OmegaPATPlus / BetaPATPlus Measurements
40
Test current size (multiplier)
The RCD functional standards define maximal allowed trip out times (see
chapter 3.8
Technical specifications
) at current values I
Δ
N
and 5
×
I
Δ
N
. At ½
×
I
Δ
N
the RCD must not
trip out.
Starting polarity
The RCD test must be performed at two different residual current starting polarities (0º
and 180º). This is neccessary because the sensitivity of some RCDs depends on the
polarity of the residual current.
RCD test current starting polarities
Test mode
In the
RCD single test
mode the RCD operation is checked at the user-defined test
conditions. The purpose of this test is to performmake a fast RCD operation check.
In the
RCD autotest
the RCD operation is checked at all current multipliers. The
purpose of this test is to perform a complete test of the RCD operation.
6.8.3 How to perform RCD single test
Enter
RCD single test menu
as described in chapter
6.8.2 How to perform an RCD
test
.
RCD single test menu
For the RCD test the appliance must be plugged in the instrument's main test socket
and the PRCD test probe must be connected.
Step 1
Instrument displays the message »
Press START key for new test.
«.
After setting the parameters, press the START key to apply a voltage to the main
test socket.
Step 2
The instrument displays the message »
RCD ON and press START key to
proceed
«.
Check that the RCD is switched ON (most of portable RCDs must be manually
switched on after they plugged in) and the PRCD test probe is connected
