trip test, in the normal voltage test
mode, the two probes are connected to the L and PE
terminals of the 230V AC system. At the same time, press the
RCD key "
AC current greater than 30mA at this time, the RCD system
will trip.
It should be noted that RCD cannot be tested for a long time.
At 230V, the testing time should be less than 10s and
continuous test is not allowed. After one test is completed,
wait for 60s before proceeding to the next one.
Warning
Pressing two RCD buttons during a non-RCD test is strictly
prohibited. Otherwise, it may cause the danger of burning the
instrument and even causing physical injury to the operator.
" on both probes. If the circuit generates an
35
